ext4fs write support
Signed-off-by: Uma Shankar <uma.shankar@samsung.com>
Signed-off-by: Manjunatha C Achar <a.manjunatha@samsung.com>
Signed-off-by: Iqbal Shareef <iqbal.ams@samsung.com>
Signed-off-by: Hakgoo Lee <goodguy.lee@samsung.com>
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 @@
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"
