mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
3f701cc50a
To unify steps for secure boot for xip (eg. NOR) and non-xip memories (eg. NAND, SD), bootscipts and its header are copied to main memory. Validation and execution are performed from there. For other ARM Platforms (ls1043 and ls1020), to avoid disruption of existing users, this copy step is not used for NOR boot. Signed-off-by: Aneesh Bansal <aneesh.bansal@nxp.com> Signed-off-by: Saksham Jain <saksham.jain@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
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* Copyright 2015 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __CONFIG_FSL_CHAIN_TRUST_H
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#define __CONFIG_FSL_CHAIN_TRUST_H
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/* For secure boot, since ENVIRONMENT in flash/external memories is
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* not verified, undef CONFIG_ENV_xxx and set default env
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* (CONFIG_ENV_IS_NOWHERE)
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*/
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#ifdef CONFIG_SECURE_BOOT
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#undef CONFIG_ENV_IS_IN_EEPROM
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#undef CONFIG_ENV_IS_IN_NAND
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#undef CONFIG_ENV_IS_IN_MMC
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#undef CONFIG_ENV_IS_IN_SPI_FLASH
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#undef CONFIG_ENV_IS_IN_FLASH
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#define CONFIG_ENV_IS_NOWHERE
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#endif
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#ifdef CONFIG_CHAIN_OF_TRUST
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#ifndef CONFIG_EXTRA_ENV
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#define CONFIG_EXTRA_ENV ""
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#endif
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/*
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* Control should not reach back to uboot after validation of images
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* for secure boot flow and therefore bootscript should have
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* the bootm command. If control reaches back to uboot anyhow
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* after validating images, core should just spin.
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*/
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/*
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* Define the key hash for boot script here if public/private key pair used to
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* sign bootscript are different from the SRK hash put in the fuse
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* Example of defining KEY_HASH is
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* #define CONFIG_BOOTSCRIPT_KEY_HASH \
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* "41066b564c6ffcef40ccbc1e0a5d0d519604000c785d97bbefd25e4d288d1c8b"
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*/
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#ifdef CONFIG_BOOTSCRIPT_KEY_HASH
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#define CONFIG_SECBOOT \
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"setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \
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"setenv bootargs \'root=/dev/ram rw console=ttyS0,115200 " \
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"ramdisk_size=600000\';" \
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CONFIG_EXTRA_ENV \
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"esbc_validate $bs_hdraddr " \
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__stringify(CONFIG_BOOTSCRIPT_KEY_HASH)";" \
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"source $img_addr;" \
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"esbc_halt\0"
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#else
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#define CONFIG_SECBOOT \
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"setenv bs_hdraddr " __stringify(CONFIG_BOOTSCRIPT_HDR_ADDR)";" \
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"setenv bootargs \'root=/dev/ram rw console=ttyS0,115200 " \
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"ramdisk_size=600000\';" \
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CONFIG_EXTRA_ENV \
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"esbc_validate $bs_hdraddr;" \
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"source $img_addr;" \
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"esbc_halt\0"
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#endif
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#ifdef CONFIG_BOOTSCRIPT_COPY_RAM
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#define CONFIG_BS_COPY_ENV \
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"setenv bs_hdr_ram " __stringify(CONFIG_BS_HDR_ADDR_RAM)";" \
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"setenv bs_hdr_flash " __stringify(CONFIG_BS_HDR_ADDR_FLASH)";" \
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"setenv bs_hdr_size " __stringify(CONFIG_BS_HDR_SIZE)";" \
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"setenv bs_ram " __stringify(CONFIG_BS_ADDR_RAM)";" \
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"setenv bs_flash " __stringify(CONFIG_BS_ADDR_FLASH)";" \
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"setenv bs_size " __stringify(CONFIG_BS_SIZE)";"
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/* For secure boot flow, default environment used will be used */
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#if defined(CONFIG_SYS_RAMBOOT)
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#if defined(CONFIG_RAMBOOT_NAND)
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#define CONFIG_BS_COPY_CMD \
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"nand read $bs_hdr_ram $bs_hdr_flash $bs_hdr_size ;" \
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"nand read $bs_ram $bs_flash $bs_size ;"
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#endif /* CONFIG_RAMBOOT_NAND */
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#else
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#define CONFIG_BS_COPY_CMD \
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"cp.b $bs_hdr_flash $bs_hdr_ram $bs_hdr_size ;" \
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"cp.b $bs_flash $bs_ram $bs_size ;"
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#endif
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#endif /* CONFIG_BOOTSCRIPT_COPY_RAM */
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#ifndef CONFIG_BS_COPY_ENV
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#define CONFIG_BS_COPY_ENV
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#endif
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#ifndef CONFIG_BS_COPY_CMD
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#define CONFIG_BS_COPY_CMD
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#endif
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#define CONFIG_CHAIN_BOOT_CMD CONFIG_BS_COPY_ENV \
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CONFIG_BS_COPY_CMD \
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CONFIG_SECBOOT
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#endif
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#endif
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