1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
3 * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
10 #include <dm/uclass.h>
12 static bool check_stboard(u16 board)
15 const u16 st_board_id[] = {
24 for (i = 0; i < ARRAY_SIZE(st_board_id); i++)
25 if (board == st_board_id[i])
31 static void display_stboard(u32 otp)
33 printf("Board: MB%04x Var%d Rev.%c-%02d\n",
36 ((otp >> 8) & 0xF) - 1 + 'A',
40 static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc,
46 unsigned long board, variant, bom;
48 int confirmed = argc == 6 && !strcmp(argv[1], "-y");
50 argc -= 1 + confirmed;
51 argv += 1 + confirmed;
53 if (argc != 0 && argc != 4)
56 ret = uclass_get_device_by_driver(UCLASS_MISC,
57 DM_GET_DRIVER(stm32mp_bsec),
60 ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_BOARD),
64 puts("OTP read error");
65 return CMD_RET_FAILURE;
70 puts("Board : OTP board FREE\n");
73 return CMD_RET_SUCCESS;
78 printf("ERROR: OTP board not FREE\n");
79 return CMD_RET_FAILURE;
82 if (strict_strtoul(argv[0], 16, &board) < 0 ||
83 board == 0 || board > 0xFFFF) {
84 printf("argument %d invalid: %s\n", 1, argv[0]);
88 if (strict_strtoul(argv[1], 10, &variant) < 0 ||
89 variant == 0 || variant > 15) {
90 printf("argument %d invalid: %s\n", 2, argv[1]);
94 revision = argv[2][0] - 'A' + 1;
95 if (strlen(argv[2]) > 1 || revision == 0 || revision > 15) {
96 printf("argument %d invalid: %s\n", 3, argv[2]);
100 if (strict_strtoul(argv[3], 10, &bom) < 0 ||
101 bom == 0 || bom > 15) {
102 printf("argument %d invalid: %s\n", 4, argv[3]);
103 return CMD_RET_USAGE;
106 otp = (board << 16) | (variant << 12) | (revision << 8) | bom;
107 display_stboard(otp);
108 printf("=> OTP[%d] = %08X\n", BSEC_OTP_BOARD, otp);
110 if (!check_stboard((u16)board)) {
111 printf("Unknown board MB%04x\n", (u16)board);
112 return CMD_RET_FAILURE;
115 printf("Warning: Programming BOARD in OTP is irreversible!\n");
116 printf("Really perform this OTP programming? <y/N>\n");
118 if (!confirm_yesno()) {
119 puts("BOARD programming aborted\n");
120 return CMD_RET_FAILURE;
124 ret = misc_write(dev, STM32_BSEC_OTP(BSEC_OTP_BOARD),
128 puts("BOARD programming error\n");
129 return CMD_RET_FAILURE;
131 puts("BOARD programming done\n");
133 return CMD_RET_SUCCESS;
136 U_BOOT_CMD(stboard, 6, 0, do_stboard,
137 "read/write board reference in OTP",
139 " Print current board information\n"
140 "stboard [-y] <Board> <Variant> <Revision> <BOM>\n"
141 " Write board information\n"
142 " - Board: xxxx, example 1264 for MB1264\n"
143 " - Variant: 1 ... 15\n"
144 " - Revision: A...O\n"