include/config_fsl_chain_trust.h

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