[U-Boot] [PATCH 08/10 v5] powerpc/p1022ds: boot from spi flash with SPL

ying.zhang at freescale.com
2013-06-20T08:04:26Z

From: Ying Zhang <b40530@freescale.com>

Support to boot from spi flash.

This patch is on top of the patch:
powerpc/p1022ds: boot from SD Card with SPL

Signed-off-by: Ying Zhang <b40530@freescale.com>
---
Compared with the original version, Changed as below:
1. Split from "boot from SD card/SPI flash with SPL".
2. No change.
3. No change.
4. No change.

board/freescale/p1022ds/spl.c | 12 +++++-
drivers/mtd/spi/Makefile | 1 +
drivers/mtd/spi/fsl_espi_spl.c | 78 ++++++++++++++++++++++++++++++++++++++++
drivers/mtd/spi/spi_flash.c | 2 +
include/configs/P1022DS.h | 36 +++++++++++++++----
5 files changed, 120 insertions(+), 9 deletions(-)
create mode 100644 drivers/mtd/spi/fsl_espi_spl.c

diff --git a/board/freescale/p1022ds/spl.c b/board/freescale/p1022ds/spl.c
index 40f000f..1dd9050 100644
--- a/board/freescale/p1022ds/spl.c
+++ b/board/freescale/p1022ds/spl.c
@@ -21,13 +21,12 @@

#include <common.h>
#include <ns16550.h>
-#include <asm/fsl_law.h>
-#include <asm/fsl_ddr_sdram.h>
#include <malloc.h>
#include <mmc.h>
#include <i2c.h>
#include "../common/ngpixis.h"
#include <fsl_esdhc.h>
+#include <spi_flash.h>

DECLARE_GLOBAL_DATA_PTR;

@@ -54,6 +53,11 @@ void board_init_f(ulong bootflag)
setbits_be32(&gur->pmuxcr,
in_be32(&gur->pmuxcr) | MPC85xx_PMUXCR_SD_DATA);

+#ifdef CONFIG_SPL_SPI_BOOT
+ /* Enable the SPI */
+ clrsetbits_8(&pixis->brdcfg0, PIXIS_ELBC_SPI_MASK, PIXIS_SPI);
+#endif
+
/* Read back the register to synchronize the write. */
in_be32(&gur->pmuxcr);

@@ -67,6 +71,8 @@ void board_init_f(ulong bootflag)
bus_clk / 16 / CONFIG_BAUDRATE);
#ifdef CONFIG_SPL_MMC_BOOT
puts("\nSD boot...\n");
+#elif defined(CONFIG_SPL_SPI_BOOT)
+ puts("\nSPI Flash boot...\n");
#endif

/* copy code to RAM and jump to it - this should not return */
@@ -108,5 +114,7 @@ void board_init_r(gd_t *gd, ulong dest_addr)

#ifdef CONFIG_SPL_MMC_BOOT
mmc_boot();
+#elif defined(CONFIG_SPL_SPI_BOOT)
+ spi_boot();
#endif
}
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile
index 90f8392..5f130d5 100644
--- a/drivers/mtd/spi/Makefile
+++ b/drivers/mtd/spi/Makefile
@@ -27,6 +27,7 @@ LIB := $(obj)libspi_flash.o

ifdef CONFIG_SPL_BUILD
COBJS-$(CONFIG_SPL_SPI_LOAD) += spi_spl_load.o
+COBJS-$(CONFIG_SPL_SPI_BOOT) += fsl_espi_spl.o
endif

COBJS-$(CONFIG_SPI_FLASH) += spi_flash.o
diff --git a/drivers/mtd/spi/fsl_espi_spl.c b/drivers/mtd/spi/fsl_espi_spl.c
new file mode 100644
index 0000000..8375a75
--- /dev/null
+++ b/drivers/mtd/spi/fsl_espi_spl.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * 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_flash.h>
+#include <malloc.h>
+
+#define ESPI_BOOT_IMAGE_SIZE 0x48
+#define ESPI_BOOT_IMAGE_ADDR 0x50
+#define CONFIG_CFG_DATA_SECTOR 0
+
+/*
+ * The main entry for SPI booting. It's necessary that SDRAM is already
+ * configured and available since this code loads the main U-Boot image
+ * from SPI into SDRAM and starts it from there.
+ */
+void spi_boot(void)
+{
+ void (*uboot)(void) __noreturn;
+ u32 offset, code_len, i;
+ unsigned char *buf = NULL;
+ struct spi_flash *flash;
+
+ flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS,
+ CONFIG_ENV_SPI_MAX_HZ, CONFIG_ENV_SPI_MODE);
+ if (flash == NULL) {
+ puts("\nspi_flash_probe failed");
+ hang();
+ }
+
+ /*
+ * Load U-Boot image from SPI flash into RAM
+ */
+ buf = malloc(flash->page_size);
+ if (buf == NULL) {
+ puts("\nmalloc failed");
+ hang();
+ }
+ memset(buf, 0, flash->page_size);
+
+ spi_flash_read(flash, CONFIG_CFG_DATA_SECTOR, \
+ flash->page_size, (void *)buf);
+ offset = *(u32 *)(buf + ESPI_BOOT_IMAGE_ADDR);
+ /* Skip spl code */
+ offset += CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS;
+ /* Get the code size from offset 0x48 */
+ code_len = *(u32 *)(buf + ESPI_BOOT_IMAGE_SIZE);
+ /* Skip spl code */
+ code_len = code_len - CONFIG_SPL_MAX_SIZE;
+ /* copy code to DDR */
+ spi_flash_read(flash, offset, code_len, \
+ (void *)CONFIG_SYS_SPI_FLASH_U_BOOT_DST);
+ /*
+ * Jump to U-Boot image
+ */
+ flush_cache(CONFIG_SYS_SPI_FLASH_U_BOOT_DST, \
+ code_len);
+ uboot = (void *) CONFIG_SYS_SPI_FLASH_U_BOOT_START;
+ (*uboot)();
+}
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 0e38f59..3ffe89f 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -428,12 +428,14 @@ struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
goto err_manufacturer_probe;
}
#endif
+#ifndef CONFIG_SPL_BUILD
printf("SF: Detected %s with page size ", flash->name);
print_size(flash->sector_size, ", total ");
print_size(flash->size, "");
if (flash->memory_map)
printf(", mapped at %p", flash->memory_map);
puts("\n");
+#endif

spi_release_bus(spi);

diff --git a/include/configs/P1022DS.h b/include/configs/P1022DS.h
index bfeaf6a..467c838 100644
--- a/include/configs/P1022DS.h
+++ b/include/configs/P1022DS.h
@@ -48,11 +48,33 @@
#endif

#ifdef CONFIG_SPIFLASH
-#define CONFIG_RAMBOOT_SPIFLASH
-#define CONFIG_SYS_RAMBOOT
-#define CONFIG_SYS_EXTRA_ENV_RELOC
-#define CONFIG_SYS_TEXT_BASE 0x11000000
-#define CONFIG_RESET_VECTOR_ADDRESS 0x1107fffc
+#define CONFIG_SPL
+#define CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
+#define CONFIG_SPL_ENV_SUPPORT
+#define CONFIG_SPL_SERIAL_SUPPORT
+#define CONFIG_SPL_SPI_SUPPORT
+#define CONFIG_SPL_SPI_FLASH_SUPPORT
+#define CONFIG_SPL_SPI_FLASH_MINIMAL
+#define CONFIG_SPL_FLUSH_IMAGE
+#define CONFIG_SPL_TARGET "u-boot-with-spl.bin"
+#define CONFIG_SPL_LIBGENERIC_SUPPORT
+#define CONFIG_SPL_LIBCOMMON_SUPPORT
+#define CONFIG_SPL_I2C_SUPPORT
+#define CONFIG_FSL_LAW /* Use common FSL init code */
+#define CONFIG_SYS_TEXT_BASE 0x11001000
+#define CONFIG_SPL_TEXT_BASE 0xf8f81000
+#define CONFIG_SPL_PAD_TO 0x18000
+#define CONFIG_SPL_MAX_SIZE (96 * 1024)
+#define CONFIG_SYS_SPI_FLASH_U_BOOT_SIZE (512 << 10)
+#define CONFIG_SYS_SPI_FLASH_U_BOOT_DST (0x11000000)
+#define CONFIG_SYS_SPI_FLASH_U_BOOT_START (0x11000000)
+#define CONFIG_SYS_SPI_FLASH_U_BOOT_OFFS (96 << 10)
+#define CONFIG_SYS_MPC85XX_NO_RESETVEC
+#define CONFIG_SYS_LDSCRIPT "arch/powerpc/cpu/mpc85xx/u-boot.lds"
+#define CONFIG_SPL_SPI_BOOT
+#ifdef CONFIG_SPL_BUILD
+#define CONFIG_SPL_COMMON_INIT_DDR
+#endif
#endif

#define CONFIG_NAND_FSL_ELBC
@@ -318,7 +340,7 @@
* Config the L2 Cache as L2 SRAM
*/
#if defined(CONFIG_SPL_BUILD)
-#if defined(CONFIG_SDCARD)
+#if defined(CONFIG_SDCARD) || defined(CONFIG_SPIFLASH)
#define CONFIG_SYS_INIT_L2_ADDR 0xf8f80000
#define CONFIG_SYS_INIT_L2_ADDR_PHYS CONFIG_SYS_INIT_L2_ADDR
#define CONFIG_SYS_L2_SIZE (256 << 10)
@@ -563,7 +585,7 @@
/*
* Environment
*/
-#ifdef CONFIG_RAMBOOT_SPIFLASH
+#ifdef CONFIG_SPIFLASH
#define CONFIG_ENV_IS_IN_SPI_FLASH
#define CONFIG_ENV_SPI_BUS 0
#define CONFIG_ENV_SPI_CS 0
--
1.7.0.4