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arm: am4x: add U-Boot FIT signing and SPL image post-processing

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Modify the SPL build procedure for AM437x high-security (HS) device
variants to create a secure u-boot_HS.img FIT blob that contains U-Boot
and DTB artifacts signed (and optionally encrypted) with a TI-specific
process based on the CONFIG_TI_SECURE_DEVICE config option and the
externally-provided image signing tool.

Also populate the corresponding FIT image post processing call to be
performed during SPL runtime.

Signed-off-by: Madan Srinivas <madans@ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Madan Srinivas 2016-06-27 09:19:23 -05:00 • committed by Tom Rini
parent 17c2987336
commit e29878fc47
3 changed files with 10 additions and 0 deletions
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1
arch/arm/cpu/armv7/am33xx/config.mk
View file

@ -26,6 +26,7 @@ endif
else else
ifeq ($(CONFIG_TI_SECURE_DEVICE),y) ifeq ($(CONFIG_TI_SECURE_DEVICE),y)
ALL-$(CONFIG_QSPI_BOOT) += u-boot_HS_XIP_X-LOADER ALL-$(CONFIG_QSPI_BOOT) += u-boot_HS_XIP_X-LOADER
ALL-y += u-boot_HS.img
endif endif
ALL-y += u-boot.img ALL-y += u-boot.img
endif endif

8
board/ti/am43xx/board.c
View file

@ -13,6 +13,7 @@
#include <asm/errno.h> #include <asm/errno.h>
#include <spl.h> #include <spl.h>
#include <usb.h> #include <usb.h>
#include <asm/omap_sec_common.h>
#include <asm/arch/clock.h> #include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h> #include <asm/arch/sys_proto.h>
#include <asm/arch/mux.h> #include <asm/arch/mux.h>
@ -862,3 +863,10 @@ int board_fit_config_name_match(const char *name)
return -1; return -1;
} }
#endif #endif
#ifdef CONFIG_TI_SECURE_DEVICE
void board_fit_image_post_process(void **p_image, size_t *p_size)
{
secure_boot_verify_image(p_image, p_size);
}
#endif

1
configs/am43xx_hs_evm_defconfig
View file

@ -13,6 +13,7 @@ CONFIG_SPL_STACK_R=y
CONFIG_FIT=y CONFIG_FIT=y
CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=1, NAND" CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=1, NAND"
CONFIG_SPL_LOAD_FIT=y CONFIG_SPL_LOAD_FIT=y
CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y
CONFIG_HUSH_PARSER=y CONFIG_HUSH_PARSER=y
CONFIG_CMD_BOOTZ=y CONFIG_CMD_BOOTZ=y
# CONFIG_CMD_IMLS is not set # CONFIG_CMD_IMLS is not set