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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
- #include <linux/stringify.h>
- #ifdef CONFIG_CHAIN_OF_TRUST
- /*
- * 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.
- */
- #ifdef CONFIG_USE_BOOTARGS
- #define SET_BOOTARGS "setenv bootargs \'" CONFIG_BOOTARGS" \';"
- #else
- #define SET_BOOTARGS "setenv bootargs \'root=/dev/ram " \
- "rw console=ttyS0,115200 ramdisk_size=600000\';"
- #endif
- #define SECBOOT \
- "setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \
- SET_BOOTARGS \
- "esbc_validate $bs_hdraddr;" \
- "source $img_addr;" \
- "esbc_halt\0"
- #ifdef CONFIG_BOOTSCRIPT_COPY_RAM
- #define 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_NAND_BOOT)
- #define 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 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 BS_COPY_CMD \
- "cp.b $bs_hdr_device $bs_hdr_ram $bs_hdr_size ;" \
- "cp.b $bs_device $bs_ram $bs_size ;"
- #endif
- #else /* !CONFIG_BOOTSCRIPT_COPY_RAM */
- #define BS_COPY_ENV
- #define BS_COPY_CMD
- #endif /* CONFIG_BOOTSCRIPT_COPY_RAM */
- #define CHAIN_BOOT_CMD BS_COPY_ENV \
- BS_COPY_CMD \
- SECBOOT
- #endif
- #endif
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