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board: stm32mp1: stboard: lock the OTP after programming

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Lock the OTP used for board identification for the ST boards after
programming.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay 2020-02-12 19:37:39 +01:00
parent 7ae22d7278
commit 658fde8a36
1 changed files with 20 additions and 1 deletions
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21
board/st/common/cmd_stboard.c
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@ -42,7 +42,7 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[]) char * const argv[])
{ {
int ret; int ret;
u32 otp; u32 otp, lock;
u8 revision; u8 revision;
unsigned long board, variant, bom; unsigned long board, variant, bom;
struct udevice *dev; struct udevice *dev;
@ -66,11 +66,20 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc,
return CMD_RET_FAILURE; return CMD_RET_FAILURE;
} }
ret = misc_read(dev, STM32_BSEC_LOCK(BSEC_OTP_BOARD),
&lock, sizeof(lock));
if (ret < 0) {
puts("LOCK read error");
return CMD_RET_FAILURE;
}
if (argc == 0) { if (argc == 0) {
if (!otp) if (!otp)
puts("Board : OTP board FREE\n"); puts("Board : OTP board FREE\n");
else else
display_stboard(otp); display_stboard(otp);
printf(" OTP %d %s locked !\n", BSEC_OTP_BOARD,
lock == 1 ? "" : "NOT");
return CMD_RET_SUCCESS; return CMD_RET_SUCCESS;
} }
@ -129,6 +138,16 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc,
puts("BOARD programming error\n"); puts("BOARD programming error\n");
return CMD_RET_FAILURE; return CMD_RET_FAILURE;
} }
/* write persistent lock */
otp = 1;
ret = misc_write(dev, STM32_BSEC_LOCK(BSEC_OTP_BOARD),
&otp, sizeof(otp));
if (ret < 0) {
puts("BOARD lock error\n");
return CMD_RET_FAILURE;
}
puts("BOARD programming done\n"); puts("BOARD programming done\n");
return CMD_RET_SUCCESS; return CMD_RET_SUCCESS;