X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=common%2Ffb_mmc.c;h=cf5b77ca287eee2ce446910f6f8b6c3580b1bd4a;hb=c2900f595ef0fe83e2ece21981df8ea8961ac162;hp=3dad0ea8e37d0050d8a86467f63412f64552904f;hpb=cc0f08cd347ea9741375a70c490c6bee684f7bac;p=oweals%2Fu-boot.git diff --git a/common/fb_mmc.c b/common/fb_mmc.c index 3dad0ea8e3..cf5b77ca28 100644 --- a/common/fb_mmc.c +++ b/common/fb_mmc.c @@ -13,24 +13,35 @@ #include #include #include +#include +#include +/* + * FIXME: Ensure we always set these names via Kconfig once xxx_PARTITION is + * migrated + */ #ifndef CONFIG_FASTBOOT_GPT_NAME -#define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME +#define CONFIG_FASTBOOT_GPT_NAME "gpt" +#endif + + +#ifndef CONFIG_FASTBOOT_MBR_NAME +#define CONFIG_FASTBOOT_MBR_NAME "mbr" #endif -static char *response_str; +#define BOOT_PARTITION_NAME "boot" struct fb_mmc_sparse { struct blk_desc *dev_desc; }; -static int part_get_info_efi_by_name_or_alias(struct blk_desc *dev_desc, +static int part_get_info_by_name_or_alias(struct blk_desc *dev_desc, const char *name, disk_partition_t *info) { int ret; - ret = part_get_info_efi_by_name(dev_desc, name, info); - if (ret) { + ret = part_get_info_by_name(dev_desc, name, info); + if (ret < 0) { /* strlen("fastboot_partition_alias_") + 32(part_name) + 1 */ char env_alias_name[25 + 32 + 1]; char *aliased_part_name; @@ -38,9 +49,9 @@ static int part_get_info_efi_by_name_or_alias(struct blk_desc *dev_desc, /* check for alias */ strcpy(env_alias_name, "fastboot_partition_alias_"); strncat(env_alias_name, name, 32); - aliased_part_name = getenv(env_alias_name); + aliased_part_name = env_get(env_alias_name); if (aliased_part_name != NULL) - ret = part_get_info_efi_by_name(dev_desc, + ret = part_get_info_by_name(dev_desc, aliased_part_name, info); } return ret; @@ -55,6 +66,12 @@ static lbaint_t fb_mmc_sparse_write(struct sparse_storage *info, return blk_dwrite(dev_desc, blk, blkcnt, buffer); } +static lbaint_t fb_mmc_sparse_reserve(struct sparse_storage *info, + lbaint_t blk, lbaint_t blkcnt) +{ + return blkcnt; +} + static void write_raw_image(struct blk_desc *dev_desc, disk_partition_t *info, const char *part_name, void *buffer, unsigned int download_bytes) @@ -67,8 +84,8 @@ static void write_raw_image(struct blk_desc *dev_desc, disk_partition_t *info, 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"); + pr_err("too large for partition: '%s'\n", part_name); + fastboot_fail("too large for partition"); return; } @@ -76,53 +93,237 @@ static void write_raw_image(struct blk_desc *dev_desc, disk_partition_t *info, blks = blk_dwrite(dev_desc, info->start, blkcnt, buffer); if (blks != blkcnt) { - error("failed writing to device %d\n", dev_desc->devnum); - fastboot_fail(response_str, "failed writing to device"); + pr_err("failed writing to device %d\n", dev_desc->devnum); + fastboot_fail("failed writing to device"); return; } printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz, part_name); - fastboot_okay(response_str, ""); + fastboot_okay(""); +} + +#ifdef CONFIG_ANDROID_BOOT_IMAGE +/** + * Read Android boot image header from boot partition. + * + * @param[in] dev_desc MMC device descriptor + * @param[in] info Boot partition info + * @param[out] hdr Where to store read boot image header + * + * @return Boot image header sectors count or 0 on error + */ +static lbaint_t fb_mmc_get_boot_header(struct blk_desc *dev_desc, + disk_partition_t *info, + struct andr_img_hdr *hdr) +{ + ulong sector_size; /* boot partition sector size */ + lbaint_t hdr_sectors; /* boot image header sectors count */ + int res; + + /* Calculate boot image sectors count */ + sector_size = info->blksz; + hdr_sectors = DIV_ROUND_UP(sizeof(struct andr_img_hdr), sector_size); + if (hdr_sectors == 0) { + pr_err("invalid number of boot sectors: 0"); + fastboot_fail("invalid number of boot sectors: 0"); + return 0; + } + + /* Read the boot image header */ + res = blk_dread(dev_desc, info->start, hdr_sectors, (void *)hdr); + if (res != hdr_sectors) { + pr_err("cannot read header from boot partition"); + fastboot_fail("cannot read header from boot partition"); + return 0; + } + + /* Check boot header magic string */ + res = android_image_check_header(hdr); + if (res != 0) { + pr_err("bad boot image magic"); + fastboot_fail("boot partition not initialized"); + return 0; + } + + return hdr_sectors; +} + +/** + * Write downloaded zImage to boot partition and repack it properly. + * + * @param dev_desc MMC device descriptor + * @param download_buffer Address to fastboot buffer with zImage in it + * @param download_bytes Size of fastboot buffer, in bytes + * + * @return 0 on success or -1 on error + */ +static int fb_mmc_update_zimage(struct blk_desc *dev_desc, + void *download_buffer, + unsigned int download_bytes) +{ + uintptr_t hdr_addr; /* boot image header address */ + struct andr_img_hdr *hdr; /* boot image header */ + lbaint_t hdr_sectors; /* boot image header sectors */ + u8 *ramdisk_buffer; + u32 ramdisk_sector_start; + u32 ramdisk_sectors; + u32 kernel_sector_start; + u32 kernel_sectors; + u32 sectors_per_page; + disk_partition_t info; + int res; + + puts("Flashing zImage\n"); + + /* Get boot partition info */ + res = part_get_info_by_name(dev_desc, BOOT_PARTITION_NAME, &info); + if (res < 0) { + pr_err("cannot find boot partition"); + fastboot_fail("cannot find boot partition"); + return -1; + } + + /* Put boot image header in fastboot buffer after downloaded zImage */ + hdr_addr = (uintptr_t)download_buffer + ALIGN(download_bytes, PAGE_SIZE); + hdr = (struct andr_img_hdr *)hdr_addr; + + /* Read boot image header */ + hdr_sectors = fb_mmc_get_boot_header(dev_desc, &info, hdr); + if (hdr_sectors == 0) { + pr_err("unable to read boot image header"); + fastboot_fail("unable to read boot image header"); + return -1; + } + + /* Check if boot image has second stage in it (we don't support it) */ + if (hdr->second_size > 0) { + pr_err("moving second stage is not supported yet"); + fastboot_fail("moving second stage is not supported yet"); + return -1; + } + + /* Extract ramdisk location */ + sectors_per_page = hdr->page_size / info.blksz; + ramdisk_sector_start = info.start + sectors_per_page; + ramdisk_sector_start += DIV_ROUND_UP(hdr->kernel_size, hdr->page_size) * + sectors_per_page; + ramdisk_sectors = DIV_ROUND_UP(hdr->ramdisk_size, hdr->page_size) * + sectors_per_page; + + /* Read ramdisk and put it in fastboot buffer after boot image header */ + ramdisk_buffer = (u8 *)hdr + (hdr_sectors * info.blksz); + res = blk_dread(dev_desc, ramdisk_sector_start, ramdisk_sectors, + ramdisk_buffer); + if (res != ramdisk_sectors) { + pr_err("cannot read ramdisk from boot partition"); + fastboot_fail("cannot read ramdisk from boot partition"); + return -1; + } + + /* Write new kernel size to boot image header */ + hdr->kernel_size = download_bytes; + res = blk_dwrite(dev_desc, info.start, hdr_sectors, (void *)hdr); + if (res == 0) { + pr_err("cannot writeback boot image header"); + fastboot_fail("cannot write back boot image header"); + return -1; + } + + /* Write the new downloaded kernel */ + kernel_sector_start = info.start + sectors_per_page; + kernel_sectors = DIV_ROUND_UP(hdr->kernel_size, hdr->page_size) * + sectors_per_page; + res = blk_dwrite(dev_desc, kernel_sector_start, kernel_sectors, + download_buffer); + if (res == 0) { + pr_err("cannot write new kernel"); + fastboot_fail("cannot write new kernel"); + return -1; + } + + /* Write the saved ramdisk back */ + ramdisk_sector_start = info.start + sectors_per_page; + ramdisk_sector_start += DIV_ROUND_UP(hdr->kernel_size, hdr->page_size) * + sectors_per_page; + res = blk_dwrite(dev_desc, ramdisk_sector_start, ramdisk_sectors, + ramdisk_buffer); + if (res == 0) { + pr_err("cannot write back original ramdisk"); + fastboot_fail("cannot write back original ramdisk"); + return -1; + } + + puts("........ zImage was updated in boot partition\n"); + fastboot_okay(""); + return 0; } +#endif void fb_mmc_flash_write(const char *cmd, void *download_buffer, - unsigned int download_bytes, char *response) + unsigned int download_bytes) { struct blk_desc *dev_desc; disk_partition_t info; - /* initialize the response buffer */ - response_str = response; - dev_desc = blk_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"); + pr_err("invalid mmc device\n"); + fastboot_fail("invalid mmc device"); return; } +#if CONFIG_IS_ENABLED(EFI_PARTITION) 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"); + fastboot_fail("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"); + fastboot_fail("writing GPT partitions failed"); + return; + } + printf("........ success\n"); + fastboot_okay(""); + return; + } +#endif + +#if CONFIG_IS_ENABLED(DOS_PARTITION) + if (strcmp(cmd, CONFIG_FASTBOOT_MBR_NAME) == 0) { + printf("%s: updating MBR\n", __func__); + if (is_valid_dos_buf(download_buffer)) { + printf("%s: invalid MBR - refusing to write to flash\n", + __func__); + fastboot_fail("invalid MBR partition"); + return; + } + if (write_mbr_partition(dev_desc, download_buffer)) { + printf("%s: writing MBR partition failed\n", __func__); + fastboot_fail("writing MBR partition failed"); return; } printf("........ success\n"); - fastboot_okay(response_str, ""); + fastboot_okay(""); return; - } else if (part_get_info_efi_by_name_or_alias(dev_desc, cmd, &info)) { - error("cannot find partition: '%s'\n", cmd); - fastboot_fail(response_str, "cannot find partition"); + } +#endif + +#ifdef CONFIG_ANDROID_BOOT_IMAGE + if (strncasecmp(cmd, "zimage", 6) == 0) { + fb_mmc_update_zimage(dev_desc, download_buffer, download_bytes); + return; + } +#endif + + if (part_get_info_by_name_or_alias(dev_desc, cmd, &info) < 0) { + pr_err("cannot find partition: '%s'\n", cmd); + fastboot_fail("cannot find partition"); return; } @@ -136,20 +337,21 @@ void fb_mmc_flash_write(const char *cmd, void *download_buffer, sparse.start = info.start; sparse.size = info.size; sparse.write = fb_mmc_sparse_write; + sparse.reserve = fb_mmc_sparse_reserve; printf("Flashing sparse image at offset " LBAFU "\n", sparse.start); sparse.priv = &sparse_priv; write_sparse_image(&sparse, cmd, download_buffer, - download_bytes, response_str); + download_bytes); } else { write_raw_image(dev_desc, &info, cmd, download_buffer, download_bytes); } } -void fb_mmc_erase(const char *cmd, char *response) +void fb_mmc_erase(const char *cmd) { int ret; struct blk_desc *dev_desc; @@ -158,25 +360,22 @@ void fb_mmc_erase(const char *cmd, char *response) 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"); + pr_err("invalid mmc device"); + fastboot_fail("invalid mmc device"); return; } - /* initialize the response buffer */ - response_str = response; - dev_desc = blk_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"); + pr_err("invalid mmc device"); + fastboot_fail("invalid mmc device"); return; } - ret = part_get_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"); + ret = part_get_info_by_name_or_alias(dev_desc, cmd, &info); + if (ret < 0) { + pr_err("cannot find partition: '%s'", cmd); + fastboot_fail("cannot find partition"); return; } @@ -192,14 +391,14 @@ void fb_mmc_erase(const char *cmd, char *response) 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); + blks = blk_derase(dev_desc, blks_start, blks_size); if (blks != blks_size) { - error("failed erasing from device %d", dev_desc->devnum); - fastboot_fail(response_str, "failed erasing from device"); + pr_err("failed erasing from device %d", dev_desc->devnum); + fastboot_fail("failed erasing from device"); return; } printf("........ erased " LBAFU " bytes from '%s'\n", blks_size * info.blksz, cmd); - fastboot_okay(response_str, ""); + fastboot_okay(""); }