projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| a02d517b MK |
2 | /* |
| 3 | * Copyright (C) 2014-2016, Toradex AG | |
| a02d517b 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 | |
| 09140113 | 12 | #include <command.h> |
| a02d517b MK |
13 | #include <console.h> |
| 14 | #include <fuse.h> | |
| 15 | ||
| 16 | static 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 */ | |
| 6218d4bd | 33 | fuse_prog(0, 5, 0x00005062); |
| a02d517b MK |
34 | /* BT_FUSE_SEL */ |
| 35 | fuse_prog(0, 6, 0x00000010); | |
| 36 | return CMD_RET_SUCCESS; | |
| 37 | } | |
| 38 | ||
| 09140113 SG |
39 | int do_mfgr_fuse(struct cmd_tbl *cmdtp, int flag, int argc, |
| 40 | char *const argv[]) | |
| a02d517b MK |
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 | ||
| 09140113 SG |
52 | int do_updt_fuse(struct cmd_tbl *cmdtp, int flag, int argc, |
| 53 | char *const argv[]) | |
| a02d517b MK |
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 | ||
| 87 | U_BOOT_CMD( | |
| 88 | mfgr_fuse, 1, 0, do_mfgr_fuse, | |
| 89 | "OTP fusing during module production", | |
| 90 | "" | |
| 91 | ); | |
| 92 | ||
| 93 | U_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 */ |