diff options
| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-03-30 07:24:18 +0200 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2020-04-22 20:41:55 +0800 |
| commit | d5210e4589294b4c356e7c2ac598cda8d738aec8 (patch) | |
| tree | ee13f4649420dc81bb3a90a4943bf5bbe2f44d5f /cmd/mmc.c | |
| parent | 1601ea212623c9bdb479636bec9e7299b0cb14dd (diff) | |
cmd: mmc: display write protect state of boot partition
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>
Diffstat (limited to 'cmd/mmc.c')
| -rw-r--r-- | cmd/mmc.c | 24 |
1 files changed, 24 insertions, 0 deletions
@@ -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) |