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_SPI_FLASH 18 19 #endif 20 21 #ifdef CONFIG_CHAIN_OF_TRUST 22 23 #ifndef CONFIG_EXTRA_ENV 24 #define CONFIG_EXTRA_ENV "" 25 #endif 26 27 /* 28 * Control should not reach back to uboot after validation of images 29 * for secure boot flow and therefore bootscript should have 30 * the bootm command. If control reaches back to uboot anyhow 31 * after validating images, core should just spin. 32 */ 33 34 /* 35 * Define the key hash for boot script here if public/private key pair used to 36 * sign bootscript are different from the SRK hash put in the fuse 37 * Example of defining KEY_HASH is 38 * #define CONFIG_BOOTSCRIPT_KEY_HASH \ 39 * "41066b564c6ffcef40ccbc1e0a5d0d519604000c785d97bbefd25e4d288d1c8b" 40 */ 41 42 #ifdef CONFIG_BOOTARGS 43 #define CONFIG_SET_BOOTARGS "setenv bootargs \'" CONFIG_BOOTARGS" \';" 44 #else 45 #define CONFIG_SET_BOOTARGS "setenv bootargs \'root=/dev/ram " \ 46 "rw console=ttyS0,115200 ramdisk_size=600000\';" 47 #endif 48 49 50 #ifdef CONFIG_BOOTSCRIPT_KEY_HASH 51 #define CONFIG_SECBOOT \ 52 "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ 53 CONFIG_SET_BOOTARGS \ 54 CONFIG_EXTRA_ENV \ 55 "esbc_validate $bs_hdraddr " \ 56 __stringify(CONFIG_BOOTSCRIPT_KEY_HASH)";" \ 57 "source $img_addr;" \ 58 "esbc_halt\0" 59 #else 60 #define CONFIG_SECBOOT \ 61 "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ 62 CONFIG_SET_BOOTARGS \ 63 CONFIG_EXTRA_ENV \ 64 "esbc_validate $bs_hdraddr;" \ 65 "source $img_addr;" \ 66 "esbc_halt\0" 67 #endif 68 69 #ifdef CONFIG_BOOTSCRIPT_COPY_RAM 70 #define CONFIG_BS_COPY_ENV \ 71 "setenv bs_hdr_ram " __stringify(CONFIG_BS_HDR_ADDR_RAM)";" \ 72 "setenv bs_hdr_device " __stringify(CONFIG_BS_HDR_ADDR_DEVICE)";" \ 73 "setenv bs_hdr_size " __stringify(CONFIG_BS_HDR_SIZE)";" \ 74 "setenv bs_ram " __stringify(CONFIG_BS_ADDR_RAM)";" \ 75 "setenv bs_device " __stringify(CONFIG_BS_ADDR_DEVICE)";" \ 76 "setenv bs_size " __stringify(CONFIG_BS_SIZE)";" 77 78 /* For secure boot flow, default environment used will be used */ 79 #if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_NAND_BOOT) || \ 80 defined(CONFIG_SD_BOOT) 81 #if defined(CONFIG_RAMBOOT_NAND) || defined(CONFIG_NAND_BOOT) 82 #define CONFIG_BS_COPY_CMD \ 83 "nand read $bs_hdr_ram $bs_hdr_device $bs_hdr_size ;" \ 84 "nand read $bs_ram $bs_device $bs_size ;" 85 #elif defined(CONFIG_SD_BOOT) 86 #define CONFIG_BS_COPY_CMD \ 87 "mmc read $bs_hdr_ram $bs_hdr_device $bs_hdr_size ;" \ 88 "mmc read $bs_ram $bs_device $bs_size ;" 89 #endif 90 #else 91 #define CONFIG_BS_COPY_CMD \ 92 "cp.b $bs_hdr_device $bs_hdr_ram $bs_hdr_size ;" \ 93 "cp.b $bs_device $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