Add DFU_SKIP layout ccocept. If layout is "skip", it will be skipped after nothing to do. It's useful to support multiple board with one tar file.
Signed-off-by: Jaehoon Chung jh80.chung@samsung.com Reviewed-by: Minkyu Kang mk7.kang@samsung.com --- V2: Fix typo and Minkyu's reviewed-tag --- doc/README.dfu | 10 +++++++++- drivers/dfu/dfu.c | 2 +- drivers/dfu/dfu_mmc.c | 9 +++++++++ include/dfu.h | 1 + 4 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/doc/README.dfu b/doc/README.dfu index 4b9f88354072..827d300e251f 100644 --- a/doc/README.dfu +++ b/doc/README.dfu @@ -17,7 +17,7 @@ Overview: - The access to mediums is done in DFU backends (driver/dfu)
Today the supported DFU backends are: - - MMC (RAW or FAT / EXT2 / EXT3 / EXT4 file system) + - MMC (RAW or FAT / EXT2 / EXT3 / EXT4 file system / SKIP) - NAND - RAM - SF (serial flash) @@ -91,6 +91,7 @@ Commands: <name> part <dev> <part_id> [mmcpart <num>] raw access to partition <name> fat <dev> <part_id> [mmcpart <num>] file in FAT partition <name> ext4 <dev> <part_id> [mmcpart <num>] file in EXT4 partition + <name> skip 0 0 Skip after Nothing to do
with <partid> being the GPT or DOS partition index, with <num> being the eMMC hardware partition number. @@ -103,6 +104,13 @@ Commands:
"u-boot raw 0x80 0x800;uImage ext4 0 2"
+ If don't want to flash image file to storage, use "skip" layout. + - It can be protected to flash wrong image with specific board name. + - Especailly, this layout will be useful when thor protocol is used. + For example, if make a tar file to support two board with u-boot-<board1>.bin + and u-boot-<board2>.bin, it can make to flash a proper u-boot without fail. + "u-boot-<board1>.bin raw 0x80 0x800; u-boot-<board2>.bin skip 0 0" + "nand" (raw slc nand device) cmd: dfu 0 nand <dev> each element in "dfu_alt_info" = diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index a298c2c43999..f679f1fa5fe5 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -614,7 +614,7 @@ const char *dfu_get_dev_type(enum dfu_device_type t) const char *dfu_get_layout(enum dfu_layout l) { const char *const dfu_layout[] = {NULL, "RAW_ADDR", "FAT", "EXT2", - "EXT3", "EXT4", "RAM_ADDR" }; + "EXT3", "EXT4", "RAM_ADDR", "SKIP" }; return dfu_layout[l]; }
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index 691d01c7ebdf..c7c324b0a986 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -108,6 +108,8 @@ static int mmc_file_op(enum dfu_op op, struct dfu_entity *dfu, case DFU_FS_EXT4: fstype = FS_TYPE_EXT; break; + case DFU_SKIP: + return 0; default: printf("%s: Layout (%s) not (yet) supported!\n", __func__, dfu_get_layout(dfu->layout)); @@ -204,6 +206,9 @@ int dfu_write_medium_mmc(struct dfu_entity *dfu, case DFU_FS_EXT4: ret = mmc_file_buf_write(dfu, offset, buf, len); break; + case DFU_SKIP: + ret = 0; + break; default: printf("%s: Layout (%s) not (yet) supported!\n", __func__, dfu_get_layout(dfu->layout)); @@ -238,6 +243,8 @@ int dfu_get_medium_size_mmc(struct dfu_entity *dfu, u64 *size) if (ret < 0) return ret; return 0; + case DFU_SKIP: + return 0; default: printf("%s: Layout (%s) not (yet) supported!\n", __func__, dfu_get_layout(dfu->layout)); @@ -399,6 +406,8 @@ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s) dfu->layout = DFU_FS_FAT; } else if (!strcmp(entity_type, "ext4")) { dfu->layout = DFU_FS_EXT4; + } else if (!strcmp(entity_type, "skip")) { + dfu->layout = DFU_SKIP; } else { pr_err("Memory layout (%s) not supported!\n", entity_type); return -ENODEV; diff --git a/include/dfu.h b/include/dfu.h index 84abdc79acd1..2e8276c69c9f 100644 --- a/include/dfu.h +++ b/include/dfu.h @@ -33,6 +33,7 @@ enum dfu_layout { DFU_FS_EXT3, DFU_FS_EXT4, DFU_RAM_ADDR, + DFU_SKIP, };
enum dfu_op {