Lock the OTP used for board identification for the ST boards after programming.
Signed-off-by: Patrick Delaunay patrick.delaunay@st.com ---
board/st/common/cmd_stboard.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/board/st/common/cmd_stboard.c b/board/st/common/cmd_stboard.c index c7ca773b1c..1573e35410 100644 --- a/board/st/common/cmd_stboard.c +++ b/board/st/common/cmd_stboard.c @@ -42,7 +42,7 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { int ret; - u32 otp; + u32 otp, lock; u8 revision; unsigned long board, variant, bom; struct udevice *dev; @@ -66,11 +66,20 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc, 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 (!otp) puts("Board : OTP board FREE\n"); else display_stboard(otp); + printf(" OTP %d %s locked !\n", BSEC_OTP_BOARD, + lock == 1 ? "" : "NOT"); 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"); 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");
return CMD_RET_SUCCESS;