1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
3 * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
6 #ifndef CONFIG_SPL_BUILD
10 #include <dm/device.h>
11 #include <dm/uclass.h>
13 static bool check_stboard(u16 board)
16 const u16 st_board_id[] = {
25 for (i = 0; i < ARRAY_SIZE(st_board_id); i++)
26 if (board == st_board_id[i])
32 static void display_stboard(u32 otp)
34 printf("Board: MB%04x Var%d Rev.%c-%02d\n",
37 ((otp >> 8) & 0xF) - 1 + 'A',
41 static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc,
47 unsigned long board, variant, bom;
49 int confirmed = argc == 6 && !strcmp(argv[1], "-y");
51 argc -= 1 + confirmed;
52 argv += 1 + confirmed;
54 if (argc != 0 && argc != 4)
57 ret = uclass_get_device_by_driver(UCLASS_MISC,
58 DM_GET_DRIVER(stm32mp_bsec),
61 ret = misc_read(dev, STM32_BSEC_OTP(BSEC_OTP_BOARD),
65 puts("OTP read error");
66 return CMD_RET_FAILURE;
71 puts("Board : OTP board FREE\n");
74 return CMD_RET_SUCCESS;
79 printf("ERROR: OTP board not FREE\n");
80 return CMD_RET_FAILURE;
83 if (strict_strtoul(argv[0], 16, &board) < 0 ||
84 board == 0 || board > 0xFFFF) {
85 printf("argument %d invalid: %s\n", 1, argv[0]);
89 if (strict_strtoul(argv[1], 10, &variant) < 0 ||
90 variant == 0 || variant > 15) {
91 printf("argument %d invalid: %s\n", 2, argv[1]);
95 revision = argv[2][0] - 'A' + 1;
96 if (strlen(argv[2]) > 1 || revision == 0 || revision > 15) {
97 printf("argument %d invalid: %s\n", 3, argv[2]);
101 if (strict_strtoul(argv[3], 10, &bom) < 0 ||
102 bom == 0 || bom > 15) {
103 printf("argument %d invalid: %s\n", 4, argv[3]);
104 return CMD_RET_USAGE;
107 otp = (board << 16) | (variant << 12) | (revision << 8) | bom;
108 display_stboard(otp);
109 printf("=> OTP[%d] = %08X\n", BSEC_OTP_BOARD, otp);
111 if (!check_stboard((u16)board)) {
112 printf("Unknown board MB%04x\n", (u16)board);
113 return CMD_RET_FAILURE;
116 printf("Warning: Programming BOARD in OTP is irreversible!\n");
117 printf("Really perform this OTP programming? <y/N>\n");
119 if (!confirm_yesno()) {
120 puts("BOARD programming aborted\n");
121 return CMD_RET_FAILURE;
125 ret = misc_write(dev, STM32_BSEC_OTP(BSEC_OTP_BOARD),
129 puts("BOARD programming error\n");
130 return CMD_RET_FAILURE;
132 puts("BOARD programming done\n");
134 return CMD_RET_SUCCESS;
137 U_BOOT_CMD(stboard, 6, 0, do_stboard,
138 "read/write board reference in OTP",
140 " Print current board information\n"
141 "stboard [-y] <Board> <Variant> <Revision> <BOM>\n"
142 " Write board information\n"
143 " - Board: xxxx, example 1264 for MB1264\n"
144 " - Variant: 1 ... 15\n"
145 " - Revision: A...O\n"