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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 /drivers/mmc/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 'drivers/mmc/mmc.c')
| -rw-r--r-- | drivers/mmc/mmc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index bfcdaa6..fc3123c 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -810,6 +810,11 @@ int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) return __mmc_switch(mmc, set, index, value, true); } +int mmc_boot_wp(struct mmc *mmc) +{ + return mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP, 1); +} + #if !CONFIG_IS_ENABLED(MMC_TINY) static int mmc_set_card_speed(struct mmc *mmc, enum bus_mode mode, bool hsdowngrade) |