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| author | Lei Wen <leiwen@marvell.com> | 2011-06-22 17:03:31 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2011-07-15 20:29:17 -0500 |
| commit | e6f99a5611e1ff59555f93de88e527070f8548af (patch) | |
| tree | 77577e3a0f6db5f84f2d9d879e9abfc221685c69 /common/cmd_mmc.c | |
| parent | 6be95ccf9ff52d629526d1c20c5343c2a91d9e72 (diff) | |
| download | u-boot-imx-e6f99a5611e1ff59555f93de88e527070f8548af.zip u-boot-imx-e6f99a5611e1ff59555f93de88e527070f8548af.tar.gz u-boot-imx-e6f99a5611e1ff59555f93de88e527070f8548af.tar.bz2 | |
MMC: add erase function to both mmc and sd
Erase is a very basic function since the begin of sd specification is
announced. Although we could write a bulk of full 0xff memory to the
range to take place of erase, it is more convenient and safe to
implement the erase function itself.
Signed-off-by: Lei Wen <leiwen@marvell.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'common/cmd_mmc.c')
| -rw-r--r-- | common/cmd_mmc.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/common/cmd_mmc.c b/common/cmd_mmc.c index a645803..7335cdc 100644 --- a/common/cmd_mmc.c +++ b/common/cmd_mmc.c @@ -91,6 +91,7 @@ enum mmc_state { MMC_INVALID, MMC_READ, MMC_WRITE, + MMC_ERASE, }; static void print_mmcinfo(struct mmc *mmc) { @@ -252,15 +253,24 @@ int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) state = MMC_READ; else if (strcmp(argv[1], "write") == 0) state = MMC_WRITE; + else if (strcmp(argv[1], "erase") == 0) + state = MMC_ERASE; else state = MMC_INVALID; if (state != MMC_INVALID) { struct mmc *mmc = find_mmc_device(curr_device); - void *addr = (void *)simple_strtoul(argv[2], NULL, 16); - u32 blk = simple_strtoul(argv[3], NULL, 16); - u32 cnt = simple_strtoul(argv[4], NULL, 16); - u32 n; + int idx = 2; + u32 blk, cnt, n; + void *addr; + + if (state != MMC_ERASE) { + addr = (void *)simple_strtoul(argv[idx], NULL, 16); + ++idx; + } else + addr = 0; + blk = simple_strtoul(argv[idx], NULL, 16); + cnt = simple_strtoul(argv[idx + 1], NULL, 16); if (!mmc) { printf("no mmc device at slot %x\n", curr_device); @@ -283,6 +293,9 @@ int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) n = mmc->block_dev.block_write(curr_device, blk, cnt, addr); break; + case MMC_ERASE: + n = mmc->block_dev.block_erase(curr_device, blk, cnt); + break; default: BUG(); } @@ -300,6 +313,7 @@ U_BOOT_CMD( "MMC sub system", "read addr blk# cnt\n" "mmc write addr blk# cnt\n" + "mmc erase blk# cnt\n" "mmc rescan\n" "mmc part - lists available partition on current mmc device\n" "mmc dev [dev] [part] - show or set current mmc device [partition]\n" |