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