projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 592f4aed MK |
2 | /* |
| 3 | * Copyright (C) 2014-2016, Toradex AG | |
| 592f4aed MK |
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 | ||
| 15 | static 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 | ||
| 38 | int 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 | ||
| 51 | int 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 | ||
| 86 | U_BOOT_CMD( | |
| 87 | mfgr_fuse, 1, 0, do_mfgr_fuse, | |
| 88 | "OTP fusing during module production", | |
| 89 | "" | |
| 90 | ); | |
| 91 | ||
| 92 | U_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 */ |