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cmd: mmc: Allow using partition name in mmc erase command

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The mmc erase command currently requires blk# and cnt parameters
which can be obtained using the part start and part size commands
if the entire partition needs to be erased.

Simplify the use of the mmc erase command by allowing the partition
name to be specified directly.

Signed-off-by: Tomas Paukrt <tomaspaukrt@email.cz>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
This commit is contained in:
Tomas Paukrt
2024-09-02 20:49:17 +02:00
committed by Tom Rini
parent 39aa94a5c3
commit 6c0943ff54
2 changed files with 18 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
cmd/mmc.c
View File

@@ -473,18 +473,26 @@ static int do_mmc_erase(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct mmc *mmc;
struct disk_partition info;
u32 blk, cnt, n;
if (argc != 3)
if (argc < 2 || argc > 3)
return CMD_RET_USAGE;
blk = hextoul(argv[1], NULL);
cnt = hextoul(argv[2], NULL);
mmc = init_mmc_device(curr_device, false);
if (!mmc)
return CMD_RET_FAILURE;
if (argc == 3) {
blk = hextoul(argv[1], NULL);
cnt = hextoul(argv[2], NULL);
} else if (part_get_info_by_name(mmc_get_blk_desc(mmc), argv[1], &info) >= 0) {
blk = info.start;
cnt = info.size;
} else {
return CMD_RET_FAILURE;
}
printf("MMC erase: dev # %d, block # %d, count %d ... ",
curr_device, blk, cnt);
@@ -1290,6 +1298,7 @@ U_BOOT_CMD(
"mmc swrite addr blk#\n"
#endif
"mmc erase blk# cnt\n"
"mmc erase partname\n"
"mmc rescan [mode]\n"
"mmc part - lists available partition on current mmc device\n"
"mmc dev [dev] [part] [mode] - show or set current mmc device [partition] and set mode\n"

6
doc/usage/cmd/mmc.rst
View File

@@ -15,6 +15,7 @@ Synopsis
mmc read addr blk# cnt
mmc write addr blk# cnt
mmc erase blk# cnt
mmc erase partname
mmc rescan [mode]
mmc part
mmc dev [dev] [part] [mode]
@@ -44,12 +45,15 @@ The 'mmc write' command writes raw data to MMC device from memory address with b
cnt
block count
The 'mmc erase' command erases *cnt* blocks on the MMC device starting at block *blk#*.
The 'mmc erase' command erases *cnt* blocks on the MMC device starting at block *blk#* or
the entire partition specified by *partname*.
blk#
start block offset
cnt
block count
partname
partition name
The 'mmc rescan' command scans the available MMC device.