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u-boot/cmd/mvebu/bubt.c
Tom Rini 17ead040d4 Audit <flash.h> inclusion 
A large number of files include <flash.h> as it used to be how various
SPI flash related functions were found, or for other reasons entirely.
In order to migrate some further CONFIG symbols to Kconfig we need to
not include flash.h in cases where we don't have a NOR flash of some
sort enabled.  Furthermore, in cases where we are in common code and it
doesn't make sense to try and further refactor the code itself in to new
files we need to guard this inclusion.

Signed-off-by: Tom Rini <trini@konsulko.com>
2022-08-04 16:18:47 -04:00

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// 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 <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>
#include <u-boot/sha512.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 tim_boot_flash_sign {
unsigned int id;
const char *name;
};
struct tim_boot_flash_sign tim_boot_flash_signs[] = {
{ 0x454d4d08, "mmc" },
{ 0x454d4d0b, "mmc" },
{ 0x5350490a, "spi" },
{ 0x5350491a, "nand" },
{ 0x55415223, "uart" },
{ 0x53415432, "sata" },
{},
};
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;
};
#elif defined(CONFIG_ARMADA_32BIT)
/* Structure of the main header, version 1 (Armada 370/XP/375/38x/39x) */
struct a38x_main_hdr_v1 {
u8 blockid; /* 0x0 */
u8 flags; /* 0x1 */
u16 nandpagesize; /* 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" },
{},
};
#endif
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 = hextoul(addr_str, NULL);
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_SF_DEFAULT_BUS,
CONFIG_SF_DEFAULT_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)
{
int ret;
/*
* update global variable image_load_addr before tftp file from network
*/
image_load_addr = get_load_addr();
ret = net_loop(TFTPGET);
return ret > 0 ? ret : 0;
}
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];
u8 hash_512_output[SHA512_SUM_LEN];
sha1_context hash1_text;
sha256_context hash256_text;
sha512_context hash512_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;
case SHA512_SUM_LEN:
sha512_starts(&hash512_text);
sha512_update(&hash512_text, buff, image_size_to_hash);
sha512_finish(&hash512_text, hash_512_output);
hash_output = hash_512_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_32BIT)
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 defined(CONFIG_ARMADA_3700) || defined(CONFIG_ARMADA_32BIT)
int mode;
#if defined(CONFIG_ARMADA_3700)
const struct tim_boot_flash_sign *boot_modes = tim_boot_flash_signs;
const struct common_tim_data *hdr =
(struct common_tim_data *)get_load_addr();
u32 id = hdr->boot_flash_sign;
#elif defined(CONFIG_ARMADA_32BIT)
const struct a38x_boot_mode *boot_modes = a38x_boot_modes;
const struct a38x_main_hdr_v1 *hdr =
(struct a38x_main_hdr_v1 *)get_load_addr();
u32 id = hdr->blockid;
#endif
for (mode = 0; boot_modes[mode].name; mode++) {
if (boot_modes[mode].id == id)
break;
}
if (!boot_modes[mode].name) {
printf("Error: unknown boot device in image header: 0x%x\n", id);
return -ENOEXEC;
}
if (strcmp(boot_modes[mode].name, dst->name) == 0)
return 0;
printf("Error: image meant to be booted from \"%s\", not \"%s\"!\n",
boot_modes[mode].name, dst->name);
return -ENOEXEC;
#else
return 0;
#endif
}
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 1;
}
if (!bubt_is_dev_active(dst))
return 1;
/* 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 1;
err = bubt_verify(dst);
if (err)
return 1;
err = bubt_write_file(dst, image_size);
if (err)
return 1;
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"
);
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