AT91CAP9 support : cpu/ files

Signed-off-by: Stelian Pop <stelian <at> popies.net>

7 files changed, 448 insertions, 0 deletions

diff --git a/cpu/arm926ejs/at91cap9/Makefile b/cpu/arm926ejs/at91cap9/Makefile
new file mode 100644
index 0000000..bf15e1e
--- /dev/null
+++ b/cpu/arm926ejs/at91cap9/Makefile
@@ -0,0 +1,46 @@
+#
+# (C) Copyright 2000-2008
+# Wolfgang Denk, DENX Software Engineering, wd <at> 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	= $(obj)lib$(SOC).a
+
+COBJS	= ether.o timer.o spi.o usb.o
+SOBJS	= lowlevel_init.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/cpu/arm926ejs/at91cap9/config.mk b/cpu/arm926ejs/at91cap9/config.mk
new file mode 100644
index 0000000..ca2cae1
--- /dev/null
+++ b/cpu/arm926ejs/at91cap9/config.mk
@@ -0,0 +1,2 @@
+PLATFORM_CPPFLAGS += -march=armv5te
+PLATFORM_CPPFLAGS += $(call cc-option,-mtune=arm926ejs,)
diff --git a/cpu/arm926ejs/at91cap9/ether.c b/cpu/arm926ejs/at91cap9/ether.c
new file mode 100644
index 0000000..b7958d5
--- /dev/null
+++ b/cpu/arm926ejs/at91cap9/ether.c
@@ -0,0 +1,35 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian.pop <at> leadtechdesign.com>
+ * Lead Tech Design <www.leadtechdesign.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/arch/AT91CAP9.h>
+
+extern int macb_eth_initialize(int id, void *regs, unsigned int phy_addr);
+
+#if defined(CONFIG_MACB) && defined(CONFIG_CMD_NET)
+void at91cap9_eth_initialize(bd_t *bi)
+{
+	macb_eth_initialize(0, (void *)AT91C_BASE_MACB, 0x00);
+}
+#endif
diff --git a/cpu/arm926ejs/at91cap9/lowlevel_init.S b/cpu/arm926ejs/at91cap9/lowlevel_init.S
new file mode 100644
index 0000000..24d950c
--- /dev/null
+++ b/cpu/arm926ejs/at91cap9/lowlevel_init.S
@@ -0,0 +1,43 @@
+/*
+ * AT91CAP9 setup stuff
+ *
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian.pop <at> leadtechdesign.com>
+ * Lead Tech Design <www.leadtechdesign.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 <version.h>
+
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+
+.globl lowlevel_init
+lowlevel_init:
+
+	/*
+	 * Clocks/SDRAM initialization is handled by at91bootstrap,
+	 * no need to do it here...
+	 */
+	mov	pc, lr
+
+	.ltorg
+
+#endif /* CONFIG_SKIP_LOWLEVEL_INIT */
diff --git a/cpu/arm926ejs/at91cap9/spi.c b/cpu/arm926ejs/at91cap9/spi.c
new file mode 100644
index 0000000..0953820
--- /dev/null
+++ b/cpu/arm926ejs/at91cap9/spi.c
@@ -0,0 +1,119 @@
+/*
+ * Driver for ATMEL DataFlash support
+ * Author : Hamid Ikdoumi (Atmel)
+ *
+ * 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 <common.h>
+#include <asm/hardware.h>
+
+#ifdef CONFIG_HAS_DATAFLASH
+#include <dataflash.h>
+
+/* Max Value = 10MHz to be compliant to the Continuous Array Read function */
+#define AT91C_SPI_CLK	10000000
+
+/* AC Characteristics: DLYBS = tCSS = 250ns min and DLYBCT = tCSH = 250ns */
+#define DATAFLASH_TCSS	(0xFA << 16)
+#define DATAFLASH_TCHS	(0x8 << 24)
+
+#define AT91C_TIMEOUT_WRDY		200000
+#define AT91C_SPI_PCS0_DATAFLASH_CARD	0xE	/* Chip Select 0: NPCS0%1110 */
+#define AT91C_SPI_PCS3_DATAFLASH_CARD	0x7	/* Chip Select 3: NPCS3%0111 */
+
+void AT91F_SpiInit(void)
+{
+	/* Reset the SPI */
+	AT91C_BASE_SPI0->SPI_CR = AT91C_SPI_SWRST;
+
+	/* Configure SPI in Master Mode with No CS selected !!! */
+	AT91C_BASE_SPI0->SPI_MR =
+		AT91C_SPI_MSTR | AT91C_SPI_MODFDIS | AT91C_SPI_PCS;
+
+	/* Configure CS0 */
+	AT91C_BASE_SPI0->SPI_CSR[0] =
+		AT91C_SPI_CPOL |
+		(AT91C_SPI_DLYBS & DATAFLASH_TCSS) |
+		(AT91C_SPI_DLYBCT & DATAFLASH_TCHS) |
+		((AT91C_MASTER_CLOCK / (2*AT91C_SPI_CLK)) << 8);
+}
+
+void AT91F_SpiEnable(int cs)
+{
+	switch (cs) {
+	case 0:	/* Configure SPI CS0 for Serial DataFlash AT45DBxx */
+		AT91C_BASE_SPI0->SPI_MR &= 0xFFF0FFFF;
+		AT91C_BASE_SPI0->SPI_MR |=
+			((AT91C_SPI_PCS0_DATAFLASH_CARD<<16) & AT91C_SPI_PCS);
+		break;
+	case 3:
+		AT91C_BASE_SPI0->SPI_MR &= 0xFFF0FFFF;
+		AT91C_BASE_SPI0->SPI_MR |=
+			((AT91C_SPI_PCS3_DATAFLASH_CARD<<16) & AT91C_SPI_PCS);
+		break;
+	}
+
+	/* SPI_Enable */
+	AT91C_BASE_SPI0->SPI_CR = AT91C_SPI_SPIEN;
+}
+
+unsigned int AT91F_SpiWrite(AT91PS_DataflashDesc pDesc)
+{
+	unsigned int timeout;
+
+	pDesc->state = BUSY;
+
+	AT91C_BASE_SPI0->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
+
+	/* Initialize the Transmit and Receive Pointer */
+	AT91C_BASE_SPI0->SPI_RPR = (unsigned int)pDesc->rx_cmd_pt;
+	AT91C_BASE_SPI0->SPI_TPR = (unsigned int)pDesc->tx_cmd_pt;
+
+	/* Intialize the Transmit and Receive Counters */
+	AT91C_BASE_SPI0->SPI_RCR = pDesc->rx_cmd_size;
+	AT91C_BASE_SPI0->SPI_TCR = pDesc->tx_cmd_size;
+
+	if (pDesc->tx_data_size != 0) {
+		/* Initialize the Next Transmit and Next Receive Pointer */
+		AT91C_BASE_SPI0->SPI_RNPR = (unsigned int)pDesc->rx_data_pt;
+		AT91C_BASE_SPI0->SPI_TNPR = (unsigned int)pDesc->tx_data_pt;
+
+		/* Intialize the Next Transmit and Next Receive Counters */
+		AT91C_BASE_SPI0->SPI_RNCR = pDesc->rx_data_size;
+		AT91C_BASE_SPI0->SPI_TNCR = pDesc->tx_data_size;
+	}
+
+	/* arm simple, non interrupt dependent timer */
+	reset_timer_masked();
+	timeout = 0;
+
+	AT91C_BASE_SPI0->SPI_PTCR = AT91C_PDC_TXTEN + AT91C_PDC_RXTEN;
+	while (!(AT91C_BASE_SPI0->SPI_SR & AT91C_SPI_RXBUFF) &&
+		((timeout = get_timer_masked()) < CFG_SPI_WRITE_TOUT));
+	AT91C_BASE_SPI0->SPI_PTCR = AT91C_PDC_TXTDIS + AT91C_PDC_RXTDIS;
+	pDesc->state = IDLE;
+
+	if (timeout >= CFG_SPI_WRITE_TOUT) {
+		printf("Error Timeout\n\r");
+		return DATAFLASH_ERROR;
+	}
+
+	return DATAFLASH_OK;
+}
+#endif
diff --git a/cpu/arm926ejs/at91cap9/timer.c b/cpu/arm926ejs/at91cap9/timer.c
new file mode 100644
index 0000000..4110e15
--- /dev/null
+++ b/cpu/arm926ejs/at91cap9/timer.c
@@ -0,0 +1,149 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian.pop <at> leadtechdesign.com>
+ * Lead Tech Design <www.leadtechdesign.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/arch/hardware.h>
+
+/*
+ * We're using the AT91CAP9 PITC in 32 bit mode, by
+ * setting the 20 bit counter period to its maximum (0xfffff).
+ */
+#define TIMER_LOAD_VAL	0xfffff
+#define READ_RESET_TIMER (AT91C_BASE_PITC->PITC_PIVR)
+#define READ_TIMER (AT91C_BASE_PITC->PITC_PIIR)
+#define TIMER_FREQ (AT91C_MASTER_CLOCK << 4)
+#define TICKS_TO_USEC(ticks) ((ticks) / 6)
+
+ulong get_timer_masked(void);
+ulong resettime;
+
+AT91PS_PITC p_pitc;
+
+/* nothing really to do with interrupts, just starts up a counter. */
+int interrupt_init(void)
+{
+	/*
+	 * Enable PITC Clock
+	 * The clock is already enabled for system controller in boot
+	 */
+	AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_SYS;
+
+	/* Enable PITC */
+	AT91C_BASE_PITC->PITC_PIMR = AT91C_PITC_PITEN;
+
+	/* Load PITC_PIMR with the right timer value */
+	AT91C_BASE_PITC->PITC_PIMR |= TIMER_LOAD_VAL;
+
+	reset_timer_masked();
+
+	return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+
+static inline ulong get_timer_raw(void)
+{
+	ulong now = READ_TIMER;
+	if (now >= resettime)
+		return now - resettime;
+	else
+		return 0xFFFFFFFFUL - (resettime - now) ;
+}
+
+void reset_timer_masked(void)
+{
+	resettime = READ_TIMER;
+}
+
+ulong get_timer_masked(void)
+{
+	return TICKS_TO_USEC(get_timer_raw());
+
+}
+
+void udelay_masked(unsigned long usec)
+{
+	ulong tmp;
+
+	tmp = get_timer(0);
+	while (get_timer(tmp) < usec)	/* our timer works in usecs */
+		; /* NOP */
+}
+
+void reset_timer(void)
+{
+	reset_timer_masked();
+}
+
+ulong get_timer(ulong base)
+{
+	ulong now = get_timer_masked();
+
+	if (now >= base)
+		return now - base;
+	else
+		return TICKS_TO_USEC(0xFFFFFFFFUL) - (base - now) ;
+}
+
+void udelay(unsigned long usec)
+{
+	udelay_masked(usec);
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+ulong get_tbclk(void)
+{
+	ulong tbclk;
+	tbclk = CFG_HZ;
+	return tbclk;
+}
+
+/*
+ * Reset the cpu by setting up the watchdog timer and let him time out
+ * on the AT91CAP9ADK board
+ */
+void reset_cpu(ulong ignored)
+{
+	/* this is the way Linux does it */
+	AT91C_BASE_RSTC->RSTC_RCR = (0xA5 << 24) |
+				    AT91C_RSTC_PROCRST |
+				    AT91C_RSTC_PERRST;
+
+	while (1);
+	/* Never reached */
+}
diff --git a/cpu/arm926ejs/at91cap9/usb.c b/cpu/arm926ejs/at91cap9/usb.c
new file mode 100644
index 0000000..69da5f3
--- /dev/null
+++ b/cpu/arm926ejs/at91cap9/usb.c
@@ -0,0 +1,54 @@
+/*
+ * (C) Copyright 2006
+ * DENX Software Engineering <mk <at> 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 <common.h>
+
+#if defined(CONFIG_USB_OHCI_NEW) && defined(CFG_USB_OHCI_CPU_INIT)
+#ifdef CONFIG_AT91CAP9
+
+#include <asm/arch/hardware.h>
+
+int usb_cpu_init(void)
+{
+	/* Enable USB host clock. */
+	AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_UHP;
+	AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_UHP;
+
+	return 0;
+}
+
+int usb_cpu_stop(void)
+{
+	/* Disable USB host clock. */
+	AT91C_BASE_PMC->PMC_PCDR = 1 << AT91C_ID_UHP;
+	AT91C_BASE_PMC->PMC_SCDR = AT91C_PMC_UHP;
+	return 0;
+}
+
+int usb_cpu_init_fail(void)
+{
+	return usb_cpu_stop();
+}
+
+#endif /* CONFIG_AT91CAP9 */
+#endif /* defined(CONFIG_USB_OHCI) && defined(CFG_USB_OHCI_CPU_INIT) */