From: Marek Vasut <marex@denx.de>
Date: Thu, 12 Jan 2023 17:58:41 +0000 (+0100)
Subject: ARM: stm32: Pass ROM API table pointer to U-Boot proper
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=6eea541514461b073be89919bca2e322a2fd1bc8;p=u-boot.git

ARM: stm32: Pass ROM API table pointer to U-Boot proper

The ROM API table pointer is no longer accessible from U-Boot, fix
this by passing the ROM API pointer through. This makes it possible
for U-Boot to call ROM API functions to authenticate payload like
signed fitImages.

Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Marek Vasut <marex@denx.de>
---

diff --git a/arch/arm/mach-stm32mp/cpu.c b/arch/arm/mach-stm32mp/cpu.c
index ee59866bb7..dc4112d5e6 100644
--- a/arch/arm/mach-stm32mp/cpu.c
+++ b/arch/arm/mach-stm32mp/cpu.c
@@ -22,6 +22,7 @@
 #include <dm/device.h>
 #include <dm/uclass.h>
 #include <linux/bitops.h>
+#include <spl.h>
 
 /*
  * early TLB into the .data section so that it not get cleared
@@ -413,3 +414,17 @@ uintptr_t get_stm32mp_bl2_dtb(void)
 {
 	return nt_fw_dtb;
 }
+
+#ifdef CONFIG_SPL_BUILD
+void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
+{
+	typedef void __noreturn (*image_entry_stm32_t)(u32 romapi);
+	uintptr_t romapi = get_stm32mp_rom_api_table();
+
+	image_entry_stm32_t image_entry =
+		(image_entry_stm32_t)spl_image->entry_point;
+
+	printf("image entry point: 0x%lx\n", spl_image->entry_point);
+	image_entry(romapi);
+}
+#endif