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-rw-r--r--cpu/mcf5227x/Makefile2
-rw-r--r--cpu/mcf5227x/cpu_init.c20
-rw-r--r--cpu/mcf5227x/dspi.c261
-rw-r--r--cpu/mcf5227x/speed.c30
-rw-r--r--cpu/mcf5227x/start.S245
5 files changed, 541 insertions, 17 deletions
diff --git a/cpu/mcf5227x/Makefile b/cpu/mcf5227x/Makefile
index d0e9b45..44f9385 100644
--- a/cpu/mcf5227x/Makefile
+++ b/cpu/mcf5227x/Makefile
@@ -28,7 +28,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(CPU).a
START = start.o
-COBJS = cpu.o speed.o cpu_init.o interrupts.o
+COBJS = cpu.o speed.o cpu_init.o interrupts.o dspi.o
SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/cpu/mcf5227x/cpu_init.c b/cpu/mcf5227x/cpu_init.c
index 0f1dd1f..8945ef3 100644
--- a/cpu/mcf5227x/cpu_init.c
+++ b/cpu/mcf5227x/cpu_init.c
@@ -45,6 +45,7 @@ void cpu_init_f(void)
volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
volatile pll_t *pll = (volatile pll_t *)MMAP_PLL;
+#if !defined(CONFIG_CF_SBF)
/* Workaround, must place before fbcs */
pll->psr = 0x12;
@@ -58,37 +59,44 @@ void cpu_init_f(void)
scm1->pacrg = 0;
scm1->pacri = 0;
-#if (defined(CONFIG_SYS_CS0_BASE) && defined(CONFIG_SYS_CS0_MASK) && defined(CONFIG_SYS_CS0_CTRL))
+#if (defined(CONFIG_SYS_CS0_BASE) && defined(CONFIG_SYS_CS0_MASK) \
+ && defined(CONFIG_SYS_CS0_CTRL))
fbcs->csar0 = CONFIG_SYS_CS0_BASE;
fbcs->cscr0 = CONFIG_SYS_CS0_CTRL;
fbcs->csmr0 = CONFIG_SYS_CS0_MASK;
#endif
+#endif /* CONFIG_CF_SBF */
-#if (defined(CONFIG_SYS_CS1_BASE) && defined(CONFIG_SYS_CS1_MASK) && defined(CONFIG_SYS_CS1_CTRL))
+#if (defined(CONFIG_SYS_CS1_BASE) && defined(CONFIG_SYS_CS1_MASK) \
+ && defined(CONFIG_SYS_CS1_CTRL))
fbcs->csar1 = CONFIG_SYS_CS1_BASE;
fbcs->cscr1 = CONFIG_SYS_CS1_CTRL;
fbcs->csmr1 = CONFIG_SYS_CS1_MASK;
#endif
-#if (defined(CONFIG_SYS_CS2_BASE) && defined(CONFIG_SYS_CS2_MASK) && defined(CONFIG_SYS_CS2_CTRL))
+#if (defined(CONFIG_SYS_CS2_BASE) && defined(CONFIG_SYS_CS2_MASK) \
+ && defined(CONFIG_SYS_CS2_CTRL))
fbcs->csar2 = CONFIG_SYS_CS2_BASE;
fbcs->cscr2 = CONFIG_SYS_CS2_CTRL;
fbcs->csmr2 = CONFIG_SYS_CS2_MASK;
#endif
-#if (defined(CONFIG_SYS_CS3_BASE) && defined(CONFIG_SYS_CS3_MASK) && defined(CONFIG_SYS_CS3_CTRL))
+#if (defined(CONFIG_SYS_CS3_BASE) && defined(CONFIG_SYS_CS3_MASK) \
+ && defined(CONFIG_SYS_CS3_CTRL))
fbcs->csar3 = CONFIG_SYS_CS3_BASE;
fbcs->cscr3 = CONFIG_SYS_CS3_CTRL;
fbcs->csmr3 = CONFIG_SYS_CS3_MASK;
#endif
-#if (defined(CONFIG_SYS_CS4_BASE) && defined(CONFIG_SYS_CS4_MASK) && defined(CONFIG_SYS_CS4_CTRL))
+#if (defined(CONFIG_SYS_CS4_BASE) && defined(CONFIG_SYS_CS4_MASK) \
+ && defined(CONFIG_SYS_CS4_CTRL))
fbcs->csar4 = CONFIG_SYS_CS4_BASE;
fbcs->cscr4 = CONFIG_SYS_CS4_CTRL;
fbcs->csmr4 = CONFIG_SYS_CS4_MASK;
#endif
-#if (defined(CONFIG_SYS_CS5_BASE) && defined(CONFIG_SYS_CS5_MASK) && defined(CONFIG_SYS_CS5_CTRL))
+#if (defined(CONFIG_SYS_CS5_BASE) && defined(CONFIG_SYS_CS5_MASK) \
+ && defined(CONFIG_SYS_CS5_CTRL))
fbcs->csar5 = CONFIG_SYS_CS5_BASE;
fbcs->cscr5 = CONFIG_SYS_CS5_CTRL;
fbcs->csmr5 = CONFIG_SYS_CS5_MASK;
diff --git a/cpu/mcf5227x/dspi.c b/cpu/mcf5227x/dspi.c
new file mode 100644
index 0000000..7f48f91
--- /dev/null
+++ b/cpu/mcf5227x/dspi.c
@@ -0,0 +1,261 @@
+/*
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.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 <spi.h>
+#include <malloc.h>
+
+#if defined(CONFIG_CF_DSPI)
+#include <asm/immap.h>
+
+void dspi_init(void)
+{
+ volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+ volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
+
+ gpio->par_dspi =
+ GPIO_PAR_DSPI_SIN_SIN | GPIO_PAR_DSPI_SOUT_SOUT |
+ GPIO_PAR_DSPI_SCK_SCK;
+
+ dspi->dmcr = DSPI_DMCR_MSTR | DSPI_DMCR_CSIS7 | DSPI_DMCR_CSIS6 |
+ DSPI_DMCR_CSIS5 | DSPI_DMCR_CSIS4 | DSPI_DMCR_CSIS3 |
+ DSPI_DMCR_CSIS2 | DSPI_DMCR_CSIS1 | DSPI_DMCR_CSIS0 |
+ DSPI_DMCR_CRXF | DSPI_DMCR_CTXF;
+
+#ifdef CONFIG_SYS_DSPI_DCTAR0
+ dspi->dctar0 = CONFIG_SYS_DSPI_DCTAR0;
+#endif
+#ifdef CONFIG_SYS_DSPI_DCTAR1
+ dspi->dctar1 = CONFIG_SYS_DSPI_DCTAR1;
+#endif
+#ifdef CONFIG_SYS_DSPI_DCTAR2
+ dspi->dctar2 = CONFIG_SYS_DSPI_DCTAR2;
+#endif
+#ifdef CONFIG_SYS_DSPI_DCTAR3
+ dspi->dctar3 = CONFIG_SYS_DSPI_DCTAR3;
+#endif
+#ifdef CONFIG_SYS_DSPI_DCTAR4
+ dspi->dctar4 = CONFIG_SYS_DSPI_DCTAR4;
+#endif
+#ifdef CONFIG_SYS_DSPI_DCTAR5
+ dspi->dctar5 = CONFIG_SYS_DSPI_DCTAR5;
+#endif
+#ifdef CONFIG_SYS_DSPI_DCTAR6
+ dspi->dctar6 = CONFIG_SYS_DSPI_DCTAR6;
+#endif
+#ifdef CONFIG_SYS_DSPI_DCTAR7
+ dspi->dctar7 = CONFIG_SYS_DSPI_DCTAR7;
+#endif
+}
+
+void dspi_tx(int chipsel, u8 attrib, u16 data)
+{
+ volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
+
+ while ((dspi->dsr & 0x0000F000) >= 4) ;
+
+ dspi->dtfr = (attrib << 24) | ((1 << chipsel) << 16) | data;
+}
+
+u16 dspi_rx(void)
+{
+ volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
+
+ while ((dspi->dsr & 0x000000F0) == 0) ;
+
+ return (dspi->drfr & 0xFFFF);
+}
+
+#if defined(CONFIG_CMD_SPI)
+void spi_init_f(void)
+{
+}
+
+void spi_init_r(void)
+{
+}
+
+void spi_init(void)
+{
+ dspi_init();
+}
+
+struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
+ unsigned int max_hz, unsigned int mode)
+{
+ volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+ struct spi_slave *slave;
+
+ slave = malloc(sizeof(struct spi_slave));
+ if (!slave)
+ return NULL;
+
+ switch (cs) {
+ case 0:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0;
+ gpio->par_dspi |= GPIO_PAR_DSPI_PCS0_PCS0;
+ break;
+ case 2:
+ gpio->par_timer &= GPIO_PAR_TIMER_T2IN_MASK;
+ gpio->par_timer |= GPIO_PAR_TIMER_T2IN_DSPIPCS2;
+ break;
+ }
+
+ slave->bus = bus;
+ slave->cs = cs;
+
+ return slave;
+}
+
+void spi_free_slave(struct spi_slave *slave)
+{
+ volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+ switch (slave->cs) {
+ case 0:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0;
+ break;
+ case 2:
+ gpio->par_timer &= GPIO_PAR_TIMER_T2IN_MASK;
+ break;
+ }
+
+ free(slave);
+}
+
+int spi_claim_bus(struct spi_slave *slave)
+{
+ return 0;
+}
+
+void spi_release_bus(struct spi_slave *slave)
+{
+}
+
+int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
+ void *din, unsigned long flags)
+{
+ static int bWrite = 0;
+ u8 *spi_rd, *spi_wr;
+ int len = bitlen >> 3;
+
+ spi_rd = (u8 *) din;
+ spi_wr = (u8 *) dout;
+
+ /* command handling */
+ if (((len == 4) || (len == 1) || (len == 5)) && (dout != NULL)) {
+ switch (*spi_wr) {
+ case 0x02: /* Page Prog */
+ bWrite = 1;
+ dspi_tx(slave->cs, 0x80, spi_wr[0]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[1]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[2]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[3]);
+ dspi_rx();
+ return 0;
+ case 0x05: /* Read Status */
+ if (len == 4)
+ if ((spi_wr[1] == 0xFF) && (spi_wr[2] == 0xFF)
+ && (spi_wr[3] == 0xFF)) {
+ dspi_tx(slave->cs, 0x80, *spi_wr);
+ dspi_rx();
+ }
+ return 0;
+ case 0x06: /* WREN */
+ dspi_tx(slave->cs, 0x00, *spi_wr);
+ dspi_rx();
+ return 0;
+ case 0x0B: /* Fast read */
+ if ((len == 5) && (spi_wr[4] == 0)) {
+ dspi_tx(slave->cs, 0x80, spi_wr[0]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[1]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[2]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[3]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[4]);
+ dspi_rx();
+ }
+ return 0;
+ case 0x9F: /* RDID */
+ dspi_tx(slave->cs, 0x80, *spi_wr);
+ dspi_rx();
+ return 0;
+ case 0xD8: /* Sector erase */
+ if (len == 4)
+ if ((spi_wr[2] == 0) && (spi_wr[3] == 0)) {
+ dspi_tx(slave->cs, 0x80, spi_wr[0]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[1]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x80, spi_wr[2]);
+ dspi_rx();
+ dspi_tx(slave->cs, 0x00, spi_wr[3]);
+ dspi_rx();
+ }
+ return 0;
+ }
+ }
+
+ if (bWrite)
+ len--;
+
+ while (len--) {
+ if (dout != NULL) {
+ dspi_tx(slave->cs, 0x80, *spi_wr);
+ dspi_rx();
+ spi_wr++;
+ }
+
+ if (din != NULL) {
+ dspi_tx(slave->cs, 0x80, 0);
+ *spi_rd = dspi_rx();
+ spi_rd++;
+ }
+ }
+
+ if (flags == SPI_XFER_END) {
+ if (bWrite) {
+ dspi_tx(slave->cs, 0x00, *spi_wr);
+ dspi_rx();
+ bWrite = 0;
+ } else {
+ dspi_tx(slave->cs, 0x00, 0);
+ dspi_rx();
+ }
+ }
+
+ return 0;
+}
+#endif /* CONFIG_CMD_SPI */
+
+#endif /* CONFIG_CF_DSPI */
diff --git a/cpu/mcf5227x/speed.c b/cpu/mcf5227x/speed.c
index 74b9059..7e385d3 100644
--- a/cpu/mcf5227x/speed.c
+++ b/cpu/mcf5227x/speed.c
@@ -90,17 +90,33 @@ int get_clocks(void)
int vco, temp, pcrvalue, pfdr;
u8 bootmode;
- bootmode = (ccm->ccr & 0x000C) >> 2;
-
pcrvalue = pll->pcr & 0xFF0F0FFF;
pfdr = pcrvalue >> 24;
- if (pfdr != 0x1E) {
+ if (pfdr == 0x1E)
+ bootmode = 0; /* Normal Mode */
+
+#ifdef CONFIG_CF_SBF
+ bootmode = 3; /* Serial Mode */
+#endif
+
+ if (bootmode == 0) {
+ /* Normal mode */
+ vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
+ if ((vco < CLOCK_PLL_FVCO_MIN) || (vco > CLOCK_PLL_FVCO_MAX)) {
+ /* Default value */
+ pcrvalue = (pll->pcr & 0x00FFFFFF);
+ pcrvalue |= 0x1E << 24;
+ pll->pcr = pcrvalue;
+ vco =
+ ((pll->pcr & 0xFF000000) >> 24) *
+ CONFIG_SYS_INPUT_CLKSRC;
+ }
+ gd->vco_clk = vco; /* Vco clock */
+ } else if (bootmode == 3) {
/* serial mode */
- } else {
- /* Normal Mode */
- vco = pfdr * CONFIG_SYS_INPUT_CLKSRC;
- gd->vco_clk = vco;
+ vco = ((pll->pcr & 0xFF000000) >> 24) * CONFIG_SYS_INPUT_CLKSRC;
+ gd->vco_clk = vco; /* Vco clock */
}
if ((ccm->ccr & CCM_MISCCR_LIMP) == CCM_MISCCR_LIMP) {
diff --git a/cpu/mcf5227x/start.S b/cpu/mcf5227x/start.S
index becaab7..9387250 100644
--- a/cpu/mcf5227x/start.S
+++ b/cpu/mcf5227x/start.S
@@ -46,6 +46,11 @@
addl #60,%sp; /* space for 15 regs */ \
rte;
+#if defined(CONFIG_CF_SBF)
+#define ASM_DRAMINIT (asm_dram_init - TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
+#define ASM_SBF_IMG_HDR (asm_sbf_img_hdr - TEXT_BASE + CONFIG_SYS_INIT_RAM_ADDR)
+#endif
+
.text
/*
* Vector table. This is used for initial platform startup.
@@ -53,8 +58,14 @@
*/
_vectors:
-INITSP: .long 0x00000000 /* Initial SP */
-INITPC: .long _START /* Initial PC */
+#if defined(CONFIG_CF_SBF)
+INITSP: .long 0 /* Initial SP */
+INITPC: .long ASM_DRAMINIT /* Initial PC */
+#else
+INITSP: .long 0 /* Initial SP */
+INITPC: .long _START /* Initial PC */
+#endif
+
vector02: .long _FAULT /* Access Error */
vector03: .long _FAULT /* Address Error */
vector04: .long _FAULT /* Illegal Instruction */
@@ -83,6 +94,7 @@ vector1D: .long _FAULT /* Autovector Level 5 */
vector1E: .long _FAULT /* Autovector Level 6 */
vector1F: .long _FAULT /* Autovector Level 7 */
+#if !defined(CONFIG_CF_SBF)
/* TRAP #0 - #15 */
vector20_2F:
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
@@ -122,9 +134,231 @@ vector192_255:
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
.long _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT, _FAULT
+#endif
- .text
+#if defined(CONFIG_CF_SBF)
+ /* Image header: chksum 4 bytes, len 4 bytes, img dest 4 bytes */
+asm_sbf_img_hdr:
+ .long 0x00000000 /* checksum, not yet implemented */
+ .long 0x00020000 /* image length */
+ .long TEXT_BASE /* image to be relocated at */
+
+asm_dram_init:
+ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
+ movec %d0, %RAMBAR1 /* init Rambar */
+ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
+ clr.l %sp@-
+
+ /* Must disable global address */
+ move.l #0xFC008000, %a1
+ move.l #(CONFIG_SYS_CS0_BASE), (%a1)
+ move.l #0xFC008008, %a1
+ move.l #(CONFIG_SYS_CS0_CTRL), (%a1)
+ move.l #0xFC008004, %a1
+ move.l #(CONFIG_SYS_CS0_MASK), (%a1)
+
+ /*
+ * Dram Initialization
+ * a1, a2, and d0
+ */
+ /* mscr sdram */
+ move.l #0xFC0A4074, %a1
+ move.b #(CONFIG_SYS_SDRAM_DRV_STRENGTH), (%a1)
+ nop
+
+ /* SDRAM Chip 0 and 1 */
+ move.l #0xFC0B8110, %a1
+ move.l #0xFC0B8114, %a2
+
+ /* calculate the size */
+ move.l #0x13, %d1
+ move.l #(CONFIG_SYS_SDRAM_SIZE), %d2
+#ifdef CONFIG_SYS_SDRAM_BASE1
+ lsr.l #1, %d2
+#endif
+
+dramsz_loop:
+ lsr.l #1, %d2
+ add.l #1, %d1
+ cmp.l #1, %d2
+ bne dramsz_loop
+
+ /* SDRAM Chip 0 and 1 */
+ move.l #(CONFIG_SYS_SDRAM_BASE), (%a1)
+ or.l %d1, (%a1)
+#ifdef CONFIG_SYS_SDRAM_BASE1
+ move.l #(CONFIG_SYS_SDRAM_BASE1), (%a2)
+ or.l %d1, (%a2)
+#endif
+ nop
+
+ /* dram cfg1 and cfg2 */
+ move.l #0xFC0B8008, %a1
+ move.l #(CONFIG_SYS_SDRAM_CFG1), (%a1)
+ nop
+ move.l #0xFC0B800C, %a2
+ move.l #(CONFIG_SYS_SDRAM_CFG2), (%a2)
+ nop
+ move.l #0xFC0B8000, %a1 /* Mode */
+ move.l #0xFC0B8004, %a2 /* Ctrl */
+
+ /* Issue PALL */
+ move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
+ nop
+
+ /* Issue LEMR */
+ move.l #(CONFIG_SYS_SDRAM_MODE), (%a1)
+ nop
+ move.l #(CONFIG_SYS_SDRAM_EMOD), (%a1)
+ nop
+
+ move.l #1000, %d0
+wait1000:
+ nop
+ subq.l #1, %d0
+ bne wait1000
+
+ /* Issue PALL */
+ move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
+ nop
+
+ /* Perform two refresh cycles */
+ move.l #(CONFIG_SYS_SDRAM_CTRL + 4), %d0
+ nop
+ move.l %d0, (%a2)
+ move.l %d0, (%a2)
+ nop
+
+ move.l #(CONFIG_SYS_SDRAM_CTRL), %d0
+ and.l #0x7FFFFFFF, %d0
+ or.l #0x10000c00, %d0
+ move.l %d0, (%a2)
+ nop
+
+ /*
+ * DSPI Initialization
+ * a0 - general, sram - 0x80008000 - 32, see M52277EVB.h
+ * a1 - dspi status
+ * a2 - dtfr
+ * a3 - drfr
+ * a4 - Dst addr
+ */
+
+ /* Enable pins for DSPI mode - chip-selects are enabled later */
+ move.l #0xFC0A4036, %a0
+ move.b #0x3F, %d0
+ move.b %d0, (%a0)
+
+ /* DSPI CS */
+#ifdef CONFIG_SYS_DSPI_CS0
+ move.b (%a0), %d0
+ or.l #0xC0, %d0
+ move.b %d0, (%a0)
+#endif
+#ifdef CONFIG_SYS_DSPI_CS2
+ move.l #0xFC0A4037, %a0
+ move.b (%a0), %d0
+ or.l #0x10, %d0
+ move.b %d0, (%a0)
+#endif
+ nop
+
+ /* Configure DSPI module */
+ move.l #0xFC05C000, %a0
+ move.l #0x80FF0C00, (%a0) /* Master, clear TX/RX FIFO */
+
+ move.l #0xFC05C00C, %a0
+ move.l #0x3E000011, (%a0)
+
+ move.l #0xFC05C034, %a2 /* dtfr */
+ move.l #0xFC05C03B, %a3 /* drfr */
+
+ move.l #(ASM_SBF_IMG_HDR + 4), %a1
+ move.l (%a1)+, %d5
+ move.l (%a1), %a4
+
+ move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_SBFHDR_DATA_OFFSET), %a0
+ move.l #(CONFIG_SYS_SBFHDR_SIZE), %d4
+
+ move.l #0xFC05C02C, %a1 /* dspi status */
+
+ /* Issue commands and address */
+ move.l #0x8004000B, %d2 /* Fast Read Cmd */
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ move.l #0x80040000, %d2 /* Address byte 2 */
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ move.l #0x80040000, %d2 /* Address byte 1 */
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ move.l #0x80040000, %d2 /* Address byte 0 */
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ move.l #0x80040000, %d2 /* Dummy Wr and Rd */
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ /* Transfer serial boot header to sram */
+asm_dspi_rd_loop1:
+ move.l #0x80040000, %d2
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ move.b %d1, (%a0) /* read, copy to dst */
+
+ add.l #1, %a0 /* inc dst by 1 */
+ sub.l #1, %d4 /* dec cnt by 1 */
+ bne asm_dspi_rd_loop1
+
+ /* Transfer u-boot from serial flash to memory */
+asm_dspi_rd_loop2:
+ move.l #0x80040000, %d2
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ move.b %d1, (%a4) /* read, copy to dst */
+
+ add.l #1, %a4 /* inc dst by 1 */
+ sub.l #1, %d5 /* dec cnt by 1 */
+ bne asm_dspi_rd_loop2
+
+ move.l #0x00040000, %d2 /* Terminate */
+ jsr asm_dspi_wr_status
+ jsr asm_dspi_rd_status
+
+ /* jump to memory and execute */
+ move.l #(TEXT_BASE + 0x400), %a0
+ move.l %a0, (%a1)
+ jmp (%a0)
+
+asm_dspi_wr_status:
+ move.l (%a1), %d0 /* status */
+ and.l #0x0000F000, %d0
+ cmp.l #0x00003000, %d0
+ bgt asm_dspi_wr_status
+
+ move.l %d2, (%a2)
+ rts
+
+asm_dspi_rd_status:
+ move.l (%a1), %d0 /* status */
+ and.l #0x000000F0, %d0
+ lsr.l #4, %d0
+ cmp.l #0, %d0
+ beq asm_dspi_rd_status
+
+ move.b (%a3), %d1
+ rts
+#endif /* CONFIG_CF_SBF */
+
+ .text
+ . = 0x400
.globl _start
_start:
nop
@@ -132,11 +366,16 @@ _start:
move.w #0x2700,%sr /* Mask off Interrupt */
/* Set vector base register at the beginning of the Flash */
+#if defined(CONFIG_CF_SBF)
+ move.l #TEXT_BASE, %d0
+ movec %d0, %VBR
+#else
move.l #CONFIG_SYS_FLASH_BASE, %d0
movec %d0, %VBR
move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
movec %d0, %RAMBAR1
+#endif
/* initialize general use internal ram */
move.l #0, %d0
generated by cgit v1.1 at 2024-11-25 09:43:47 +0000