1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 2a02d517bSMax Krummenacher /* 3a02d517bSMax Krummenacher * Copyright (C) 2014-2016, Toradex AG 4a02d517bSMax Krummenacher */ 5a02d517bSMax Krummenacher 6a02d517bSMax Krummenacher /* 7a02d517bSMax Krummenacher * Helpers for i.MX OTP fusing during module production 8a02d517bSMax Krummenacher */ 9a02d517bSMax Krummenacher 10a02d517bSMax Krummenacher #include <common.h> 11a02d517bSMax Krummenacher #ifndef CONFIG_SPL_BUILD 12a02d517bSMax Krummenacher #include <console.h> 13a02d517bSMax Krummenacher #include <fuse.h> 14a02d517bSMax Krummenacher 15a02d517bSMax Krummenacher static int mfgr_fuse(void) 16a02d517bSMax Krummenacher { 17a02d517bSMax Krummenacher unsigned val, val6; 18a02d517bSMax Krummenacher 19a02d517bSMax Krummenacher fuse_sense(0, 5, &val); 20a02d517bSMax Krummenacher printf("Fuse 0, 5: %8x\n", val); 21a02d517bSMax Krummenacher fuse_sense(0, 6, &val6); 22a02d517bSMax Krummenacher printf("Fuse 0, 6: %8x\n", val6); 23a02d517bSMax Krummenacher fuse_sense(4, 3, &val); 24a02d517bSMax Krummenacher printf("Fuse 4, 3: %8x\n", val); 25a02d517bSMax Krummenacher fuse_sense(4, 2, &val); 26a02d517bSMax Krummenacher printf("Fuse 4, 2: %8x\n", val); 27a02d517bSMax Krummenacher if (val6 & 0x10) { 28a02d517bSMax Krummenacher puts("BT_FUSE_SEL already fused, will do nothing\n"); 29a02d517bSMax Krummenacher return CMD_RET_FAILURE; 30a02d517bSMax Krummenacher } 31a02d517bSMax Krummenacher /* boot cfg */ 32a02d517bSMax Krummenacher fuse_prog(0, 5, 0x00005072); 33a02d517bSMax Krummenacher /* BT_FUSE_SEL */ 34a02d517bSMax Krummenacher fuse_prog(0, 6, 0x00000010); 35a02d517bSMax Krummenacher return CMD_RET_SUCCESS; 36a02d517bSMax Krummenacher } 37a02d517bSMax Krummenacher 38a02d517bSMax Krummenacher int do_mfgr_fuse(cmd_tbl_t *cmdtp, int flag, int argc, 39a02d517bSMax Krummenacher char * const argv[]) 40a02d517bSMax Krummenacher { 41a02d517bSMax Krummenacher int ret; 42a02d517bSMax Krummenacher puts("Fusing...\n"); 43a02d517bSMax Krummenacher ret = mfgr_fuse(); 44a02d517bSMax Krummenacher if (ret == CMD_RET_SUCCESS) 45a02d517bSMax Krummenacher puts("done.\n"); 46a02d517bSMax Krummenacher else 47a02d517bSMax Krummenacher puts("failed.\n"); 48a02d517bSMax Krummenacher return ret; 49a02d517bSMax Krummenacher } 50a02d517bSMax Krummenacher 51a02d517bSMax Krummenacher int do_updt_fuse(cmd_tbl_t *cmdtp, int flag, int argc, 52a02d517bSMax Krummenacher char * const argv[]) 53a02d517bSMax Krummenacher { 54a02d517bSMax Krummenacher unsigned val; 55a02d517bSMax Krummenacher int ret; 56a02d517bSMax Krummenacher int confirmed = argc >= 1 && !strcmp(argv[1], "-y"); 57a02d517bSMax Krummenacher 58a02d517bSMax Krummenacher /* can be used in scripts for command availability check */ 59a02d517bSMax Krummenacher if (argc >= 1 && !strcmp(argv[1], "-n")) 60a02d517bSMax Krummenacher return CMD_RET_SUCCESS; 61a02d517bSMax Krummenacher 62a02d517bSMax Krummenacher /* boot cfg */ 63a02d517bSMax Krummenacher fuse_sense(0, 5, &val); 64a02d517bSMax Krummenacher printf("Fuse 0, 5: %8x\n", val); 65a02d517bSMax Krummenacher if (val & 0x10) { 66a02d517bSMax Krummenacher puts("Fast boot mode already fused, no need to fuse\n"); 67a02d517bSMax Krummenacher return CMD_RET_SUCCESS; 68a02d517bSMax Krummenacher } 69a02d517bSMax Krummenacher if (!confirmed) { 70a02d517bSMax Krummenacher puts("Warning: Programming fuses is an irreversible operation!\n" 71a02d517bSMax Krummenacher " Updating to fast boot mode prevents easy\n" 72a02d517bSMax Krummenacher " downgrading to previous BSP versions.\n" 73a02d517bSMax Krummenacher "\nReally perform this fuse programming? <y/N>\n"); 74a02d517bSMax Krummenacher if (!confirm_yesno()) 75a02d517bSMax Krummenacher return CMD_RET_FAILURE; 76a02d517bSMax Krummenacher } 77a02d517bSMax Krummenacher puts("Fusing fast boot mode...\n"); 78a02d517bSMax Krummenacher ret = fuse_prog(0, 5, 0x00005072); 79a02d517bSMax Krummenacher if (ret == CMD_RET_SUCCESS) 80a02d517bSMax Krummenacher puts("done.\n"); 81a02d517bSMax Krummenacher else 82a02d517bSMax Krummenacher puts("failed.\n"); 83a02d517bSMax Krummenacher return ret; 84a02d517bSMax Krummenacher } 85a02d517bSMax Krummenacher 86a02d517bSMax Krummenacher U_BOOT_CMD( 87a02d517bSMax Krummenacher mfgr_fuse, 1, 0, do_mfgr_fuse, 88a02d517bSMax Krummenacher "OTP fusing during module production", 89a02d517bSMax Krummenacher "" 90a02d517bSMax Krummenacher ); 91a02d517bSMax Krummenacher 92a02d517bSMax Krummenacher U_BOOT_CMD( 93a02d517bSMax Krummenacher updt_fuse, 2, 0, do_updt_fuse, 94a02d517bSMax Krummenacher "OTP fusing during module update", 95a02d517bSMax Krummenacher "updt_fuse [-n] [-y] - boot cfg fast boot mode fusing" 96a02d517bSMax Krummenacher ); 97a02d517bSMax Krummenacher #endif /* CONFIG_SPL_BUILD */ 98