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-rw-r--r--cpu/mcf5445x/Makefile2
-rw-r--r--cpu/mcf5445x/cpu_init.c66
-rw-r--r--cpu/mcf5445x/dspi.c239
-rw-r--r--cpu/mcf5445x/start.S81
4 files changed, 119 insertions, 269 deletions
diff --git a/cpu/mcf5445x/Makefile b/cpu/mcf5445x/Makefile
index a549fdd..26ec298 100644
--- a/cpu/mcf5445x/Makefile
+++ b/cpu/mcf5445x/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 pci.o dspi.o
+COBJS = cpu.o speed.o cpu_init.o interrupts.o pci.o
SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
diff --git a/cpu/mcf5445x/cpu_init.c b/cpu/mcf5445x/cpu_init.c
index 7e04e32..48b37df 100644
--- a/cpu/mcf5445x/cpu_init.c
+++ b/cpu/mcf5445x/cpu_init.c
@@ -171,3 +171,69 @@ int fecpin_setclear(struct eth_device *dev, int setclear)
return 0;
}
#endif
+
+#ifdef CONFIG_CF_DSPI
+void cfspi_port_conf(void)
+{
+ volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+ gpio->par_dspi = GPIO_PAR_DSPI_SIN_SIN | GPIO_PAR_DSPI_SOUT_SOUT |
+ GPIO_PAR_DSPI_SCK_SCK;
+}
+
+int cfspi_claim_bus(uint bus, uint cs)
+{
+ volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
+ volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+ if ((dspi->sr & DSPI_SR_TXRXS) != DSPI_SR_TXRXS)
+ return -1;
+
+ /* Clear FIFO and resume transfer */
+ dspi->mcr &= ~(DSPI_MCR_CTXF | DSPI_MCR_CRXF);
+
+ switch (cs) {
+ case 0:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0;
+ gpio->par_dspi |= GPIO_PAR_DSPI_PCS0_PCS0;
+ break;
+ case 1:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS1_PCS1;
+ gpio->par_dspi |= GPIO_PAR_DSPI_PCS1_PCS1;
+ break;
+ case 2:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS2_PCS2;
+ gpio->par_dspi |= GPIO_PAR_DSPI_PCS2_PCS2;
+ break;
+ case 5:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS5_PCS5;
+ gpio->par_dspi |= GPIO_PAR_DSPI_PCS5_PCS5;
+ break;
+ }
+
+ return 0;
+}
+
+void cfspi_release_bus(uint bus, uint cs)
+{
+ volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
+ volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
+
+ dspi->mcr &= ~(DSPI_MCR_CTXF | DSPI_MCR_CRXF); /* Clear FIFO */
+
+ switch (cs) {
+ case 0:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS0_PCS0;
+ break;
+ case 1:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS1_PCS1;
+ break;
+ case 2:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS2_PCS2;
+ break;
+ case 5:
+ gpio->par_dspi &= ~GPIO_PAR_DSPI_PCS5_PCS5;
+ break;
+ }
+}
+#endif
diff --git a/cpu/mcf5445x/dspi.c b/cpu/mcf5445x/dspi.c
deleted file mode 100644
index 6d3ebab..0000000
--- a/cpu/mcf5445x/dspi.c
+++ /dev/null
@@ -1,239 +0,0 @@
-/*
- *
- * (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_PCS5_PCS5 | GPIO_PAR_DSPI_PCS2_PCS2 |
- GPIO_PAR_DSPI_PCS1_PCS1 | GPIO_PAR_DSPI_PCS0_PCS0 |
- 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)
-{
- struct spi_slave *slave;
-
- slave = malloc(sizeof(struct spi_slave));
- if (!slave)
- return NULL;
-
- slave->bus = bus;
- slave->cs = cs;
-
- return slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
- 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/mcf5445x/start.S b/cpu/mcf5445x/start.S
index 26fb2ce..c156bab 100644
--- a/cpu/mcf5445x/start.S
+++ b/cpu/mcf5445x/start.S
@@ -149,9 +149,35 @@ asm_sbf_img_hdr:
.long 0x00030000 /* image length */
.long TEXT_BASE /* image to be relocated at */
+
+
asm_dram_init:
+ move.w #0x2700,%sr /* Mask off Interrupt */
+
+ move.l #CONFIG_SYS_INIT_RAM_ADDR, %d0
+ movec %d0, %VBR
+
move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_RAM_CTRL), %d0
- movec %d0, %RAMBAR1 /* init Rambar */
+ movec %d0, %RAMBAR1
+
+ /* initialize general use internal ram */
+ move.l #0, %d0
+ move.l #(CACR_STATUS), %a1 /* CACR */
+ move.l #(ICACHE_STATUS), %a2 /* icache */
+ move.l #(DCACHE_STATUS), %a3 /* dcache */
+ move.l %d0, (%a1)
+ move.l %d0, (%a2)
+ move.l %d0, (%a3)
+
+ /* invalidate and disable cache */
+ move.l #0x01004100, %d0 /* Invalidate cache cmd */
+ movec %d0, %CACR /* Invalidate cache */
+ move.l #0, %d0
+ movec %d0, %ACR0
+ movec %d0, %ACR1
+ movec %d0, %ACR2
+ movec %d0, %ACR3
+
move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
clr.l %sp@-
@@ -163,10 +189,7 @@ asm_dram_init:
move.l #0xFC008004, %a1
move.l #(CONFIG_SYS_CS0_MASK), (%a1)
- /*
- * Dram Initialization
- * a1, a2, and d0
- */
+ /* Dram Initialization a1, a2, and d0 */
/* mscr sdram */
move.l #0xFC0A4074, %a1
move.b #(CONFIG_SYS_SDRAM_DRV_STRENGTH), (%a1)
@@ -209,24 +232,21 @@ dramsz_loop:
move.l #0xFC0B8000, %a1 /* Mode */
move.l #0xFC0B8004, %a2 /* Ctrl */
-#ifdef CONFIG_M54455EVB
/* Issue PALL */
move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
nop
+#ifdef CONFIG_M54455EVB
/* Issue LEMR */
move.l #(CONFIG_SYS_SDRAM_EMOD + 0x408), (%a1)
nop
move.l #(CONFIG_SYS_SDRAM_MODE + 0x300), (%a1)
nop
-
- move.l #1000, %d0
-wait1000:
- nop
- subq.l #1, %d0
- bne wait1000
#endif
+ move.l #1000, %d1
+ jsr asm_delay
+
/* Issue PALL */
move.l #(CONFIG_SYS_SDRAM_CTRL + 2), (%a2)
nop
@@ -246,25 +266,24 @@ wait1000:
move.l #(CONFIG_SYS_SDRAM_MODE), (%a1)
nop
move.l #(CONFIG_SYS_SDRAM_EMOD), (%a1)
- nop
#endif
- move.l #500, %d0
-wait500:
- nop
- subq.l #1, %d0
- bne wait500
+ move.l #500, %d1
+ jsr asm_delay
- move.l #(CONFIG_SYS_SDRAM_CTRL), %d0
- and.l #0x7FFFFFFF, %d0
+ move.l #(CONFIG_SYS_SDRAM_CTRL), %d1
+ and.l #0x7FFFFFFF, %d1
#ifdef CONFIG_M54455EVB
- or.l #0x10000c00, %d0
+ or.l #0x10000C00, %d1
#elif defined(CONFIG_M54451EVB)
- or.l #0x10000000, %d0
+ or.l #0x10000C00, %d1
#endif
- move.l %d0, (%a2)
+ move.l %d1, (%a2)
nop
+ move.l #2000, %d1
+ jsr asm_delay
+
/*
* DSPI Initialization
* a0 - general, sram - 0x80008000 - 32, see M54455EVB.h
@@ -274,6 +293,7 @@ wait500:
* a4 - Dst addr
*/
/* Enable pins for DSPI mode - chip-selects are enabled later */
+asm_dspi_init:
move.l #0xFC0A4063, %a0
move.b #0x7F, (%a0)
@@ -367,27 +387,29 @@ asm_dspi_rd_status:
move.b (%a3), %d1
rts
+
+asm_delay:
+ nop
+ subq.l #1, %d1
+ bne asm_delay
+ rts
#endif /* CONFIG_CF_SBF */
.text
. = 0x400
.globl _start
_start:
+#if !defined(CONFIG_CF_SBF)
nop
nop
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
@@ -411,6 +433,7 @@ _start:
the first c-code */
move.l #(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET), %sp
clr.l %sp@-
+#endif
move.l #__got_start, %a5 /* put relocation table address to a5 */
@@ -532,7 +555,7 @@ icache_enable:
move.l #0x00040100, %d0 /* Invalidate icache */
movec %d0, %CACR
- move.l #(CONFIG_SYS_SDRAM_BASE + 0x1c000), %d0 /* Setup icache */
+ move.l #(CONFIG_SYS_SDRAM_BASE + 0xC000), %d0 /* Setup icache */
movec %d0, %ACR2
move.l #0x04088020, %d0 /* Enable bcache and icache */
generated by cgit v1.1 at 2024-10-11 10:11:06 +0000