[PATCH 1/5] arm: stm32mp: add config for STM32IMAGE support

[Patrick Delaunay]

By default for trusted boot with TF-A, U-Boot (u-boot-nodtb)
is located in FIP container with its device tree and with
the secure monitor (provided by TF-A or OP-TEE).
The FIP file is loaded by TF-A BL2 and each components is
extracted at the final location.

This patch add CONFIG_STM32MP15x_STM32IMAGE to request the
STM32 image generation for SOC STM32MP15x
when FIP container is not used (u-boot.stm32 is loaded by TF-A
as done previously to keep the backward compatibility).

Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

 arch/arm/mach-stm32mp/Kconfig       |  7 +++++++
 arch/arm/mach-stm32mp/config.mk     |  2 +-
 board/st/stm32mp1/stm32mp1.c        | 10 +++++++---
 configs/stm32mp15_trusted_defconfig |  1 +
 4 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig
index 7c25266f33..09d0b4096f 100644
--- a/arch/arm/mach-stm32mp/Kconfig
+++ b/arch/arm/mach-stm32mp/Kconfig
@@ -56,6 +56,13 @@ config STM32MP15x
 		dual core A7 for STM32MP157/3, monocore for STM32MP151
 		target all the STMicroelectronics board with SOC STM32MP1 family
 
+config STM32MP15x_STM32IMAGE
+	bool "Support STM32 image for generated U-Boot image"
+	depends on STM32MP15x && TFABOOT
+	help
+		Support of STM32 image generation for SOC STM32MP15x
+		for TF-A boot when FIP container is not used
+
 choice
 	prompt "STM32MP15x board select"
 	optional
diff --git a/arch/arm/mach-stm32mp/config.mk b/arch/arm/mach-stm32mp/config.mk
index c30bf482f7..f7f5b77c41 100644
--- a/arch/arm/mach-stm32mp/config.mk
+++ b/arch/arm/mach-stm32mp/config.mk
@@ -4,7 +4,7 @@
 #
 
 ifndef CONFIG_SPL
-INPUTS-y += u-boot.stm32
+INPUTS-$(CONFIG_STM32MP15x_STM32IMAGE) += u-boot.stm32
 else
 ifdef CONFIG_SPL_BUILD
 INPUTS-y += u-boot-spl.stm32
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 261ec15e1b..d8335efa53 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -105,10 +105,14 @@ int checkboard(void)
 	const char *fdt_compat;
 	int fdt_compat_len;
 
-	if (IS_ENABLED(CONFIG_TFABOOT))
-		mode = "trusted";
-	else
+	if (IS_ENABLED(CONFIG_TFABOOT)) {
+		if (IS_ENABLED(CONFIG_STM32MP15x_STM32IMAGE))
+			mode = "trusted - stm32image";
+		else
+			mode = "trusted";
+	} else {
 		mode = "basic";
+	}
 
 	fdt_compat = fdt_getprop(gd->fdt_blob, 0, "compatible",
 				 &fdt_compat_len);
diff --git a/configs/stm32mp15_trusted_defconfig b/configs/stm32mp15_trusted_defconfig
index 5bc5e79400..e008d1fba7 100644
--- a/configs/stm32mp15_trusted_defconfig
+++ b/configs/stm32mp15_trusted_defconfig
@@ -7,6 +7,7 @@ CONFIG_SYS_MEMTEST_END=0xc4000000
 CONFIG_ENV_OFFSET=0x280000
 CONFIG_ENV_SECT_SIZE=0x40000
 CONFIG_DEFAULT_DEVICE_TREE="stm32mp157c-ev1"
+CONFIG_STM32MP15x_STM32IMAGE=y
 CONFIG_TARGET_ST_STM32MP15x=y
 CONFIG_CMD_STM32PROG=y
 CONFIG_ENV_OFFSET_REDUND=0x2C0000
-- 
2.25.1