[U-Boot] [RFC 9/9] ti: omap-common: Update to generate secure FIT

[Andreas Dannenberg]

From: Daniel Allred <d-allred at ti.com>

Adds commands so that when a secure device is in use and the SPL is
built to load a FIT image (with combined u-boot binary and various
DTBs), these components that get fed into the FIT are all processed to
be signed/encrypted/etc. as per the operations performed by the
secure-binary-image script of the TI SECDEV package.

Signed-off-by: Daniel Allred <d-allred at ti.com>
Signed-off-by: Andreas Dannenberg <dannenberg at ti.com>
---
 arch/arm/cpu/armv7/omap-common/config_secure.mk | 57 ++++++++++++++++++++++++-
 arch/arm/cpu/armv7/omap5/config.mk              |  3 ++
 2 files changed, 58 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv7/omap-common/config_secure.mk b/arch/arm/cpu/armv7/omap-common/config_secure.mk
index c7bb101..c4514ad 100644
--- a/arch/arm/cpu/armv7/omap-common/config_secure.mk
+++ b/arch/arm/cpu/armv7/omap-common/config_secure.mk
@@ -12,8 +12,8 @@ cmd_mkomapsecimg = $(TI_SECURE_DEV_PKG)/scripts/create-boot-image.sh \
 	$(if $(KBUILD_VERBOSE:1=), >/dev/null)
 else
 cmd_mkomapsecimg = $(TI_SECURE_DEV_PKG)/scripts/create-boot-image.sh \
-    $(patsubst u-boot_HS_%,%,$(@F)) $< $@ $(CONFIG_ISW_ENTRY_ADDR) \
-    $(if $(KBUILD_VERBOSE:1=), >/dev/null)
+	$(patsubst u-boot_HS_%,%,$(@F)) $< $@ $(CONFIG_ISW_ENTRY_ADDR) \
+	$(if $(KBUILD_VERBOSE:1=), >/dev/null)
 endif
 else
 cmd_mkomapsecimg = echo "WARNING:" \
@@ -25,6 +25,26 @@ cmd_mkomapsecimg = echo "WARNING: TI_SECURE_DEV_PKG environment" \
 	"variable must be defined for TI secure devices. $@ was NOT created!"
 endif
 
+ifdef CONFIG_SPL_LOAD_FIT
+quiet_cmd_omapsecureimg = SECURE  $@
+ifneq ($(TI_SECURE_DEV_PKG),)
+ifneq ($(wildcard $(TI_SECURE_DEV_PKG)/scripts/secure-binary-image.sh),)
+cmd_omapsecureimg = $(TI_SECURE_DEV_PKG)/scripts/secure-binary-image.sh \
+	$< $@ \
+	$(if $(KBUILD_VERBOSE:1=), >/dev/null)
+else
+cmd_omapsecureimg = echo "WARNING:" \
+	"$(TI_SECURE_DEV_PKG)/scripts/secure-binary-image.sh not found." \
+	"$@ was NOT created!"; cp $< $@
+endif
+else
+cmd_omapsecureimg = echo "WARNING: TI_SECURE_DEV_PKG environment" \
+	"variable must be defined for TI secure devices." \
+	"$@ was NOT created!"; cp $< $@
+endif
+endif
+
+
 # Standard X-LOADER target (QPSI, NOR flash)
 u-boot-spl_HS_X-LOADER: $(obj)/u-boot-spl.bin
 	$(call if_changed,mkomapsecimg)
@@ -64,3 +84,36 @@ u-boot-spl_HS_SPI_X-LOADER: $(obj)/u-boot-spl.bin
 # the mkomapsecimg command looks for a u-boot-HS_* prefix
 u-boot_HS_XIP_X-LOADER: $(obj)/u-boot.bin
 	$(call if_changed,mkomapsecimg)
+
+# For supporting the SPL loading and interpreting
+# of FIT images whose components are pre-processed
+# before being integrated into the FIT image in order
+# to secure them in some way
+ifdef CONFIG_SPL_LOAD_FIT
+
+MKIMAGEFLAGS_u-boot_HS.img = -f auto -A $(ARCH) -T firmware -C none -O u-boot \
+	-a $(CONFIG_SYS_TEXT_BASE) -e $(CONFIG_SYS_UBOOT_START) \
+	-n "U-Boot $(UBOOTRELEASE) for $(BOARD) board" -E \
+	$(patsubst %,-b arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
+
+OF_LIST_TARGETS = $(patsubst %,arch/$(ARCH)/dts/%.dtb,$(subst ",,$(CONFIG_OF_LIST)))
+$(OF_LIST_TARGETS): dtbs
+
+%_HS.dtb: %.dtb
+	$(call if_changed,omapsecureimg)
+	$(Q)if [ -f $@ ]; then \
+		cp -f $@ $<; \
+	fi
+
+u-boot-nodtb_HS.bin: u-boot-nodtb.bin
+	$(call if_changed,omapsecureimg)
+
+u-boot_HS.img: u-boot-nodtb_HS.bin u-boot.img $(patsubst %.dtb,%_HS.dtb,$(OF_LIST_TARGETS))
+	$(call if_changed,mkimage)
+	$(Q)if [ -f $@ ]; then \
+		cp -f $@ u-boot.img; \
+	fi
+
+.NOTPARALLEL: dtbs
+
+endif
diff --git a/arch/arm/cpu/armv7/omap5/config.mk b/arch/arm/cpu/armv7/omap5/config.mk
index a7e55a5..503f31c 100644
--- a/arch/arm/cpu/armv7/omap5/config.mk
+++ b/arch/arm/cpu/armv7/omap5/config.mk
@@ -15,5 +15,8 @@ else
 ALL-y	+= MLO
 endif
 else
+ifeq ($(CONFIG_TI_SECURE_DEVICE)$(CONFIG_SECURE_BOOT),yy)
+ALL-y   += u-boot_HS.img
+endif
 ALL-y	+= u-boot.img
 endif
-- 
2.6.4