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cmd: mmc: display write protect state of boot partition

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Boot partitions of eMMC devices can be power on or permanently write
protected. Let the 'mmc info' command display the protection state.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-03-30 07:24:18 +02:00 committed by Peng Fan
parent 1601ea2126
commit d5210e4589
1 changed files with 24 additions and 0 deletions
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24
cmd/mmc.c
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@ -54,6 +54,8 @@ static void print_mmcinfo(struct mmc *mmc)
if (!IS_SD(mmc) && mmc->version >= MMC_VERSION_4_41) {
bool has_enh = (mmc->part_support & ENHNCD_SUPPORT) != 0;
bool usr_enh = has_enh && (mmc->part_attr & EXT_CSD_ENH_USR);
u8 wp, ext_csd[MMC_MAX_BLOCK_LEN];
int ret;
#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING)
puts("HC WP Group Size: ");
@ -90,6 +92,28 @@ static void print_mmcinfo(struct mmc *mmc)
putc('\n');
}
}
ret = mmc_send_ext_csd(mmc, ext_csd);
if (ret)
return;
wp = ext_csd[EXT_CSD_BOOT_WP_STATUS];
for (i = 0; i < 2; ++i) {
printf("Boot area %d is ", i);
switch (wp & 3) {
case 0:
printf("not write protected\n");
break;
case 1:
printf("power on protected\n");
break;
case 2:
printf("permanently protected\n");
break;
default:
printf("in reserved protection state\n");
break;
}
wp >>= 2;
}
}
}
static struct mmc *init_mmc_device(int dev, bool force_init)