diff options
Diffstat (limited to 'drivers/dfu/dfu_mmc.c')
| -rw-r--r-- | drivers/dfu/dfu_mmc.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/drivers/dfu/dfu_mmc.c b/drivers/dfu/dfu_mmc.c new file mode 100644 index 0000000..5d504df --- /dev/null +++ b/drivers/dfu/dfu_mmc.c @@ -0,0 +1,182 @@ +/* + * dfu.c -- DFU back-end routines + * + * Copyright (C) 2012 Samsung Electronics + * author: Lukasz Majewski <l.majewski@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <common.h> +#include <malloc.h> +#include <dfu.h> + +enum dfu_mmc_op { + DFU_OP_READ = 1, + DFU_OP_WRITE, +}; + +static int mmc_block_op(enum dfu_mmc_op op, struct dfu_entity *dfu, + void *buf, long *len) +{ + char cmd_buf[DFU_CMD_BUF_SIZE]; + + sprintf(cmd_buf, "mmc %s 0x%x %x %x", + op == DFU_OP_READ ? "read" : "write", + (unsigned int) buf, + dfu->data.mmc.lba_start, + dfu->data.mmc.lba_size); + + if (op == DFU_OP_READ) + *len = dfu->data.mmc.lba_blk_size * dfu->data.mmc.lba_size; + + debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf); + return run_command(cmd_buf, 0); +} + +static inline int mmc_block_write(struct dfu_entity *dfu, void *buf, long *len) +{ + return mmc_block_op(DFU_OP_WRITE, dfu, buf, len); +} + +static inline int mmc_block_read(struct dfu_entity *dfu, void *buf, long *len) +{ + return mmc_block_op(DFU_OP_READ, dfu, buf, len); +} + +static int mmc_file_op(enum dfu_mmc_op op, struct dfu_entity *dfu, + void *buf, long *len) +{ + char cmd_buf[DFU_CMD_BUF_SIZE]; + char *str_env; + int ret; + + switch (dfu->layout) { + case DFU_FS_FAT: + sprintf(cmd_buf, "fat%s mmc %d:%d 0x%x %s %lx", + op == DFU_OP_READ ? "load" : "write", + dfu->data.mmc.dev, dfu->data.mmc.part, + (unsigned int) buf, dfu->name, *len); + break; + case DFU_FS_EXT4: + sprintf(cmd_buf, "ext4%s mmc %d:%d /%s 0x%x %ld", + op == DFU_OP_READ ? "load" : "write", + dfu->data.mmc.dev, dfu->data.mmc.part, + dfu->name, (unsigned int) buf, *len); + break; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + } + + debug("%s: %s 0x%p\n", __func__, cmd_buf, cmd_buf); + + ret = run_command(cmd_buf, 0); + if (ret) { + puts("dfu: Read error!\n"); + return ret; + } + + if (dfu->layout != DFU_RAW_ADDR && op == DFU_OP_READ) { + str_env = getenv("filesize"); + if (str_env == NULL) { + puts("dfu: Wrong file size!\n"); + return -1; + } + *len = simple_strtoul(str_env, NULL, 16); + } + + return ret; +} + +static inline int mmc_file_write(struct dfu_entity *dfu, void *buf, long *len) +{ + return mmc_file_op(DFU_OP_WRITE, dfu, buf, len); +} + +static inline int mmc_file_read(struct dfu_entity *dfu, void *buf, long *len) +{ + return mmc_file_op(DFU_OP_READ, dfu, buf, len); +} + +int dfu_write_medium_mmc(struct dfu_entity *dfu, void *buf, long *len) +{ + int ret = -1; + + switch (dfu->layout) { + case DFU_RAW_ADDR: + ret = mmc_block_write(dfu, buf, len); + break; + case DFU_FS_FAT: + case DFU_FS_EXT4: + ret = mmc_file_write(dfu, buf, len); + break; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + } + + return ret; +} + +int dfu_read_medium_mmc(struct dfu_entity *dfu, void *buf, long *len) +{ + int ret = -1; + + switch (dfu->layout) { + case DFU_RAW_ADDR: + ret = mmc_block_read(dfu, buf, len); + break; + case DFU_FS_FAT: + case DFU_FS_EXT4: + ret = mmc_file_read(dfu, buf, len); + break; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + } + + return ret; +} + +int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *s) +{ + char *st; + + 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 { + printf("%s: Memory layout (%s) not supported!\n", __func__, st); + } + + 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); + } + + dfu->read_medium = dfu_read_medium_mmc; + dfu->write_medium = dfu_write_medium_mmc; + + return 0; +} |