Hi,
On 3/30/20 2:24 PM, Heinrich Schuchardt wrote:
> 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.g...@gmx.de>
> ---
> cmd/mmc.c | 24 ++++++++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/cmd/mmc.c b/cmd/mmc.c
> index 6f3cb85cc0..d62c85e439 100644
> --- a/cmd/mmc.c
> +++ b/cmd/mmc.c
> @@ -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;
Is it really needed to call mmc_send_ext_csd() at here.
ext_csd register value was already read somewhere.
Best Regards,
Jaehoon Chung
> + 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)
> --
> 2.25.1
>
>
>
