- Add MMC raw and FAT mode boot support for OMAP - Provide a means by which parameters passed by ROM-code can be saved in u-boot. - Save boot mode related information passed by OMAP4 ROM-code and use it to determine where to load the u-boot from - Assumes that the image has a mkimage header. Gets the payload size and load address from this header. If the header is not detected assume u-boot.bin as payload
Signed-off-by: Aneesh V aneesh@ti.com --- V3: * Squashed the patches that provided MMC support, FAT support, start.S hook for saving parameters, and OMAP4 patch for saving the parameters all into this patch. * Removed the assumption that payload is u-boot.bin. Payload size and address --- arch/arm/cpu/armv7/cpu.c | 7 + arch/arm/cpu/armv7/omap-common/spl.c | 194 +++++++++++++++++++++++++++++- arch/arm/cpu/armv7/omap4/board.c | 21 ++++ arch/arm/cpu/armv7/omap4/lowlevel_init.S | 31 +++++ arch/arm/cpu/armv7/start.S | 1 + arch/arm/include/asm/arch-omap4/omap4.h | 8 ++ arch/arm/include/asm/omap_common.h | 17 +++ include/configs/omap4_panda.h | 5 + include/configs/omap4_sdp4430.h | 5 + 9 files changed, 287 insertions(+), 2 deletions(-)
diff --git a/arch/arm/cpu/armv7/cpu.c b/arch/arm/cpu/armv7/cpu.c index def9ced..091e3e0 100644 --- a/arch/arm/cpu/armv7/cpu.c +++ b/arch/arm/cpu/armv7/cpu.c @@ -37,6 +37,13 @@ #include <asm/cache.h> #include <asm/armv7.h>
+void save_boot_params_default(u32 r0, u32 r1, u32 r2, u32 r3) +{ +} + +void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) + __attribute__((weak, alias("save_boot_params_default"))); + int cleanup_before_linux(void) { /* diff --git a/arch/arm/cpu/armv7/omap-common/spl.c b/arch/arm/cpu/armv7/omap-common/spl.c index 166d7eb..f326f9a 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_SYS_SPL_STACK, &gdata, CONFIG_SYS_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) diff --git a/arch/arm/cpu/armv7/omap4/board.c b/arch/arm/cpu/armv7/omap4/board.c index 54dd509..2e5739a 100644 --- a/arch/arm/cpu/armv7/omap4/board.c +++ b/arch/arm/cpu/armv7/omap4/board.c @@ -39,6 +39,27 @@ DECLARE_GLOBAL_DATA_PTR;
u32 *const omap4_revision = (u32 *)OMAP4_SRAM_SCRATCH_OMAP4_REV;
+#ifdef CONFIG_SPL_BUILD +/* + * We use static variables because global data is not ready yet. + * Initialized data is available in SPL right from the beginning. + * We would not typically need to save these parameters in regular + * U-Boot. This is needed only in SPL at the moment. + */ +u32 omap4_boot_device = BOOT_DEVICE_MMC1; +u32 omap4_boot_mode = MMCSD_MODE_FAT; + +u32 omap_boot_device(void) +{ + return omap4_boot_device; +} + +u32 omap_boot_mode(void) +{ + return omap4_boot_mode; +} +#endif + void do_set_mux(u32 base, struct pad_conf_entry const *array, int size) { int i; diff --git a/arch/arm/cpu/armv7/omap4/lowlevel_init.S b/arch/arm/cpu/armv7/omap4/lowlevel_init.S index 6abfbba..91525ec 100644 --- a/arch/arm/cpu/armv7/omap4/lowlevel_init.S +++ b/arch/arm/cpu/armv7/omap4/lowlevel_init.S @@ -27,6 +27,37 @@ */
#include <asm/arch/omap4.h> +#ifdef CONFIG_SPL_BUILD +.global save_boot_params +save_boot_params: + /* + * See if the rom code passed pointer is valid: + * It is not valid if it is not in non-secure SRAM + * This may happen if you are booting with the help of + * debugger + */ + ldr r2, =NON_SECURE_SRAM_START + cmp r2, r0 + bgt 1f + ldr r2, =NON_SECURE_SRAM_END + cmp r2, r0 + blt 1f + + /* Store the boot device in omap4_boot_device */ + ldr r2, [r0, #BOOT_DEVICE_OFFSET] @ r1 <- value of boot device + and r2, #BOOT_DEVICE_MASK + ldr r3, =omap4_boot_device + str r2, [r3] @ omap4_boot_device <- r1 + + /* Store the boot mode (raw/FAT) in omap4_boot_mode */ + ldr r2, [r0, #DEV_DESC_PTR_OFFSET] @ get the device descriptor ptr + ldr r2, [r2, #DEV_DATA_PTR_OFFSET] @ get the pDeviceData ptr + ldr r2, [r2, #BOOT_MODE_OFFSET] @ get the boot mode + ldr r3, =omap4_boot_mode + str r2, [r3] +1: + bx lr +#endif
.globl lowlevel_init lowlevel_init: diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S index 5be436f..89ea01f 100644 --- a/arch/arm/cpu/armv7/start.S +++ b/arch/arm/cpu/armv7/start.S @@ -134,6 +134,7 @@ IRQ_STACK_START_IN: */
reset: + bl save_boot_params /* * set the cpu to SVC32 mode */ diff --git a/arch/arm/include/asm/arch-omap4/omap4.h b/arch/arm/include/asm/arch-omap4/omap4.h index a8dbedb..563544f 100644 --- a/arch/arm/include/asm/arch-omap4/omap4.h +++ b/arch/arm/include/asm/arch-omap4/omap4.h @@ -144,4 +144,12 @@ struct s32ktimer { #define OMAP4430_ES2_2 0x44300220 #define OMAP4430_ES2_3 0x44300230
+/* ROM code defines */ +/* Boot device */ +#define BOOT_DEVICE_MASK 0xFF +#define BOOT_DEVICE_OFFSET 0x8 +#define DEV_DESC_PTR_OFFSET 0x4 +#define DEV_DATA_PTR_OFFSET 0x18 +#define BOOT_MODE_OFFSET 0x8 + #endif diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h index 69d53d2..d3cb857 100644 --- a/arch/arm/include/asm/omap_common.h +++ b/arch/arm/include/asm/omap_common.h @@ -36,4 +36,21 @@
void preloader_console_init(void);
+/* Boot device */ +#define BOOT_DEVICE_NONE 0 +#define BOOT_DEVICE_XIP 1 +#define BOOT_DEVICE_XIPWAIT 2 +#define BOOT_DEVICE_NAND 3 +#define BOOT_DEVICE_ONE_NAND 4 +#define BOOT_DEVICE_MMC1 5 +#define BOOT_DEVICE_MMC2 6 + +/* Boot type */ +#define MMCSD_MODE_UNDEFINED 0 +#define MMCSD_MODE_RAW 1 +#define MMCSD_MODE_FAT 2 + +u32 omap_boot_device(void); +u32 omap_boot_mode(void); + #endif /* _OMAP_COMMON_H_ */ diff --git a/include/configs/omap4_panda.h b/include/configs/omap4_panda.h index 3244fc1..310c353 100644 --- a/include/configs/omap4_panda.h +++ b/include/configs/omap4_panda.h @@ -252,6 +252,11 @@ #define CONFIG_SYS_SPL_BSS_START_ADDR 0x80000000 #define CONFIG_SYS_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x300 /* address 0x60000 */ +#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 0x200 /* 256 KB */ +#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 1 +#define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME "u-boot.img" + #define CONFIG_SPL_LIBCOMMON_SUPPORT #define CONFIG_SPL_LIBDISK_SUPPORT #define CONFIG_SPL_I2C_SUPPORT diff --git a/include/configs/omap4_sdp4430.h b/include/configs/omap4_sdp4430.h index 5c486c3..57ffb3c 100644 --- a/include/configs/omap4_sdp4430.h +++ b/include/configs/omap4_sdp4430.h @@ -258,6 +258,11 @@ #define CONFIG_SYS_SPL_BSS_START_ADDR 0x80000000 #define CONFIG_SYS_SPL_BSS_MAX_SIZE 0x80000 /* 512 KB */
+#define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR 0x300 /* address 0x60000 */ +#define CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS 0x200 /* 256 KB */ +#define CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION 1 +#define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME "u-boot.img" + #define CONFIG_SPL_LIBCOMMON_SUPPORT #define CONFIG_SPL_LIBDISK_SUPPORT #define CONFIG_SPL_I2C_SUPPORT