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config_fsl_chain_trust.h
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2015 Freescale Semiconductor, Inc.
*/
#ifndef __CONFIG_FSL_CHAIN_TRUST_H
#define __CONFIG_FSL_CHAIN_TRUST_H
#ifdef CONFIG_CHAIN_OF_TRUST
#ifndef CONFIG_EXTRA_ENV
#define CONFIG_EXTRA_ENV ""
#endif
/*
* Control should not reach back to uboot after validation of images
* for secure boot flow and therefore bootscript should have
* the bootm command. If control reaches back to uboot anyhow
* after validating images, core should just spin.
*/
/*
* Define the key hash for boot script here if public/private key pair used to
* sign bootscript are different from the SRK hash put in the fuse
* Example of defining KEY_HASH is
* #define CONFIG_BOOTSCRIPT_KEY_HASH \
* "41066b564c6ffcef40ccbc1e0a5d0d519604000c785d97bbefd25e4d288d1c8b"
*/
#ifdef CONFIG_USE_BOOTARGS
#define CONFIG_SET_BOOTARGS "setenv bootargs \'" CONFIG_BOOTARGS" \';"
#else
#define CONFIG_SET_BOOTARGS "setenv bootargs \'root=/dev/ram " \
"rw console=ttyS0,115200 ramdisk_size=600000\';"
#endif
#ifdef CONFIG_BOOTSCRIPT_KEY_HASH
#define CONFIG_SECBOOT \
"setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \
CONFIG_SET_BOOTARGS \
CONFIG_EXTRA_ENV \
"esbc_validate $bs_hdraddr " \
__stringify(CONFIG_BOOTSCRIPT_KEY_HASH)";" \
"source $img_addr;" \
"esbc_halt\0"
#else
#define CONFIG_SECBOOT \
"setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \
CONFIG_SET_BOOTARGS \
CONFIG_EXTRA_ENV \
"esbc_validate $bs_hdraddr;" \
"source $img_addr;" \
"esbc_halt\0"
#endif
#ifdef CONFIG_BOOTSCRIPT_COPY_RAM
#define CONFIG_BS_COPY_ENV \
"setenv bs_hdr_ram " __stringify(CONFIG_BS_HDR_ADDR_RAM)";" \
"setenv bs_hdr_device " __stringify(CONFIG_BS_HDR_ADDR_DEVICE)";" \
"setenv bs_hdr_size " __stringify(CONFIG_BS_HDR_SIZE)";" \
"setenv bs_ram " __stringify(CONFIG_BS_ADDR_RAM)";" \
"setenv bs_device " __stringify(CONFIG_BS_ADDR_DEVICE)";" \
"setenv bs_size " __stringify(CONFIG_BS_SIZE)";"
/* For secure boot flow, default environment used will be used */
#if defined(CONFIG_SYS_RAMBOOT) || defined(CONFIG_NAND_BOOT) || \
defined(CONFIG_SD_BOOT)
#if defined(CONFIG_RAMBOOT_NAND) || defined(CONFIG_NAND_BOOT)
#define CONFIG_BS_COPY_CMD \
"nand read $bs_hdr_ram $bs_hdr_device $bs_hdr_size ;" \
"nand read $bs_ram $bs_device $bs_size ;"
#elif defined(CONFIG_SD_BOOT)
#define CONFIG_BS_COPY_CMD \
"mmc read $bs_hdr_ram $bs_hdr_device $bs_hdr_size ;" \
"mmc read $bs_ram $bs_device $bs_size ;"
#endif
#else
#define CONFIG_BS_COPY_CMD \
"cp.b $bs_hdr_device $bs_hdr_ram $bs_hdr_size ;" \
"cp.b $bs_device $bs_ram $bs_size ;"
#endif
#endif /* CONFIG_BOOTSCRIPT_COPY_RAM */
#ifndef CONFIG_BS_COPY_ENV
#define CONFIG_BS_COPY_ENV
#endif
#ifndef CONFIG_BS_COPY_CMD
#define CONFIG_BS_COPY_CMD
#endif
#define CONFIG_CHAIN_BOOT_CMD CONFIG_BS_COPY_ENV \
CONFIG_BS_COPY_CMD \
CONFIG_SECBOOT
#endif
#endif