This adds support for partitions of the form "dev.hwpart:part" and "dev#partname". This allows one to flash to eMMC boot partitions without having to use CONFIG_FASTBOOT_MMC_BOOT1_SUPPORT. It also allows one to flash to an entire device without needing CONFIG_FASTBOOT_MMC_USER_NAME. Lastly, one can also flash MMC devices other than CONFIG_FASTBOOT_FLASH_MMC_DEV.
Because devices can be specified explicitly, CONFIG_FASTBOOT_FLASH_MMC_DEV is used only when necessary for existing functionality. For those cases, fastboot_mmc_get_dev has been added as a helper function. This allows
There should be no conflicts with the existing system, but just in case, I have ordered detection of these names after all existing names.
The fastboot_mmc_part test has been updated for these new names.
Signed-off-by: Sean Anderson sean.anderson@seco.com Reviewed-by: Simon Glass sjg@chromium.org ---
(no changes since v4)
Changes in v4: - Fix missing closing brace
drivers/fastboot/fb_mmc.c | 157 ++++++++++++++++++++++++-------------- test/dm/fastboot.c | 37 ++++++++- 2 files changed, 132 insertions(+), 62 deletions(-)
diff --git a/drivers/fastboot/fb_mmc.c b/drivers/fastboot/fb_mmc.c index 71eeb02c8f..8e74e50e91 100644 --- a/drivers/fastboot/fb_mmc.c +++ b/drivers/fastboot/fb_mmc.c @@ -76,12 +76,37 @@ static int raw_part_get_info_by_name(struct blk_desc *dev_desc, return 0; }
-static int part_get_info_by_name_or_alias(struct blk_desc *dev_desc, - const char *name, struct disk_partition *info) +static int do_get_part_info(struct blk_desc **dev_desc, const char *name, + struct disk_partition *info) { int ret;
- ret = part_get_info_by_name(dev_desc, name, info); + /* First try partition names on the default device */ + *dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); + if (*dev_desc) { + ret = part_get_info_by_name(*dev_desc, name, info); + if (ret >= 0) + return ret; + + /* Then try raw partitions */ + ret = raw_part_get_info_by_name(*dev_desc, name, info); + if (ret >= 0) + return ret; + } + + /* Then try dev.hwpart:part */ + ret = part_get_info_by_dev_and_name_or_num("mmc", name, dev_desc, + info, true); + return ret; +} + +static int part_get_info_by_name_or_alias(struct blk_desc **dev_desc, + const char *name, + struct disk_partition *info) +{ + int ret; + + ret = do_get_part_info(dev_desc, name, info); if (ret < 0) { /* strlen("fastboot_partition_alias_") + PART_NAME_LEN + 1 */ char env_alias_name[25 + PART_NAME_LEN + 1]; @@ -92,8 +117,8 @@ static int part_get_info_by_name_or_alias(struct blk_desc *dev_desc, strncat(env_alias_name, name, PART_NAME_LEN); aliased_part_name = env_get(env_alias_name); if (aliased_part_name != NULL) - ret = part_get_info_by_name(dev_desc, - aliased_part_name, info); + ret = do_get_part_info(dev_desc, aliased_part_name, + info); } return ret; } @@ -430,27 +455,49 @@ int fastboot_mmc_get_part_info(const char *part_name, struct blk_desc **dev_desc, struct disk_partition *part_info, char *response) { - int r = 0; + int ret;
- *dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); - if (!*dev_desc) { - fastboot_fail("block device not found", response); - return -ENOENT; - } if (!part_name || !strcmp(part_name, "")) { fastboot_fail("partition not given", response); return -ENOENT; }
- if (raw_part_get_info_by_name(*dev_desc, part_name, part_info) < 0) { - r = part_get_info_by_name_or_alias(*dev_desc, part_name, part_info); - if (r < 0) { - fastboot_fail("partition not found", response); - return r; + ret = part_get_info_by_name_or_alias(dev_desc, part_name, part_info); + if (ret < 0) { + switch (ret) { + case -ENOSYS: + case -EINVAL: + fastboot_fail("invalid partition or device", response); + break; + case -ENODEV: + fastboot_fail("no such device", response); + break; + case -ENOENT: + fastboot_fail("no such partition", response); + break; + case -EPROTONOSUPPORT: + fastboot_fail("unknown partition table type", response); + break; + default: + fastboot_fail("unanticipated error", response); + break; } }
- return r; + return ret; +} + +static struct blk_desc *fastboot_mmc_get_dev(char *response) +{ + struct blk_desc *ret = blk_get_dev("mmc", + CONFIG_FASTBOOT_FLASH_MMC_DEV); + + if (!ret || ret->type == DEV_TYPE_UNKNOWN) { + pr_err("invalid mmc device\n"); + fastboot_fail("invalid mmc device", response); + return NULL; + } + return ret; }
/** @@ -467,22 +514,19 @@ void fastboot_mmc_flash_write(const char *cmd, void *download_buffer, struct blk_desc *dev_desc; struct disk_partition info;
- dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); - if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { - pr_err("invalid mmc device\n"); - fastboot_fail("invalid mmc device", response); - return; - } - #ifdef CONFIG_FASTBOOT_MMC_BOOT_SUPPORT if (strcmp(cmd, CONFIG_FASTBOOT_MMC_BOOT1_NAME) == 0) { - fb_mmc_boot_ops(dev_desc, download_buffer, 1, - download_bytes, response); + dev_desc = fastboot_mmc_get_dev(response); + if (dev_desc) + fb_mmc_boot_ops(dev_desc, download_buffer, 1, + download_bytes, response); return; } if (strcmp(cmd, CONFIG_FASTBOOT_MMC_BOOT2_NAME) == 0) { - fb_mmc_boot_ops(dev_desc, download_buffer, 2, - download_bytes, response); + dev_desc = fastboot_mmc_get_dev(response); + if (dev_desc) + fb_mmc_boot_ops(dev_desc, download_buffer, 1, + download_bytes, response); return; } #endif @@ -494,6 +538,10 @@ void fastboot_mmc_flash_write(const char *cmd, void *download_buffer, if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0 || strcmp(cmd, CONFIG_FASTBOOT_MMC_USER_NAME) == 0) { #endif + dev_desc = fastboot_mmc_get_dev(response); + if (!dev_desc) + return; + printf("%s: updating MBR, Primary and Backup GPT(s)\n", __func__); if (is_valid_gpt_buf(dev_desc, download_buffer)) { @@ -517,6 +565,10 @@ void fastboot_mmc_flash_write(const char *cmd, void *download_buffer,
#if CONFIG_IS_ENABLED(DOS_PARTITION) if (strcmp(cmd, CONFIG_FASTBOOT_MBR_NAME) == 0) { + dev_desc = fastboot_mmc_get_dev(response); + if (!dev_desc) + return; + printf("%s: updating MBR\n", __func__); if (is_valid_dos_buf(download_buffer)) { printf("%s: invalid MBR - refusing to write to flash\n", @@ -539,19 +591,16 @@ void fastboot_mmc_flash_write(const char *cmd, void *download_buffer,
#ifdef CONFIG_ANDROID_BOOT_IMAGE if (strncasecmp(cmd, "zimage", 6) == 0) { - fb_mmc_update_zimage(dev_desc, download_buffer, - download_bytes, response); + dev_desc = fastboot_mmc_get_dev(response); + if (dev_desc) + fb_mmc_update_zimage(dev_desc, download_buffer, + download_bytes, response); return; } #endif
- if (raw_part_get_info_by_name(dev_desc, cmd, &info) != 0) { - 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", response); - return; - } - } + if (fastboot_mmc_get_part_info(cmd, &dev_desc, &info, response) < 0) + return;
if (is_sparse_image(download_buffer)) { struct fb_mmc_sparse sparse_priv; @@ -594,28 +643,19 @@ void fastboot_mmc_erase(const char *cmd, char *response) lbaint_t blks, blks_start, blks_size, grp_size; struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);
- if (mmc == NULL) { - pr_err("invalid mmc device\n"); - fastboot_fail("invalid mmc device", response); - return; - } - - dev_desc = blk_get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV); - if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) { - pr_err("invalid mmc device\n"); - fastboot_fail("invalid mmc device", response); - return; - } - #ifdef CONFIG_FASTBOOT_MMC_BOOT_SUPPORT if (strcmp(cmd, CONFIG_FASTBOOT_MMC_BOOT1_NAME) == 0) { /* erase EMMC boot1 */ - fb_mmc_boot_ops(dev_desc, NULL, 1, 0, response); + dev_desc = fastboot_mmc_get_dev(response); + if (dev_desc) + fb_mmc_boot_ops(dev_desc, NULL, 1, 0, response); return; } if (strcmp(cmd, CONFIG_FASTBOOT_MMC_BOOT2_NAME) == 0) { /* erase EMMC boot2 */ - fb_mmc_boot_ops(dev_desc, NULL, 2, 0, response); + dev_desc = fastboot_mmc_get_dev(response); + if (dev_desc) + fb_mmc_boot_ops(dev_desc, NULL, 1, 0, response); return; } #endif @@ -623,6 +663,10 @@ void fastboot_mmc_erase(const char *cmd, char *response) #ifdef CONFIG_FASTBOOT_MMC_USER_SUPPORT if (strcmp(cmd, CONFIG_FASTBOOT_MMC_USER_NAME) == 0) { /* erase EMMC userdata */ + dev_desc = fastboot_mmc_get_dev(response); + if (!dev_desc) + return; + if (fb_mmc_erase_mmc_hwpart(dev_desc)) fastboot_fail("Failed to erase EMMC_USER", response); else @@ -631,13 +675,8 @@ void fastboot_mmc_erase(const char *cmd, char *response) } #endif
- if (raw_part_get_info_by_name(dev_desc, cmd, &info) != 0) { - 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", response); - return; - } - } + if (fastboot_mmc_get_part_info(cmd, &dev_desc, &info, response) < 0) + return;
/* Align blocks to erase group size to avoid erasing other partitions */ grp_size = mmc->erase_grp_size; diff --git a/test/dm/fastboot.c b/test/dm/fastboot.c index 8f905d8fa8..e7f8c362b8 100644 --- a/test/dm/fastboot.c +++ b/test/dm/fastboot.c @@ -35,9 +35,12 @@ static int dm_test_fastboot_mmc_part(struct unit_test_state *uts) }, };
- ut_assertok(blk_get_device_by_str("mmc", - __stringify(CONFIG_FASTBOOT_FLASH_MMC_DEV), - &mmc_dev_desc)); + /* + * There are a lot of literal 0s I don't want to have to construct from + * MMC_DEV. + */ + ut_asserteq(0, CONFIG_FASTBOOT_FLASH_MMC_DEV); + ut_assertok(blk_get_device_by_str("mmc", "0", &mmc_dev_desc)); if (CONFIG_IS_ENABLED(RANDOM_UUID)) { gen_rand_uuid_str(parts[0].uuid, UUID_STR_FORMAT_STD); gen_rand_uuid_str(parts[1].uuid, UUID_STR_FORMAT_STD); @@ -59,6 +62,34 @@ static int dm_test_fastboot_mmc_part(struct unit_test_state *uts) &part_info, response)); ut_assertok(env_set(FB_ALIAS_PREFIX "test3", NULL));
+ /* "New" partition labels */ + ut_asserteq(1, fastboot_mmc_get_part_info("#test1", &fb_dev_desc, + &part_info, response)); + ut_asserteq(1, fastboot_mmc_get_part_info("0#test1", &fb_dev_desc, + &part_info, response)); + ut_asserteq(1, fastboot_mmc_get_part_info("0.0#test1", &fb_dev_desc, + &part_info, response)); + ut_asserteq(1, fastboot_mmc_get_part_info("0:1", &fb_dev_desc, + &part_info, response)); + ut_asserteq(1, fastboot_mmc_get_part_info("0.0:1", &fb_dev_desc, + &part_info, response)); + ut_asserteq(1, fastboot_mmc_get_part_info("0", &fb_dev_desc, + &part_info, response)); + ut_asserteq(1, fastboot_mmc_get_part_info("0.0", &fb_dev_desc, + &part_info, response)); + ut_asserteq(0, fastboot_mmc_get_part_info("0:0", &fb_dev_desc, + &part_info, response)); + ut_asserteq(0, fastboot_mmc_get_part_info("0.0:0", &fb_dev_desc, + &part_info, response)); + ut_asserteq(0, fastboot_mmc_get_part_info("1", &fb_dev_desc, + &part_info, response)); + ut_asserteq(0, fastboot_mmc_get_part_info("1.0", &fb_dev_desc, + &part_info, response)); + ut_asserteq(1, fastboot_mmc_get_part_info(":1", &fb_dev_desc, + &part_info, response)); + ut_asserteq(0, fastboot_mmc_get_part_info(":0", &fb_dev_desc, + &part_info, response)); + return 0; } DM_TEST(dm_test_fastboot_mmc_part, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);