diff options
author | Henrik Nordström <henrik@henriknordstrom.net> | 2013-11-10 10:26:56 -0700 |
---|---|---|
committer | Simon Glass <sjg@chromium.org> | 2014-01-08 17:24:03 -0700 |
commit | f4d8de48f5a2aa1885daa0d425b8c0568a2ccb69 (patch) | |
tree | d86aea3653bfff137f2a94bea66d5fbddcb59853 /common/cmd_sandbox.c | |
parent | 60d18d3fe9d1a5db663711063cd0d5c915af377a (diff) |
sandbox: block driver using host file/device as backing store
Provide a way to use any host file or device as a block device in U-Boot.
This can be used to provide filesystem access within U-Boot to an ext2
image file on the host, for example.
The support is plumbed into the filesystem and partition interfaces.
We don't want to print a message in the driver every time we find a missing
device. Pass the information back to the caller where a message can be printed
if desired.
Signed-off-by: Henrik Nordström <henrik@henriknordstrom.net>
Signed-off-by: Simon Glass <sjg@chromium.org>
- Removed change to part.c get_device_and_partition()
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/cmd_sandbox.c')
-rw-r--r-- | common/cmd_sandbox.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/common/cmd_sandbox.c b/common/cmd_sandbox.c index 8d59364b63..00982b164d 100644 --- a/common/cmd_sandbox.c +++ b/common/cmd_sandbox.c @@ -6,6 +6,9 @@ #include <common.h> #include <fs.h> +#include <part.h> +#include <sandboxblockdev.h> +#include <asm/errno.h> static int do_sandbox_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) @@ -25,10 +28,69 @@ static int do_sandbox_save(cmd_tbl_t *cmdtp, int flag, int argc, return do_save(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX); } +static int do_sandbox_bind(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + if (argc < 2 || argc > 3) + return CMD_RET_USAGE; + char *ep; + char *dev_str = argv[1]; + char *file = argc >= 3 ? argv[2] : NULL; + int dev = simple_strtoul(dev_str, &ep, 16); + if (*ep) { + printf("** Bad device specification %s **\n", dev_str); + return CMD_RET_USAGE; + } + return host_dev_bind(dev, file); +} + +static int do_sandbox_info(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + if (argc < 1 || argc > 2) + return CMD_RET_USAGE; + int min_dev = 0; + int max_dev = CONFIG_HOST_MAX_DEVICES - 1; + if (argc >= 2) { + char *ep; + char *dev_str = argv[1]; + int dev = simple_strtoul(dev_str, &ep, 16); + if (*ep) { + printf("** Bad device specification %s **\n", dev_str); + return CMD_RET_USAGE; + } + min_dev = dev; + max_dev = dev; + } + int dev; + printf("%3s %12s %s\n", "dev", "blocks", "path"); + for (dev = min_dev; dev <= max_dev; dev++) { + block_dev_desc_t *blk_dev; + int ret; + + printf("%3d ", dev); + ret = host_get_dev_err(dev, &blk_dev); + if (ret) { + if (ret == -ENOENT) + puts("Not bound to a backing file\n"); + else if (ret == -ENODEV) + puts("Invalid host device number\n"); + + continue; + } + struct host_block_dev *host_dev = blk_dev->priv; + printf("%12lu %s\n", (unsigned long)blk_dev->lba, + host_dev->filename); + } + return 0; +} + static cmd_tbl_t cmd_sandbox_sub[] = { U_BOOT_CMD_MKENT(load, 7, 0, do_sandbox_load, "", ""), U_BOOT_CMD_MKENT(ls, 3, 0, do_sandbox_ls, "", ""), U_BOOT_CMD_MKENT(save, 6, 0, do_sandbox_save, "", ""), + U_BOOT_CMD_MKENT(bind, 3, 0, do_sandbox_bind, "", ""), + U_BOOT_CMD_MKENT(info, 3, 0, do_sandbox_info, "", ""), }; static int do_sandbox(cmd_tbl_t *cmdtp, int flag, int argc, @@ -57,4 +119,6 @@ U_BOOT_CMD( "sb ls host <filename> - list files on host\n" "sb save host <dev> <filename> <addr> <bytes> [<offset>] - " "save a file to host\n" + "sb bind <dev> [<filename>] - bind \"host\" device to file\n" + "sb info [<dev>] - show device binding & info" ); |