LXR uboot/board/toradex/apalis_imx6/do

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright (C) 2014-2016, Toradex AG
   4 */
   5
   6/*
   7 * Helpers for i.MX OTP fusing during module production
   8*/
   9
  10#include <common.h>
  11#ifndef CONFIG_SPL_BUILD
  12#include <command.h>
  13#include <console.h>
  14#include <fuse.h>
  15
  16static int mfgr_fuse(void)
  17{
  18        unsigned val, val6;
  19
  20        fuse_sense(0, 5, &val);
  21        printf("Fuse 0, 5: %8x\n", val);
  22        fuse_sense(0, 6, &val6);
  23        printf("Fuse 0, 6: %8x\n", val6);
  24        fuse_sense(4, 3, &val);
  25        printf("Fuse 4, 3: %8x\n", val);
  26        fuse_sense(4, 2, &val);
  27        printf("Fuse 4, 2: %8x\n", val);
  28        if (val6 & 0x10) {
  29                puts("BT_FUSE_SEL already fused, will do nothing\n");
  30                return CMD_RET_FAILURE;
  31        }
  32        /* boot cfg */
  33        fuse_prog(0, 5, 0x00005062);
  34        /* BT_FUSE_SEL */
  35        fuse_prog(0, 6, 0x00000010);
  36        return CMD_RET_SUCCESS;
  37}
  38
  39int do_mfgr_fuse(struct cmd_tbl *cmdtp, int flag, int argc,
  40                 char *const argv[])
  41{
  42        int ret;
  43        puts("Fusing...\n");
  44        ret = mfgr_fuse();
  45        if (ret == CMD_RET_SUCCESS)
  46                puts("done.\n");
  47        else
  48                puts("failed.\n");
  49        return ret;
  50}
  51
  52int do_updt_fuse(struct cmd_tbl *cmdtp, int flag, int argc,
  53                 char *const argv[])
  54{
  55        unsigned val;
  56        int ret;
  57        int confirmed = argc >= 1 && !strcmp(argv[1], "-y");
  58
  59        /* can be used in scripts for command availability check */
  60        if (argc >= 1 && !strcmp(argv[1], "-n"))
  61                return CMD_RET_SUCCESS;
  62
  63        /* boot cfg */
  64        fuse_sense(0, 5, &val);
  65        printf("Fuse 0, 5: %8x\n", val);
  66        if (val & 0x10) {
  67                puts("Fast boot mode already fused, no need to fuse\n");
  68                return CMD_RET_SUCCESS;
  69        }
  70        if (!confirmed) {
  71                puts("Warning: Programming fuses is an irreversible operation!\n"
  72                                "         Updating to fast boot mode prevents easy\n"
  73                                "         downgrading to previous BSP versions.\n"
  74                                "\nReally perform this fuse programming? <y/N>\n");
  75                if (!confirm_yesno())
  76                        return CMD_RET_FAILURE;
  77        }
  78        puts("Fusing fast boot mode...\n");
  79        ret = fuse_prog(0, 5, 0x00005072);
  80        if (ret == CMD_RET_SUCCESS)
  81                puts("done.\n");
  82        else
  83                puts("failed.\n");
  84        return ret;
  85}
  86
  87U_BOOT_CMD(
  88        mfgr_fuse, 1, 0, do_mfgr_fuse,
  89        "OTP fusing during module production",
  90        ""
  91);
  92
  93U_BOOT_CMD(
  94        updt_fuse, 2, 0, do_updt_fuse,
  95        "OTP fusing during module update",
  96        "updt_fuse [-n] [-y] - boot cfg fast boot mode fusing"
  97);
  98#endif /* CONFIG_SPL_BUILD */
  99