diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/spl.c')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/spl.c | 194 |
1 files changed, 192 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/spl.c b/arch/arm/cpu/armv7/omap-common/spl.c index b2015431e..d1776522b 100644 --- a/arch/arm/cpu/armv7/omap-common/spl.c +++ b/arch/arm/cpu/armv7/omap-common/spl.c @@ -24,15 +24,27 @@ */ #include <common.h> #include <asm/u-boot.h> +#include <asm/utils.h> #include <asm/arch/sys_proto.h> +#include <mmc.h> +#include <fat.h> #include <timestamp_autogenerated.h> #include <version_autogenerated.h> +#include <asm/omap_common.h> +#include <asm/arch/mmc_host_def.h> +#include <i2c.h> +#include <image.h> DECLARE_GLOBAL_DATA_PTR; /* Define global data structure pointer to it*/ static gd_t gdata __attribute__ ((section(".data"))); static bd_t bdata __attribute__ ((section(".data"))); +static const char *image_name; +static u8 image_os; +static u32 image_load_addr; +static u32 image_entry_point; +static u32 image_size; inline void hang(void) { @@ -53,10 +65,188 @@ void board_init_f(ulong dummy) relocate_code(CONFIG_SPL_STACK, &gdata, CONFIG_SPL_TEXT_BASE); } +#ifdef CONFIG_GENERIC_MMC +int board_mmc_init(bd_t *bis) +{ + switch (omap_boot_device()) { + case BOOT_DEVICE_MMC1: + omap_mmc_init(0); + break; + case BOOT_DEVICE_MMC2: + omap_mmc_init(1); + break; + } + return 0; +} +#endif + +static void parse_image_header(const struct image_header *header) +{ + u32 header_size = sizeof(struct image_header); + + if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) { + image_size = __be32_to_cpu(header->ih_size) + header_size; + image_entry_point = __be32_to_cpu(header->ih_load); + /* Load including the header */ + image_load_addr = image_entry_point - header_size; + image_os = header->ih_os; + image_name = (const char *)&header->ih_name; + debug("spl: payload image: %s load addr: 0x%x size: %d\n", + image_name, image_load_addr, image_size); + } else { + /* Signature not found - assume u-boot.bin */ + printf("mkimage signature not found - ih_magic = %x\n", + header->ih_magic); + puts("Assuming u-boot.bin ..\n"); + /* Let's assume U-Boot will not be more than 200 KB */ + image_size = 200 * 1024; + image_entry_point = CONFIG_SYS_TEXT_BASE; + image_load_addr = CONFIG_SYS_TEXT_BASE; + image_os = IH_OS_U_BOOT; + image_name = "U-Boot"; + } +} + +static void mmc_load_image_raw(struct mmc *mmc) +{ + u32 image_size_sectors, err; + const struct image_header *header; + + header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - + sizeof(struct image_header)); + + /* read image header to find the image size & load address */ + err = mmc->block_dev.block_read(0, + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, 1, + (void *)header); + + if (err <= 0) + goto end; + + parse_image_header(header); + + /* convert size to sectors - round up */ + image_size_sectors = (image_size + MMCSD_SECTOR_SIZE - 1) / + MMCSD_SECTOR_SIZE; + + /* Read the header too to avoid extra memcpy */ + err = mmc->block_dev.block_read(0, + CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, + image_size_sectors, (void *)image_load_addr); + +end: + if (err <= 0) { + printf("spl: mmc blk read err - %d\n", err); + hang(); + } +} + +static void mmc_load_image_fat(struct mmc *mmc) +{ + s32 err; + struct image_header *header; + + header = (struct image_header *)(CONFIG_SYS_TEXT_BASE - + sizeof(struct image_header)); + + err = fat_register_device(&mmc->block_dev, + CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION); + if (err) { + printf("spl: fat register err - %d\n", err); + hang(); + } + + err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, + (u8 *)header, sizeof(struct image_header)); + if (err <= 0) + goto end; + + parse_image_header(header); + + err = file_fat_read(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, + (u8 *)image_load_addr, 0); + +end: + if (err <= 0) { + printf("spl: error reading image %s, err - %d\n", + CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME, err); + hang(); + } +} + +static void mmc_load_image(void) +{ + struct mmc *mmc; + int err; + u32 boot_mode; + + mmc_initialize(gd->bd); + /* We register only one device. So, the dev id is always 0 */ + mmc = find_mmc_device(0); + if (!mmc) { + puts("spl: mmc device not found!!\n"); + hang(); + } + + err = mmc_init(mmc); + if (err) { + printf("spl: mmc init failed: err - %d\n", err); + hang(); + } + + boot_mode = omap_boot_mode(); + if (boot_mode == MMCSD_MODE_RAW) { + debug("boot mode - RAW\n"); + mmc_load_image_raw(mmc); + } else if (boot_mode == MMCSD_MODE_FAT) { + debug("boot mode - FAT\n"); + mmc_load_image_fat(mmc); + } else { + puts("spl: wrong MMC boot mode\n"); + hang(); + } +} + +void jump_to_image_no_args(void) +{ + typedef void (*image_entry_noargs_t)(void)__attribute__ ((noreturn)); + image_entry_noargs_t image_entry = + (image_entry_noargs_t) image_entry_point; + + image_entry(); +} + +void jump_to_image_no_args(void) __attribute__ ((noreturn)); void board_init_r(gd_t *id, ulong dummy) { - for (;;) - ; + u32 boot_device; + debug(">>spl:board_init_r()\n"); + + timer_init(); + i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); + + boot_device = omap_boot_device(); + debug("boot device - %d\n", boot_device); + switch (boot_device) { + case BOOT_DEVICE_MMC1: + case BOOT_DEVICE_MMC2: + mmc_load_image(); + break; + default: + printf("SPL: Un-supported Boot Device - %d!!!\n", boot_device); + hang(); + break; + } + + switch (image_os) { + case IH_OS_U_BOOT: + debug("Jumping to U-Boot\n"); + jump_to_image_no_args(); + break; + default: + puts("Unsupported OS image.. Jumping nevertheless..\n"); + jump_to_image_no_args(); + } } void preloader_console_init(void) |