[U-Boot] [PATCH 8/9] arm: am4x: add U-Boot FIT signing and SPL image post-processing

[Andreas Dannenberg <dannenberg@ti.com>]

From: Madan Srinivas <madans@ti.com>

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>
---
 arch/arm/cpu/armv7/am33xx/config.mk | 1 +
 board/ti/am43xx/board.c             | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/arch/arm/cpu/armv7/am33xx/config.mk b/arch/arm/cpu/armv7/am33xx/config.mk
index 6d95d32..ab94708 100644
--- a/arch/arm/cpu/armv7/am33xx/config.mk
+++ b/arch/arm/cpu/armv7/am33xx/config.mk
@@ -26,6 +26,7 @@ endif
 else
 ifeq ($(CONFIG_TI_SECURE_DEVICE),y)
 ALL-$(CONFIG_QSPI_BOOT) += u-boot_HS_XIP_X-LOADER
+ALL-y	+= u-boot_HS.img
 endif
 ALL-y	+= u-boot.img
 endif
diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index f005762..fc0b38b 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -862,3 +862,10 @@ 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
-- 
2.6.4