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-rw-r--r--cpu/leon3/Makefile54
-rw-r--r--cpu/leon3/ambapp.c339
-rw-r--r--cpu/leon3/config.mk26
-rw-r--r--cpu/leon3/cpu.c67
-rw-r--r--cpu/leon3/cpu_init.c254
-rw-r--r--cpu/leon3/interrupts.c219
-rw-r--r--cpu/leon3/prom.c1078
-rw-r--r--cpu/leon3/serial.c139
-rw-r--r--cpu/leon3/start.S616
-rw-r--r--cpu/leon3/usb_uhci.c1313
-rw-r--r--cpu/leon3/usb_uhci.h184
11 files changed, 4289 insertions, 0 deletions
diff --git a/cpu/leon3/Makefile b/cpu/leon3/Makefile
new file mode 100644
index 0000000..182543d
--- /dev/null
+++ b/cpu/leon3/Makefile
@@ -0,0 +1,54 @@
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib$(CPU).a
+
+START = start.o
+SOBJS =
+COBJS = cpu_init.o serial.o cpu.o ambapp.o interrupts.o prom.o usb_uhci.o
+
+SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
+START := $(addprefix $(obj),$(START))
+
+all: $(obj).depend $(START) $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+$(START): $(START:.o=.S)
+ $(CC) -D__ASSEMBLY__ $(DBGFLAGS) $(OPTFLAGS) -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE) \
+ -I$(TOPDIR)/include -fno-builtin -ffreestanding -nostdinc -isystem $(gccincdir) -pipe \
+ $(PLATFORM_CPPFLAGS) -Wall -Wstrict-prototypes \
+ -I$(TOPDIR)/board -c -o $(START) $(START:.o=.S)
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/cpu/leon3/ambapp.c b/cpu/leon3/ambapp.c
new file mode 100644
index 0000000..60ff1a2
--- /dev/null
+++ b/cpu/leon3/ambapp.c
@@ -0,0 +1,339 @@
+/* Gaisler AMBA Plug&Play bus scanning. Functions
+ * ending on _nomem is inteded to be used only during
+ * initialization, only registers are used (no ram).
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <ambapp.h>
+
+static int ambapp_apb_scan(unsigned int vendor, /* Plug&Play Vendor ID */
+ unsigned int driver, /* Plug&Play Device ID */
+ ambapp_apbdev * dev, /* Result(s) is placed here */
+ int index, /* Index of device to start copying Plug&Play
+ * info into dev
+ */
+ int max_cnt /* Maximal count that dev can hold, if dev
+ * is NULL function will stop scanning after
+ * max_cnt devices are found.
+ */
+ )
+{
+ int i, cnt = 0;
+ unsigned int apbmst_base;
+ ambapp_ahbdev apbmst;
+ apbctrl_pp_dev *apb;
+
+ if (max_cnt == 0)
+ return 0;
+
+ /* Get AMBA APB Master */
+ if (ambapp_ahbslv_first(VENDOR_GAISLER, GAISLER_APBMST, &apbmst) != 1) {
+ return 0;
+ }
+
+ /* Get APB CTRL Plug&Play info area */
+ apbmst_base = apbmst.address[0] & LEON3_IO_AREA;
+ apb = (apbctrl_pp_dev *) (apbmst_base | LEON3_CONF_AREA);
+
+ for (i = 0; i < LEON3_APB_SLAVES; i++) {
+ if ((amba_vendor(apb->conf) == vendor) &&
+ (amba_device(apb->conf) == driver) && ((index < 0)
+ || (index-- == 0))) {
+ /* Convert Plug&Play info into a more readable format */
+ cnt++;
+ if (dev) {
+ dev->irq = amba_irq(apb->conf);
+ dev->ver = amba_ver(apb->conf);
+ dev->address =
+ (apbmst_base |
+ (((apb->
+ bar & 0xfff00000) >> 12))) & (((apb->
+ bar &
+ 0x0000fff0)
+ << 4) |
+ 0xfff00000);
+ dev++;
+ }
+ /* found max devices? */
+ if (cnt >= max_cnt)
+ return cnt;
+ }
+ /* Get next Plug&Play entry */
+ apb++;
+ }
+ return cnt;
+}
+
+unsigned int ambapp_apb_next_nomem(register unsigned int vendor, /* Plug&Play Vendor ID */
+ register unsigned int driver, /* Plug&Play Device ID */
+ register int index)
+{
+ register int i;
+ register ahbctrl_pp_dev *apbmst;
+ register apbctrl_pp_dev *apb;
+ register unsigned int apbmst_base;
+
+ /* APBMST is a AHB Slave */
+ apbmst = ambapp_ahb_next_nomem(VENDOR_GAISLER, GAISLER_APBMST, 1, 0);
+ if (!apbmst)
+ return 0;
+
+ apbmst_base = amba_membar_start(apbmst->bars[0]);
+ if (amba_membar_type(apbmst->bars[0]) == AMBA_TYPE_AHBIO)
+ apbmst_base = AMBA_TYPE_AHBIO_ADDR(apbmst_base);
+ apbmst_base &= LEON3_IO_AREA;
+
+ /* Find the vendor/driver device on the first APB bus */
+ apb = (apbctrl_pp_dev *) (apbmst_base | LEON3_CONF_AREA);
+
+ for (i = 0; i < LEON3_APB_SLAVES; i++) {
+ if ((amba_vendor(apb->conf) == vendor) &&
+ (amba_device(apb->conf) == driver) && ((index < 0)
+ || (index-- == 0))) {
+ /* Convert Plug&Play info info a more readable format */
+ return (apbmst_base | (((apb->bar & 0xfff00000) >> 12)))
+ & (((apb->bar & 0x0000fff0) << 4) | 0xfff00000);
+ }
+ /* Get next Plug&Play entry */
+ apb++;
+ }
+ return 0;
+}
+
+/****************************** APB SLAVES ******************************/
+
+int ambapp_apb_count(unsigned int vendor, unsigned int driver)
+{
+ return ambapp_apb_scan(vendor, driver, NULL, 0, LEON3_APB_SLAVES);
+}
+
+int ambapp_apb_first(unsigned int vendor,
+ unsigned int driver, ambapp_apbdev * dev)
+{
+ return ambapp_apb_scan(vendor, driver, dev, 0, 1);
+}
+
+int ambapp_apb_next(unsigned int vendor,
+ unsigned int driver, ambapp_apbdev * dev, int index)
+{
+ return ambapp_apb_scan(vendor, driver, dev, index, 1);
+}
+
+int ambapp_apbs_first(unsigned int vendor,
+ unsigned int driver, ambapp_apbdev * dev, int max_cnt)
+{
+ return ambapp_apb_scan(vendor, driver, dev, 0, max_cnt);
+}
+
+enum {
+ AHB_SCAN_MASTER = 0,
+ AHB_SCAN_SLAVE = 1
+};
+
+/* Scan AMBA Plug&Play bus for AMBA AHB Masters or AHB Slaves
+ * for a certain matching Vendor and Device ID.
+ *
+ * Return number of devices found.
+ *
+ * Compact edition...
+ */
+static int ambapp_ahb_scan(unsigned int vendor, /* Plug&Play Vendor ID */
+ unsigned int driver, /* Plug&Play Device ID */
+ ambapp_ahbdev * dev, /* Result(s) is placed here */
+ int index, /* Index of device to start copying Plug&Play
+ * info into dev
+ */
+ int max_cnt, /* Maximal count that dev can hold, if dev
+ * is NULL function will stop scanning after
+ * max_cnt devices are found.
+ */
+ int type /* Selectes what type of devices to scan.
+ * 0=AHB Masters
+ * 1=AHB Slaves
+ */
+ )
+{
+ int i, j, cnt = 0, max_pp_devs;
+ unsigned int addr;
+ ahbctrl_info *info = (ahbctrl_info *) (LEON3_IO_AREA | LEON3_CONF_AREA);
+ ahbctrl_pp_dev *ahb;
+
+ if (max_cnt == 0)
+ return 0;
+
+ if (type == 0) {
+ max_pp_devs = LEON3_AHB_MASTERS;
+ ahb = info->masters;
+ } else {
+ max_pp_devs = LEON3_AHB_SLAVES;
+ ahb = info->slaves;
+ }
+
+ for (i = 0; i < max_pp_devs; i++) {
+ if ((amba_vendor(ahb->conf) == vendor) &&
+ (amba_device(ahb->conf) == driver) &&
+ ((index < 0) || (index-- == 0))) {
+ /* Convert Plug&Play info info a more readable format */
+ cnt++;
+ if (dev) {
+ dev->irq = amba_irq(ahb->conf);
+ dev->ver = amba_ver(ahb->conf);
+ dev->userdef[0] = ahb->userdef[0];
+ dev->userdef[1] = ahb->userdef[1];
+ dev->userdef[2] = ahb->userdef[2];
+ for (j = 0; j < 4; j++) {
+ addr = amba_membar_start(ahb->bars[j]);
+ if (amba_membar_type(ahb->bars[j]) ==
+ AMBA_TYPE_AHBIO)
+ addr =
+ AMBA_TYPE_AHBIO_ADDR(addr);
+ dev->address[j] = addr;
+ }
+ dev++;
+ }
+ /* found max devices? */
+ if (cnt >= max_cnt)
+ return cnt;
+ }
+ /* Get next Plug&Play entry */
+ ahb++;
+ }
+ return cnt;
+}
+
+unsigned int ambapp_ahb_get_info(ahbctrl_pp_dev * ahb, int info)
+{
+ register unsigned int ret;
+
+ if (!ahb)
+ return 0;
+
+ switch (info) {
+ default:
+ info = 0;
+ case 0:
+ case 1:
+ case 2:
+ case 3:
+ /* Get Address from PnP Info */
+ ret = amba_membar_start(ahb->bars[info]);
+ if (amba_membar_type(ahb->bars[info]) == AMBA_TYPE_AHBIO)
+ ret = AMBA_TYPE_AHBIO_ADDR(ret);
+ return ret;
+ }
+ return 0;
+
+}
+
+ahbctrl_pp_dev *ambapp_ahb_next_nomem(register unsigned int vendor, /* Plug&Play Vendor ID */
+ register unsigned int driver, /* Plug&Play Device ID */
+ register unsigned int opts, /* 1=slave, 0=master */
+ register int index)
+{
+ register ahbctrl_pp_dev *ahb;
+ register ahbctrl_info *info =
+ (ahbctrl_info *) (LEON3_IO_AREA | LEON3_CONF_AREA);
+ register int i;
+ register int max_pp_devs;
+
+ if (opts == 0) {
+ max_pp_devs = LEON3_AHB_MASTERS;
+ ahb = info->masters;
+ } else {
+ max_pp_devs = LEON3_AHB_SLAVES;
+ ahb = info->slaves;
+ }
+
+ for (i = 0; i < max_pp_devs; i++) {
+ if ((amba_vendor(ahb->conf) == vendor) &&
+ (amba_device(ahb->conf) == driver) &&
+ ((index < 0) || (index-- == 0))) {
+ /* Convert Plug&Play info info a more readable format */
+ return ahb;
+ }
+ /* Get next Plug&Play entry */
+ ahb++;
+ }
+ return 0;
+}
+
+/****************************** AHB MASTERS ******************************/
+int ambapp_ahbmst_count(unsigned int vendor, unsigned int driver)
+{
+ /* Get number of devices of this vendor&device ID */
+ return ambapp_ahb_scan(vendor, driver, NULL, 0, LEON3_AHB_MASTERS,
+ AHB_SCAN_MASTER);
+}
+
+int ambapp_ahbmst_first(unsigned int vendor, unsigned int driver,
+ ambapp_ahbdev * dev)
+{
+ /* find first device of this */
+ return ambapp_ahb_scan(vendor, driver, dev, 0, 1, AHB_SCAN_MASTER);
+}
+
+int ambapp_ahbmst_next(unsigned int vendor,
+ unsigned int driver, ambapp_ahbdev * dev, int index)
+{
+ /* find first device of this */
+ return ambapp_ahb_scan(vendor, driver, dev, index, 1, AHB_SCAN_MASTER);
+}
+
+int ambapp_ahbmsts_first(unsigned int vendor,
+ unsigned int driver, ambapp_ahbdev * dev, int max_cnt)
+{
+ /* find first device of this */
+ return ambapp_ahb_scan(vendor, driver, dev, 0, max_cnt,
+ AHB_SCAN_MASTER);
+}
+
+/****************************** AHB SLAVES ******************************/
+int ambapp_ahbslv_count(unsigned int vendor, unsigned int driver)
+{
+ /* Get number of devices of this vendor&device ID */
+ return ambapp_ahb_scan(vendor, driver, NULL, 0, LEON3_AHB_SLAVES,
+ AHB_SCAN_SLAVE);
+}
+
+int ambapp_ahbslv_first(unsigned int vendor, unsigned int driver,
+ ambapp_ahbdev * dev)
+{
+ /* find first device of this */
+ return ambapp_ahb_scan(vendor, driver, dev, 0, 1, AHB_SCAN_SLAVE);
+}
+
+int ambapp_ahbslv_next(unsigned int vendor,
+ unsigned int driver, ambapp_ahbdev * dev, int index)
+{
+ /* find first device of this */
+ return ambapp_ahb_scan(vendor, driver, dev, index, 1, AHB_SCAN_SLAVE);
+}
+
+int ambapp_ahbslvs_first(unsigned int vendor,
+ unsigned int driver, ambapp_ahbdev * dev, int max_cnt)
+{
+ /* find first device of this */
+ return ambapp_ahb_scan(vendor, driver, dev, 0, max_cnt, AHB_SCAN_SLAVE);
+}
diff --git a/cpu/leon3/config.mk b/cpu/leon3/config.mk
new file mode 100644
index 0000000..30b224a
--- /dev/null
+++ b/cpu/leon3/config.mk
@@ -0,0 +1,26 @@
+#
+# (C) Copyright 2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+PLATFORM_RELFLAGS += -fPIC
+
+PLATFORM_CPPFLAGS += -DCONFIG_LEON
diff --git a/cpu/leon3/cpu.c b/cpu/leon3/cpu.c
new file mode 100644
index 0000000..306a210
--- /dev/null
+++ b/cpu/leon3/cpu.c
@@ -0,0 +1,67 @@
+/* CPU specific code for the LEON3 CPU
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern void _reset_reloc(void);
+
+int checkcpu(void)
+{
+ /* check LEON version here */
+ printf("CPU: LEON3\n");
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+void cpu_reset(void)
+{
+ /* Interrupts off */
+ disable_interrupts();
+
+ /* jump to restart in flash */
+ _reset_reloc();
+}
+
+int do_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ cpu_reset();
+
+ return 1;
+
+}
+
+u64 flash_read64(void *addr)
+{
+ return __raw_readq(addr);
+}
+
+/* ------------------------------------------------------------------------- */
diff --git a/cpu/leon3/cpu_init.c b/cpu/leon3/cpu_init.c
new file mode 100644
index 0000000..4fe7d4b
--- /dev/null
+++ b/cpu/leon3/cpu_init.c
@@ -0,0 +1,254 @@
+/* Initializes CPU and basic hardware such as memory
+ * controllers, IRQ controller and system timer 0.
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <asm/asi.h>
+#include <asm/leon.h>
+#include <ambapp.h>
+
+#include <config.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* reset CPU (jump to 0, without reset) */
+void start(void);
+
+/* find & initialize the memory controller */
+int init_memory_ctrl(void);
+
+ambapp_dev_irqmp *irqmp = NULL;
+ambapp_dev_mctrl memctrl;
+ambapp_dev_gptimer *gptimer = NULL;
+unsigned int gptimer_irq = 0;
+int leon3_snooping_avail = 0;
+
+struct {
+ gd_t gd_area;
+ bd_t bd;
+} global_data;
+
+/*
+ * Breath some life into the CPU...
+ *
+ * Set up the memory map,
+ * initialize a bunch of registers.
+ *
+ * Run from FLASH/PROM:
+ * - until memory controller is set up, only registers avaiable
+ * - no global variables available for writing
+ * - constants avaiable
+ */
+
+void cpu_init_f(void)
+{
+ /* these varaiable must not be initialized */
+ ambapp_dev_irqmp *irqmp;
+ ambapp_apbdev apbdev;
+ register unsigned int apbmst;
+
+ /* find AMBA APB Master */
+ apbmst = (unsigned int)
+ ambapp_ahb_next_nomem(VENDOR_GAISLER, GAISLER_APBMST, 1, 0);
+ if (!apbmst) {
+ /*
+ * no AHB/APB bridge, something is wrong
+ * ==> jump to start (or hang)
+ */
+ while (1) ;
+ }
+ /* Init memory controller */
+ if (init_memory_ctrl()) {
+ while (1) ;
+ }
+
+ /****************************************************
+ * From here we can use the main memory and the stack.
+ */
+
+ /* Find AMBA APB IRQMP Controller */
+ if (ambapp_apb_first(VENDOR_GAISLER, GAISLER_IRQMP, &apbdev) != 1) {
+ /* no IRQ controller, something is wrong
+ * ==> jump to start (or hang)
+ */
+ while (1) ;
+ }
+ irqmp = (ambapp_dev_irqmp *) apbdev.address;
+
+ /* initialize the IRQMP */
+ irqmp->ilevel = 0xf; /* all IRQ off */
+ irqmp->iforce = 0;
+ irqmp->ipend = 0;
+ irqmp->iclear = 0xfffe; /* clear all old pending interrupts */
+ irqmp->cpu_mask[0] = 0; /* mask all IRQs on CPU 0 */
+ irqmp->cpu_force[0] = 0; /* no force IRQ on CPU 0 */
+
+ /* cache */
+}
+
+void cpu_init_f2(void)
+{
+
+}
+
+/*
+ * initialize higher level parts of CPU like time base and timers
+ */
+int cpu_init_r(void)
+{
+ ambapp_apbdev apbdev;
+
+ /*
+ * Find AMBA APB IRQMP Controller,
+ * When we come so far we know there is a IRQMP available
+ */
+ ambapp_apb_first(VENDOR_GAISLER, GAISLER_IRQMP, &apbdev);
+ irqmp = (ambapp_dev_irqmp *) apbdev.address;
+
+ /* timer */
+ if (ambapp_apb_first(VENDOR_GAISLER, GAISLER_GPTIMER, &apbdev) != 1) {
+ printf("cpu_init_r: gptimer not found!\n");
+ return 1;
+ }
+ gptimer = (ambapp_dev_gptimer *) apbdev.address;
+ gptimer_irq = apbdev.irq;
+
+ /* initialize prescaler common to all timers to 1MHz */
+ gptimer->scalar = gptimer->scalar_reload =
+ (((CONFIG_SYS_CLK_FREQ / 1000) + 500) / 1000) - 1;
+
+ return (0);
+}
+
+/* find & setup memory controller */
+int init_memory_ctrl()
+{
+ register ambapp_dev_mctrl *mctrl;
+ register ambapp_dev_sdctrl *sdctrl;
+ register ambapp_dev_ddrspa *ddrspa;
+ register ambapp_dev_ddr2spa *ddr2spa;
+ register ahbctrl_pp_dev *ahb;
+ register unsigned int base;
+ register int not_found_mctrl = -1;
+
+ /* find ESA Memory controller */
+ base = ambapp_apb_next_nomem(VENDOR_ESA, ESA_MCTRL, 0);
+ if (base) {
+ mctrl = (ambapp_dev_mctrl *) base;
+
+ /* config MCTRL memory controller */
+ mctrl->mcfg1 = CFG_GRLIB_MEMCFG1 | (mctrl->mcfg1 & 0x300);
+ mctrl->mcfg2 = CFG_GRLIB_MEMCFG2;
+ mctrl->mcfg3 = CFG_GRLIB_MEMCFG3;
+ not_found_mctrl = 0;
+ }
+
+ /* find Gaisler Fault Tolerant Memory controller */
+ base = ambapp_apb_next_nomem(VENDOR_GAISLER, GAISLER_FTMCTRL, 0);
+ if (base) {
+ mctrl = (ambapp_dev_mctrl *) base;
+
+ /* config MCTRL memory controller */
+ mctrl->mcfg1 = CFG_GRLIB_FT_MEMCFG1 | (mctrl->mcfg1 & 0x300);
+ mctrl->mcfg2 = CFG_GRLIB_FT_MEMCFG2;
+ mctrl->mcfg3 = CFG_GRLIB_FT_MEMCFG3;
+ not_found_mctrl = 0;
+ }
+
+ /* find SDRAM controller */
+ base = ambapp_apb_next_nomem(VENDOR_GAISLER, GAISLER_SDCTRL, 0);
+ if (base) {
+ sdctrl = (ambapp_dev_sdctrl *) base;
+
+ /* config memory controller */
+ sdctrl->sdcfg = CFG_GRLIB_SDRAM;
+ not_found_mctrl = 0;
+ }
+
+ ahb = ambapp_ahb_next_nomem(VENDOR_GAISLER, GAISLER_DDR2SPA, 1, 0);
+ if (ahb) {
+ ddr2spa = (ambapp_dev_ddr2spa *) ambapp_ahb_get_info(ahb, 1);
+
+ /* Config DDR2 memory controller */
+ ddr2spa->cfg1 = CFG_GRLIB_DDR2_CFG1;
+ ddr2spa->cfg3 = CFG_GRLIB_DDR2_CFG3;
+ not_found_mctrl = 0;
+ }
+
+ ahb = ambapp_ahb_next_nomem(VENDOR_GAISLER, GAISLER_DDRSPA, 1, 0);
+ if (ahb) {
+ ddrspa = (ambapp_dev_ddrspa *) ambapp_ahb_get_info(ahb, 1);
+
+ /* Config DDR memory controller */
+ ddrspa->ctrl = CFG_GRLIB_DDR_CFG;
+ not_found_mctrl = 0;
+ }
+
+ /* failed to find any memory controller */
+ return not_found_mctrl;
+}
+
+/* Uses Timer 0 to get accurate
+ * pauses. Max 2 raised to 32 ticks
+ *
+ */
+void cpu_wait_ticks(unsigned long ticks)
+{
+ unsigned long start = get_timer(0);
+ while (get_timer(start) < ticks) ;
+}
+
+/* initiate and setup timer0 interrupt to 1MHz
+ * Return irq number for timer int or a negative number for
+ * dealing with self
+ */
+int timer_interrupt_init_cpu(void)
+{
+ /* 1ms ticks */
+ gptimer->e[0].val = 0;
+ gptimer->e[0].rld = 999; /* (((1000000 / 100) - 1)) */
+ gptimer->e[0].ctrl =
+ (LEON3_GPTIMER_EN |
+ LEON3_GPTIMER_RL | LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN);
+
+ return gptimer_irq;
+}
+
+/*
+ * This function is intended for SHORT delays only.
+ */
+unsigned long cpu_usec2ticks(unsigned long usec)
+{
+ /* timer set to 1kHz ==> 1 clk tick = 1 msec */
+ if (usec < 1000)
+ return 1;
+ return (usec / 1000);
+}
+
+unsigned long cpu_ticks2usec(unsigned long ticks)
+{
+ /* 1tick = 1usec */
+ return ticks * 1000;
+}
diff --git a/cpu/leon3/interrupts.c b/cpu/leon3/interrupts.c
new file mode 100644
index 0000000..2692632
--- /dev/null
+++ b/cpu/leon3/interrupts.c
@@ -0,0 +1,219 @@
+/*
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com
+ *
+ * (C) Copyright 2006
+ * Detlev Zundel, DENX Software Engineering, dzu@denx.de
+ *
+ * (C) Copyright -2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2001
+ * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <asm/stack.h>
+#include <common.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <command.h>
+#include <asm/irq.h>
+
+#include <asm/leon.h>
+#include <ambapp.h>
+
+/* 15 normal irqs and a non maskable interrupt */
+#define NR_IRQS 15
+
+struct irq_action {
+ interrupt_handler_t *handler;
+ void *arg;
+ unsigned int count;
+};
+
+extern ambapp_dev_irqmp *irqmp;
+extern ambapp_dev_gptimer *gptimer;
+
+static struct irq_action irq_handlers[NR_IRQS] = { {0}, };
+static int spurious_irq_cnt = 0;
+static int spurious_irq = 0;
+
+static inline unsigned int irqmp_get_irqmask(unsigned int irq)
+{
+ if ((irq < 0) || (irq >= NR_IRQS)) {
+ return 0;
+ } else {
+ return (1 << irq);
+ }
+
+}
+
+static void leon3_ic_disable(unsigned int irq)
+{
+ unsigned int mask, pil;
+ if (!irqmp)
+ return;
+
+ pil = intLock();
+
+ /* get mask of interrupt */
+ mask = irqmp_get_irqmask(irq);
+
+ /* set int level */
+ irqmp->cpu_mask[0] = SPARC_NOCACHE_READ(&irqmp->cpu_mask[0]) & (~mask);
+
+ intUnlock(pil);
+}
+
+static void leon3_ic_enable(unsigned int irq)
+{
+ unsigned int mask, pil;
+ if (!irqmp)
+ return;
+
+ pil = intLock();
+
+ /* get mask of interrupt */
+ mask = irqmp_get_irqmask(irq);
+
+ /* set int level */
+ irqmp->cpu_mask[0] = SPARC_NOCACHE_READ(&irqmp->cpu_mask[0]) | mask;
+
+ intUnlock(pil);
+
+}
+
+void handler_irq(int irq, struct pt_regs *regs)
+{
+ if (irq_handlers[irq].handler) {
+ if (((unsigned int)irq_handlers[irq].handler > CFG_RAM_END) ||
+ ((unsigned int)irq_handlers[irq].handler < CFG_RAM_BASE)
+ ) {
+ printf("handler_irq: bad handler: %x, irq number %d\n",
+ (unsigned int)irq_handlers[irq].handler, irq);
+ return;
+ }
+ irq_handlers[irq].handler(irq_handlers[irq].arg);
+ irq_handlers[irq].count++;
+ } else {
+ spurious_irq_cnt++;
+ spurious_irq = irq;
+ }
+}
+
+void leon3_force_int(int irq)
+{
+ if (!irqmp || (irq >= NR_IRQS) || (irq < 0))
+ return;
+ printf("Forcing interrupt %d\n", irq);
+
+ irqmp->iforce = SPARC_NOCACHE_READ(&irqmp->iforce) | (1 << irq);
+}
+
+/****************************************************************************/
+
+int interrupt_init_cpu(void)
+{
+
+ return (0);
+}
+
+/****************************************************************************/
+
+/* Handle Timer 0 IRQ */
+void timer_interrupt_cpu(void *arg)
+{
+ gptimer->e[0].ctrl = (LEON3_GPTIMER_EN |
+ LEON3_GPTIMER_RL |
+ LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN);
+ /* nothing to do here */
+ return;
+}
+
+/****************************************************************************/
+
+/*
+ * Install and free a interrupt handler.
+ */
+
+void irq_install_handler(int irq, interrupt_handler_t * handler, void *arg)
+{
+ if (irq < 0 || irq >= NR_IRQS) {
+ printf("irq_install_handler: bad irq number %d\n", irq);
+ return;
+ }
+
+ if (irq_handlers[irq].handler != NULL)
+ printf("irq_install_handler: 0x%08lx replacing 0x%08lx\n",
+ (ulong) handler, (ulong) irq_handlers[irq].handler);
+
+ if (((unsigned int)handler > CFG_RAM_END) ||
+ ((unsigned int)handler < CFG_RAM_BASE)
+ ) {
+ printf("irq_install_handler: bad handler: %x, irq number %d\n",
+ (unsigned int)handler, irq);
+ return;
+ }
+ irq_handlers[irq].handler = handler;
+ irq_handlers[irq].arg = arg;
+
+ /* enable irq on IRQMP hardware */
+ leon3_ic_enable(irq);
+
+}
+
+void irq_free_handler(int irq)
+{
+ if (irq < 0 || irq >= NR_IRQS) {
+ printf("irq_free_handler: bad irq number %d\n", irq);
+ return;
+ }
+
+ /* disable irq on IRQMP hardware */
+ leon3_ic_disable(irq);
+
+ irq_handlers[irq].handler = NULL;
+ irq_handlers[irq].arg = NULL;
+}
+
+/****************************************************************************/
+
+#if defined(CONFIG_CMD_IRQ)
+void do_irqinfo(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
+{
+ int irq;
+ unsigned int pil = get_pil();
+ printf("PIL level: %u\n\r", pil);
+ printf("Spurious IRQ: %u, last unknown IRQ: %d\n",
+ spurious_irq_cnt, spurious_irq);
+
+ puts("\nInterrupt-Information:\n" "Nr Routine Arg Count\n");
+
+ for (irq = 0; irq < NR_IRQS; irq++) {
+ if (irq_handlers[irq].handler != NULL) {
+ printf("%02d %08lx %08lx %ld\n", irq,
+ (unsigned int)irq_handlers[irq].handler,
+ (unsigned int)irq_handlers[irq].arg,
+ irq_handlers[irq].count);
+ }
+ }
+}
+#endif
diff --git a/cpu/leon3/prom.c b/cpu/leon3/prom.c
new file mode 100644
index 0000000..9fa2d04
--- /dev/null
+++ b/cpu/leon3/prom.c
@@ -0,0 +1,1078 @@
+/* prom.c - emulates a sparc v0 PROM for the linux kernel.
+ *
+ * Copyright (C) 2003 Konrad Eisele <eiselekd@web.de>
+ * Copyright (C) 2004 Stefan Holst <mail@s-holst.de>
+ * Copyright (C) 2007 Daniel Hellstrom <daniel@gaisler.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <asm/prom.h>
+#include <asm/machines.h>
+#include <asm/srmmu.h>
+#include <asm/processor.h>
+#include <asm/irq.h>
+#include <asm/leon.h>
+#include <ambapp.h>
+
+#include <config.h>
+/*
+#define PRINT_ROM_VEC
+*/
+extern struct linux_romvec *kernel_arg_promvec;
+extern ambapp_dev_apbuart *leon3_apbuart;
+
+#define PROM_PGT __attribute__ ((__section__ (".prom.pgt")))
+#define PROM_TEXT __attribute__ ((__section__ (".prom.text")))
+#define PROM_DATA __attribute__ ((__section__ (".prom.data")))
+
+ambapp_dev_gptimer *gptimer;
+
+/* for __va */
+extern int __prom_start;
+#define PAGE_OFFSET 0xf0000000
+#define phys_base CFG_SDRAM_BASE
+#define PROM_OFFS 8192
+#define PROM_SIZE_MASK (PROM_OFFS-1)
+#define __va(x) ( \
+ (void *)( ((unsigned long)(x))-PROM_OFFS+ \
+ (CFG_PROM_OFFSET-phys_base)+PAGE_OFFSET-TEXT_BASE ) \
+ )
+#define __phy(x) ((void *)(((unsigned long)(x))-PROM_OFFS+CFG_PROM_OFFSET-TEXT_BASE))
+
+struct property {
+ char *name;
+ char *value;
+ int length;
+};
+
+struct node {
+ int level;
+ struct property *properties;
+};
+
+static void leon_reboot(char *bcommand);
+static void leon_halt(void);
+static int leon_nbputchar(int c);
+static int leon_nbgetchar(void);
+
+static int no_nextnode(int node);
+static int no_child(int node);
+static int no_proplen(int node, char *name);
+static int no_getprop(int node, char *name, char *value);
+static int no_setprop(int node, char *name, char *value, int len);
+static char *no_nextprop(int node, char *name);
+
+static struct property PROM_TEXT *find_property(int node, char *name);
+static int PROM_TEXT leon_strcmp(const char *s1, const char *s2);
+static void *PROM_TEXT leon_memcpy(void *dest, const void *src, size_t n);
+static void PROM_TEXT leon_reboot_physical(char *bcommand);
+
+void __inline__ leon_flush_cache_all(void)
+{
+ __asm__ __volatile__(" flush ");
+ __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t"::"i"(ASI_DFLUSH):"memory");
+}
+
+void __inline__ leon_flush_tlb_all(void)
+{
+ leon_flush_cache_all();
+ __asm__ __volatile__("sta %%g0, [%0] %1\n\t"::"r"(0x400),
+ "i"(ASI_MMUFLUSH):"memory");
+}
+
+typedef struct {
+ unsigned int ctx_table[256];
+ unsigned int pgd_table[256];
+} sparc_srmmu_setup;
+
+sparc_srmmu_setup srmmu_tables PROM_PGT = {
+ {0},
+ {0x1e,
+ 0x10001e,
+ 0x20001e,
+ 0x30001e,
+ 0x40001e,
+ 0x50001e,
+ 0x60001e,
+ 0x70001e,
+ 0x80001e,
+ 0x90001e,
+ 0xa0001e,
+ 0xb0001e,
+ 0xc0001e,
+ 0xd0001e,
+ 0xe0001e,
+ 0xf0001e,
+ 0x100001e,
+ 0x110001e,
+ 0x120001e,
+ 0x130001e,
+ 0x140001e,
+ 0x150001e,
+ 0x160001e,
+ 0x170001e,
+ 0x180001e,
+ 0x190001e,
+ 0x1a0001e,
+ 0x1b0001e,
+ 0x1c0001e,
+ 0x1d0001e,
+ 0x1e0001e,
+ 0x1f0001e,
+ 0x200001e,
+ 0x210001e,
+ 0x220001e,
+ 0x230001e,
+ 0x240001e,
+ 0x250001e,
+ 0x260001e,
+ 0x270001e,
+ 0x280001e,
+ 0x290001e,
+ 0x2a0001e,
+ 0x2b0001e,
+ 0x2c0001e,
+ 0x2d0001e,
+ 0x2e0001e,
+ 0x2f0001e,
+ 0x300001e,
+ 0x310001e,
+ 0x320001e,
+ 0x330001e,
+ 0x340001e,
+ 0x350001e,
+ 0x360001e,
+ 0x370001e,
+ 0x380001e,
+ 0x390001e,
+ 0x3a0001e,
+ 0x3b0001e,
+ 0x3c0001e,
+ 0x3d0001e,
+ 0x3e0001e,
+ 0x3f0001e,
+ 0x400001e,
+ 0x410001e,
+ 0x420001e,
+ 0x430001e,
+ 0x440001e,
+ 0x450001e,
+ 0x460001e,
+ 0x470001e,
+ 0x480001e,
+ 0x490001e,
+ 0x4a0001e,
+ 0x4b0001e,
+ 0x4c0001e,
+ 0x4d0001e,
+ 0x4e0001e,
+ 0x4f0001e,
+ 0x500001e,
+ 0x510001e,
+ 0x520001e,
+ 0x530001e,
+ 0x540001e,
+ 0x550001e,
+ 0x560001e,
+ 0x570001e,
+ 0x580001e,
+ 0x590001e,
+ 0x5a0001e,
+ 0x5b0001e,
+ 0x5c0001e,
+ 0x5d0001e,
+ 0x5e0001e,
+ 0x5f0001e,
+ 0x600001e,
+ 0x610001e,
+ 0x620001e,
+ 0x630001e,
+ 0x640001e,
+ 0x650001e,
+ 0x660001e,
+ 0x670001e,
+ 0x680001e,
+ 0x690001e,
+ 0x6a0001e,
+ 0x6b0001e,
+ 0x6c0001e,
+ 0x6d0001e,
+ 0x6e0001e,
+ 0x6f0001e,
+ 0x700001e,
+ 0x710001e,
+ 0x720001e,
+ 0x730001e,
+ 0x740001e,
+ 0x750001e,
+ 0x760001e,
+ 0x770001e,
+ 0x780001e,
+ 0x790001e,
+ 0x7a0001e,
+ 0x7b0001e,
+ 0x7c0001e,
+ 0x7d0001e,
+ 0x7e0001e,
+ 0x7f0001e,
+ 0x800001e,
+ 0x810001e,
+ 0x820001e,
+ 0x830001e,
+ 0x840001e,
+ 0x850001e,
+ 0x860001e,
+ 0x870001e,
+ 0x880001e,
+ 0x890001e,
+ 0x8a0001e,
+ 0x8b0001e,
+ 0x8c0001e,
+ 0x8d0001e,
+ 0x8e0001e,
+ 0x8f0001e,
+ 0x900001e,
+ 0x910001e,
+ 0x920001e,
+ 0x930001e,
+ 0x940001e,
+ 0x950001e,
+ 0x960001e,
+ 0x970001e,
+ 0x980001e,
+ 0x990001e,
+ 0x9a0001e,
+ 0x9b0001e,
+ 0x9c0001e,
+ 0x9d0001e,
+ 0x9e0001e,
+ 0x9f0001e,
+ 0xa00001e,
+ 0xa10001e,
+ 0xa20001e,
+ 0xa30001e,
+ 0xa40001e,
+ 0xa50001e,
+ 0xa60001e,
+ 0xa70001e,
+ 0xa80001e,
+ 0xa90001e,
+ 0xaa0001e,
+ 0xab0001e,
+ 0xac0001e,
+ 0xad0001e,
+ 0xae0001e,
+ 0xaf0001e,
+ 0xb00001e,
+ 0xb10001e,
+ 0xb20001e,
+ 0xb30001e,
+ 0xb40001e,
+ 0xb50001e,
+ 0xb60001e,
+ 0xb70001e,
+ 0xb80001e,
+ 0xb90001e,
+ 0xba0001e,
+ 0xbb0001e,
+ 0xbc0001e,
+ 0xbd0001e,
+ 0xbe0001e,
+ 0xbf0001e,
+ 0xc00001e,
+ 0xc10001e,
+ 0xc20001e,
+ 0xc30001e,
+ 0xc40001e,
+ 0xc50001e,
+ 0xc60001e,
+ 0xc70001e,
+ 0xc80001e,
+ 0xc90001e,
+ 0xca0001e,
+ 0xcb0001e,
+ 0xcc0001e,
+ 0xcd0001e,
+ 0xce0001e,
+ 0xcf0001e,
+ 0xd00001e,
+ 0xd10001e,
+ 0xd20001e,
+ 0xd30001e,
+ 0xd40001e,
+ 0xd50001e,
+ 0xd60001e,
+ 0xd70001e,
+ 0xd80001e,
+ 0xd90001e,
+ 0xda0001e,
+ 0xdb0001e,
+ 0xdc0001e,
+ 0xdd0001e,
+ 0xde0001e,
+ 0xdf0001e,
+ 0xe00001e,
+ 0xe10001e,
+ 0xe20001e,
+ 0xe30001e,
+ 0xe40001e,
+ 0xe50001e,
+ 0xe60001e,
+ 0xe70001e,
+ 0xe80001e,
+ 0xe90001e,
+ 0xea0001e,
+ 0xeb0001e,
+ 0xec0001e,
+ 0xed0001e,
+ 0xee0001e,
+ 0xef0001e,
+ 0x400001e /* default */
+ }
+};
+
+/* a self contained prom info structure */
+struct leon_reloc_func {
+ struct property *(*find_property) (int node, char *name);
+ int (*strcmp) (char *s1, char *s2);
+ void *(*memcpy) (void *dest, const void *src, size_t n);
+ void (*reboot_physical) (char *cmd);
+ ambapp_dev_apbuart *leon3_apbuart;
+};
+
+struct leon_prom_info {
+ int freq_khz;
+ int leon_nctx;
+ int mids[32];
+ int baudrates[2];
+ struct leon_reloc_func reloc_funcs;
+ struct property root_properties[4];
+ struct property cpu_properties[7];
+#undef CPUENTRY
+#define CPUENTRY(idx) struct property cpu_properties##idx[4]
+ CPUENTRY(1);
+ CPUENTRY(2);
+ CPUENTRY(3);
+ CPUENTRY(4);
+ CPUENTRY(5);
+ CPUENTRY(6);
+ CPUENTRY(7);
+ CPUENTRY(8);
+ CPUENTRY(9);
+ CPUENTRY(10);
+ CPUENTRY(11);
+ CPUENTRY(12);
+ CPUENTRY(13);
+ CPUENTRY(14);
+ CPUENTRY(15);
+ CPUENTRY(16);
+ CPUENTRY(17);
+ CPUENTRY(18);
+ CPUENTRY(19);
+ CPUENTRY(20);
+ CPUENTRY(21);
+ CPUENTRY(22);
+ CPUENTRY(23);
+ CPUENTRY(24);
+ CPUENTRY(25);
+ CPUENTRY(26);
+ CPUENTRY(27);
+ CPUENTRY(28);
+ CPUENTRY(29);
+ CPUENTRY(30);
+ CPUENTRY(31);
+ struct idprom idprom;
+ struct linux_nodeops nodeops;
+ struct linux_mlist_v0 *totphys_p;
+ struct linux_mlist_v0 totphys;
+ struct linux_mlist_v0 *avail_p;
+ struct linux_mlist_v0 avail;
+ struct linux_mlist_v0 *prommap_p;
+ void (*synchook) (void);
+ struct linux_arguments_v0 *bootargs_p;
+ struct linux_arguments_v0 bootargs;
+ struct linux_romvec romvec;
+ struct node nodes[35];
+ char s_device_type[12];
+ char s_cpu[4];
+ char s_mid[4];
+ char s_idprom[7];
+ char s_compatability[14];
+ char s_leon2[6];
+ char s_mmu_nctx[9];
+ char s_frequency[16];
+ char s_uart1_baud[11];
+ char s_uart2_baud[11];
+ char arg[256];
+};
+
+/* static prom info */
+static struct leon_prom_info PROM_DATA spi = {
+ CONFIG_SYS_CLK_FREQ / 1000,
+ 256,
+ {
+#undef CPUENTRY
+#define CPUENTRY(idx) idx
+ CPUENTRY(0),
+ CPUENTRY(1),
+ CPUENTRY(2),
+ CPUENTRY(3),
+ CPUENTRY(4),
+ CPUENTRY(5),
+ CPUENTRY(6),
+ CPUENTRY(7),
+ CPUENTRY(8),
+ CPUENTRY(9),
+ CPUENTRY(10),
+ CPUENTRY(11),
+ CPUENTRY(12),
+ CPUENTRY(13),
+ CPUENTRY(14),
+ CPUENTRY(15),
+ CPUENTRY(16),
+ CPUENTRY(17),
+ CPUENTRY(18),
+ CPUENTRY(19),
+ CPUENTRY(20),
+ CPUENTRY(21),
+ CPUENTRY(22),
+ CPUENTRY(23),
+ CPUENTRY(24),
+ CPUENTRY(25),
+ CPUENTRY(26),
+ CPUENTRY(27),
+ CPUENTRY(28),
+ CPUENTRY(29),
+ CPUENTRY(30),
+ 31},
+ {38400, 38400},
+ {
+ __va(find_property),
+ __va(leon_strcmp),
+ __va(leon_memcpy),
+ __phy(leon_reboot_physical),
+ },
+ {
+ {__va(spi.s_device_type), __va(spi.s_idprom), 4},
+ {__va(spi.s_idprom), (char *)__va(&spi.idprom), sizeof(struct idprom)},
+ {__va(spi.s_compatability), __va(spi.s_leon2), 5},
+ {NULL, NULL, -1}
+ },
+ {
+ {__va(spi.s_device_type), __va(spi.s_cpu), 4},
+ {__va(spi.s_mid), __va(&spi.mids[0]), 4},
+ {__va(spi.s_mmu_nctx), (char *)__va(&spi.leon_nctx), 4},
+ {__va(spi.s_frequency), (char *)__va(&spi.freq_khz), 4},
+ {__va(spi.s_uart1_baud), (char *)__va(&spi.baudrates[0]), 4},
+ {__va(spi.s_uart2_baud), (char *)__va(&spi.baudrates[1]), 4},
+ {NULL, NULL, -1}
+ },
+#undef CPUENTRY
+#define CPUENTRY(idx) \
+ { /* cpu_properties */ \
+ {__va(spi.s_device_type), __va(spi.s_cpu), 4}, \
+ {__va(spi.s_mid), __va(&spi.mids[idx]), 4}, \
+ {__va(spi.s_frequency), (char *)__va(&spi.freq_khz), 4}, \
+ {NULL, NULL, -1} \
+ }
+ CPUENTRY(1),
+ CPUENTRY(2),
+ CPUENTRY(3),
+ CPUENTRY(4),
+ CPUENTRY(5),
+ CPUENTRY(6),
+ CPUENTRY(7),
+ CPUENTRY(8),
+ CPUENTRY(9),
+ CPUENTRY(10),
+ CPUENTRY(11),
+ CPUENTRY(12),
+ CPUENTRY(13),
+ CPUENTRY(14),
+ CPUENTRY(15),
+ CPUENTRY(16),
+ CPUENTRY(17),
+ CPUENTRY(18),
+ CPUENTRY(19),
+ CPUENTRY(20),
+ CPUENTRY(21),
+ CPUENTRY(22),
+ CPUENTRY(23),
+ CPUENTRY(24),
+ CPUENTRY(25),
+ CPUENTRY(26),
+ CPUENTRY(27),
+ CPUENTRY(28),
+ CPUENTRY(29),
+ CPUENTRY(30),
+ CPUENTRY(31),
+ {
+ 0x01, /* format */
+ M_LEON2 | M_LEON2_SOC, /* machine type */
+ {0, 0, 0, 0, 0, 0}, /* eth */
+ 0, /* date */
+ 0, /* sernum */
+ 0, /* checksum */
+ {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* reserved */
+ },
+ {
+ __va(no_nextnode),
+ __va(no_child),
+ __va(no_proplen),
+ __va(no_getprop),
+ __va(no_setprop),
+ __va(no_nextprop)
+ },
+ __va(&spi.totphys),
+ {
+ NULL,
+ (char *)CFG_SDRAM_BASE,
+ 0,
+ },
+ __va(&spi.avail),
+ {
+ NULL,
+ (char *)CFG_SDRAM_BASE,
+ 0,
+ },
+ NULL, /* prommap_p */
+ NULL,
+ __va(&spi.bootargs),
+ {
+ {NULL, __va(spi.arg), NULL /*... */ },
+ /*... */
+ },
+ {
+ 0,
+ 0, /* sun4c v0 prom */
+ 0, 0,
+ {__va(&spi.totphys_p), __va(&spi.prommap_p), __va(&spi.avail_p)},
+ __va(&spi.nodeops),
+ NULL, {NULL /* ... */ },
+ NULL, NULL,
+ NULL, NULL, /* pv_getchar, pv_putchar */
+ __va(leon_nbgetchar), __va(leon_nbputchar),
+ NULL,
+ __va(leon_reboot),
+ NULL,
+ NULL,
+ NULL,
+ __va(leon_halt),
+ __va(&spi.synchook),
+ {NULL},
+ __va(&spi.bootargs_p)
+ /*... */
+ },
+ {
+ {0, __va(spi.root_properties + 3) /* NULL, NULL, -1 */ },
+ {0, __va(spi.root_properties)},
+ /* cpu 0, must be spi.nodes[2] see leon_prom_init() */
+ {1, __va(spi.cpu_properties)},
+
+#undef CPUENTRY
+#define CPUENTRY(idx) \
+ {1, __va(spi.cpu_properties##idx) } /* cpu <idx> */
+ CPUENTRY(1),
+ CPUENTRY(2),
+ CPUENTRY(3),
+ CPUENTRY(4),
+ CPUENTRY(5),
+ CPUENTRY(6),
+ CPUENTRY(7),
+ CPUENTRY(8),
+ CPUENTRY(9),
+ CPUENTRY(10),
+ CPUENTRY(11),
+ CPUENTRY(12),
+ CPUENTRY(13),
+ CPUENTRY(14),
+ CPUENTRY(15),
+ CPUENTRY(16),
+ CPUENTRY(17),
+ CPUENTRY(18),
+ CPUENTRY(19),
+ CPUENTRY(20),
+ CPUENTRY(21),
+ CPUENTRY(22),
+ CPUENTRY(23),
+ CPUENTRY(24),
+ CPUENTRY(25),
+ CPUENTRY(26),
+ CPUENTRY(27),
+ CPUENTRY(28),
+ CPUENTRY(29),
+ CPUENTRY(30),
+ CPUENTRY(31),
+ {-1, __va(spi.root_properties + 3) /* NULL, NULL, -1 */ }
+ },
+ "device_type",
+ "cpu",
+ "mid",
+ "idprom",
+ "compatability",
+ "leon2",
+ "mmu-nctx",
+ "clock-frequency",
+ "uart1_baud",
+ "uart2_baud",
+ CONFIG_DEFAULT_KERNEL_COMMAND_LINE
+};
+
+/* from arch/sparc/kernel/setup.c */
+#define RAMDISK_LOAD_FLAG 0x4000
+extern unsigned short root_flags;
+extern unsigned short root_dev;
+extern unsigned short ram_flags;
+extern unsigned int sparc_ramdisk_image;
+extern unsigned int sparc_ramdisk_size;
+extern int root_mountflags;
+
+extern char initrd_end, initrd_start;
+
+/* Reboot the CPU = jump to beginning of flash again.
+ *
+ * Make sure that all function are inlined here.
+ */
+static void PROM_TEXT leon_reboot(char *bcommand)
+{
+ register char *arg = bcommand;
+ void __attribute__ ((noreturn)) (*reboot_physical) (char *cmd);
+
+ /* get physical address */
+ struct leon_prom_info *pspi =
+ (void *)(CFG_PROM_OFFSET + sizeof(srmmu_tables));
+
+ unsigned int *srmmu_ctx_table;
+
+ /* Turn of Interrupts */
+ set_pil(0xf);
+
+ /* Set kernel's context, context zero */
+ srmmu_set_context(0);
+
+ /* Get physical address of the MMU shutdown routine */
+ reboot_physical = (void *)
+ SPARC_BYPASS_READ(&pspi->reloc_funcs.reboot_physical);
+
+ /* Now that we know the physical address of the function
+ * we can make the MMU allow jumping to it.
+ */
+ srmmu_ctx_table = (unsigned int *)srmmu_get_ctable_ptr();
+
+ srmmu_ctx_table = (unsigned int *)SPARC_BYPASS_READ(srmmu_ctx_table);
+
+ /* get physical address of kernel's context table (assume ptd) */
+ srmmu_ctx_table = (unsigned int *)
+ (((unsigned int)srmmu_ctx_table & 0xfffffffc) << 4);
+
+ /* enable access to physical address of MMU shutdown function */
+ SPARC_BYPASS_WRITE(&srmmu_ctx_table
+ [((unsigned int)reboot_physical) >> 24],
+ (((unsigned int)reboot_physical & 0xff000000) >> 4) |
+ 0x1e);
+
+ /* flush TLB cache */
+ leon_flush_tlb_all();
+
+ /* flash instruction & data cache */
+ sparc_icache_flush_all();
+ sparc_dcache_flush_all();
+
+ /* jump to physical address function
+ * so that when the MMU is disabled
+ * we can continue to execute
+ */
+ reboot_physical(arg);
+}
+
+static void PROM_TEXT leon_reboot_physical(char *bcommand)
+{
+ void __attribute__ ((noreturn)) (*reset) (void);
+
+ /* Turn off MMU */
+ srmmu_set_mmureg(0);
+
+ /* Hardcoded start address */
+ reset = CFG_MONITOR_BASE;
+
+ /* flush data cache */
+ sparc_dcache_flush_all();
+
+ /* flush instruction cache */
+ sparc_icache_flush_all();
+
+ /* Jump to start in Flash */
+ reset();
+}
+
+static void PROM_TEXT leon_halt(void)
+{
+ while (1) ;
+}
+
+/* get single char, don't care for blocking*/
+static int PROM_TEXT leon_nbgetchar(void)
+{
+ return -1;
+}
+
+/* put single char, don't care for blocking*/
+static int PROM_TEXT leon_nbputchar(int c)
+{
+ ambapp_dev_apbuart *uart;
+
+ /* get physical address */
+ struct leon_prom_info *pspi =
+ (void *)(CFG_PROM_OFFSET + sizeof(srmmu_tables));
+
+ uart = (ambapp_dev_apbuart *)
+ SPARC_BYPASS_READ(&pspi->reloc_funcs.leon3_apbuart);
+
+ /* no UART? */
+ if (!uart)
+ return 0;
+
+ /***** put char in buffer... ***********
+ * Make sure all functions are inline! *
+ ***************************************/
+
+ /* Wait for last character to go. */
+ while (!(SPARC_BYPASS_READ(&uart->status)
+ & LEON_REG_UART_STATUS_THE)) ;
+
+ /* Send data */
+ SPARC_BYPASS_WRITE(&uart->data, c);
+
+ /* Wait for data to be sent */
+ while (!(SPARC_BYPASS_READ(&uart->status)
+ & LEON_REG_UART_STATUS_TSE)) ;
+
+ return 0;
+}
+
+/* node ops */
+
+/*#define nodes ((struct node *)__va(&pspi->nodes))*/
+#define nodes ((struct node *)(pspi->nodes))
+
+static int PROM_TEXT no_nextnode(int node)
+{
+ /* get physical address */
+ struct leon_prom_info *pspi =
+ (void *)(CFG_PROM_OFFSET + sizeof(srmmu_tables));
+
+ /* convert into virtual address */
+ pspi = (struct leon_prom_info *)
+ (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
+
+ if (nodes[node].level == nodes[node + 1].level)
+ return node + 1;
+ return -1;
+}
+
+static int PROM_TEXT no_child(int node)
+{
+ /* get physical address */
+ struct leon_prom_info *pspi = (struct leon_prom_info *)
+ (CFG_PROM_OFFSET + sizeof(srmmu_tables));
+
+ /* convert into virtual address */
+ pspi = (struct leon_prom_info *)
+ (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
+
+ if (nodes[node].level == nodes[node + 1].level - 1)
+ return node + 1;
+ return -1;
+}
+
+static struct property PROM_TEXT *find_property(int node, char *name)
+{
+ /* get physical address */
+ struct leon_prom_info *pspi = (struct leon_prom_info *)
+ (CFG_PROM_OFFSET + sizeof(srmmu_tables));
+
+ /* convert into virtual address */
+ pspi = (struct leon_prom_info *)
+ (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
+
+ struct property *prop = &nodes[node].properties[0];
+ while (prop && prop->name) {
+ if (pspi->reloc_funcs.strcmp(prop->name, name) == 0)
+ return prop;
+ prop++;
+ }
+ return NULL;
+}
+
+static int PROM_TEXT no_proplen(int node, char *name)
+{
+ /* get physical address */
+ struct leon_prom_info *pspi = (struct leon_prom_info *)
+ (CFG_PROM_OFFSET + sizeof(srmmu_tables));
+
+ /* convert into virtual address */
+ pspi = (struct leon_prom_info *)
+ (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
+
+ struct property *prop = pspi->reloc_funcs.find_property(node, name);
+ if (prop)
+ return prop->length;
+ return -1;
+}
+
+static int PROM_TEXT no_getprop(int node, char *name, char *value)
+{
+ /* get physical address */
+ struct leon_prom_info *pspi = (struct leon_prom_info *)
+ (CFG_PROM_OFFSET + sizeof(srmmu_tables));
+
+ /* convert into virtual address */
+ pspi = (struct leon_prom_info *)
+ (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
+
+ struct property *prop = pspi->reloc_funcs.find_property(node, name);
+ if (prop) {
+ pspi->reloc_funcs.memcpy(value, prop->value, prop->length);
+ return 1;
+ }
+ return -1;
+}
+
+static int PROM_TEXT no_setprop(int node, char *name, char *value, int len)
+{
+ return -1;
+}
+
+static char PROM_TEXT *no_nextprop(int node, char *name)
+{
+ /* get physical address */
+ struct leon_prom_info *pspi = (struct leon_prom_info *)
+ (CFG_PROM_OFFSET + sizeof(srmmu_tables));
+ struct property *prop;
+
+ /* convert into virtual address */
+ pspi = (struct leon_prom_info *)
+ (((unsigned int)pspi & 0x0fffffff) | PAGE_OFFSET);
+
+ if (!name || !name[0])
+ return nodes[node].properties[0].name;
+
+ prop = pspi->reloc_funcs.find_property(node, name);
+ if (prop)
+ return prop[1].name;
+ return NULL;
+}
+
+static int PROM_TEXT leon_strcmp(const char *s1, const char *s2)
+{
+ register char result;
+
+ while (1) {
+ result = *s1 - *s2;
+ if (result || !*s1)
+ break;
+ s2++;
+ s1++;
+ }
+
+ return result;
+}
+
+static void *PROM_TEXT leon_memcpy(void *dest, const void *src, size_t n)
+{
+ char *dst = (char *)dest, *source = (char *)src;
+
+ while (n--) {
+ *dst = *source;
+ dst++;
+ source++;
+ }
+ return dest;
+}
+
+#define GETREGSP(sp) __asm__ __volatile__("mov %%sp, %0" : "=r" (sp))
+
+void leon_prom_init(struct leon_prom_info *pspi)
+{
+ unsigned long i;
+ unsigned char cksum, *ptr;
+ char *addr_str, *end;
+ unsigned long sp;
+ GETREGSP(sp);
+
+ pspi->freq_khz = CONFIG_SYS_CLK_FREQ / 1000;
+
+ /* Set Available main memory size */
+ pspi->totphys.num_bytes = CFG_PROM_OFFSET - CFG_SDRAM_BASE;
+ pspi->avail.num_bytes = pspi->totphys.num_bytes;
+
+ /* Set the pointer to the Console UART in romvec */
+ pspi->reloc_funcs.leon3_apbuart = leon3_apbuart;
+
+ {
+ int j = 1;
+#ifdef CONFIG_SMP
+ ambapp_dev_irqmp *b;
+ b = (ambapp_dev_irqmp *) leon3_getapbbase(VENDOR_GAISLER,
+ GAISLER_IRQMP);
+ if (b) {
+ j = 1 + ((LEON3_BYPASS_LOAD_PA(&(b->mpstatus))
+ >> LEON3_IRQMPSTATUS_CPUNR) & 0xf);
+ }
+#endif
+#undef nodes
+ pspi->nodes[2 + j].level = -1;
+ pspi->nodes[2 + j].properties = __va(spi.root_properties + 3);
+ }
+
+ /* Set Ethernet MAC address from environment */
+ if ((addr_str = getenv("ethaddr")) != NULL) {
+ for (i = 0; i < 6; i++) {
+ pspi->idprom.id_ethaddr[i] = addr_str ?
+ simple_strtoul(addr_str, &end, 16) : 0;
+ if (addr_str) {
+ addr_str = (*end) ? end + 1 : end;
+ }
+ }
+ } else {
+ /* HW Address not found in environment,
+ * Set default HW address
+ */
+ pspi->idprom.id_ethaddr[0] = 0;
+ pspi->idprom.id_ethaddr[1] = 0;
+ pspi->idprom.id_ethaddr[2] = 0;
+ pspi->idprom.id_ethaddr[3] = 0;
+ pspi->idprom.id_ethaddr[4] = 0;
+ pspi->idprom.id_ethaddr[5] = 0;
+ }
+
+ ptr = (unsigned char *)&pspi->idprom;
+ for (i = cksum = 0; i <= 0x0E; i++)
+ cksum ^= *ptr++;
+ pspi->idprom.id_cksum = cksum;
+}
+
+static inline void set_cache(unsigned long regval)
+{
+ asm volatile ("sta %0, [%%g0] %1\n\t":: "r" (regval), "i"(2):"memory");
+}
+
+extern unsigned short bss_start, bss_end;
+
+/* mark as section .img.main.text, to be referenced in linker script */
+int prom_init(void)
+{
+ struct leon_prom_info *pspi = (void *)
+ ((((unsigned int)&spi) & PROM_SIZE_MASK) + CFG_PROM_OFFSET);
+
+ /* disable mmu */
+ srmmu_set_mmureg(0x00000000);
+ __asm__ __volatile__("flush\n\t");
+
+ /* init prom info struct */
+ leon_prom_init(pspi);
+
+ kernel_arg_promvec = &pspi->romvec;
+#ifdef PRINT_ROM_VEC
+ printf("Kernel rom vec: 0x%lx\n", (unsigned int)(&pspi->romvec));
+#endif
+ return 0;
+}
+
+/* Copy current kernel boot argument to ROMvec */
+void prepare_bootargs(char *bootargs)
+{
+ struct leon_prom_info *pspi;
+ char *src, *dst;
+ int left;
+
+ /* if no bootargs set, skip copying ==> default bootline */
+ if (bootargs && (*bootargs != '\0')) {
+ pspi = (void *)((((unsigned int)&spi) & PROM_SIZE_MASK) +
+ CFG_PROM_OFFSET);
+ src = bootargs;
+ dst = &pspi->arg[0];
+ left = 255; /* max len */
+ while (*src && left > 0) {
+ *dst++ = *src++;
+ left--;
+ }
+ /* terminate kernel command line string */
+ *dst = 0;
+ }
+}
+
+void srmmu_init_cpu(unsigned int entry)
+{
+ sparc_srmmu_setup *psrmmu_tables = (void *)
+ ((((unsigned int)&srmmu_tables) & PROM_SIZE_MASK) +
+ CFG_PROM_OFFSET);
+
+ /* Make context 0 (kernel's context) point
+ * to our prepared memory mapping
+ */
+#define PTD 1
+ psrmmu_tables->ctx_table[0] =
+ ((unsigned int)&psrmmu_tables->pgd_table[0x00]) >> 4 | PTD;
+
+ /* Set virtual kernel address 0xf0000000
+ * to SRAM/SDRAM address.
+ * Make it READ/WRITE/EXEC to SuperUser
+ */
+#define PTE 2
+#define ACC_SU_ALL 0x1c
+ psrmmu_tables->pgd_table[0xf0] =
+ (CFG_SDRAM_BASE >> 4) | ACC_SU_ALL | PTE;
+ psrmmu_tables->pgd_table[0xf1] =
+ ((CFG_SDRAM_BASE + 0x1000000) >> 4) | ACC_SU_ALL | PTE;
+ psrmmu_tables->pgd_table[0xf2] =
+ ((CFG_SDRAM_BASE + 0x2000000) >> 4) | ACC_SU_ALL | PTE;
+ psrmmu_tables->pgd_table[0xf3] =
+ ((CFG_SDRAM_BASE + 0x3000000) >> 4) | ACC_SU_ALL | PTE;
+ psrmmu_tables->pgd_table[0xf4] =
+ ((CFG_SDRAM_BASE + 0x4000000) >> 4) | ACC_SU_ALL | PTE;
+ psrmmu_tables->pgd_table[0xf5] =
+ ((CFG_SDRAM_BASE + 0x5000000) >> 4) | ACC_SU_ALL | PTE;
+ psrmmu_tables->pgd_table[0xf6] =
+ ((CFG_SDRAM_BASE + 0x6000000) >> 4) | ACC_SU_ALL | PTE;
+ psrmmu_tables->pgd_table[0xf7] =
+ ((CFG_SDRAM_BASE + 0x7000000) >> 4) | ACC_SU_ALL | PTE;
+
+ /* convert rom vec pointer to virtual address */
+ kernel_arg_promvec = (struct linux_romvec *)
+ (((unsigned int)kernel_arg_promvec & 0x0fffffff) | 0xf0000000);
+
+ /* Set Context pointer to point to context table
+ * 256 contexts supported.
+ */
+ srmmu_set_ctable_ptr((unsigned int)&psrmmu_tables->ctx_table[0]);
+
+ /* Set kernel's context, context zero */
+ srmmu_set_context(0);
+
+ /* Invalidate all Cache */
+ __asm__ __volatile__("flush\n\t");
+
+ srmmu_set_mmureg(0x00000001);
+ leon_flush_tlb_all();
+ leon_flush_cache_all();
+}
diff --git a/cpu/leon3/serial.c b/cpu/leon3/serial.c
new file mode 100644
index 0000000..27d5cd3
--- /dev/null
+++ b/cpu/leon3/serial.c
@@ -0,0 +1,139 @@
+/* GRLIB APBUART Serial controller driver
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/leon.h>
+#include <ambapp.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Force cache miss each time a serial controller reg is read */
+#define CACHE_BYPASS 1
+
+#ifdef CACHE_BYPASS
+#define READ_BYTE(var) SPARC_NOCACHE_READ_BYTE((unsigned int)&(var))
+#define READ_HWORD(var) SPARC_NOCACHE_READ_HWORD((unsigned int)&(var))
+#define READ_WORD(var) SPARC_NOCACHE_READ((unsigned int)&(var))
+#define READ_DWORD(var) SPARC_NOCACHE_READ_DWORD((unsigned int)&(var))
+#endif
+
+ambapp_dev_apbuart *leon3_apbuart = NULL;
+
+int serial_init(void)
+{
+ ambapp_apbdev apbdev;
+ unsigned int tmp;
+
+ /* find UART */
+ if (ambapp_apb_first(VENDOR_GAISLER, GAISLER_APBUART, &apbdev) == 1) {
+
+ leon3_apbuart = (ambapp_dev_apbuart *) apbdev.address;
+
+ /* found apbuart, let's init...
+ *
+ * Set scaler / baud rate
+ *
+ * Receiver & transmitter enable
+ */
+ leon3_apbuart->scaler = CFG_GRLIB_APBUART_SCALER;
+
+ /* Let bit 11 be unchanged (debug bit for GRMON) */
+ tmp = READ_WORD(leon3_apbuart->ctrl);
+
+ leon3_apbuart->ctrl = ((tmp & LEON_REG_UART_CTRL_DBG) |
+ LEON_REG_UART_CTRL_RE |
+ LEON_REG_UART_CTRL_TE);
+
+ return 0;
+ }
+ return -1; /* didn't find hardware */
+}
+
+void serial_putc(const char c)
+{
+ if (c == '\n')
+ serial_putc_raw('\r');
+
+ serial_putc_raw(c);
+}
+
+void serial_putc_raw(const char c)
+{
+ if (!leon3_apbuart)
+ return;
+
+ /* Wait for last character to go. */
+ while (!(READ_WORD(leon3_apbuart->status) & LEON_REG_UART_STATUS_THE)) ;
+
+ /* Send data */
+ leon3_apbuart->data = c;
+
+#ifdef LEON_DEBUG
+ /* Wait for data to be sent */
+ while (!(READ_WORD(leon3_apbuart->status) & LEON_REG_UART_STATUS_TSE)) ;
+#endif
+}
+
+void serial_puts(const char *s)
+{
+ while (*s) {
+ serial_putc(*s++);
+ }
+}
+
+int serial_getc(void)
+{
+ if (!leon3_apbuart)
+ return 0;
+
+ /* Wait for a character to arrive. */
+ while (!(READ_WORD(leon3_apbuart->status) & LEON_REG_UART_STATUS_DR)) ;
+
+ /* read data */
+ return READ_WORD(leon3_apbuart->data);
+}
+
+int serial_tstc(void)
+{
+ if (leon3_apbuart)
+ return (READ_WORD(leon3_apbuart->status) &
+ LEON_REG_UART_STATUS_DR);
+ return 0;
+}
+
+/* set baud rate for uart */
+void serial_setbrg(void)
+{
+ /* update baud rate settings, read it from gd->baudrate */
+ unsigned int scaler;
+ if (leon3_apbuart && (gd->baudrate > 0)) {
+ scaler =
+ (((CONFIG_SYS_CLK_FREQ * 10) / (gd->baudrate * 8)) -
+ 5) / 10;
+ leon3_apbuart->scaler = scaler;
+ }
+ return;
+}
diff --git a/cpu/leon3/start.S b/cpu/leon3/start.S
new file mode 100644
index 0000000..807f7e8
--- /dev/null
+++ b/cpu/leon3/start.S
@@ -0,0 +1,616 @@
+/* This is where the SPARC/LEON3 starts
+ * Copyright (C) 2007,
+ * Daniel Hellstrom, daniel@gaisler.com
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <asm/asmmacro.h>
+#include <asm/winmacro.h>
+#include <asm/psr.h>
+#include <asm/stack.h>
+#include <asm/leon.h>
+#include <version.h>
+
+/* Entry for traps which jump to a programmer-specified trap handler. */
+#define TRAPR(H) \
+ wr %g0, 0xfe0, %psr; \
+ mov %g0, %tbr; \
+ ba (H); \
+ mov %g0, %wim;
+
+#define TRAP(H) \
+ mov %psr, %l0; \
+ ba (H); \
+ nop; nop;
+
+#define TRAPI(ilevel) \
+ mov ilevel, %l7; \
+ mov %psr, %l0; \
+ b _irq_entry; \
+ mov %wim, %l3
+
+/* Unexcpected trap will halt the processor by forcing it to error state */
+#undef BAD_TRAP
+#define BAD_TRAP ta 0; nop; nop; nop;
+
+/* Software trap. Treat as BAD_TRAP for the time being... */
+#define SOFT_TRAP TRAP(_hwerr)
+
+#define PSR_INIT 0x1FC0 /* Disable traps, set s and ps */
+#define WIM_INIT 2
+
+/* All traps low-level code here must end with this macro. */
+#define RESTORE_ALL b ret_trap_entry; clr %l6;
+
+#define WRITE_PAUSE nop;nop;nop
+
+WINDOWSIZE = (16 * 4)
+ARGPUSHSIZE = (6 * 4)
+ARGPUSH = (WINDOWSIZE + 4)
+MINFRAME = (WINDOWSIZE + ARGPUSHSIZE + 4)
+
+/* Number of register windows */
+#ifndef CFG_SPARC_NWINDOWS
+#error Must define number of SPARC register windows, default is 8
+#endif
+
+#define STACK_ALIGN 8
+#define SA(X) (((X)+(STACK_ALIGN-1)) & ~(STACK_ALIGN-1))
+
+ .section ".start", "ax"
+ .globl _start, start, _trap_table
+ .globl _irq_entry, nmi_trap
+ .globl _reset_reloc
+
+/* at address 0
+ * Hardware traps
+ */
+start:
+_start:
+_trap_table:
+ TRAPR(_hardreset); ! 00 reset trap
+ BAD_TRAP; ! 01 instruction_access_exception
+ BAD_TRAP; ! 02 illegal_instruction
+ BAD_TRAP; ! 03 priveleged_instruction
+ BAD_TRAP; ! 04 fp_disabled
+ TRAP(_window_overflow); ! 05 window_overflow
+ TRAP(_window_underflow); ! 06 window_underflow
+ BAD_TRAP; ! 07 Memory Address Not Aligned
+ BAD_TRAP; ! 08 Floating Point Exception
+ BAD_TRAP; ! 09 Data Miss Exception
+ BAD_TRAP; ! 0a Tagged Instruction Ovrflw
+ BAD_TRAP; ! 0b Watchpoint Detected
+ BAD_TRAP; ! 0c
+ BAD_TRAP; ! 0d
+ BAD_TRAP; ! 0e
+ BAD_TRAP; ! 0f
+ BAD_TRAP; ! 10
+ TRAPI(1); ! 11 IRQ level 1
+ TRAPI(2); ! 12 IRQ level 2
+ TRAPI(3); ! 13 IRQ level 3
+ TRAPI(4); ! 14 IRQ level 4
+ TRAPI(5); ! 15 IRQ level 5
+ TRAPI(6); ! 16 IRQ level 6
+ TRAPI(7); ! 17 IRQ level 7
+ TRAPI(8); ! 18 IRQ level 8
+ TRAPI(9); ! 19 IRQ level 9
+ TRAPI(10); ! 1a IRQ level 10
+ TRAPI(11); ! 1b IRQ level 11
+ TRAPI(12); ! 1c IRQ level 12
+ TRAPI(13); ! 1d IRQ level 13
+ TRAPI(14); ! 1e IRQ level 14
+ TRAP(_nmi_trap); ! 1f IRQ level 15 /
+ ! NMI (non maskable interrupt)
+ BAD_TRAP; ! 20 r_register_access_error
+ BAD_TRAP; ! 21 instruction access error
+ BAD_TRAP; ! 22
+ BAD_TRAP; ! 23
+ BAD_TRAP; ! 24 co-processor disabled
+ BAD_TRAP; ! 25 uniplemented FLUSH
+ BAD_TRAP; ! 26
+ BAD_TRAP; ! 27
+ BAD_TRAP; ! 28 co-processor exception
+ BAD_TRAP; ! 29 data access error
+ BAD_TRAP; ! 2a division by zero
+ BAD_TRAP; ! 2b data store error
+ BAD_TRAP; ! 2c data access MMU miss
+ BAD_TRAP; ! 2d
+ BAD_TRAP; ! 2e
+ BAD_TRAP; ! 2f
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 30-33
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 34-37
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 38-3b
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 3c-3f
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 40-43
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 44-47
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 48-4b
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 4c-4f
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 50-53
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 54-57
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 58-5b
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 5c-5f
+
+ /* implementaion dependent */
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 60-63
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 64-67
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 68-6b
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 6c-6f
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 70-73
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 74-77
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 78-7b
+ BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 7c-7f
+
+ /* Software traps, not handled */
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 80-83
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 84-87
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 88-8b
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 8c-8f
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 90-93
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 94-97
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 98-9b
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 9c-9f
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! a0-a3
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! a4-a7
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! a8-ab
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! ac-af
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! b0-b3
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! b4-b7
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! b8-bb
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! bc-bf
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! c0-c3
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! c4-c7
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! c8-cb
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! cc-cf
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! d0-d3
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! d4-d7
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! d8-db
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! dc-df
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! e0-e3
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! e4-e7
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! e8-eb
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! ec-ef
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! f0-f3
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! f4-f7
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! f8-fb
+ SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! fc-ff
+/*
+ * Version string
+ */
+
+ .data
+ .extern leon3_snooping_avail
+ .globl version_string
+version_string:
+ .ascii U_BOOT_VERSION
+ .ascii " (", __DATE__, " - ", __TIME__, ")"
+ .ascii CONFIG_IDENT_STRING, "\0"
+
+ .section ".text"
+ .align 4
+
+_hardreset:
+1000:
+ flush
+
+ /* Enable I/D-Cache and Snooping */
+ set 0x0081000f, %g2
+ sta %g2, [%g0] 2
+
+ mov %g0, %y
+ clr %g1
+ clr %g2
+ clr %g3
+ clr %g4
+ clr %g5
+ clr %g6
+ clr %g7
+
+ mov %asr17, %g3
+ and %g3, 0x1f, %g3
+clear_window:
+ mov %g0, %l0
+ mov %g0, %l1
+ mov %g0, %l2
+ mov %g0, %l3
+ mov %g0, %l4
+ mov %g0, %l5
+ mov %g0, %l6
+ mov %g0, %l7
+ mov %g0, %o0
+ mov %g0, %o1
+ mov %g0, %o2
+ mov %g0, %o3
+ mov %g0, %o4
+ mov %g0, %o5
+ mov %g0, %o6
+ mov %g0, %o7
+ subcc %g3, 1, %g3
+ bge clear_window
+ save
+
+wininit:
+ set WIM_INIT, %g3
+ mov %g3, %wim
+
+stackp:
+ set CFG_INIT_SP_OFFSET, %fp
+ andn %fp, 0x0f, %fp
+ sub %fp, 64, %sp
+
+cpu_init_unreloc:
+ call cpu_init_f
+ nop
+
+/* un relocated start address of monitor */
+#define TEXT_START _text
+
+/* un relocated end address of monitor */
+#define DATA_END __init_end
+
+reloc:
+ set TEXT_START,%g2
+ set DATA_END,%g3
+ set CFG_RELOC_MONITOR_BASE,%g4
+reloc_loop:
+ ldd [%g2],%l0
+ ldd [%g2+8],%l2
+ std %l0,[%g4]
+ std %l2,[%g4+8]
+ inc 16,%g2
+ subcc %g3,%g2,%g0
+ bne reloc_loop
+ inc 16,%g4
+
+ clr %l0
+ clr %l1
+ clr %l2
+ clr %l3
+ clr %g2
+
+/* register g4 contain address to start
+ * This means that BSS must be directly after data and code segments
+ *
+ * g3 is length of bss = (__bss_end-__bss_start)
+ *
+ */
+
+clr_bss:
+/* clear bss area (the relocated) */
+ set __bss_start,%g2
+ set __bss_end,%g3
+ sub %g3,%g2,%g3
+ add %g3,%g4,%g3
+ clr %g1 /* std %g0 uses g0 and g1 */
+/* clearing 16byte a time ==> linker script need to align to 16 byte offset */
+clr_bss_16:
+ std %g0,[%g4]
+ std %g0,[%g4+8]
+ inc 16,%g4
+ cmp %g3,%g4
+ bne clr_bss_16
+ nop
+
+/* add offsets to GOT table */
+fixup_got:
+ set __got_start,%g4
+ set __got_end,%g3
+/*
+ * new got offset = (old GOT-PTR (read with ld) -
+ * CFG_RELOC_MONITOR_BASE(from define) ) +
+ * Destination Address (from define)
+ */
+ set CFG_RELOC_MONITOR_BASE,%g2
+ set TEXT_START, %g1
+ add %g4,%g2,%g4
+ sub %g4,%g1,%g4
+ add %g3,%g2,%g3
+ sub %g3,%g1,%g3
+ sub %g2,%g1,%g2 ! prepare register with (new base address) -
+ ! (old base address)
+got_loop:
+ ld [%g4],%l0 ! load old GOT-PTR
+ add %l0,%g2,%l0 ! increase with (new base address) -
+ ! (old base)
+ st %l0,[%g4]
+ inc 4,%g4
+ cmp %g3,%g4
+ bne got_loop
+ nop
+
+prom_relocate:
+ set __prom_start, %g2
+ set __prom_end, %g3
+ set CFG_PROM_OFFSET, %g4
+
+prom_relocate_loop:
+ ldd [%g2],%l0
+ ldd [%g2+8],%l2
+ std %l0,[%g4]
+ std %l2,[%g4+8]
+ inc 16,%g2
+ subcc %g3,%g2,%g0
+ bne prom_relocate_loop
+ inc 16,%g4
+
+/* Trap table has been moved, lets tell CPU about
+ * the new trap table address
+ */
+
+ set CFG_RELOC_MONITOR_BASE, %g2
+ wr %g0, %g2, %tbr
+ nop
+ nop
+ nop
+
+/* If CACHE snooping is available in hardware the
+ * variable leon3_snooping_avail will be set to
+ * 0x800000 else 0.
+ */
+snoop_detect:
+ sethi %hi(0x00800000), %o0
+ lda [%g0] 2, %o1
+ and %o0, %o1, %o0
+ sethi %hi(leon3_snooping_avail+CFG_RELOC_MONITOR_BASE-TEXT_BASE), %o1
+ st %o0, [%lo(leon3_snooping_avail+CFG_RELOC_MONITOR_BASE-TEXT_BASE)+%o1]
+
+/* call relocate*/
+ nop
+/* Call relocated init functions */
+jump:
+ set cpu_init_f2,%o1
+ set CFG_RELOC_MONITOR_BASE,%o2
+ add %o1,%o2,%o1
+ sub %o1,%g1,%o1
+ call %o1
+ clr %o0
+
+ set board_init_f,%o1
+ set CFG_RELOC_MONITOR_BASE,%o2
+ add %o1,%o2,%o1
+ sub %o1,%g1,%o1
+ call %o1
+ clr %o0
+
+dead: ta 0 ! if call returns...
+ nop
+
+/* Interrupt handler caller,
+ * reg L7: interrupt number
+ * reg L0: psr after interrupt
+ * reg L1: PC
+ * reg L2: next PC
+ * reg L3: wim
+ */
+_irq_entry:
+ SAVE_ALL
+
+ or %l0, PSR_PIL, %g2
+ wr %g2, 0x0, %psr
+ WRITE_PAUSE
+ wr %g2, PSR_ET, %psr
+ WRITE_PAUSE
+ mov %l7, %o0 ! irq level
+ set handler_irq, %o1
+ set (CFG_RELOC_MONITOR_BASE-TEXT_BASE), %o2
+ add %o1, %o2, %o1
+ call %o1
+ add %sp, SF_REGS_SZ, %o1 ! pt_regs ptr
+ or %l0, PSR_PIL, %g2 ! restore PIL after handler_irq
+ wr %g2, PSR_ET, %psr ! keep ET up
+ WRITE_PAUSE
+
+ RESTORE_ALL
+
+!Window overflow trap handler.
+ .global _window_overflow
+
+_window_overflow:
+
+ mov %wim, %l3 ! Calculate next WIM
+ mov %g1, %l7
+ srl %l3, 1, %g1
+ sll %l3, (CFG_SPARC_NWINDOWS-1) , %l4
+ or %l4, %g1, %g1
+
+ save ! Get into window to be saved.
+ mov %g1, %wim
+ nop;
+ nop;
+ nop
+ st %l0, [%sp + 0];
+ st %l1, [%sp + 4];
+ st %l2, [%sp + 8];
+ st %l3, [%sp + 12];
+ st %l4, [%sp + 16];
+ st %l5, [%sp + 20];
+ st %l6, [%sp + 24];
+ st %l7, [%sp + 28];
+ st %i0, [%sp + 32];
+ st %i1, [%sp + 36];
+ st %i2, [%sp + 40];
+ st %i3, [%sp + 44];
+ st %i4, [%sp + 48];
+ st %i5, [%sp + 52];
+ st %i6, [%sp + 56];
+ st %i7, [%sp + 60];
+ restore ! Go back to trap window.
+ mov %l7, %g1
+ jmp %l1 ! Re-execute save.
+ rett %l2
+
+/* Window underflow trap handler. */
+
+ .global _window_underflow
+
+_window_underflow:
+
+ mov %wim, %l3 ! Calculate next WIM
+ sll %l3, 1, %l4
+ srl %l3, (CFG_SPARC_NWINDOWS-1), %l5
+ or %l5, %l4, %l5
+ mov %l5, %wim
+ nop; nop; nop
+ restore ! Two restores to get into the
+ restore ! window to restore
+ ld [%sp + 0], %l0; ! Restore window from the stack
+ ld [%sp + 4], %l1;
+ ld [%sp + 8], %l2;
+ ld [%sp + 12], %l3;
+ ld [%sp + 16], %l4;
+ ld [%sp + 20], %l5;
+ ld [%sp + 24], %l6;
+ ld [%sp + 28], %l7;
+ ld [%sp + 32], %i0;
+ ld [%sp + 36], %i1;
+ ld [%sp + 40], %i2;
+ ld [%sp + 44], %i3;
+ ld [%sp + 48], %i4;
+ ld [%sp + 52], %i5;
+ ld [%sp + 56], %i6;
+ ld [%sp + 60], %i7;
+ save ! Get back to the trap window.
+ save
+ jmp %l1 ! Re-execute restore.
+ rett %l2
+
+ retl
+
+_nmi_trap:
+ nop
+ jmp %l1
+ rett %l2
+
+_hwerr:
+ ta 0
+ nop
+ nop
+ b _hwerr ! loop infinite
+ nop
+
+/* Registers to not touch at all. */
+#define t_psr l0 /* Set by caller */
+#define t_pc l1 /* Set by caller */
+#define t_npc l2 /* Set by caller */
+#define t_wim l3 /* Set by caller */
+#define t_twinmask l4 /* Set at beginning of this entry routine. */
+#define t_kstack l5 /* Set right before pt_regs frame is built */
+#define t_retpc l6 /* If you change this, change winmacro.h header file */
+#define t_systable l7 /* Never touch this, could be the syscall table ptr. */
+#define curptr g6 /* Set after pt_regs frame is built */
+
+trap_setup:
+/* build a pt_regs trap frame. */
+ sub %fp, (SF_REGS_SZ + PT_REGS_SZ), %t_kstack
+ PT_STORE_ALL(t_kstack, t_psr, t_pc, t_npc, g2)
+
+ /* See if we are in the trap window. */
+ mov 1, %t_twinmask
+ sll %t_twinmask, %t_psr, %t_twinmask ! t_twinmask = (1 << psr)
+ andcc %t_twinmask, %t_wim, %g0
+ beq 1f ! in trap window, clean up
+ nop
+
+ /*-------------------------------------------------
+ * Spill , adjust %wim and go.
+ */
+ srl %t_wim, 0x1, %g2 ! begin computation of new %wim
+
+ set (CFG_SPARC_NWINDOWS-1), %g3 !NWINDOWS-1
+
+ sll %t_wim, %g3, %t_wim ! NWINDOWS-1
+ or %t_wim, %g2, %g2
+ and %g2, 0xff, %g2
+
+ save %g0, %g0, %g0 ! get in window to be saved
+
+ /* Set new %wim value */
+ wr %g2, 0x0, %wim
+
+ /* Save the kernel window onto the corresponding stack. */
+ RW_STORE(sp)
+
+ restore %g0, %g0, %g0
+ /*-------------------------------------------------*/
+
+1:
+ /* Trap from kernel with a window available.
+ * Just do it...
+ */
+ jmpl %t_retpc + 0x8, %g0 ! return to caller
+ mov %t_kstack, %sp ! jump onto new stack
+
+#define twin_tmp1 l4
+#define glob_tmp g4
+#define curptr g6
+ret_trap_entry:
+ wr %t_psr, 0x0, %psr ! enable nesting again, clear ET
+
+ /* Will the rett land us in the invalid window? */
+ mov 2, %g1
+ sll %g1, %t_psr, %g1
+
+ set CFG_SPARC_NWINDOWS, %g2 !NWINDOWS
+
+ srl %g1, %g2, %g2
+ or %g1, %g2, %g1
+ rd %wim, %g2
+ andcc %g2, %g1, %g0
+ be 1f ! Nope, just return from the trap
+ sll %g2, 0x1, %g1
+
+ /* We have to grab a window before returning. */
+ set (CFG_SPARC_NWINDOWS-1), %g3 !NWINDOWS-1
+
+ srl %g2, %g3, %g2
+ or %g1, %g2, %g1
+ and %g1, 0xff, %g1
+
+ wr %g1, 0x0, %wim
+
+ /* Grrr, make sure we load from the right %sp... */
+ PT_LOAD_ALL(sp, t_psr, t_pc, t_npc, g1)
+
+ restore %g0, %g0, %g0
+ RW_LOAD(sp)
+ b 2f
+ save %g0, %g0, %g0
+
+ /* Reload the entire frame in case this is from a
+ * kernel system call or whatever...
+ */
+1:
+ PT_LOAD_ALL(sp, t_psr, t_pc, t_npc, g1)
+2:
+ wr %t_psr, 0x0, %psr
+ nop;
+ nop;
+ nop
+
+ jmp %t_pc
+ rett %t_npc
+
+/* This is called from relocated C-code.
+ * It resets the system by jumping to _start
+ */
+_reset_reloc:
+ set start, %l0
+ call %l0
+ nop
diff --git a/cpu/leon3/usb_uhci.c b/cpu/leon3/usb_uhci.c
new file mode 100644
index 0000000..7910beb
--- /dev/null
+++ b/cpu/leon3/usb_uhci.c
@@ -0,0 +1,1313 @@
+/*
+ * Part of this code has been derived from linux:
+ * Universal Host Controller Interface driver for USB (take II).
+ *
+ * (c) 1999-2001 Georg Acher, acher@in.tum.de (executive slave) (base guitar)
+ * Deti Fliegl, deti@fliegl.de (executive slave) (lead voice)
+ * Thomas Sailer, sailer@ife.ee.ethz.ch (chief consultant) (cheer leader)
+ * Roman Weissgaerber, weissg@vienna.at (virt root hub) (studio porter)
+ * (c) 2000 Yggdrasil Computing, Inc. (port of new PCI interface support
+ * from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
+ * (C) 2000 David Brownell, david-b@pacbell.net (usb-ohci.c)
+ *
+ * HW-initalization based on material of
+ *
+ * (C) Copyright 1999 Linus Torvalds
+ * (C) Copyright 1999 Johannes Erdfelt
+ * (C) Copyright 1999 Randy Dunlap
+ * (C) Copyright 1999 Gregory P. Smith
+ *
+ *
+ * Adapted for U-Boot:
+ * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
+ * (C) Copyright 2008, Daniel Hellström, daniel@gaisler.com
+ * Added AMBA Plug&Play detection of GRUSB, modified interrupt handler.
+ * Added cache flushes where needed.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ *
+ */
+
+/**********************************************************************
+ * How it works:
+ * -------------
+ * The framelist / Transfer descriptor / Queue Heads are similar like
+ * in the linux usb_uhci.c.
+ *
+ * During initialization, the following skeleton is allocated in init_skel:
+ *
+ * framespecific | common chain
+ *
+ * framelist[]
+ * [ 0 ]-----> TD ---------\
+ * [ 1 ]-----> TD ----------> TD ------> QH -------> QH -------> QH ---> NULL
+ * ... TD ---------/
+ * [1023]-----> TD --------/
+ *
+ * ^^ ^^ ^^ ^^ ^^
+ * 7 TDs for 1 TD for Start of Start of End Chain
+ * INT (2-128ms) 1ms-INT CTRL Chain BULK Chain
+ *
+ *
+ * Since this is a bootloader, the isochronous transfer descriptor have been removed.
+ *
+ * Interrupt Transfers.
+ * --------------------
+ * For Interupt transfers USB_MAX_TEMP_INT_TD Transfer descriptor are available. They
+ * will be inserted after the appropriate (depending the interval setting) skeleton TD.
+ * If an interrupt has been detected the dev->irqhandler is called. The status and number
+ * of transfered bytes is stored in dev->irq_status resp. dev->irq_act_len. If the
+ * dev->irqhandler returns 0, the interrupt TD is removed and disabled. If an 1 is returned,
+ * the interrupt TD will be reactivated.
+ *
+ * Control Transfers
+ * -----------------
+ * Control Transfers are issued by filling the tmp_td with the appropriate data and connect
+ * them to the qh_cntrl queue header. Before other control/bulk transfers can be issued,
+ * the programm has to wait for completion. This does not allows asynchronous data transfer.
+ *
+ * Bulk Transfers
+ * --------------
+ * Bulk Transfers are issued by filling the tmp_td with the appropriate data and connect
+ * them to the qh_bulk queue header. Before other control/bulk transfers can be issued,
+ * the programm has to wait for completion. This does not allows asynchronous data transfer.
+ *
+ *
+ */
+
+#include <common.h>
+#include <ambapp.h>
+#include <asm/leon.h>
+#include <asm/leon3.h>
+#include <asm/processor.h>
+
+#ifdef CONFIG_USB_UHCI
+
+#include <usb.h>
+#include "usb_uhci.h"
+
+#define USB_MAX_TEMP_TD 128 /* number of temporary TDs for bulk and control transfers */
+#define USB_MAX_TEMP_INT_TD 32 /* number of temporary TDs for Interrupt transfers */
+
+extern int leon3_snooping_avail;
+/*
+#define out16r(address,data) (*(unsigned short *)(address) = \
+ (unsigned short)( \
+ (((unsigned short)(data)&0xff)<<8) | \
+ (((unsigned short)(data)&0xff00)>>8) \
+ ))
+ */
+#define out16r(address,data) _out16r((unsigned int)(address), (unsigned short)(data))
+void _out16r(unsigned int address, unsigned short data)
+{
+ unsigned short val = (unsigned short)((((unsigned short)(data) & 0xff)
+ << 8) | (((unsigned short)(data)
+ & 0xff00) >> 8));
+#ifdef UHCI_DEBUG_REGS
+ printf("out16r(0x%lx,0x%04x = 0x%04x)\n", address, val, data);
+#endif
+ *(unsigned short *)(address) = val;
+}
+
+#define out32r(address,data) _out32r((unsigned int)(address), (unsigned int)(data))
+void _out32r(unsigned int address, unsigned int data)
+{
+ unsigned int val = (unsigned int)((((unsigned int)(data) & 0x000000ff)
+ << 24) | (((unsigned int)(data) &
+ 0x0000ff00) << 8) |
+ (((unsigned int)(data) & 0x00ff0000)
+ >> 8) | (((unsigned int)(data) &
+ 0xff000000) >> 24));
+#ifdef UHCI_DEBUG_REGS
+ printf("out32r(0x%lx,0x%lx = 0x%lx)\n", address, val, data);
+#endif
+ *(unsigned int *)address = val;
+}
+
+#define in16r(address) _in16r((unsigned int)(address))
+unsigned short _in16r(unsigned int address)
+{
+ unsigned short val = sparc_load_reg_cachemiss_word(address);
+ val = ((val << 8) & 0xff00) | ((val >> 8) & 0xff);
+#ifdef UHCI_DEBUG_REGS
+ printf("in16r(0x%lx): 0x%04x\n", address, val);
+#endif
+ return val;
+}
+
+#define in32r(address) _in32r((unsigned int)(address))
+unsigned int _in32r(unsigned int address)
+{
+ unsigned int val = sparc_load_reg_cachemiss(address);
+ val =
+ ((val << 24) & 0xff000000) | ((val << 8) & 0xff0000) | ((val >> 8) &
+ 0xff00) |
+ ((val >> 24) & 0xff);
+#ifdef UHCI_DEBUG_REGS
+ printf("in32r(0x%lx): 0x%08x\n", address, val);
+#endif
+ return val;
+}
+
+#define READ32(address) sparc_load_reg_cachemiss((unsigned int)(address))
+
+/*#define USB_UHCI_DEBUG*/
+#undef USB_UHCI_DEBUG
+
+void usb_show_td(int max);
+#ifdef USB_UHCI_DEBUG
+void grusb_show_regs(void);
+#define USB_UHCI_PRINTF(fmt,args...) printf (fmt ,##args)
+#else
+#define USB_UHCI_PRINTF(fmt,args...)
+#endif
+
+static int grusb_irq = -1; /* irq vector, if -1 uhci is stopped / reseted */
+unsigned int usb_base_addr; /* base address */
+
+static uhci_td_t td_int[8] __attribute__ ((aligned(16))); /* Interrupt Transfer descriptors */
+static uhci_qh_t qh_cntrl __attribute__ ((aligned(16))); /* control Queue Head */
+static uhci_qh_t qh_bulk __attribute__ ((aligned(16))); /* bulk Queue Head */
+static uhci_qh_t qh_end __attribute__ ((aligned(16))); /* end Queue Head */
+static uhci_td_t td_last __attribute__ ((aligned(16))); /* last TD (linked with end chain) */
+
+/* temporary tds */
+static uhci_td_t tmp_td[USB_MAX_TEMP_TD] __attribute__ ((aligned(16))); /* temporary bulk/control td's */
+static uhci_td_t tmp_int_td[USB_MAX_TEMP_INT_TD] __attribute__ ((aligned(16))); /* temporary interrupt td's */
+
+static unsigned long framelist[1024] __attribute__ ((aligned(0x1000))); /* frame list */
+
+static struct virt_root_hub rh; /* struct for root hub */
+
+/**********************************************************************
+ * some forward decleration
+ */
+int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
+ void *buffer, int transfer_len,
+ struct devrequest *setup);
+
+/* fill a td with the approproiate data. Link, status, info and buffer
+ * are used by the USB controller itselfes, dev is used to identify the
+ * "connected" device
+ */
+void usb_fill_td(uhci_td_t * td, unsigned long link, unsigned long status,
+ unsigned long info, unsigned long buffer, unsigned long dev)
+{
+ td->link = swap_32(link);
+ td->status = swap_32(status);
+ if ((info & UHCI_PID) == 0)
+ info |= USB_PID_OUT;
+ td->info = swap_32(info);
+ td->buffer = swap_32(buffer);
+ td->dev_ptr = dev;
+}
+
+/* fill a qh with the approproiate data. Head and element are used by the USB controller
+ * itselfes. As soon as a valid dev_ptr is filled, a td chain is connected to the qh.
+ * Please note, that after completion of the td chain, the entry element is removed /
+ * marked invalid by the USB controller.
+ */
+void usb_fill_qh(uhci_qh_t * qh, unsigned long head, unsigned long element)
+{
+ qh->head = swap_32(head);
+ qh->element = swap_32(element);
+ qh->dev_ptr = 0L;
+}
+
+/* get the status of a td->status
+ */
+unsigned long usb_uhci_td_stat(unsigned long status)
+{
+ unsigned long result = 0;
+ result |= (status & TD_CTRL_NAK) ? USB_ST_NAK_REC : 0;
+ result |= (status & TD_CTRL_STALLED) ? USB_ST_STALLED : 0;
+ result |= (status & TD_CTRL_DBUFERR) ? USB_ST_BUF_ERR : 0;
+ result |= (status & TD_CTRL_BABBLE) ? USB_ST_BABBLE_DET : 0;
+ result |= (status & TD_CTRL_CRCTIMEO) ? USB_ST_CRC_ERR : 0;
+ result |= (status & TD_CTRL_BITSTUFF) ? USB_ST_BIT_ERR : 0;
+ result |= (status & TD_CTRL_ACTIVE) ? USB_ST_NOT_PROC : 0;
+ return result;
+}
+
+/* get the status and the transfered len of a td chain.
+ * called from the completion handler
+ */
+int usb_get_td_status(uhci_td_t * td, struct usb_device *dev)
+{
+ unsigned long temp, info;
+ unsigned long stat;
+ uhci_td_t *mytd = td;
+
+ if (dev->devnum == rh.devnum)
+ return 0;
+ dev->act_len = 0;
+ stat = 0;
+ do {
+ temp = swap_32((unsigned long)READ32(&mytd->status));
+ stat = usb_uhci_td_stat(temp);
+ info = swap_32((unsigned long)READ32(&mytd->info));
+ if (((info & 0xff) != USB_PID_SETUP) && (((info >> 21) & 0x7ff) != 0x7ff) && (temp & 0x7FF) != 0x7ff) { /* if not setup and not null data pack */
+ dev->act_len += (temp & 0x7FF) + 1; /* the transfered len is act_len + 1 */
+ }
+ if (stat) { /* status no ok */
+ dev->status = stat;
+ return -1;
+ }
+ temp = swap_32((unsigned long)READ32(&mytd->link));
+ mytd = (uhci_td_t *) (temp & 0xfffffff0);
+ } while ((temp & 0x1) == 0); /* process all TDs */
+ dev->status = stat;
+ return 0; /* Ok */
+}
+
+/*-------------------------------------------------------------------
+ * LOW LEVEL STUFF
+ * assembles QHs und TDs for control, bulk and iso
+ *-------------------------------------------------------------------*/
+int dummy(void)
+{
+ USB_UHCI_PRINTF("DUMMY\n");
+ return 0;
+}
+
+/* Submits a control message. That is a Setup, Data and Status transfer.
+ * Routine does not wait for completion.
+ */
+int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len, struct devrequest *setup)
+{
+ unsigned long destination, status;
+ int maxsze = usb_maxpacket(dev, pipe);
+ unsigned long dataptr;
+ int len;
+ int pktsze;
+ int i = 0;
+
+ if (!maxsze) {
+ USB_UHCI_PRINTF
+ ("uhci_submit_control_urb: pipesize for pipe %lx is zero\n",
+ pipe);
+ return -1;
+ }
+ if (((pipe >> 8) & 0x7f) == rh.devnum) {
+ /* this is the root hub -> redirect it */
+ return uhci_submit_rh_msg(dev, pipe, buffer, transfer_len,
+ setup);
+ }
+ USB_UHCI_PRINTF("uhci_submit_control start len %x, maxsize %x\n",
+ transfer_len, maxsze);
+ /* The "pipe" thing contains the destination in bits 8--18 */
+ destination = (pipe & PIPE_DEVEP_MASK) | USB_PID_SETUP; /* Setup stage */
+ /* 3 errors */
+ status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
+ /* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD); */
+ /* Build the TD for the control request, try forever, 8 bytes of data */
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, destination | (7 << 21),
+ (unsigned long)setup, (unsigned long)dev);
+#ifdef DEBUG_EXTRA
+ {
+ char *sp = (char *)setup;
+ printf("SETUP to pipe %lx: %x %x %x %x %x %x %x %x\n", pipe,
+ sp[0], sp[1], sp[2], sp[3], sp[4], sp[5], sp[6], sp[7]);
+ }
+#endif
+ dataptr = (unsigned long)buffer;
+ len = transfer_len;
+
+ /* If direction is "send", change the frame from SETUP (0x2D)
+ to OUT (0xE1). Else change it from SETUP to IN (0x69). */
+ destination =
+ (pipe & PIPE_DEVEP_MASK) | ((pipe & USB_DIR_IN) ==
+ 0 ? USB_PID_OUT : USB_PID_IN);
+ while (len > 0) {
+ /* data stage */
+ pktsze = len;
+ i++;
+ if (pktsze > maxsze)
+ pktsze = maxsze;
+ destination ^= 1 << TD_TOKEN_TOGGLE; /* toggle DATA0/1 */
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, destination | ((pktsze - 1) << 21), dataptr, (unsigned long)dev); /* Status, pktsze bytes of data */
+ tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]);
+
+ dataptr += pktsze;
+ len -= pktsze;
+ }
+
+ /* Build the final TD for control status */
+ /* It's only IN if the pipe is out AND we aren't expecting data */
+
+ destination &= ~UHCI_PID;
+ if (((pipe & USB_DIR_IN) == 0) || (transfer_len == 0))
+ destination |= USB_PID_IN;
+ else
+ destination |= USB_PID_OUT;
+ destination |= 1 << TD_TOKEN_TOGGLE; /* End in Data1 */
+ i++;
+ status &= ~TD_CTRL_SPD;
+ /* no limit on errors on final packet , 0 bytes of data */
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status | TD_CTRL_IOC,
+ destination | (UHCI_NULL_DATA_SIZE << 21), 0,
+ (unsigned long)dev);
+ tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]); /* queue status td */
+ /* usb_show_td(i+1); */
+ USB_UHCI_PRINTF("uhci_submit_control end (%d tmp_tds used)\n", i);
+ /* first mark the control QH element terminated */
+ qh_cntrl.element = 0xffffffffL;
+ /* set qh active */
+ qh_cntrl.dev_ptr = (unsigned long)dev;
+ /* fill in tmp_td_chain */
+ dummy();
+ qh_cntrl.element = swap_32((unsigned long)&tmp_td[0]);
+ return 0;
+}
+
+/*-------------------------------------------------------------------
+ * Prepare TDs for bulk transfers.
+ */
+int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len)
+{
+ unsigned long destination, status, info;
+ unsigned long dataptr;
+ int maxsze = usb_maxpacket(dev, pipe);
+ int len;
+ int i = 0;
+
+ if (transfer_len < 0) {
+ printf("Negative transfer length in submit_bulk\n");
+ return -1;
+ }
+ if (!maxsze)
+ return -1;
+ /* The "pipe" thing contains the destination in bits 8--18. */
+ destination = (pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe);
+ /* 3 errors */
+ status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
+ /* ((urb->transfer_flags & USB_DISABLE_SPD) ? 0 : TD_CTRL_SPD) | (3 << 27); */
+ /* Build the TDs for the bulk request */
+ len = transfer_len;
+ dataptr = (unsigned long)buffer;
+ do {
+ int pktsze = len;
+ if (pktsze > maxsze)
+ pktsze = maxsze;
+ /* pktsze bytes of data */
+ info =
+ destination | (((pktsze - 1) & UHCI_NULL_DATA_SIZE) << 21) |
+ (usb_gettoggle
+ (dev, usb_pipeendpoint(pipe),
+ usb_pipeout(pipe)) << TD_TOKEN_TOGGLE);
+
+ if ((len - pktsze) == 0)
+ status |= TD_CTRL_IOC; /* last one generates INT */
+
+ usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, info, dataptr, (unsigned long)dev); /* Status, pktsze bytes of data */
+ if (i > 0)
+ tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]);
+ i++;
+ dataptr += pktsze;
+ len -= pktsze;
+ usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
+ } while (len > 0);
+ /* first mark the bulk QH element terminated */
+ qh_bulk.element = 0xffffffffL;
+ /* set qh active */
+ qh_bulk.dev_ptr = (unsigned long)dev;
+ /* fill in tmp_td_chain */
+ qh_bulk.element = swap_32((unsigned long)&tmp_td[0]);
+ return 0;
+}
+
+/* search a free interrupt td
+ */
+uhci_td_t *uhci_alloc_int_td(void)
+{
+ int i;
+ for (i = 0; i < USB_MAX_TEMP_INT_TD; i++) {
+ if (tmp_int_td[i].dev_ptr == 0) /* no device assigned -> free TD */
+ return &tmp_int_td[i];
+ }
+ return NULL;
+}
+
+/*-------------------------------------------------------------------
+ * submits USB interrupt (ie. polling ;-)
+ */
+int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len, int interval)
+{
+ int nint, n;
+ unsigned long status, destination;
+ unsigned long info, tmp;
+ uhci_td_t *mytd;
+ if (interval < 0 || interval >= 256)
+ return -1;
+
+ if (interval == 0)
+ nint = 0;
+ else {
+ for (nint = 0, n = 1; nint <= 8; nint++, n += n) { /* round interval down to 2^n */
+ if (interval < n) {
+ interval = n / 2;
+ break;
+ }
+ }
+ nint--;
+ }
+
+ USB_UHCI_PRINTF("Rounded interval to %i, chain %i\n", interval, nint);
+ mytd = uhci_alloc_int_td();
+ if (mytd == NULL) {
+ printf("No free INT TDs found\n");
+ return -1;
+ }
+ status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | TD_CTRL_IOC | (3 << 27);
+/* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD) | (3 << 27);
+*/
+
+ destination =
+ (pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe) |
+ (((transfer_len - 1) & 0x7ff) << 21);
+
+ info =
+ destination |
+ (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)) <<
+ TD_TOKEN_TOGGLE);
+ tmp = swap_32(td_int[nint].link);
+ usb_fill_td(mytd, tmp, status, info, (unsigned long)buffer,
+ (unsigned long)dev);
+ /* Link it */
+ tmp = swap_32((unsigned long)mytd);
+ td_int[nint].link = tmp;
+
+ usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
+
+ return 0;
+}
+
+/**********************************************************************
+ * Low Level functions
+ */
+
+void reset_hc(void)
+{
+
+ /* Global reset for 100ms */
+ out16r(usb_base_addr + USBPORTSC1, 0x0204);
+ out16r(usb_base_addr + USBPORTSC2, 0x0204);
+ out16r(usb_base_addr + USBCMD, USBCMD_GRESET | USBCMD_RS);
+ /* Turn off all interrupts */
+ out16r(usb_base_addr + USBINTR, 0);
+ wait_ms(50);
+ out16r(usb_base_addr + USBCMD, 0);
+ wait_ms(10);
+}
+
+void start_hc(void)
+{
+ int timeout = 1000;
+
+ while (in16r(usb_base_addr + USBCMD) & USBCMD_HCRESET) {
+ if (!--timeout) {
+ printf("USBCMD_HCRESET timed out!\n");
+ break;
+ }
+ }
+ /* Turn on all interrupts */
+ out16r(usb_base_addr + USBINTR,
+ USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC | USBINTR_SP);
+ /* Start at frame 0 */
+ out16r(usb_base_addr + USBFRNUM, 0);
+ /* set Framebuffer base address */
+ out32r(usb_base_addr + USBFLBASEADD, (unsigned long)&framelist);
+ /* Run and mark it configured with a 64-byte max packet */
+ out16r(usb_base_addr + USBCMD, USBCMD_RS | USBCMD_CF | USBCMD_MAXP);
+}
+
+/* Initialize the skeleton
+ */
+void usb_init_skel(void)
+{
+ unsigned long temp;
+ int n;
+
+ for (n = 0; n < USB_MAX_TEMP_INT_TD; n++)
+ tmp_int_td[n].dev_ptr = 0L; /* no devices connected */
+ /* last td */
+ usb_fill_td(&td_last, UHCI_PTR_TERM, TD_CTRL_IOC, USB_PID_OUT, 0, 0L);
+ /* usb_fill_td(&td_last,UHCI_PTR_TERM,0,0,0); */
+ /* End Queue Header */
+ usb_fill_qh(&qh_end, UHCI_PTR_TERM, (unsigned long)&td_last);
+ /* Bulk Queue Header */
+ temp = (unsigned long)&qh_end;
+ usb_fill_qh(&qh_bulk, temp | UHCI_PTR_QH, UHCI_PTR_TERM);
+ /* Control Queue Header */
+ temp = (unsigned long)&qh_bulk;
+ usb_fill_qh(&qh_cntrl, temp | UHCI_PTR_QH, UHCI_PTR_TERM);
+ /* 1ms Interrupt td */
+ temp = (unsigned long)&qh_cntrl;
+ usb_fill_td(&td_int[0], temp | UHCI_PTR_QH, 0, USB_PID_OUT, 0, 0L);
+ temp = (unsigned long)&td_int[0];
+ for (n = 1; n < 8; n++)
+ usb_fill_td(&td_int[n], temp, 0, USB_PID_OUT, 0, 0L);
+ for (n = 0; n < 1024; n++) {
+ /* link all framelist pointers to one of the interrupts */
+ int m, o;
+ if ((n & 127) == 127)
+ framelist[n] = swap_32((unsigned long)&td_int[0]);
+ else
+ for (o = 1, m = 2; m <= 128; o++, m += m)
+ if ((n & (m - 1)) == ((m - 1) / 2))
+ framelist[n] =
+ swap_32((unsigned long)&td_int[o]);
+
+ }
+}
+
+/* check the common skeleton for completed transfers, and update the status
+ * of the "connected" device. Called from the IRQ routine.
+ */
+void usb_check_skel(void)
+{
+ struct usb_device *dev;
+ /* start with the control qh */
+ if (qh_cntrl.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
+ dev = (struct usb_device *)qh_cntrl.dev_ptr;
+ /* Flush cache now that hardware updated DATA and TDs/QHs */
+ if (!leon3_snooping_avail)
+ sparc_dcache_flush_all();
+ usb_get_td_status(&tmp_td[0], dev); /* update status */
+ if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
+ qh_cntrl.dev_ptr = 0;
+ }
+ }
+ /* now process the bulk */
+ if (qh_bulk.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
+ dev = (struct usb_device *)qh_bulk.dev_ptr;
+ /* Flush cache now that hardware updated DATA and TDs/QHs */
+ if (!leon3_snooping_avail)
+ sparc_dcache_flush_all();
+ usb_get_td_status(&tmp_td[0], dev); /* update status */
+ if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
+ qh_bulk.dev_ptr = 0;
+ }
+ }
+}
+
+/* check the interrupt chain, ubdate the status of the appropriate device,
+ * call the appropriate irqhandler and reactivate the TD if the irqhandler
+ * returns with 1
+ */
+void usb_check_int_chain(void)
+{
+ int i, res;
+ unsigned long link, status;
+ struct usb_device *dev;
+ uhci_td_t *td, *prevtd;
+
+ for (i = 0; i < 8; i++) {
+ prevtd = &td_int[i]; /* the first previous td is the skeleton td */
+ link = swap_32(READ32(&td_int[i].link)) & 0xfffffff0; /* next in chain */
+ td = (uhci_td_t *) link; /* assign it */
+ /* all interrupt TDs are finally linked to the td_int[0].
+ * so we process all until we find the td_int[0].
+ * if int0 chain points to a QH, we're also done
+ */
+ while (((i > 0) && (link != (unsigned long)&td_int[0])) ||
+ ((i == 0)
+ && !(swap_32(READ32(&td->link)) & UHCI_PTR_QH))) {
+ /* check if a device is assigned with this td */
+ status = swap_32(READ32(&td->status));
+ if ((td->dev_ptr != 0L) && !(status & TD_CTRL_ACTIVE)) {
+ /* td is not active and a device is assigned -> call irqhandler */
+ dev = (struct usb_device *)td->dev_ptr;
+ dev->irq_act_len = ((status & 0x7FF) == 0x7FF) ? 0 : (status & 0x7FF) + 1; /* transfered length */
+ dev->irq_status = usb_uhci_td_stat(status); /* get status */
+ res = dev->irq_handle(dev); /* call irqhandler */
+ if (res == 1) {
+ /* reactivate */
+ status |= TD_CTRL_ACTIVE;
+ td->status = swap_32(status);
+ prevtd = td; /* previous td = this td */
+ } else {
+ prevtd->link = READ32(&td->link); /* link previous td directly to the nex td -> unlinked */
+ /* remove device pointer */
+ td->dev_ptr = 0L;
+ }
+ } /* if we call the irq handler */
+ link = swap_32(READ32(&td->link)) & 0xfffffff0; /* next in chain */
+ td = (uhci_td_t *) link; /* assign it */
+ } /* process all td in this int chain */
+ } /* next interrupt chain */
+}
+
+/* usb interrupt service routine.
+ */
+void handle_usb_interrupt(void)
+{
+ unsigned short status;
+ static int error = 0;
+
+ /*
+ * Read the interrupt status, and write it back to clear the
+ * interrupt cause
+ */
+
+ status = in16r(usb_base_addr + USBSTS);
+
+ if (!status) /* shared interrupt, not mine */
+ return;
+ if (status != 1) {
+ /* remove host controller halted state */
+ if ((status & (USBSTS_HCPE | USBSTS_HCH)) ==
+ (USBSTS_HCPE | USBSTS_HCH)) {
+ /* Stop due to bug in driver, or hardware */
+ out16r(usb_base_addr + USBSTS, status);
+ out16r(usb_base_addr + USBCMD,
+ USBCMD_HCRESET | USBCMD_GRESET);
+ printf
+ ("GRUSB: HW detected error(s) in USB Descriptors (STS: 0x%x)\n",
+ status);
+ usb_show_td(8);
+ return;
+ } else if ((status & 0x20)
+ && ((in16r(usb_base_addr + USBCMD) & USBCMD_RS) ==
+ 0)) {
+ if (error < 10) {
+ out16r(usb_base_addr + USBCMD,
+ USBCMD_RS | in16r(usb_base_addr +
+ USBCMD));
+ error++;
+ }
+ } else
+ error = 0;
+ }
+ usb_check_int_chain(); /* call interrupt handlers for int tds */
+ usb_check_skel(); /* call completion handler for common transfer routines */
+ out16r(usb_base_addr + USBSTS, status);
+}
+
+/* init uhci
+ */
+int usb_lowlevel_init(void)
+{
+ unsigned char temp;
+ ambapp_ahbdev ahbdev;
+
+ /* Find GRUSB core using AMBA Plug&Play information */
+ if (ambapp_ahbslv_first(VENDOR_GAISLER, GAISLER_UHCI, &ahbdev) != 1) {
+ printf("USB UHCI: Failed to find GRUSB controller\n");
+ return -1;
+ }
+ usb_base_addr = ahbdev.address[0];
+ grusb_irq = ahbdev.irq;
+ /*
+ usb_base_addr = 0xfffa0000;
+ grusb_irq = 10;
+ */
+#ifdef USB_UHCI_DEBUG
+ grusb_show_regs();
+#endif
+ memset(td_int, 0, sizeof(td_int));
+ memset(tmp_td, 0, sizeof(tmp_td));
+ memset(tmp_int_td, 0, sizeof(tmp_int_td));
+ memset(&qh_cntrl, 0, sizeof(qh_cntrl));
+ memset(&qh_end, 0, sizeof(qh_end));
+ memset(&td_last, 0, sizeof(td_last));
+
+ irq_free_handler(grusb_irq);
+ USB_UHCI_PRINTF("GRUSB: at 0x%lx irq %d\n", usb_base_addr, grusb_irq);
+ rh.devnum = 0;
+ usb_init_skel();
+ reset_hc();
+ start_hc();
+ irq_install_handler(grusb_irq,
+ (interrupt_handler_t *) handle_usb_interrupt, NULL);
+ return 0;
+}
+
+/* stop uhci
+ */
+int usb_lowlevel_stop(void)
+{
+ if (grusb_irq == -1)
+ return 1;
+ irq_free_handler(grusb_irq);
+ reset_hc();
+ grusb_irq = -1;
+ return 0;
+}
+
+/*******************************************************************************************
+ * Virtual Root Hub
+ * Since the uhci does not have a real HUB, we simulate one ;-)
+ */
+#undef USB_RH_DEBUG
+
+#ifdef USB_RH_DEBUG
+#define USB_RH_PRINTF(fmt,args...) printf (fmt ,##args)
+static void usb_display_wValue(unsigned short wValue, unsigned short wIndex);
+static void usb_display_Req(unsigned short req);
+#else
+#define USB_RH_PRINTF(fmt,args...)
+static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
+{
+}
+static void usb_display_Req(unsigned short req)
+{
+}
+#endif
+
+static unsigned char root_hub_dev_des[] = {
+ 0x12, /* __u8 bLength; */
+ 0x01, /* __u8 bDescriptorType; Device */
+ 0x00, /* __u16 bcdUSB; v1.0 */
+ 0x01,
+ 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 bDeviceSubClass; */
+ 0x00, /* __u8 bDeviceProtocol; */
+ 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
+ 0x00, /* __u16 idVendor; */
+ 0x00,
+ 0x00, /* __u16 idProduct; */
+ 0x00,
+ 0x00, /* __u16 bcdDevice; */
+ 0x00,
+ 0x01, /* __u8 iManufacturer; */
+ 0x00, /* __u8 iProduct; */
+ 0x00, /* __u8 iSerialNumber; */
+ 0x01 /* __u8 bNumConfigurations; */
+};
+
+/* Configuration descriptor */
+static unsigned char root_hub_config_des[] = {
+ 0x09, /* __u8 bLength; */
+ 0x02, /* __u8 bDescriptorType; Configuration */
+ 0x19, /* __u16 wTotalLength; */
+ 0x00,
+ 0x01, /* __u8 bNumInterfaces; */
+ 0x01, /* __u8 bConfigurationValue; */
+ 0x00, /* __u8 iConfiguration; */
+ 0x40, /* __u8 bmAttributes;
+ Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
+ 0x00, /* __u8 MaxPower; */
+
+ /* interface */
+ 0x09, /* __u8 if_bLength; */
+ 0x04, /* __u8 if_bDescriptorType; Interface */
+ 0x00, /* __u8 if_bInterfaceNumber; */
+ 0x00, /* __u8 if_bAlternateSetting; */
+ 0x01, /* __u8 if_bNumEndpoints; */
+ 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
+ 0x00, /* __u8 if_bInterfaceSubClass; */
+ 0x00, /* __u8 if_bInterfaceProtocol; */
+ 0x00, /* __u8 if_iInterface; */
+
+ /* endpoint */
+ 0x07, /* __u8 ep_bLength; */
+ 0x05, /* __u8 ep_bDescriptorType; Endpoint */
+ 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
+ 0x03, /* __u8 ep_bmAttributes; Interrupt */
+ 0x08, /* __u16 ep_wMaxPacketSize; 8 Bytes */
+ 0x00,
+ 0xff /* __u8 ep_bInterval; 255 ms */
+};
+
+static unsigned char root_hub_hub_des[] = {
+ 0x09, /* __u8 bLength; */
+ 0x29, /* __u8 bDescriptorType; Hub-descriptor */
+ 0x02, /* __u8 bNbrPorts; */
+ 0x00, /* __u16 wHubCharacteristics; */
+ 0x00,
+ 0x01, /* __u8 bPwrOn2pwrGood; 2ms */
+ 0x00, /* __u8 bHubContrCurrent; 0 mA */
+ 0x00, /* __u8 DeviceRemovable; *** 7 Ports max *** */
+ 0xff /* __u8 PortPwrCtrlMask; *** 7 ports max *** */
+};
+
+static unsigned char root_hub_str_index0[] = {
+ 0x04, /* __u8 bLength; */
+ 0x03, /* __u8 bDescriptorType; String-descriptor */
+ 0x09, /* __u8 lang ID */
+ 0x04, /* __u8 lang ID */
+};
+
+static unsigned char root_hub_str_index1[] = {
+ 28, /* __u8 bLength; */
+ 0x03, /* __u8 bDescriptorType; String-descriptor */
+ 'U', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'H', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'C', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'I', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ ' ', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'R', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'o', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'o', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 't', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ ' ', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'H', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'u', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+ 'b', /* __u8 Unicode */
+ 0, /* __u8 Unicode */
+};
+
+/*
+ * Root Hub Control Pipe (interrupt Pipes are not supported)
+ */
+
+int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
+ int transfer_len, struct devrequest *cmd)
+{
+ void *data = buffer;
+ int leni = transfer_len;
+ int len = 0;
+ int status = 0;
+ int stat = 0;
+ int i;
+
+ unsigned short cstatus;
+
+ unsigned short bmRType_bReq;
+ unsigned short wValue;
+ unsigned short wIndex;
+ unsigned short wLength;
+
+ if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
+ printf("Root-Hub submit IRQ: NOT implemented\n");
+ return 0;
+ }
+ bmRType_bReq = cmd->requesttype | cmd->request << 8;
+ wValue = swap_16(cmd->value);
+ wIndex = swap_16(cmd->index);
+ wLength = swap_16(cmd->length);
+ usb_display_Req(bmRType_bReq);
+ for (i = 0; i < 8; i++)
+ rh.c_p_r[i] = 0;
+ USB_RH_PRINTF("Root-Hub: adr: %2x cmd(%1x): %02x%02x %04x %04x %04x\n",
+ dev->devnum, 8, cmd->requesttype, cmd->request, wValue,
+ wIndex, wLength);
+
+ switch (bmRType_bReq) {
+ /* Request Destination:
+ without flags: Device,
+ RH_INTERFACE: interface,
+ RH_ENDPOINT: endpoint,
+ RH_CLASS means HUB here,
+ RH_OTHER | RH_CLASS almost ever means HUB_PORT here
+ */
+
+ case RH_GET_STATUS:
+ *(unsigned short *)data = swap_16(1);
+ len = 2;
+ break;
+ case RH_GET_STATUS | RH_INTERFACE:
+ *(unsigned short *)data = swap_16(0);
+ len = 2;
+ break;
+ case RH_GET_STATUS | RH_ENDPOINT:
+ *(unsigned short *)data = swap_16(0);
+ len = 2;
+ break;
+ case RH_GET_STATUS | RH_CLASS:
+ *(unsigned long *)data = swap_32(0);
+ len = 4;
+ break; /* hub power ** */
+ case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+
+ status = in16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1));
+ cstatus = ((status & USBPORTSC_CSC) >> (1 - 0)) |
+ ((status & USBPORTSC_PEC) >> (3 - 1)) |
+ (rh.c_p_r[wIndex - 1] << (0 + 4));
+ status = (status & USBPORTSC_CCS) | ((status & USBPORTSC_PE) >> (2 - 1)) | ((status & USBPORTSC_SUSP) >> (12 - 2)) | ((status & USBPORTSC_PR) >> (9 - 4)) | (1 << 8) | /* power on ** */
+ ((status & USBPORTSC_LSDA) << (-8 + 9));
+
+ *(unsigned short *)data = swap_16(status);
+ *(unsigned short *)(data + 2) = swap_16(cstatus);
+ len = 4;
+ break;
+ case RH_CLEAR_FEATURE | RH_ENDPOINT:
+ switch (wValue) {
+ case (RH_ENDPOINT_STALL):
+ len = 0;
+ break;
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_CLASS:
+ switch (wValue) {
+ case (RH_C_HUB_OVER_CURRENT):
+ len = 0; /* hub power over current ** */
+ break;
+ }
+ break;
+
+ case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+ usb_display_wValue(wValue, wIndex);
+ switch (wValue) {
+ case (RH_PORT_ENABLE):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) & ~USBPORTSC_PE;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_SUSPEND):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) & ~USBPORTSC_SUSP;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_POWER):
+ len = 0; /* port power ** */
+ break;
+ case (RH_C_PORT_CONNECTION):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_CSC;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_C_PORT_ENABLE):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_PEC;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_C_PORT_SUSPEND):
+/*** WR_RH_PORTSTAT(RH_PS_PSSC); */
+ len = 0;
+ break;
+ case (RH_C_PORT_OVER_CURRENT):
+ len = 0;
+ break;
+ case (RH_C_PORT_RESET):
+ rh.c_p_r[wIndex - 1] = 0;
+ len = 0;
+ break;
+ }
+ break;
+ case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+ usb_display_wValue(wValue, wIndex);
+ switch (wValue) {
+ case (RH_PORT_SUSPEND):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_SUSP;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_RESET):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_PR;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ wait_ms(10);
+ status = (status & 0xfff5) & ~USBPORTSC_PR;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ udelay(10);
+ status = (status & 0xfff5) | USBPORTSC_PE;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ wait_ms(10);
+ status = (status & 0xfff5) | 0xa;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ case (RH_PORT_POWER):
+ len = 0; /* port power ** */
+ break;
+ case (RH_PORT_ENABLE):
+ status =
+ in16r(usb_base_addr + USBPORTSC1 +
+ 2 * (wIndex - 1));
+ status = (status & 0xfff5) | USBPORTSC_PE;
+ out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
+ status);
+ len = 0;
+ break;
+ }
+ break;
+
+ case RH_SET_ADDRESS:
+ rh.devnum = wValue;
+ len = 0;
+ break;
+ case RH_GET_DESCRIPTOR:
+ switch ((wValue & 0xff00) >> 8) {
+ case (0x01): /* device descriptor */
+ i = sizeof(root_hub_config_des);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_dev_des, len);
+ break;
+ case (0x02): /* configuration descriptor */
+ i = sizeof(root_hub_config_des);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_config_des, len);
+ break;
+ case (0x03): /*string descriptors */
+ if (wValue == 0x0300) {
+ i = sizeof(root_hub_str_index0);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_str_index0, len);
+ break;
+ }
+ if (wValue == 0x0301) {
+ i = sizeof(root_hub_str_index1);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_str_index1, len);
+ break;
+ }
+ stat = USB_ST_STALLED;
+ }
+ break;
+
+ case RH_GET_DESCRIPTOR | RH_CLASS:
+ root_hub_hub_des[2] = 2;
+ i = sizeof(root_hub_hub_des);
+ status = i > wLength ? wLength : i;
+ len = leni > status ? status : leni;
+ memcpy(data, root_hub_hub_des, len);
+ break;
+ case RH_GET_CONFIGURATION:
+ *(unsigned char *)data = 0x01;
+ len = 1;
+ break;
+ case RH_SET_CONFIGURATION:
+ len = 0;
+ break;
+ default:
+ stat = USB_ST_STALLED;
+ }
+ USB_RH_PRINTF("Root-Hub stat %lx port1: %x port2: %x\n\n", stat,
+ in16r(usb_base_addr + USBPORTSC1),
+ in16r(usb_base_addr + USBPORTSC2));
+ dev->act_len = len;
+ dev->status = stat;
+ return stat;
+
+}
+
+/********************************************************************************
+ * Some Debug Routines
+ */
+
+#ifdef USB_RH_DEBUG
+
+static void usb_display_Req(unsigned short req)
+{
+ USB_RH_PRINTF("- Root-Hub Request: ");
+ switch (req) {
+ case RH_GET_STATUS:
+ USB_RH_PRINTF("Get Status ");
+ break;
+ case RH_GET_STATUS | RH_INTERFACE:
+ USB_RH_PRINTF("Get Status Interface ");
+ break;
+ case RH_GET_STATUS | RH_ENDPOINT:
+ USB_RH_PRINTF("Get Status Endpoint ");
+ break;
+ case RH_GET_STATUS | RH_CLASS:
+ USB_RH_PRINTF("Get Status Class");
+ break; /* hub power ** */
+ case RH_GET_STATUS | RH_OTHER | RH_CLASS:
+ USB_RH_PRINTF("Get Status Class Others");
+ break;
+ case RH_CLEAR_FEATURE | RH_ENDPOINT:
+ USB_RH_PRINTF("Clear Feature Endpoint ");
+ break;
+ case RH_CLEAR_FEATURE | RH_CLASS:
+ USB_RH_PRINTF("Clear Feature Class ");
+ break;
+ case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
+ USB_RH_PRINTF("Clear Feature Other Class ");
+ break;
+ case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
+ USB_RH_PRINTF("Set Feature Other Class ");
+ break;
+ case RH_SET_ADDRESS:
+ USB_RH_PRINTF("Set Address ");
+ break;
+ case RH_GET_DESCRIPTOR:
+ USB_RH_PRINTF("Get Descriptor ");
+ break;
+ case RH_GET_DESCRIPTOR | RH_CLASS:
+ USB_RH_PRINTF("Get Descriptor Class ");
+ break;
+ case RH_GET_CONFIGURATION:
+ USB_RH_PRINTF("Get Configuration ");
+ break;
+ case RH_SET_CONFIGURATION:
+ USB_RH_PRINTF("Get Configuration ");
+ break;
+ default:
+ USB_RH_PRINTF("****UNKNOWN**** 0x%04X ", req);
+ }
+ USB_RH_PRINTF("\n");
+
+}
+
+static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
+{
+ switch (wValue) {
+ case (RH_PORT_ENABLE):
+ USB_RH_PRINTF("Root-Hub: Enable Port %d\n", wIndex);
+ break;
+ case (RH_PORT_SUSPEND):
+ USB_RH_PRINTF("Root-Hub: Suspend Port %d\n", wIndex);
+ break;
+ case (RH_PORT_POWER):
+ USB_RH_PRINTF("Root-Hub: Port Power %d\n", wIndex);
+ break;
+ case (RH_C_PORT_CONNECTION):
+ USB_RH_PRINTF("Root-Hub: C Port Connection Port %d\n", wIndex);
+ break;
+ case (RH_C_PORT_ENABLE):
+ USB_RH_PRINTF("Root-Hub: C Port Enable Port %d\n", wIndex);
+ break;
+ case (RH_C_PORT_SUSPEND):
+ USB_RH_PRINTF("Root-Hub: C Port Suspend Port %d\n", wIndex);
+ break;
+ case (RH_C_PORT_OVER_CURRENT):
+ USB_RH_PRINTF("Root-Hub: C Port Over Current Port %d\n",
+ wIndex);
+ break;
+ case (RH_C_PORT_RESET):
+ USB_RH_PRINTF("Root-Hub: C Port reset Port %d\n", wIndex);
+ break;
+ default:
+ USB_RH_PRINTF("Root-Hub: unknown %x %x\n", wValue, wIndex);
+ break;
+ }
+}
+
+#endif
+
+/*#ifdef USB_UHCI_DEBUG*/
+
+static int usb_display_td(uhci_td_t * td)
+{
+ unsigned long tmp;
+ int valid;
+
+ printf("TD at %p:\n", td);
+
+ tmp = swap_32(READ32(&td->link));
+ printf("Link points to 0x%08lX, %s first, %s, %s\n", tmp & 0xfffffff0,
+ ((tmp & 0x4) == 0x4) ? "Depth" : "Breath",
+ ((tmp & 0x2) == 0x2) ? "QH" : "TD",
+ ((tmp & 0x1) == 0x1) ? "invalid" : "valid");
+ valid = ((tmp & 0x1) == 0x0);
+ tmp = swap_32(READ32(&td->status));
+ printf
+ (" %s %ld Errors %s %s %s \n %s %s %s %s %s %s\n Len 0x%lX\n",
+ (((tmp >> 29) & 0x1) == 0x1) ? "SPD Enable" : "SPD Disable",
+ ((tmp >> 28) & 0x3),
+ (((tmp >> 26) & 0x1) == 0x1) ? "Low Speed" : "Full Speed",
+ (((tmp >> 25) & 0x1) == 0x1) ? "ISO " : "",
+ (((tmp >> 24) & 0x1) == 0x1) ? "IOC " : "",
+ (((tmp >> 23) & 0x1) == 0x1) ? "Active " : "Inactive ",
+ (((tmp >> 22) & 0x1) == 0x1) ? "Stalled" : "",
+ (((tmp >> 21) & 0x1) == 0x1) ? "Data Buffer Error" : "",
+ (((tmp >> 20) & 0x1) == 0x1) ? "Babble" : "",
+ (((tmp >> 19) & 0x1) == 0x1) ? "NAK" : "",
+ (((tmp >> 18) & 0x1) == 0x1) ? "Bitstuff Error" : "",
+ (tmp & 0x7ff));
+ tmp = swap_32(READ32(&td->info));
+ printf(" MaxLen 0x%lX\n", ((tmp >> 21) & 0x7FF));
+ printf(" %sEndpoint 0x%lX Dev Addr 0x%lX PID 0x%lX\n",
+ ((tmp >> 19) & 0x1) == 0x1 ? "TOGGLE " : "", ((tmp >> 15) & 0xF),
+ ((tmp >> 8) & 0x7F), tmp & 0xFF);
+ tmp = swap_32(READ32(&td->buffer));
+ printf(" Buffer 0x%08lX\n", tmp);
+ printf(" DEV %08lX\n", td->dev_ptr);
+ return valid;
+}
+
+void usb_show_td(int max)
+{
+ int i;
+ if (max > 0) {
+ for (i = 0; i < max; i++) {
+ usb_display_td(&tmp_td[i]);
+ }
+ } else {
+ i = 0;
+ do {
+ printf("tmp_td[%d]\n", i);
+ } while (usb_display_td(&tmp_td[i++]));
+ }
+}
+
+void grusb_show_regs(void)
+{
+ unsigned int tmp;
+
+ tmp = in16r(usb_base_addr + USBCMD);
+ printf(" USBCMD: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBSTS);
+ printf(" USBSTS: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBINTR);
+ printf(" USBINTR: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBFRNUM);
+ printf(" FRNUM: 0x%04x\n", tmp);
+ tmp = in32r(usb_base_addr + USBFLBASEADD);
+ printf(" FLBASEADD: 0x%08x\n", tmp);
+ tmp = in16r(usb_base_addr + USBSOF);
+ printf(" SOFMOD: 0x%04x\n", tmp);
+ tmp = in16r(usb_base_addr + USBPORTSC1);
+ printf(" PORTSC1: 0x%04x\n", tmp);
+}
+
+/*#endif*/
+#endif /* CONFIG_USB_UHCI */
+
+/* EOF */
diff --git a/cpu/leon3/usb_uhci.h b/cpu/leon3/usb_uhci.h
new file mode 100644
index 0000000..bf572a6
--- /dev/null
+++ b/cpu/leon3/usb_uhci.h
@@ -0,0 +1,184 @@
+/*
+ * (C) Copyright 2001
+ * Denis Peter, MPL AG Switzerland
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Note: Part of this code has been derived from linux
+ *
+ */
+#ifndef _USB_UHCI_H_
+#define _USB_UHCI_H_
+
+/* Command register */
+#define USBCMD 0
+#define USBCMD_RS 0x0001 /* Run/Stop */
+#define USBCMD_HCRESET 0x0002 /* Host reset */
+#define USBCMD_GRESET 0x0004 /* Global reset */
+#define USBCMD_EGSM 0x0008 /* Global Suspend Mode */
+#define USBCMD_FGR 0x0010 /* Force Global Resume */
+#define USBCMD_SWDBG 0x0020 /* SW Debug mode */
+#define USBCMD_CF 0x0040 /* Config Flag (sw only) */
+#define USBCMD_MAXP 0x0080 /* Max Packet (0 = 32, 1 = 64) */
+
+/* Status register */
+#define USBSTS 2
+#define USBSTS_USBINT 0x0001 /* Interrupt due to IOC */
+#define USBSTS_ERROR 0x0002 /* Interrupt due to error */
+#define USBSTS_RD 0x0004 /* Resume Detect */
+#define USBSTS_HSE 0x0008 /* Host System Error - basically PCI problems */
+#define USBSTS_HCPE 0x0010 /* Host Controller Process Error - the scripts were buggy */
+#define USBSTS_HCH 0x0020 /* HC Halted */
+
+/* Interrupt enable register */
+#define USBINTR 4
+#define USBINTR_TIMEOUT 0x0001 /* Timeout/CRC error enable */
+#define USBINTR_RESUME 0x0002 /* Resume interrupt enable */
+#define USBINTR_IOC 0x0004 /* Interrupt On Complete enable */
+#define USBINTR_SP 0x0008 /* Short packet interrupt enable */
+
+#define USBFRNUM 6
+#define USBFLBASEADD 8
+#define USBSOF 12
+
+/* USB port status and control registers */
+#define USBPORTSC1 16
+#define USBPORTSC2 18
+#define USBPORTSC_CCS 0x0001 /* Current Connect Status ("device present") */
+#define USBPORTSC_CSC 0x0002 /* Connect Status Change */
+#define USBPORTSC_PE 0x0004 /* Port Enable */
+#define USBPORTSC_PEC 0x0008 /* Port Enable Change */
+#define USBPORTSC_LS 0x0030 /* Line Status */
+#define USBPORTSC_RD 0x0040 /* Resume Detect */
+#define USBPORTSC_LSDA 0x0100 /* Low Speed Device Attached */
+#define USBPORTSC_PR 0x0200 /* Port Reset */
+#define USBPORTSC_SUSP 0x1000 /* Suspend */
+
+/* Legacy support register */
+#define USBLEGSUP 0xc0
+#define USBLEGSUP_DEFAULT 0x2000 /* only PIRQ enable set */
+
+#define UHCI_NULL_DATA_SIZE 0x7ff /* for UHCI controller TD */
+#define UHCI_PID 0xff /* PID MASK */
+
+#define UHCI_PTR_BITS 0x000F
+#define UHCI_PTR_TERM 0x0001
+#define UHCI_PTR_QH 0x0002
+#define UHCI_PTR_DEPTH 0x0004
+
+/* for TD <status>: */
+#define TD_CTRL_SPD (1 << 29) /* Short Packet Detect */
+#define TD_CTRL_C_ERR_MASK (3 << 27) /* Error Counter bits */
+#define TD_CTRL_LS (1 << 26) /* Low Speed Device */
+#define TD_CTRL_IOS (1 << 25) /* Isochronous Select */
+#define TD_CTRL_IOC (1 << 24) /* Interrupt on Complete */
+#define TD_CTRL_ACTIVE (1 << 23) /* TD Active */
+#define TD_CTRL_STALLED (1 << 22) /* TD Stalled */
+#define TD_CTRL_DBUFERR (1 << 21) /* Data Buffer Error */
+#define TD_CTRL_BABBLE (1 << 20) /* Babble Detected */
+#define TD_CTRL_NAK (1 << 19) /* NAK Received */
+#define TD_CTRL_CRCTIMEO (1 << 18) /* CRC/Time Out Error */
+#define TD_CTRL_BITSTUFF (1 << 17) /* Bit Stuff Error */
+#define TD_CTRL_ACTLEN_MASK 0x7ff /* actual length, encoded as n - 1 */
+
+#define TD_CTRL_ANY_ERROR (TD_CTRL_STALLED | TD_CTRL_DBUFERR | \
+ TD_CTRL_BABBLE | TD_CTRL_CRCTIME | TD_CTRL_BITSTUFF)
+
+#define TD_TOKEN_TOGGLE 19
+
+/* ------------------------------------------------------------------------------------
+ Virtual Root HUB
+ ------------------------------------------------------------------------------------ */
+/* destination of request */
+#define RH_INTERFACE 0x01
+#define RH_ENDPOINT 0x02
+#define RH_OTHER 0x03
+
+#define RH_CLASS 0x20
+#define RH_VENDOR 0x40
+
+/* Requests: bRequest << 8 | bmRequestType */
+#define RH_GET_STATUS 0x0080
+#define RH_CLEAR_FEATURE 0x0100
+#define RH_SET_FEATURE 0x0300
+#define RH_SET_ADDRESS 0x0500
+#define RH_GET_DESCRIPTOR 0x0680
+#define RH_SET_DESCRIPTOR 0x0700
+#define RH_GET_CONFIGURATION 0x0880
+#define RH_SET_CONFIGURATION 0x0900
+#define RH_GET_STATE 0x0280
+#define RH_GET_INTERFACE 0x0A80
+#define RH_SET_INTERFACE 0x0B00
+#define RH_SYNC_FRAME 0x0C80
+/* Our Vendor Specific Request */
+#define RH_SET_EP 0x2000
+
+/* Hub port features */
+#define RH_PORT_CONNECTION 0x00
+#define RH_PORT_ENABLE 0x01
+#define RH_PORT_SUSPEND 0x02
+#define RH_PORT_OVER_CURRENT 0x03
+#define RH_PORT_RESET 0x04
+#define RH_PORT_POWER 0x08
+#define RH_PORT_LOW_SPEED 0x09
+#define RH_C_PORT_CONNECTION 0x10
+#define RH_C_PORT_ENABLE 0x11
+#define RH_C_PORT_SUSPEND 0x12
+#define RH_C_PORT_OVER_CURRENT 0x13
+#define RH_C_PORT_RESET 0x14
+
+/* Hub features */
+#define RH_C_HUB_LOCAL_POWER 0x00
+#define RH_C_HUB_OVER_CURRENT 0x01
+
+#define RH_DEVICE_REMOTE_WAKEUP 0x00
+#define RH_ENDPOINT_STALL 0x01
+
+/* Our Vendor Specific feature */
+#define RH_REMOVE_EP 0x00
+
+#define RH_ACK 0x01
+#define RH_REQ_ERR -1
+#define RH_NACK 0x00
+
+/* Transfer descriptor structure */
+typedef struct {
+ unsigned long link; /* next td/qh (LE) */
+ unsigned long status; /* status of the td */
+ unsigned long info; /* Max Lenght / Endpoint / device address and PID */
+ unsigned long buffer; /* pointer to data buffer (LE) */
+ unsigned long dev_ptr; /* pointer to the assigned device (BE) */
+ unsigned long res[3]; /* reserved (TDs must be 8Byte aligned) */
+} uhci_td_t, *puhci_td_t;
+
+/* Queue Header structure */
+typedef struct {
+ unsigned long head; /* Next QH (LE) */
+ unsigned long element; /* Queue element pointer (LE) */
+ unsigned long res[5]; /* reserved */
+ unsigned long dev_ptr; /* if 0 no tds have been assigned to this qh */
+} uhci_qh_t, *puhci_qh_t;
+
+struct virt_root_hub {
+ int devnum; /* Address of Root Hub endpoint */
+ int numports; /* number of ports */
+ int c_p_r[8]; /* C_PORT_RESET */
+};
+
+#endif /* _USB_UHCI_H_ */
generated by cgit v1.1 at 2024-11-27 08:33:30 +0000