1 /* 2 * Copyright 2015 Freescale Semiconductor, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef __CONFIG_FSL_CHAIN_TRUST_H 8 #define __CONFIG_FSL_CHAIN_TRUST_H 9 10 /* For secure boot, since ENVIRONMENT in flash/external memories is 11 * not verified, undef CONFIG_ENV_xxx and set default env 12 * (CONFIG_ENV_IS_NOWHERE) 13 */ 14 #ifdef CONFIG_SECURE_BOOT 15 16 #undef CONFIG_ENV_IS_IN_EEPROM 17 #undef CONFIG_ENV_IS_IN_NAND 18 #undef CONFIG_ENV_IS_IN_MMC 19 #undef CONFIG_ENV_IS_IN_SPI_FLASH 20 #undef CONFIG_ENV_IS_IN_FLASH 21 22 #define CONFIG_ENV_IS_NOWHERE 23 24 #endif 25 26 #ifdef CONFIG_CHAIN_OF_TRUST 27 28 #ifndef CONFIG_EXTRA_ENV 29 #define CONFIG_EXTRA_ENV "" 30 #endif 31 32 /* 33 * Control should not reach back to uboot after validation of images 34 * for secure boot flow and therefore bootscript should have 35 * the bootm command. If control reaches back to uboot anyhow 36 * after validating images, core should just spin. 37 */ 38 39 /* 40 * Define the key hash for boot script here if public/private key pair used to 41 * sign bootscript are different from the SRK hash put in the fuse 42 * Example of defining KEY_HASH is 43 * #define CONFIG_BOOTSCRIPT_KEY_HASH \ 44 * "41066b564c6ffcef40ccbc1e0a5d0d519604000c785d97bbefd25e4d288d1c8b" 45 */ 46 47 #ifdef CONFIG_BOOTARGS 48 #define CONFIG_SET_BOOTARGS "setenv bootargs \'" CONFIG_BOOTARGS" \';" 49 #else 50 #define CONFIG_SET_BOOTARGS "setenv bootargs \'root=/dev/ram " \ 51 "rw console=ttyS0,115200 ramdisk_size=600000\';" 52 #endif 53 54 55 #ifdef CONFIG_BOOTSCRIPT_KEY_HASH 56 #define CONFIG_SECBOOT \ 57 "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ 58 CONFIG_SET_BOOTARGS \ 59 CONFIG_EXTRA_ENV \ 60 "esbc_validate $bs_hdraddr " \ 61 __stringify(CONFIG_BOOTSCRIPT_KEY_HASH)";" \ 62 "source $img_addr;" \ 63 "esbc_halt\0" 64 #else 65 #define CONFIG_SECBOOT \ 66 "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ 67 CONFIG_SET_BOOTARGS \ 68 CONFIG_EXTRA_ENV \ 69 "esbc_validate $bs_hdraddr;" \ 70 "source $img_addr;" \ 71 "esbc_halt\0" 72 #endif 73 74 #ifdef CONFIG_BOOTSCRIPT_COPY_RAM 75 #define CONFIG_BS_COPY_ENV \ 76 "setenv bs_hdr_ram " __stringify(CONFIG_BS_HDR_ADDR_RAM)";" \ 77 "setenv bs_hdr_flash " __stringify(CONFIG_BS_HDR_ADDR_FLASH)";" \ 78 "setenv bs_hdr_size " __stringify(CONFIG_BS_HDR_SIZE)";" \ 79 "setenv bs_ram " __stringify(CONFIG_BS_ADDR_RAM)";" \ 80 "setenv bs_flash " __stringify(CONFIG_BS_ADDR_FLASH)";" \ 81 "setenv bs_size " __stringify(CONFIG_BS_SIZE)";" 82 83 /* For secure boot flow, default environment used will be used */ 84 #if defined(CONFIG_SYS_RAMBOOT) 85 #if defined(CONFIG_RAMBOOT_NAND) 86 #define CONFIG_BS_COPY_CMD \ 87 "nand read $bs_hdr_ram $bs_hdr_flash $bs_hdr_size ;" \ 88 "nand read $bs_ram $bs_flash $bs_size ;" 89 #endif /* CONFIG_RAMBOOT_NAND */ 90 #else 91 #define CONFIG_BS_COPY_CMD \ 92 "cp.b $bs_hdr_flash $bs_hdr_ram $bs_hdr_size ;" \ 93 "cp.b $bs_flash $bs_ram $bs_size ;" 94 #endif 95 #endif /* CONFIG_BOOTSCRIPT_COPY_RAM */ 96 97 #ifndef CONFIG_BS_COPY_ENV 98 #define CONFIG_BS_COPY_ENV 99 #endif 100 101 #ifndef CONFIG_BS_COPY_CMD 102 #define CONFIG_BS_COPY_CMD 103 #endif 104 105 #define CONFIG_CHAIN_BOOT_CMD CONFIG_BS_COPY_ENV \ 106 CONFIG_BS_COPY_CMD \ 107 CONFIG_SECBOOT 108 109 #endif 110 #endif 111