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| author | Heinrich Schuchardt <xypron.glpk@gmx.de> | 2020-03-30 07:24:19 +0200 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2020-04-22 20:41:55 +0800 |
| commit | 0469d846364ae54fc380a813cc4c3e9e19bdc99a (patch) | |
| tree | d93f62a4625b8d53415ea44ced16b04e214674f2 /cmd/mmc.c | |
| parent | d5210e4589294b4c356e7c2ac598cda8d738aec8 (diff) | |
| download | u-boot-0469d846364ae54fc380a813cc4c3e9e19bdc99a.zip u-boot-0469d846364ae54fc380a813cc4c3e9e19bdc99a.tar.gz u-boot-0469d846364ae54fc380a813cc4c3e9e19bdc99a.tar.bz2 | |
cmd: mmc: provide boot area protection command
Provide command 'mmc wp' to power on write protect boot areas on eMMC
devices.
The B_PWR_WP_EN bit in the extended CSD register BOOT_WP is set. The boot
area are write protected until the next power cycle occurs.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Diffstat (limited to 'cmd/mmc.c')
| -rw-r--r-- | cmd/mmc.c | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -896,9 +896,30 @@ static int do_mmc_bkops_enable(cmd_tbl_t *cmdtp, int flag, } #endif +static int do_mmc_boot_wp(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + int err; + struct mmc *mmc; + + mmc = init_mmc_device(curr_device, false); + if (!mmc) + return CMD_RET_FAILURE; + if (IS_SD(mmc)) { + printf("It is not an eMMC device\n"); + return CMD_RET_FAILURE; + } + err = mmc_boot_wp(mmc); + if (err) + return CMD_RET_FAILURE; + printf("boot areas protected\n"); + return CMD_RET_SUCCESS; +} + static cmd_tbl_t cmd_mmc[] = { U_BOOT_CMD_MKENT(info, 1, 0, do_mmcinfo, "", ""), U_BOOT_CMD_MKENT(read, 4, 1, do_mmc_read, "", ""), + U_BOOT_CMD_MKENT(wp, 1, 0, do_mmc_boot_wp, "", ""), #if CONFIG_IS_ENABLED(MMC_WRITE) U_BOOT_CMD_MKENT(write, 4, 0, do_mmc_write, "", ""), U_BOOT_CMD_MKENT(erase, 3, 0, do_mmc_erase, "", ""), @@ -968,6 +989,7 @@ U_BOOT_CMD( "mmc part - lists available partition on current mmc device\n" "mmc dev [dev] [part] - show or set current mmc device [partition]\n" "mmc list - lists available devices\n" + "mmc wp - power on write protect booot partitions\n" #if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) "mmc hwpartition [args...] - does hardware partitioning\n" " arguments (sizes in 512-byte blocks):\n" |