Update the command stboard to support the updated coding of OTP 59 with finished good.

The ST product codification have several element - "Commercial Product Name" (CPN): type of product board (DKX, EVX) associated to the board ID "MBxxxx" - "Finished Good" or "Finish Good" (FG): effective content of the product without chip STM32MP1 (LCD, Wifi, …) - BOM: cost variant for same FG (for example, several provider of the same component)

For example - commercial product = STM32MP157C-EV1 - Finished Good = EVA32MP157A1$AU1

Booth information are written on board and these information is also saved in OTP59:

bit [31:16] (hex) => Board id, MBxxxx bit [15:12] (dec) => Variant CPN (1....15) bit [11:8] (dec) => Revision board (index with A = 1, Z = 26) bit [7:4] (dec) => Variant FG : finished good (NEW) bit [3:0] (dec) => BOM (01, .... 255)

The updated command is: stboard [-y] <Board> <VarCPN> <Revision> <VarFG> <BOM>

And the displayed STMicroelectronics board identification is: Board: MB<Board> Var<VarCPN>.<VarFG> Rev.<Revision>-<BOM>

Signed-off-by: Patrick Delaunay patrick.delaunay@st.com Reviewed-by: Patrice Chotard patrice.chotard@st.com ---

Changes in v3: - fix comment after Patrice Chotard review

Changes in v2: - update commit message - add comments in cmd_stboard.c

board/st/common/cmd_stboard.c | 60 ++++++++++++++++++++++++++++------- board/st/stm32mp1/stm32mp1.c | 4 ++- 2 files changed, 52 insertions(+), 12 deletions(-)

diff --git a/board/st/common/cmd_stboard.c b/board/st/common/cmd_stboard.c index 1573e35410..915164aa0b 100644 --- a/board/st/common/cmd_stboard.c +++ b/board/st/common/cmd_stboard.c @@ -1,6 +1,32 @@ // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause /* * Copyright (C) 2019, STMicroelectronics - All Rights Reserved + * + * the st command stboard supports the STMicroelectronics board identification + * saved in OTP 59. + * + * The ST product codification have several element + * - "Commercial Product Name" (CPN): type of product board (DKX, EVX) + * associated to the board ID "MBxxxx" + * - "Finished Good" or "Finish Good" (FG): + * effective content of the product without chip STM32MP1xx (LCD, Wifi,…) + * - BOM: cost variant for same FG (for example, several provider of the same + * component) + * + * For example + * - commercial product = STM32MP157C-EV1 for board MB1263 + * - Finished Good = EVA32MP157A1$AU1 + * + * Both information are written on board and these information are also saved + * in OTP59, with: + * bit [31:16] (hex) => Board id, MBxxxx + * bit [15:12] (dec) => Variant CPN (1....15) + * bit [11:8] (dec) => Revision board (index with A = 1, Z = 26) + * bit [7:4] (dec) => Variant FG : finished good index + * bit [3:0] (dec) => BOM (01, .... 255) + * + * and displayed with the format: + * Board: MB<Board> Var<VarCPN>.<VarFG> Rev.<Revision>-<BOM> */

#ifndef CONFIG_SPL_BUILD @@ -13,6 +39,7 @@ static bool check_stboard(u16 board) { unsigned int i; + /* list of supported ST boards */ const u16 st_board_id[] = { 0x1272, 0x1263, @@ -31,9 +58,11 @@ static bool check_stboard(u16 board)

static void display_stboard(u32 otp) { - printf("Board: MB%04x Var%d Rev.%c-%02d\n", + /* display board indentification with OPT coding */ + printf("Board: MB%04x Var%d.%d Rev.%c-%02d\n", otp >> 16, (otp >> 12) & 0xF, + (otp >> 4) & 0xF, ((otp >> 8) & 0xF) - 1 + 'A', otp & 0xF); } @@ -44,14 +73,14 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc, int ret; u32 otp, lock; u8 revision; - unsigned long board, variant, bom; + unsigned long board, var_cpn, var_fg, bom; struct udevice *dev; - int confirmed = argc == 6 && !strcmp(argv[1], "-y"); + int confirmed = argc == 7 && !strcmp(argv[1], "-y");

argc -= 1 + confirmed; argv += 1 + confirmed;

- if (argc != 0 && argc != 4) + if (argc != 0 && argc != 5) return CMD_RET_USAGE;

ret = uclass_get_device_by_driver(UCLASS_MISC, @@ -95,8 +124,8 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc, return CMD_RET_USAGE; }

- if (strict_strtoul(argv[1], 10, &variant) < 0 || - variant == 0 || variant > 15) { + if (strict_strtoul(argv[1], 10, &var_cpn) < 0 || + var_cpn == 0 || var_cpn > 15) { printf("argument %d invalid: %s\n", 2, argv[1]); return CMD_RET_USAGE; } @@ -107,13 +136,21 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc, return CMD_RET_USAGE; }

- if (strict_strtoul(argv[3], 10, &bom) < 0 || + if (strict_strtoul(argv[3], 10, &var_fg) < 0 || + var_fg > 15) { + printf("argument %d invalid: %s\n", 4, argv[3]); + return CMD_RET_USAGE; + } + + if (strict_strtoul(argv[4], 10, &bom) < 0 || bom == 0 || bom > 15) { printf("argument %d invalid: %s\n", 4, argv[3]); return CMD_RET_USAGE; }

- otp = (board << 16) | (variant << 12) | (revision << 8) | bom; + /* st board indentification value */ + otp = (board << 16) | (var_cpn << 12) | (revision << 8) | + (var_fg << 4) | bom; display_stboard(otp); printf("=> OTP[%d] = %08X\n", BSEC_OTP_BOARD, otp);

@@ -153,15 +190,16 @@ static int do_stboard(cmd_tbl_t *cmdtp, int flag, int argc, return CMD_RET_SUCCESS; }

-U_BOOT_CMD(stboard, 6, 0, do_stboard, +U_BOOT_CMD(stboard, 7, 0, do_stboard, "read/write board reference in OTP", "\n" " Print current board information\n" - "stboard [-y] <Board> <Variant> <Revision> <BOM>\n" + "stboard [-y] <Board> <VarCPN> <Revision> <VarFG> <BOM>\n" " Write board information\n" " - Board: xxxx, example 1264 for MB1264\n" - " - Variant: 1 ... 15\n" + " - VarCPN: 1...15\n" " - Revision: A...O\n" + " - VarFG: 0...15\n" " - BOM: 1...15\n");

#endif diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c index c36e7655c0..4dd0098c6e 100644 --- a/board/st/stm32mp1/stm32mp1.c +++ b/board/st/stm32mp1/stm32mp1.c @@ -104,6 +104,7 @@ int checkboard(void) printf(" (%s)", fdt_compat); puts("\n");

+ /* display the STMicroelectronics board identification */ ret = uclass_get_device_by_driver(UCLASS_MISC, DM_GET_DRIVER(stm32mp_bsec), &dev); @@ -112,9 +113,10 @@ int checkboard(void) ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_BOARD), &otp, sizeof(otp)); if (ret > 0 && otp) { - printf("Board: MB%04x Var%d Rev.%c-%02d\n", + printf("Board: MB%04x Var%d.%d Rev.%c-%02d\n", otp >> 16, (otp >> 12) & 0xF, + (otp >> 4) & 0xF, ((otp >> 8) & 0xF) - 1 + 'A', otp & 0xF); }