| gaurav rana | f79323c | 2015-03-10 14:08:50 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ |
| 5 | */ |
| 6 | |
| 7 | #ifndef __CONFIG_FSL_SECBOOT_H |
| 8 | #define __CONFIG_FSL_SECBOOT_H |
| 9 | |
| 10 | #ifdef CONFIG_SECURE_BOOT |
| 11 | |
| 12 | #ifndef CONFIG_CMD_ESBC_VALIDATE |
| 13 | #define CONFIG_CMD_ESBC_VALIDATE |
| 14 | #endif |
| 15 | |
| 16 | #ifndef CONFIG_EXTRA_ENV |
| 17 | #define CONFIG_EXTRA_ENV "" |
| 18 | #endif |
| 19 | |
| 20 | /* |
| 21 | * Control should not reach back to uboot after validation of images |
| 22 | * for secure boot flow and therefore bootscript should have |
| 23 | * the bootm command. If control reaches back to uboot anyhow |
| 24 | * after validating images, core should just spin. |
| 25 | */ |
| 26 | |
| 27 | /* |
| 28 | * Define the key hash for boot script here if public/private key pair used to |
| 29 | * sign bootscript are different from the SRK hash put in the fuse |
| 30 | * Example of defining KEY_HASH is |
| 31 | * #define CONFIG_BOOTSCRIPT_KEY_HASH \ |
| 32 | * "41066b564c6ffcef40ccbc1e0a5d0d519604000c785d97bbefd25e4d288d1c8b" |
| 33 | */ |
| 34 | |
| 35 | #ifdef CONFIG_BOOTSCRIPT_KEY_HASH |
| 36 | #define CONFIG_SECBOOT \ |
| 37 | "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ |
| 38 | "setenv bootargs \'root=/dev/ram rw console=ttyS0,115200 " \ |
| 39 | "ramdisk_size=600000\';" \ |
| 40 | CONFIG_EXTRA_ENV \ |
| 41 | "esbc_validate $bs_hdraddr " \ |
| 42 | __stringify(CONFIG_BOOTSCRIPT_KEY_HASH)";" \ |
| 43 | "source $img_addr;" \ |
| 44 | "esbc_halt\0" |
| 45 | #else |
| 46 | #define CONFIG_SECBOOT \ |
| 47 | "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \ |
| 48 | "setenv bootargs \'root=/dev/ram rw console=ttyS0,115200 " \ |
| 49 | "ramdisk_size=600000\';" \ |
| 50 | CONFIG_EXTRA_ENV \ |
| 51 | "esbc_validate $bs_hdraddr;" \ |
| 52 | "source $img_addr;" \ |
| 53 | "esbc_halt\0" |
| 54 | #endif |
| 55 | |
| 56 | /* For secure boot flow, default environment used will be used */ |
| 57 | #if defined(CONFIG_SYS_RAMBOOT) |
| 58 | #if defined(CONFIG_RAMBOOT_SPIFLASH) |
| 59 | #undef CONFIG_ENV_IS_IN_SPI_FLASH |
| 60 | #elif defined(CONFIG_RAMBOOT_NAND) |
| 61 | #undef CONFIG_ENV_IS_IN_NAND |
| 62 | #elif defined(CONFIG_RAMBOOT_SDCARD) |
| 63 | #undef CONFIG_ENV_IS_IN_MMC |
| 64 | #endif |
| 65 | #else /*CONFIG_SYS_RAMBOOT*/ |
| 66 | #undef CONFIG_ENV_IS_IN_FLASH |
| 67 | #endif |
| 68 | |
| 69 | #define CONFIG_ENV_IS_NOWHERE |
| 70 | |
| 71 | /* |
| 72 | * We don't want boot delay for secure boot flow |
| 73 | * before autoboot starts |
| 74 | */ |
| 75 | #undef CONFIG_BOOTDELAY |
| 76 | #define CONFIG_BOOTDELAY 0 |
| 77 | #undef CONFIG_BOOTCOMMAND |
| 78 | #define CONFIG_BOOTCOMMAND CONFIG_SECBOOT |
| 79 | |
| 80 | /* |
| 81 | * CONFIG_ZERO_BOOTDELAY_CHECK should not be defined for |
| 82 | * secure boot flow as defining this would enable a user to |
| 83 | * reach uboot prompt by pressing some key before start of |
| 84 | * autoboot |
| 85 | */ |
| 86 | #undef CONFIG_ZERO_BOOTDELAY_CHECK |
| 87 | |
| 88 | #endif |
| 89 | #endif |