diff options
Diffstat (limited to 'roms/u-boot/cmd/mvebu/bubt.c')
| -rw-r--r-- | roms/u-boot/cmd/mvebu/bubt.c | 885 |
1 files changed, 885 insertions, 0 deletions
diff --git a/roms/u-boot/cmd/mvebu/bubt.c b/roms/u-boot/cmd/mvebu/bubt.c new file mode 100644 index 000000000..5cd520e46 --- /dev/null +++ b/roms/u-boot/cmd/mvebu/bubt.c @@ -0,0 +1,885 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2016 Marvell International Ltd. + * https://spdx.org/licenses + */ + +#include <config.h> +#include <common.h> +#include <command.h> +#include <env.h> +#include <flash.h> +#include <image.h> +#include <net.h> +#include <vsprintf.h> +#include <errno.h> +#include <dm.h> + +#include <spi_flash.h> +#include <spi.h> +#include <nand.h> +#include <usb.h> +#include <fs.h> +#include <mmc.h> +#ifdef CONFIG_BLK +#include <blk.h> +#endif +#include <u-boot/sha1.h> +#include <u-boot/sha256.h> + +#if defined(CONFIG_ARMADA_8K) +#define MAIN_HDR_MAGIC 0xB105B002 + +struct mvebu_image_header { + u32 magic; /* 0-3 */ + u32 prolog_size; /* 4-7 */ + u32 prolog_checksum; /* 8-11 */ + u32 boot_image_size; /* 12-15 */ + u32 boot_image_checksum; /* 16-19 */ + u32 rsrvd0; /* 20-23 */ + u32 load_addr; /* 24-27 */ + u32 exec_addr; /* 28-31 */ + u8 uart_cfg; /* 32 */ + u8 baudrate; /* 33 */ + u8 ext_count; /* 34 */ + u8 aux_flags; /* 35 */ + u32 io_arg_0; /* 36-39 */ + u32 io_arg_1; /* 40-43 */ + u32 io_arg_2; /* 43-47 */ + u32 io_arg_3; /* 48-51 */ + u32 rsrvd1; /* 52-55 */ + u32 rsrvd2; /* 56-59 */ + u32 rsrvd3; /* 60-63 */ +}; +#elif defined(CONFIG_ARMADA_3700) /* A3700 */ +#define HASH_SUM_LEN 16 +#define IMAGE_VERSION_3_6_0 0x030600 +#define IMAGE_VERSION_3_5_0 0x030500 + +struct common_tim_data { + u32 version; + u32 identifier; + u32 trusted; + u32 issue_date; + u32 oem_unique_id; + u32 reserved[5]; /* Reserve 20 bytes */ + u32 boot_flash_sign; + u32 num_images; + u32 num_keys; + u32 size_of_reserved; +}; + +struct mvebu_image_info { + u32 image_id; + u32 next_image_id; + u32 flash_entry_addr; + u32 load_addr; + u32 image_size; + u32 image_size_to_hash; + u32 hash_algorithm_id; + u32 hash[HASH_SUM_LEN]; /* Reserve 512 bits for the hash */ + u32 partition_number; + u32 enc_algorithm_id; + u32 encrypt_start_offset; + u32 encrypt_size; +}; +#endif + +/* Structure of the main header, version 1 (Armada 370/38x/XP) */ +struct a38x_main_hdr_v1 { + u8 blockid; /* 0x0 */ + u8 flags; /* 0x1 */ + u16 reserved2; /* 0x2-0x3 */ + u32 blocksize; /* 0x4-0x7 */ + u8 version; /* 0x8 */ + u8 headersz_msb; /* 0x9 */ + u16 headersz_lsb; /* 0xA-0xB */ + u32 srcaddr; /* 0xC-0xF */ + u32 destaddr; /* 0x10-0x13 */ + u32 execaddr; /* 0x14-0x17 */ + u8 options; /* 0x18 */ + u8 nandblocksize; /* 0x19 */ + u8 nandbadblklocation; /* 0x1A */ + u8 reserved4; /* 0x1B */ + u16 reserved5; /* 0x1C-0x1D */ + u8 ext; /* 0x1E */ + u8 checksum; /* 0x1F */ +}; + +struct a38x_boot_mode { + unsigned int id; + const char *name; +}; + +/* The blockid header field values used to indicate boot device of image */ +struct a38x_boot_mode a38x_boot_modes[] = { + { 0x4D, "i2c" }, + { 0x5A, "spi" }, + { 0x69, "uart" }, + { 0x78, "sata" }, + { 0x8B, "nand" }, + { 0x9C, "pex" }, + { 0xAE, "mmc" }, + {}, +}; + +struct bubt_dev { + char name[8]; + size_t (*read)(const char *file_name); + int (*write)(size_t image_size); + int (*active)(void); +}; + +static ulong get_load_addr(void) +{ + const char *addr_str; + unsigned long addr; + + addr_str = env_get("loadaddr"); + if (addr_str) + addr = simple_strtoul(addr_str, NULL, 16); + else + addr = CONFIG_SYS_LOAD_ADDR; + + return addr; +} + +/******************************************************************** + * eMMC services + ********************************************************************/ +#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(MMC_WRITE) +static int mmc_burn_image(size_t image_size) +{ + struct mmc *mmc; + lbaint_t start_lba; + lbaint_t blk_count; + ulong blk_written; + int err; + const u8 mmc_dev_num = CONFIG_SYS_MMC_ENV_DEV; +#ifdef CONFIG_BLK + struct blk_desc *blk_desc; +#endif + mmc = find_mmc_device(mmc_dev_num); + if (!mmc) { + printf("No SD/MMC/eMMC card found\n"); + return -ENOMEDIUM; + } + + err = mmc_init(mmc); + if (err) { + printf("%s(%d) init failed\n", IS_SD(mmc) ? "SD" : "MMC", + mmc_dev_num); + return err; + } + + /* SD reserves LBA-0 for MBR and boots from LBA-1, + * MMC/eMMC boots from LBA-0 + */ + start_lba = IS_SD(mmc) ? 1 : 0; +#ifdef CONFIG_BLK + blk_count = image_size / mmc->write_bl_len; + if (image_size % mmc->write_bl_len) + blk_count += 1; + + blk_desc = mmc_get_blk_desc(mmc); + if (!blk_desc) { + printf("Error - failed to obtain block descriptor\n"); + return -ENODEV; + } + blk_written = blk_dwrite(blk_desc, start_lba, blk_count, + (void *)get_load_addr()); +#else + blk_count = image_size / mmc->block_dev.blksz; + if (image_size % mmc->block_dev.blksz) + blk_count += 1; + + blk_written = mmc->block_dev.block_write(mmc_dev_num, + start_lba, blk_count, + (void *)get_load_addr()); +#endif /* CONFIG_BLK */ + if (blk_written != blk_count) { + printf("Error - written %#lx blocks\n", blk_written); + return -ENOSPC; + } + printf("Done!\n"); + + return 0; +} + +static size_t mmc_read_file(const char *file_name) +{ + loff_t act_read = 0; + int rc; + struct mmc *mmc; + const u8 mmc_dev_num = CONFIG_SYS_MMC_ENV_DEV; + + mmc = find_mmc_device(mmc_dev_num); + if (!mmc) { + printf("No SD/MMC/eMMC card found\n"); + return 0; + } + + if (mmc_init(mmc)) { + printf("%s(%d) init failed\n", IS_SD(mmc) ? "SD" : "MMC", + mmc_dev_num); + return 0; + } + + /* Load from data partition (0) */ + if (fs_set_blk_dev("mmc", "0", FS_TYPE_ANY)) { + printf("Error: MMC 0 not found\n"); + return 0; + } + + /* Perfrom file read */ + rc = fs_read(file_name, get_load_addr(), 0, 0, &act_read); + if (rc) + return 0; + + return act_read; +} + +static int is_mmc_active(void) +{ + return 1; +} +#else /* CONFIG_DM_MMC */ +static int mmc_burn_image(size_t image_size) +{ + return -ENODEV; +} + +static size_t mmc_read_file(const char *file_name) +{ + return 0; +} + +static int is_mmc_active(void) +{ + return 0; +} +#endif /* CONFIG_DM_MMC */ + +/******************************************************************** + * SPI services + ********************************************************************/ +#ifdef CONFIG_SPI_FLASH +static int spi_burn_image(size_t image_size) +{ + int ret; + struct spi_flash *flash; + u32 erase_bytes; + + /* Probe the SPI bus to get the flash device */ + flash = spi_flash_probe(CONFIG_ENV_SPI_BUS, + CONFIG_ENV_SPI_CS, + CONFIG_SF_DEFAULT_SPEED, + CONFIG_SF_DEFAULT_MODE); + if (!flash) { + printf("Failed to probe SPI Flash\n"); + return -ENOMEDIUM; + } + + erase_bytes = image_size + + (flash->erase_size - image_size % flash->erase_size); + printf("Erasing %d bytes (%d blocks) at offset 0 ...", + erase_bytes, erase_bytes / flash->erase_size); + ret = spi_flash_erase(flash, 0, erase_bytes); + if (ret) + printf("Error!\n"); + else + printf("Done!\n"); + + printf("Writing %d bytes from 0x%lx to offset 0 ...", + (int)image_size, get_load_addr()); + ret = spi_flash_write(flash, 0, image_size, (void *)get_load_addr()); + if (ret) + printf("Error!\n"); + else + printf("Done!\n"); + + return ret; +} + +static int is_spi_active(void) +{ + return 1; +} + +#else /* CONFIG_SPI_FLASH */ +static int spi_burn_image(size_t image_size) +{ + return -ENODEV; +} + +static int is_spi_active(void) +{ + return 0; +} +#endif /* CONFIG_SPI_FLASH */ + +/******************************************************************** + * NAND services + ********************************************************************/ +#ifdef CONFIG_CMD_NAND +static int nand_burn_image(size_t image_size) +{ + int ret; + uint32_t block_size; + struct mtd_info *mtd; + + mtd = get_nand_dev_by_index(nand_curr_device); + if (!mtd) { + puts("\nno devices available\n"); + return -ENOMEDIUM; + } + block_size = mtd->erasesize; + + /* Align U-Boot size to currently used blocksize */ + image_size = ((image_size + (block_size - 1)) & (~(block_size - 1))); + + /* Erase the U-Boot image space */ + printf("Erasing 0x%x - 0x%x:...", 0, (int)image_size); + ret = nand_erase(mtd, 0, image_size); + if (ret) { + printf("Error!\n"); + goto error; + } + printf("Done!\n"); + + /* Write the image to flash */ + printf("Writing %d bytes from 0x%lx to offset 0 ... ", + (int)image_size, get_load_addr()); + ret = nand_write(mtd, 0, &image_size, (void *)get_load_addr()); + if (ret) + printf("Error!\n"); + else + printf("Done!\n"); + +error: + return ret; +} + +static int is_nand_active(void) +{ + return 1; +} + +#else /* CONFIG_CMD_NAND */ +static int nand_burn_image(size_t image_size) +{ + return -ENODEV; +} + +static int is_nand_active(void) +{ + return 0; +} +#endif /* CONFIG_CMD_NAND */ + +/******************************************************************** + * USB services + ********************************************************************/ +#if defined(CONFIG_USB_STORAGE) && defined(CONFIG_BLK) +static size_t usb_read_file(const char *file_name) +{ + loff_t act_read = 0; + struct udevice *dev; + int rc; + + usb_stop(); + + if (usb_init() < 0) { + printf("Error: usb_init failed\n"); + return 0; + } + + /* Try to recognize storage devices immediately */ + blk_first_device(IF_TYPE_USB, &dev); + if (!dev) { + printf("Error: USB storage device not found\n"); + return 0; + } + + /* Always load from usb 0 */ + if (fs_set_blk_dev("usb", "0", FS_TYPE_ANY)) { + printf("Error: USB 0 not found\n"); + return 0; + } + + /* Perfrom file read */ + rc = fs_read(file_name, get_load_addr(), 0, 0, &act_read); + if (rc) + return 0; + + return act_read; +} + +static int is_usb_active(void) +{ + return 1; +} + +#else /* defined(CONFIG_USB_STORAGE) && defined (CONFIG_BLK) */ +static size_t usb_read_file(const char *file_name) +{ + return 0; +} + +static int is_usb_active(void) +{ + return 0; +} +#endif /* defined(CONFIG_USB_STORAGE) && defined (CONFIG_BLK) */ + +/******************************************************************** + * Network services + ********************************************************************/ +#ifdef CONFIG_CMD_NET +static size_t tftp_read_file(const char *file_name) +{ + /* + * update global variable image_load_addr before tftp file from network + */ + image_load_addr = get_load_addr(); + return net_loop(TFTPGET); +} + +static int is_tftp_active(void) +{ + return 1; +} + +#else +static size_t tftp_read_file(const char *file_name) +{ + return 0; +} + +static int is_tftp_active(void) +{ + return 0; +} +#endif /* CONFIG_CMD_NET */ + +enum bubt_devices { + BUBT_DEV_NET = 0, + BUBT_DEV_USB, + BUBT_DEV_MMC, + BUBT_DEV_SPI, + BUBT_DEV_NAND, + + BUBT_MAX_DEV +}; + +struct bubt_dev bubt_devs[BUBT_MAX_DEV] = { + {"tftp", tftp_read_file, NULL, is_tftp_active}, + {"usb", usb_read_file, NULL, is_usb_active}, + {"mmc", mmc_read_file, mmc_burn_image, is_mmc_active}, + {"spi", NULL, spi_burn_image, is_spi_active}, + {"nand", NULL, nand_burn_image, is_nand_active}, +}; + +static int bubt_write_file(struct bubt_dev *dst, size_t image_size) +{ + if (!dst->write) { + printf("Error: Write not supported on device %s\n", dst->name); + return -ENOTSUPP; + } + + return dst->write(image_size); +} + +#if defined(CONFIG_ARMADA_8K) +u32 do_checksum32(u32 *start, int32_t len) +{ + u32 sum = 0; + u32 *startp = start; + + do { + sum += *startp; + startp++; + len -= 4; + } while (len > 0); + + return sum; +} + +static int check_image_header(void) +{ + struct mvebu_image_header *hdr = + (struct mvebu_image_header *)get_load_addr(); + u32 header_len = hdr->prolog_size; + u32 checksum; + u32 checksum_ref = hdr->prolog_checksum; + + /* + * For now compare checksum, and magic. Later we can + * verify more stuff on the header like interface type, etc + */ + if (hdr->magic != MAIN_HDR_MAGIC) { + printf("ERROR: Bad MAGIC 0x%08x != 0x%08x\n", + hdr->magic, MAIN_HDR_MAGIC); + return -ENOEXEC; + } + + /* The checksum value is discarded from checksum calculation */ + hdr->prolog_checksum = 0; + + checksum = do_checksum32((u32 *)hdr, header_len); + if (checksum != checksum_ref) { + printf("Error: Bad Image checksum. 0x%x != 0x%x\n", + checksum, checksum_ref); + return -ENOEXEC; + } + + /* Restore the checksum before writing */ + hdr->prolog_checksum = checksum_ref; + printf("Image checksum...OK!\n"); + + return 0; +} +#elif defined(CONFIG_ARMADA_3700) /* Armada 3700 */ +static int check_image_header(void) +{ + struct common_tim_data *hdr = (struct common_tim_data *)get_load_addr(); + int image_num; + u8 hash_160_output[SHA1_SUM_LEN]; + u8 hash_256_output[SHA256_SUM_LEN]; + sha1_context hash1_text; + sha256_context hash256_text; + u8 *hash_output; + u32 hash_algorithm_id; + u32 image_size_to_hash; + u32 flash_entry_addr; + u32 *hash_value; + u32 internal_hash[HASH_SUM_LEN]; + const u8 *buff; + u32 num_of_image = hdr->num_images; + u32 version = hdr->version; + u32 trusted = hdr->trusted; + + /* bubt checksum validation only supports nontrusted images */ + if (trusted == 1) { + printf("bypass image validation, "); + printf("only untrusted image is supported now\n"); + return 0; + } + /* only supports image version 3.5 and 3.6 */ + if (version != IMAGE_VERSION_3_5_0 && version != IMAGE_VERSION_3_6_0) { + printf("Error: Unsupported Image version = 0x%08x\n", version); + return -ENOEXEC; + } + /* validate images hash value */ + for (image_num = 0; image_num < num_of_image; image_num++) { + struct mvebu_image_info *info = + (struct mvebu_image_info *)(get_load_addr() + + sizeof(struct common_tim_data) + + image_num * sizeof(struct mvebu_image_info)); + hash_algorithm_id = info->hash_algorithm_id; + image_size_to_hash = info->image_size_to_hash; + flash_entry_addr = info->flash_entry_addr; + hash_value = info->hash; + buff = (const u8 *)(get_load_addr() + flash_entry_addr); + + if (image_num == 0) { + /* + * The first image includes hash values in its content. + * For hash calculation, we need to save the original + * hash values to a local variable that will be + * copied back for comparsion and set all zeros to + * the orignal hash values for calculating new value. + * First image original format : + * x...x (datum1) x...x(orig. hash values) x...x(datum2) + * Replaced first image format : + * x...x (datum1) 0...0(hash values) x...x(datum2) + */ + memcpy(internal_hash, hash_value, + sizeof(internal_hash)); + memset(hash_value, 0, sizeof(internal_hash)); + } + if (image_size_to_hash == 0) { + printf("Warning: Image_%d hash checksum is disabled, ", + image_num); + printf("skip the image validation.\n"); + continue; + } + switch (hash_algorithm_id) { + case SHA1_SUM_LEN: + sha1_starts(&hash1_text); + sha1_update(&hash1_text, buff, image_size_to_hash); + sha1_finish(&hash1_text, hash_160_output); + hash_output = hash_160_output; + break; + case SHA256_SUM_LEN: + sha256_starts(&hash256_text); + sha256_update(&hash256_text, buff, image_size_to_hash); + sha256_finish(&hash256_text, hash_256_output); + hash_output = hash_256_output; + break; + default: + printf("Error: Unsupported hash_algorithm_id = %d\n", + hash_algorithm_id); + return -ENOEXEC; + } + if (image_num == 0) + memcpy(hash_value, internal_hash, + sizeof(internal_hash)); + if (memcmp(hash_value, hash_output, hash_algorithm_id) != 0) { + printf("Error: Image_%d checksum is not correct\n", + image_num); + return -ENOEXEC; + } + } + printf("Image checksum...OK!\n"); + + return 0; +} +#elif defined(CONFIG_ARMADA_38X) +static size_t a38x_header_size(const struct a38x_main_hdr_v1 *h) +{ + if (h->version == 1) + return (h->headersz_msb << 16) | le16_to_cpu(h->headersz_lsb); + + printf("Error: Invalid A38x image (header version 0x%x unknown)!\n", + h->version); + return 0; +} + +static uint8_t image_checksum8(const void *start, size_t len) +{ + u8 csum = 0; + const u8 *p = start; + + while (len) { + csum += *p; + ++p; + --len; + } + + return csum; +} + +static int check_image_header(void) +{ + u8 checksum; + const struct a38x_main_hdr_v1 *hdr = + (struct a38x_main_hdr_v1 *)get_load_addr(); + const size_t image_size = a38x_header_size(hdr); + + if (!image_size) + return -ENOEXEC; + + checksum = image_checksum8(hdr, image_size); + checksum -= hdr->checksum; + if (checksum != hdr->checksum) { + printf("Error: Bad A38x image checksum. 0x%x != 0x%x\n", + checksum, hdr->checksum); + return -ENOEXEC; + } + + printf("Image checksum...OK!\n"); + return 0; +} +#else /* Not ARMADA? */ +static int check_image_header(void) +{ + printf("bubt cmd does not support this SoC device or family!\n"); + return -ENOEXEC; +} +#endif + +static int bubt_check_boot_mode(const struct bubt_dev *dst) +{ + if (IS_ENABLED(CONFIG_ARMADA_38X)) { + int mode; + const struct a38x_main_hdr_v1 *hdr = + (struct a38x_main_hdr_v1 *)get_load_addr(); + + for (mode = 0; mode < ARRAY_SIZE(a38x_boot_modes); mode++) { + if (strcmp(a38x_boot_modes[mode].name, dst->name) == 0) + break; + } + + if (a38x_boot_modes[mode].id == hdr->blockid) + return 0; + + for (int i = 0; i < ARRAY_SIZE(a38x_boot_modes); i++) { + if (a38x_boot_modes[i].id == hdr->blockid) { + printf("Error: A38x image meant to be booted from " + "\"%s\", not \"%s\"!\n", + a38x_boot_modes[i].name, dst->name); + return -ENOEXEC; + } + } + + printf("Error: unknown boot device in A38x image header: " + "0x%x\n", hdr->blockid); + return -ENOEXEC; + } else { + return 0; + } +} + +static int bubt_verify(const struct bubt_dev *dst) +{ + int err; + + /* Check a correct image header exists */ + err = check_image_header(); + if (err) { + printf("Error: Image header verification failed\n"); + return err; + } + + err = bubt_check_boot_mode(dst); + if (err) { + printf("Error: Image boot mode verification failed\n"); + return err; + } + + return 0; +} + +static int bubt_read_file(struct bubt_dev *src) +{ + size_t image_size; + + if (!src->read) { + printf("Error: Read not supported on device \"%s\"\n", + src->name); + return 0; + } + + image_size = src->read(net_boot_file_name); + if (image_size <= 0) { + printf("Error: Failed to read file %s from %s\n", + net_boot_file_name, src->name); + return 0; + } + + return image_size; +} + +static int bubt_is_dev_active(struct bubt_dev *dev) +{ + if (!dev->active) { + printf("Device \"%s\" not supported by U-Boot image\n", + dev->name); + return 0; + } + + if (!dev->active()) { + printf("Device \"%s\" is inactive\n", dev->name); + return 0; + } + + return 1; +} + +struct bubt_dev *find_bubt_dev(char *dev_name) +{ + int dev; + + for (dev = 0; dev < BUBT_MAX_DEV; dev++) { + if (strcmp(bubt_devs[dev].name, dev_name) == 0) + return &bubt_devs[dev]; + } + + return 0; +} + +#define DEFAULT_BUBT_SRC "tftp" + +#ifndef DEFAULT_BUBT_DST +#ifdef CONFIG_MVEBU_SPI_BOOT +#define DEFAULT_BUBT_DST "spi" +#elif defined(CONFIG_MVEBU_NAND_BOOT) +#define DEFAULT_BUBT_DST "nand" +#elif defined(CONFIG_MVEBU_MMC_BOOT) +#define DEFAULT_BUBT_DST "mmc" +#else +#define DEFAULT_BUBT_DST "error" +#endif +#endif /* DEFAULT_BUBT_DST */ + +int do_bubt_cmd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) +{ + struct bubt_dev *src, *dst; + size_t image_size; + char src_dev_name[8]; + char dst_dev_name[8]; + char *name; + int err; + + if (argc < 2) + copy_filename(net_boot_file_name, + CONFIG_MVEBU_UBOOT_DFLT_NAME, + sizeof(net_boot_file_name)); + else + copy_filename(net_boot_file_name, argv[1], + sizeof(net_boot_file_name)); + + if (argc >= 3) { + strncpy(dst_dev_name, argv[2], 8); + } else { + name = DEFAULT_BUBT_DST; + strncpy(dst_dev_name, name, 8); + } + + if (argc >= 4) + strncpy(src_dev_name, argv[3], 8); + else + strncpy(src_dev_name, DEFAULT_BUBT_SRC, 8); + + /* Figure out the destination device */ + dst = find_bubt_dev(dst_dev_name); + if (!dst) { + printf("Error: Unknown destination \"%s\"\n", dst_dev_name); + return -EINVAL; + } + + if (!bubt_is_dev_active(dst)) + return -ENODEV; + + /* Figure out the source device */ + src = find_bubt_dev(src_dev_name); + if (!src) { + printf("Error: Unknown source \"%s\"\n", src_dev_name); + return 1; + } + + if (!bubt_is_dev_active(src)) + return -ENODEV; + + printf("Burning U-Boot image \"%s\" from \"%s\" to \"%s\"\n", + net_boot_file_name, src->name, dst->name); + + image_size = bubt_read_file(src); + if (!image_size) + return -EIO; + + err = bubt_verify(dst); + if (err) + return err; + + err = bubt_write_file(dst, image_size); + if (err) + return err; + + return 0; +} + +U_BOOT_CMD( + bubt, 4, 0, do_bubt_cmd, + "Burn a u-boot image to flash", + "[file-name] [destination [source]]\n" + "\t-file-name The image file name to burn. Default = " CONFIG_MVEBU_UBOOT_DFLT_NAME "\n" + "\t-destination Flash to burn to [spi, nand, mmc]. Default = " DEFAULT_BUBT_DST "\n" + "\t-source The source to load image from [tftp, usb, mmc]. Default = " DEFAULT_BUBT_SRC "\n" + "Examples:\n" + "\tbubt - Burn flash-image.bin from tftp to active boot device\n" + "\tbubt flash-image-new.bin nand - Burn flash-image-new.bin from tftp to NAND flash\n" + "\tbubt backup-flash-image.bin mmc usb - Burn backup-flash-image.bin from usb to MMC\n" + +); |