From: Mateusz Zalega Date: Mon, 28 Apr 2014 19:13:24 +0000 (+0200) Subject: dfu: mmc: raw data write fix X-Git-Tag: v2014.07-rc1~8^2~6 X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=711b931f90e44ff1248cd73c15f64485470d86ff;p=u-boot dfu: mmc: raw data write fix When user attempted to perform a raw write using DFU (vide dfu_fill_entity_mmc) with MMC interface not initialized before, get_mmc_blk_size() reported invalid (zero) block size - it wasn't possible to write ie. a new u-boot image. This commit fixes that by initializing MMC device before use in dfu_fill_entity_mmc(). While fixing initialization sequence, I had to change about half of dfu_fill_entity_mmc's body, so I refactored it on the way to make it, IMHO, considerably more comprehensible. Being left as dead code, get_mmc_blk_size() was removed. Tested on Samsung Goni. Signed-off-by: Mateusz Zalega Signed-off-by: Kyungmin Park Acked-by: Lukasz Majewski Acked-by: Tom Rini Cc: Minkyu Kang --- diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c index 651cfff5b3..b41785dfc7 100644 --- a/drivers/dfu/dfu_mmc.c +++ b/drivers/dfu/dfu_mmc.c @@ -184,66 +184,91 @@ int dfu_read_medium_mmc(struct dfu_entity *dfu, u64 offset, void *buf, return ret; } +/* + * @param s Parameter string containing space-separated arguments: + * 1st: + * raw (raw read/write) + * fat (files) + * ext4 (^) + * part (partition image) + * 2nd and 3rd: + * lba_start and lba_size, for raw write + * mmc_dev and mmc_part, for filesystems and part + */ int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s) { - int dev, part; - struct mmc *mmc; - block_dev_desc_t *blk_dev; - disk_partition_t partinfo; - char *st; + const char *entity_type; + size_t second_arg; + size_t third_arg; - dfu->dev_type = DFU_DEV_MMC; - st = strsep(&s, " "); - if (!strcmp(st, "mmc")) { - dfu->layout = DFU_RAW_ADDR; - dfu->data.mmc.lba_start = simple_strtoul(s, &s, 16); - dfu->data.mmc.lba_size = simple_strtoul(++s, &s, 16); - dfu->data.mmc.lba_blk_size = get_mmc_blk_size(dfu->dev_num); - } else if (!strcmp(st, "fat")) { - dfu->layout = DFU_FS_FAT; - } else if (!strcmp(st, "ext4")) { - dfu->layout = DFU_FS_EXT4; - } else if (!strcmp(st, "part")) { - - dfu->layout = DFU_RAW_ADDR; + struct mmc *mmc; - dev = simple_strtoul(s, &s, 10); - s++; - part = simple_strtoul(s, &s, 10); + const char *argv[3]; + const char **parg = argv; - mmc = find_mmc_device(dev); - if (mmc == NULL || mmc_init(mmc)) { - printf("%s: could not find mmc device #%d!\n", - __func__, dev); + for (; parg < argv + sizeof(argv) / sizeof(*argv); ++parg) { + *parg = strsep(&s, " "); + if (*parg == NULL) { + error("Invalid number of arguments.\n"); return -ENODEV; } + } - blk_dev = &mmc->block_dev; - if (get_partition_info(blk_dev, part, &partinfo) != 0) { - printf("%s: could not find partition #%d on mmc device #%d!\n", - __func__, part, dev); + entity_type = argv[0]; + second_arg = simple_strtoul(argv[1], NULL, 16); + third_arg = simple_strtoul(argv[2], NULL, 16); + + mmc = find_mmc_device(dfu->dev_num); + if (mmc == NULL) { + error("Couldn't find MMC device no. %d.\n", dfu->dev_num); + return -ENODEV; + } + + if (mmc_init(mmc)) { + error("Couldn't init MMC device.\n"); + return -ENODEV; + } + + if (!strcmp(entity_type, "raw")) { + dfu->layout = DFU_RAW_ADDR; + dfu->data.mmc.lba_start = second_arg; + dfu->data.mmc.lba_size = third_arg; + dfu->data.mmc.lba_blk_size = mmc->read_bl_len; + } else if (!strcmp(entity_type, "part")) { + disk_partition_t partinfo; + block_dev_desc_t *blk_dev = &mmc->block_dev; + int mmcdev = second_arg; + int mmcpart = third_arg; + + if (get_partition_info(blk_dev, mmcpart, &partinfo) != 0) { + error("Couldn't find part #%d on mmc device #%d\n", + mmcpart, mmcdev); return -ENODEV; } - dfu->data.mmc.lba_start = partinfo.start; - dfu->data.mmc.lba_size = partinfo.size; - dfu->data.mmc.lba_blk_size = partinfo.blksz; - + dfu->layout = DFU_RAW_ADDR; + dfu->data.mmc.lba_start = partinfo.start; + dfu->data.mmc.lba_size = partinfo.size; + dfu->data.mmc.lba_blk_size = partinfo.blksz; + } else if (!strcmp(entity_type, "fat")) { + dfu->layout = DFU_FS_FAT; + } else if (!strcmp(entity_type, "ext4")) { + dfu->layout = DFU_FS_EXT4; } else { - printf("%s: Memory layout (%s) not supported!\n", __func__, st); + error("Memory layout (%s) not supported!\n", entity_type); return -ENODEV; } - if (dfu->layout == DFU_FS_EXT4 || dfu->layout == DFU_FS_FAT) { - dfu->data.mmc.dev = simple_strtoul(s, &s, 10); - dfu->data.mmc.part = simple_strtoul(++s, &s, 10); + /* if it's NOT a raw write */ + if (strcmp(entity_type, "raw")) { + dfu->data.mmc.dev = second_arg; + dfu->data.mmc.part = third_arg; } + dfu->dev_type = DFU_DEV_MMC; dfu->read_medium = dfu_read_medium_mmc; dfu->write_medium = dfu_write_medium_mmc; dfu->flush_medium = dfu_flush_medium_mmc; - - /* initial state */ dfu->inited = 0; return 0; diff --git a/include/dfu.h b/include/dfu.h index 6c71ecbe35..dcd3215d06 100644 --- a/include/dfu.h +++ b/include/dfu.h @@ -64,11 +64,6 @@ struct ram_internal_data { unsigned int size; }; -static inline unsigned int get_mmc_blk_size(int dev) -{ - return find_mmc_device(dev)->read_bl_len; -} - #define DFU_NAME_SIZE 32 #define DFU_CMD_BUF_SIZE 128 #ifndef CONFIG_SYS_DFU_DATA_BUF_SIZE