[U-Boot] [PATCH v2 7/9] arm: omap5: add U-Boot FIT signing and SPL image post-processing

[Andreas Dannenberg]

Modify the SPL build procedure for AM57xx and DRA7xx high-security (HS)
device variants to create a secure u-boot_HS.img FIT blob that contains
U-Boot and DTB artifacts signed 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: Daniel Allred <d-allred at ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg at ti.com>
Reviewed-by: Tom Rini <trini at konsulko.com>
---
 arch/arm/cpu/armv7/omap5/config.mk | 3 +++
 board/ti/am57xx/board.c            | 8 ++++++++
 board/ti/dra7xx/evm.c              | 9 +++++++++
 configs/am57xx_hs_evm_defconfig    | 1 +
 configs/dra7xx_hs_evm_defconfig    | 1 +
 5 files changed, 22 insertions(+)

diff --git a/arch/arm/cpu/armv7/omap5/config.mk b/arch/arm/cpu/armv7/omap5/config.mk
index a7e55a5..d245572 100644
--- a/arch/arm/cpu/armv7/omap5/config.mk
+++ b/arch/arm/cpu/armv7/omap5/config.mk
@@ -15,5 +15,8 @@ else
 ALL-y	+= MLO
 endif
 else
+ifeq ($(CONFIG_TI_SECURE_DEVICE),y)
+ALL-y   += u-boot_HS.img
+endif
 ALL-y	+= u-boot.img
 endif
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index 08cf14d..927d136 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -13,6 +13,7 @@
 #include <sata.h>
 #include <usb.h>
 #include <asm/omap_common.h>
+#include <asm/omap_sec_common.h>
 #include <asm/emif.h>
 #include <asm/gpio.h>
 #include <asm/arch/gpio.h>
@@ -750,3 +751,10 @@ int board_fit_config_name_match(const char *name)
 		return -1;
 }
 #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
diff --git a/board/ti/dra7xx/evm.c b/board/ti/dra7xx/evm.c
index 0394e4e..f9382b8 100644
--- a/board/ti/dra7xx/evm.c
+++ b/board/ti/dra7xx/evm.c
@@ -17,6 +17,8 @@
 #include <asm/gpio.h>
 #include <usb.h>
 #include <linux/usb/gadget.h>
+#include <asm/omap_common.h>
+#include <asm/omap_sec_common.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/dra7xx_iodelay.h>
 #include <asm/emif.h>
@@ -830,3 +832,10 @@ int board_fit_config_name_match(const char *name)
 		return -1;
 }
 #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
diff --git a/configs/am57xx_hs_evm_defconfig b/configs/am57xx_hs_evm_defconfig
index e01e504..01a4701 100644
--- a/configs/am57xx_hs_evm_defconfig
+++ b/configs/am57xx_hs_evm_defconfig
@@ -40,4 +40,5 @@ CONFIG_USB_XHCI_DWC3=y
 CONFIG_FIT=y
 CONFIG_SPL_OF_LIBFDT=y
 CONFIG_SPL_LOAD_FIT=y
+CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y
 CONFIG_OF_LIST="am57xx-beagle-x15"
diff --git a/configs/dra7xx_hs_evm_defconfig b/configs/dra7xx_hs_evm_defconfig
index 6933ab5..eb01f41 100644
--- a/configs/dra7xx_hs_evm_defconfig
+++ b/configs/dra7xx_hs_evm_defconfig
@@ -58,4 +58,5 @@ CONFIG_G_DNL_PRODUCT_NUM=0xd022
 CONFIG_FIT=y
 CONFIG_SPL_OF_LIBFDT=y
 CONFIG_SPL_LOAD_FIT=y
+CONFIG_SPL_FIT_IMAGE_POST_PROCESS=y
 CONFIG_OF_LIST="dra7-evm dra72-evm"
-- 
2.6.4