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![Simon Glass](/assets/img/avatar_default.png)
To ease conversion to driver model, add helper functions which deal with calling each block device method. With driver model we can reimplement these functions with the same arguments. Use inline functions to avoid increasing code size on some boards. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Stephen Warren <swarren@nvidia.com>
220 lines
5.7 KiB
C
220 lines
5.7 KiB
C
/*
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* Copyright 2014 Broadcom Corporation.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <common.h>
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#include <blk.h>
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#include <errno.h>
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#include <fastboot.h>
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#include <fb_mmc.h>
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#include <image-sparse.h>
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#include <part.h>
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#include <sparse_format.h>
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#include <mmc.h>
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#include <div64.h>
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#ifndef CONFIG_FASTBOOT_GPT_NAME
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#define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
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#endif
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static char *response_str;
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struct fb_mmc_sparse {
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struct blk_desc *dev_desc;
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};
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static int part_get_info_efi_by_name_or_alias(struct blk_desc *dev_desc,
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const char *name, disk_partition_t *info)
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{
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int ret;
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ret = part_get_info_efi_by_name(dev_desc, name, info);
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if (ret) {
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/* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
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char env_alias_name[25 + 32 + 1];
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char *aliased_part_name;
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/* check for alias */
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strcpy(env_alias_name, "fastboot_partition_alias_");
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strncat(env_alias_name, name, 32);
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aliased_part_name = getenv(env_alias_name);
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if (aliased_part_name != NULL)
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ret = part_get_info_efi_by_name(dev_desc,
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aliased_part_name, info);
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}
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return ret;
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}
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static int fb_mmc_sparse_write(struct sparse_storage *storage,
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void *priv,
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unsigned int offset,
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unsigned int size,
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char *data)
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{
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struct fb_mmc_sparse *sparse = priv;
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struct blk_desc *dev_desc = sparse->dev_desc;
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int ret;
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ret = blk_dwrite(dev_desc, offset, size, data);
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if (!ret)
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return -EIO;
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return ret;
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}
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static void write_raw_image(struct blk_desc *dev_desc, disk_partition_t *info,
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const char *part_name, void *buffer,
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unsigned int download_bytes)
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{
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lbaint_t blkcnt;
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lbaint_t blks;
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/* determine number of blocks to write */
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blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1));
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blkcnt = lldiv(blkcnt, info->blksz);
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if (blkcnt > info->size) {
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error("too large for partition: '%s'\n", part_name);
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fastboot_fail(response_str, "too large for partition");
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return;
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}
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puts("Flashing Raw Image\n");
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blks = blk_dwrite(dev_desc, info->start, blkcnt, buffer);
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if (blks != blkcnt) {
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error("failed writing to device %d\n", dev_desc->devnum);
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fastboot_fail(response_str, "failed writing to device");
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return;
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}
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printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
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part_name);
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fastboot_okay(response_str, "");
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}
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void fb_mmc_flash_write(const char *cmd, unsigned int session_id,
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void *download_buffer, unsigned int download_bytes,
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char *response)
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{
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struct blk_desc *dev_desc;
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disk_partition_t info;
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/* initialize the response buffer */
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response_str = response;
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dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
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if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
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error("invalid mmc device\n");
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fastboot_fail(response_str, "invalid mmc device");
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return;
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}
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if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
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printf("%s: updating MBR, Primary and Backup GPT(s)\n",
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__func__);
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if (is_valid_gpt_buf(dev_desc, download_buffer)) {
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printf("%s: invalid GPT - refusing to write to flash\n",
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__func__);
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fastboot_fail(response_str, "invalid GPT partition");
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return;
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}
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if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
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printf("%s: writing GPT partitions failed\n", __func__);
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fastboot_fail(response_str,
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"writing GPT partitions failed");
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return;
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}
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printf("........ success\n");
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fastboot_okay(response_str, "");
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return;
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} else if (part_get_info_efi_by_name_or_alias(dev_desc, cmd, &info)) {
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error("cannot find partition: '%s'\n", cmd);
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fastboot_fail(response_str, "cannot find partition");
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return;
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}
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if (is_sparse_image(download_buffer)) {
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struct fb_mmc_sparse sparse_priv;
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sparse_storage_t sparse;
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sparse_priv.dev_desc = dev_desc;
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sparse.block_sz = info.blksz;
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sparse.start = info.start;
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sparse.size = info.size;
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sparse.name = cmd;
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sparse.write = fb_mmc_sparse_write;
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printf("Flashing sparse image at offset " LBAFU "\n",
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info.start);
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store_sparse_image(&sparse, &sparse_priv, session_id,
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download_buffer);
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} else {
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write_raw_image(dev_desc, &info, cmd, download_buffer,
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download_bytes);
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}
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fastboot_okay(response_str, "");
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}
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void fb_mmc_erase(const char *cmd, char *response)
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{
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int ret;
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struct blk_desc *dev_desc;
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disk_partition_t info;
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lbaint_t blks, blks_start, blks_size, grp_size;
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struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);
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if (mmc == NULL) {
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error("invalid mmc device");
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fastboot_fail(response_str, "invalid mmc device");
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return;
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}
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/* initialize the response buffer */
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response_str = response;
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dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
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if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
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error("invalid mmc device");
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fastboot_fail(response_str, "invalid mmc device");
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return;
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}
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ret = part_get_info_efi_by_name_or_alias(dev_desc, cmd, &info);
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if (ret) {
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error("cannot find partition: '%s'", cmd);
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fastboot_fail(response_str, "cannot find partition");
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return;
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}
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/* Align blocks to erase group size to avoid erasing other partitions */
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grp_size = mmc->erase_grp_size;
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blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
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if (info.size >= grp_size)
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blks_size = (info.size - (blks_start - info.start)) &
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(~(grp_size - 1));
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else
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blks_size = 0;
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printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n",
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blks_start, blks_start + blks_size);
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blks = dev_desc->block_erase(dev_desc, blks_start, blks_size);
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if (blks != blks_size) {
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error("failed erasing from device %d", dev_desc->devnum);
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fastboot_fail(response_str, "failed erasing from device");
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return;
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}
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printf("........ erased " LBAFU " bytes from '%s'\n",
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blks_size * info.blksz, cmd);
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fastboot_okay(response_str, "");
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}
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