diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/cmd_ext4.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/common/cmd_ext4.c b/common/cmd_ext4.c index 3298fee..77094c4 100644 --- a/common/cmd_ext4.c +++ b/common/cmd_ext4.c @@ -62,6 +62,10 @@ uint64_t total_sector; uint64_t part_offset; +#if defined(CONFIG_CMD_EXT4_WRITE) +static uint64_t part_size; +static uint16_t cur_part = 1; +#endif #define DOS_PART_MAGIC_OFFSET 0x1fe #define DOS_FS_TYPE_OFFSET 0x36 @@ -84,6 +88,143 @@ int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) return 0; } +#if defined(CONFIG_CMD_EXT4_WRITE) +static int ext4_register_device(block_dev_desc_t *dev_desc, int part_no) +{ + unsigned char buffer[SECTOR_SIZE]; + disk_partition_t info; + + if (!dev_desc->block_read) + return -1; + + /* check if we have a MBR (on floppies we have only a PBR) */ + if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1) { + printf("** Can't read from device %d **\n", dev_desc->dev); + return -1; + } + if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 || + buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) { + /* no signature found */ + return -1; + } + + /* First we assume there is a MBR */ + if (!get_partition_info(dev_desc, part_no, &info)) { + part_offset = info.start; + cur_part = part_no; + part_size = info.size; + } else if ((strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET], + "FAT", 3) == 0) || (strncmp((char *)&buffer + [DOS_FS32_TYPE_OFFSET], + "FAT32", 5) == 0)) { + /* ok, we assume we are on a PBR only */ + cur_part = 1; + part_offset = 0; + } else { + printf("** Partition %d not valid on device %d **\n", + part_no, dev_desc->dev); + return -1; + } + + return 0; +} + +int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc, + char *const argv[]) +{ + const char *filename = "/"; + int part_length; + unsigned long part = 1; + int dev; + char *ep; + unsigned long ram_address; + unsigned long file_size; + disk_partition_t info; + struct ext_filesystem *fs; + + if (argc < 6) + return cmd_usage(cmdtp); + + dev = (int)simple_strtoul(argv[2], &ep, 16); + ext4_dev_desc = get_dev(argv[1], dev); + if (ext4_dev_desc == NULL) { + printf("Block device %s %d not supported\n", argv[1], dev); + return 1; + } + if (init_fs(ext4_dev_desc)) + return 1; + + fs = get_fs(); + if (*ep) { + if (*ep != ':') { + puts("Invalid boot device, use `dev[:part]'\n"); + goto fail; + } + part = simple_strtoul(++ep, NULL, 16); + } + + /* get the filename */ + filename = argv[3]; + + /* get the address in hexadecimal format (string to int) */ + ram_address = simple_strtoul(argv[4], NULL, 16); + + /* get the filesize in base 10 format */ + file_size = simple_strtoul(argv[5], NULL, 10); + + /* set the device as block device */ + part_length = ext4fs_set_blk_dev(fs->dev_desc, part); + if (part_length == 0) { + printf("Bad partition - %s %d:%lu\n", argv[1], dev, part); + goto fail; + } + + /* register the device and partition */ + if (ext4_register_device(fs->dev_desc, part) != 0) { + printf("Unable to use %s %d:%lu for fattable\n", + argv[1], dev, part); + goto fail; + } + + /* get the partition information */ + if (!get_partition_info(fs->dev_desc, part, &info)) { + total_sector = (info.size * info.blksz) / SECTOR_SIZE; + fs->total_sect = total_sector; + } else { + printf("error : get partition info\n"); + goto fail; + } + + /* mount the filesystem */ + if (!ext4fs_mount(part_length)) { + printf("Bad ext4 partition %s %d:%lu\n", argv[1], dev, part); + goto fail; + } + + /* start write */ + if (ext4fs_write(filename, (unsigned char *)ram_address, file_size)) { + printf("** Error ext4fs_write() **\n"); + goto fail; + } + ext4fs_close(); + deinit_fs(fs->dev_desc); + + return 0; + +fail: + ext4fs_close(); + deinit_fs(fs->dev_desc); + + return 1; +} + +U_BOOT_CMD(ext4write, 6, 1, do_ext4_write, + "create a file in the root directory", + "<interface> <dev[:part]> [Absolute filename path] [Address] [sizebytes]\n" + " - create a file in / directory"); + +#endif + U_BOOT_CMD(ext4ls, 4, 1, do_ext4_ls, "list files in a directory (default /)", "<interface> <dev[:part]> [directory]\n" |