mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 17:08:52 +09:00
![Stephen Warren](/assets/img/avatar_default.png)
This will allow the implementation to make use of data in the block_dev structure beyond the base device number. This will be useful so that eMMC block devices can encompass the HW partition ID rather than treating this out-of-band. Equally, the existence of the priv field is crying out for this patch to exist. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Tom Rini <trini@konsulko.com>
219 lines
5.7 KiB
C
219 lines
5.7 KiB
C
/*
|
|
* Copyright 2014 Broadcom Corporation.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <common.h>
|
|
#include <errno.h>
|
|
#include <fastboot.h>
|
|
#include <fb_mmc.h>
|
|
#include <image-sparse.h>
|
|
#include <part.h>
|
|
#include <sparse_format.h>
|
|
#include <mmc.h>
|
|
#include <div64.h>
|
|
|
|
#ifndef CONFIG_FASTBOOT_GPT_NAME
|
|
#define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
|
|
#endif
|
|
|
|
static char *response_str;
|
|
|
|
struct fb_mmc_sparse {
|
|
block_dev_desc_t *dev_desc;
|
|
};
|
|
|
|
static int get_partition_info_efi_by_name_or_alias(block_dev_desc_t *dev_desc,
|
|
const char *name, disk_partition_t *info)
|
|
{
|
|
int ret;
|
|
|
|
ret = get_partition_info_efi_by_name(dev_desc, name, info);
|
|
if (ret) {
|
|
/* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
|
|
char env_alias_name[25 + 32 + 1];
|
|
char *aliased_part_name;
|
|
|
|
/* check for alias */
|
|
strcpy(env_alias_name, "fastboot_partition_alias_");
|
|
strncat(env_alias_name, name, 32);
|
|
aliased_part_name = getenv(env_alias_name);
|
|
if (aliased_part_name != NULL)
|
|
ret = get_partition_info_efi_by_name(dev_desc,
|
|
aliased_part_name, info);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int fb_mmc_sparse_write(struct sparse_storage *storage,
|
|
void *priv,
|
|
unsigned int offset,
|
|
unsigned int size,
|
|
char *data)
|
|
{
|
|
struct fb_mmc_sparse *sparse = priv;
|
|
block_dev_desc_t *dev_desc = sparse->dev_desc;
|
|
int ret;
|
|
|
|
ret = dev_desc->block_write(dev_desc, offset, size, data);
|
|
if (!ret)
|
|
return -EIO;
|
|
|
|
return ret;
|
|
}
|
|
|
|
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 = lldiv(blkcnt, info->blksz);
|
|
|
|
if (blkcnt > info->size) {
|
|
error("too large for partition: '%s'\n", part_name);
|
|
fastboot_fail(response_str, "too large for partition");
|
|
return;
|
|
}
|
|
|
|
puts("Flashing Raw Image\n");
|
|
|
|
blks = dev_desc->block_write(dev_desc, info->start, blkcnt, buffer);
|
|
if (blks != blkcnt) {
|
|
error("failed writing to device %d\n", dev_desc->dev);
|
|
fastboot_fail(response_str, "failed writing to device");
|
|
return;
|
|
}
|
|
|
|
printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
|
|
part_name);
|
|
fastboot_okay(response_str, "");
|
|
}
|
|
|
|
void fb_mmc_flash_write(const char *cmd, unsigned int session_id,
|
|
void *download_buffer, unsigned int download_bytes,
|
|
char *response)
|
|
{
|
|
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(response_str, "invalid mmc device");
|
|
return;
|
|
}
|
|
|
|
if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
|
|
printf("%s: updating MBR, Primary and Backup GPT(s)\n",
|
|
__func__);
|
|
if (is_valid_gpt_buf(dev_desc, download_buffer)) {
|
|
printf("%s: invalid GPT - refusing to write to flash\n",
|
|
__func__);
|
|
fastboot_fail(response_str, "invalid GPT partition");
|
|
return;
|
|
}
|
|
if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
|
|
printf("%s: writing GPT partitions failed\n", __func__);
|
|
fastboot_fail(response_str,
|
|
"writing GPT partitions failed");
|
|
return;
|
|
}
|
|
printf("........ success\n");
|
|
fastboot_okay(response_str, "");
|
|
return;
|
|
} else if (get_partition_info_efi_by_name_or_alias(dev_desc, cmd, &info)) {
|
|
error("cannot find partition: '%s'\n", cmd);
|
|
fastboot_fail(response_str, "cannot find partition");
|
|
return;
|
|
}
|
|
|
|
if (is_sparse_image(download_buffer)) {
|
|
struct fb_mmc_sparse sparse_priv;
|
|
sparse_storage_t sparse;
|
|
|
|
sparse_priv.dev_desc = dev_desc;
|
|
|
|
sparse.block_sz = info.blksz;
|
|
sparse.start = info.start;
|
|
sparse.size = info.size;
|
|
sparse.name = cmd;
|
|
sparse.write = fb_mmc_sparse_write;
|
|
|
|
printf("Flashing sparse image at offset " LBAFU "\n",
|
|
info.start);
|
|
|
|
store_sparse_image(&sparse, &sparse_priv, session_id,
|
|
download_buffer);
|
|
} else {
|
|
write_raw_image(dev_desc, &info, cmd, download_buffer,
|
|
download_bytes);
|
|
}
|
|
|
|
fastboot_okay(response_str, "");
|
|
}
|
|
|
|
void fb_mmc_erase(const char *cmd, char *response)
|
|
{
|
|
int ret;
|
|
block_dev_desc_t *dev_desc;
|
|
disk_partition_t info;
|
|
lbaint_t blks, blks_start, blks_size, grp_size;
|
|
struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);
|
|
|
|
if (mmc == NULL) {
|
|
error("invalid mmc device");
|
|
fastboot_fail(response_str, "invalid mmc device");
|
|
return;
|
|
}
|
|
|
|
/* 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");
|
|
fastboot_fail(response_str, "invalid mmc device");
|
|
return;
|
|
}
|
|
|
|
ret = get_partition_info_efi_by_name_or_alias(dev_desc, cmd, &info);
|
|
if (ret) {
|
|
error("cannot find partition: '%s'", cmd);
|
|
fastboot_fail(response_str, "cannot find partition");
|
|
return;
|
|
}
|
|
|
|
/* Align blocks to erase group size to avoid erasing other partitions */
|
|
grp_size = mmc->erase_grp_size;
|
|
blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
|
|
if (info.size >= grp_size)
|
|
blks_size = (info.size - (blks_start - info.start)) &
|
|
(~(grp_size - 1));
|
|
else
|
|
blks_size = 0;
|
|
|
|
printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n",
|
|
blks_start, blks_start + blks_size);
|
|
|
|
blks = dev_desc->block_erase(dev_desc, blks_start, blks_size);
|
|
if (blks != blks_size) {
|
|
error("failed erasing from device %d", dev_desc->dev);
|
|
fastboot_fail(response_str, "failed erasing from device");
|
|
return;
|
|
}
|
|
|
|
printf("........ erased " LBAFU " bytes from '%s'\n",
|
|
blks_size * info.blksz, cmd);
|
|
fastboot_okay(response_str, "");
|
|
}
|