2 * Copyright 2014 Broadcom Corporation.
4 * SPDX-License-Identifier: GPL-2.0+
12 #include <image-sparse.h>
17 #ifndef CONFIG_FASTBOOT_GPT_NAME
18 #define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
21 static char *response_str;
23 struct fb_mmc_sparse {
24 struct blk_desc *dev_desc;
27 static int part_get_info_efi_by_name_or_alias(struct blk_desc *dev_desc,
28 const char *name, disk_partition_t *info)
32 ret = part_get_info_efi_by_name(dev_desc, name, info);
34 /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */
35 char env_alias_name[25 + 32 + 1];
36 char *aliased_part_name;
39 strcpy(env_alias_name, "fastboot_partition_alias_");
40 strncat(env_alias_name, name, 32);
41 aliased_part_name = getenv(env_alias_name);
42 if (aliased_part_name != NULL)
43 ret = part_get_info_efi_by_name(dev_desc,
44 aliased_part_name, info);
49 static lbaint_t fb_mmc_sparse_write(struct sparse_storage *info,
50 lbaint_t blk, lbaint_t blkcnt, const void *buffer)
52 struct fb_mmc_sparse *sparse = info->priv;
53 struct blk_desc *dev_desc = sparse->dev_desc;
55 return blk_dwrite(dev_desc, blk, blkcnt, buffer);
58 static void write_raw_image(struct blk_desc *dev_desc, disk_partition_t *info,
59 const char *part_name, void *buffer,
60 unsigned int download_bytes)
65 /* determine number of blocks to write */
66 blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1));
67 blkcnt = lldiv(blkcnt, info->blksz);
69 if (blkcnt > info->size) {
70 error("too large for partition: '%s'\n", part_name);
71 fastboot_fail(response_str, "too large for partition");
75 puts("Flashing Raw Image\n");
77 blks = blk_dwrite(dev_desc, info->start, blkcnt, buffer);
79 error("failed writing to device %d\n", dev_desc->devnum);
80 fastboot_fail(response_str, "failed writing to device");
84 printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
86 fastboot_okay(response_str, "");
89 void fb_mmc_flash_write(const char *cmd, void *download_buffer,
90 unsigned int download_bytes, char *response)
92 struct blk_desc *dev_desc;
93 disk_partition_t info;
95 /* initialize the response buffer */
96 response_str = response;
98 dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
99 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
100 error("invalid mmc device\n");
101 fastboot_fail(response_str, "invalid mmc device");
105 if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
106 printf("%s: updating MBR, Primary and Backup GPT(s)\n",
108 if (is_valid_gpt_buf(dev_desc, download_buffer)) {
109 printf("%s: invalid GPT - refusing to write to flash\n",
111 fastboot_fail(response_str, "invalid GPT partition");
114 if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
115 printf("%s: writing GPT partitions failed\n", __func__);
116 fastboot_fail(response_str,
117 "writing GPT partitions failed");
120 printf("........ success\n");
121 fastboot_okay(response_str, "");
123 } else if (part_get_info_efi_by_name_or_alias(dev_desc, cmd, &info)) {
124 error("cannot find partition: '%s'\n", cmd);
125 fastboot_fail(response_str, "cannot find partition");
129 if (is_sparse_image(download_buffer)) {
130 struct fb_mmc_sparse sparse_priv;
131 struct sparse_storage sparse;
133 sparse_priv.dev_desc = dev_desc;
135 sparse.blksz = info.blksz;
136 sparse.start = info.start;
137 sparse.size = info.size;
138 sparse.write = fb_mmc_sparse_write;
140 printf("Flashing sparse image at offset " LBAFU "\n",
143 sparse.priv = &sparse_priv;
144 write_sparse_image(&sparse, cmd, download_buffer,
145 download_bytes, response_str);
147 write_raw_image(dev_desc, &info, cmd, download_buffer,
152 void fb_mmc_erase(const char *cmd, char *response)
155 struct blk_desc *dev_desc;
156 disk_partition_t info;
157 lbaint_t blks, blks_start, blks_size, grp_size;
158 struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);
161 error("invalid mmc device");
162 fastboot_fail(response_str, "invalid mmc device");
166 /* initialize the response buffer */
167 response_str = response;
169 dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
170 if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
171 error("invalid mmc device");
172 fastboot_fail(response_str, "invalid mmc device");
176 ret = part_get_info_efi_by_name_or_alias(dev_desc, cmd, &info);
178 error("cannot find partition: '%s'", cmd);
179 fastboot_fail(response_str, "cannot find partition");
183 /* Align blocks to erase group size to avoid erasing other partitions */
184 grp_size = mmc->erase_grp_size;
185 blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
186 if (info.size >= grp_size)
187 blks_size = (info.size - (blks_start - info.start)) &
192 printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n",
193 blks_start, blks_start + blks_size);
195 blks = dev_desc->block_erase(dev_desc, blks_start, blks_size);
196 if (blks != blks_size) {
197 error("failed erasing from device %d", dev_desc->devnum);
198 fastboot_fail(response_str, "failed erasing from device");
202 printf("........ erased " LBAFU " bytes from '%s'\n",
203 blks_size * info.blksz, cmd);
204 fastboot_okay(response_str, "");