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