fb_mmc.c
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/*
* Copyright 2014 Broadcom Corporation.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <fb_mmc.h>
#include <part.h>
#include <aboot.h>
#include <sparse_format.h>
/* The 64 defined bytes plus the '\0' */
#define RESPONSE_LEN (64 + 1)
static char *response_str;
void fastboot_fail(const char *s)
{
strncpy(response_str, "FAIL", 4);
strncat(response_str, s, RESPONSE_LEN - 4 - 1);
}
void fastboot_okay(const char *s)
{
strncpy(response_str, "OKAY", 4);
strncat(response_str, s, RESPONSE_LEN - 4 - 1);
}
static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info,
const char *part_name, void *buffer,
unsigned int download_bytes)
{
lbaint_t blkcnt;
lbaint_t blks;
/* determine number of blocks to write */
blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1));
blkcnt = blkcnt / info->blksz;
if (blkcnt > info->size) {
error("too large for partition: '%s'\n", part_name);
fastboot_fail("too large for partition");
return;
}
puts("Flashing Raw Image\n");
blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt,
buffer);
if (blks != blkcnt) {
error("failed writing to device %d\n", dev_desc->dev);
fastboot_fail("failed writing to device");
return;
}
printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
part_name);
fastboot_okay("");
}
void fb_mmc_flash_write(const char *cmd, void *download_buffer,
unsigned int download_bytes, char *response)
{
int ret;
block_dev_desc_t *dev_desc;
disk_partition_t info;
/* initialize the response buffer */
response_str = response;
dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
error("invalid mmc device\n");
fastboot_fail("invalid mmc device");
return;
}
ret = get_partition_info_efi_by_name(dev_desc, cmd, &info);
if (ret) {
error("cannot find partition: '%s'\n", cmd);
fastboot_fail("cannot find partition");
return;
}
if (is_sparse_image(download_buffer))
write_sparse_image(dev_desc, &info, cmd, download_buffer,
download_bytes);
else
write_raw_image(dev_desc, &info, cmd, download_buffer,
download_bytes);
}