[PATCH v4 19/29] efi: arm: Drop exception-level code when running as EFI app

[Simon Glass]

The switch_to_non_secure_mode() function cannot be used since EFI is in
charge of managing exception-levels.

Build just the exceptions.S file.

Modify the existing SPL rule to cater to the EFI app too.

This is quite confusing, so add an issue to clean this up:

https://source.denx.de/u-boot/custodians/u-boot-dm/-/issues/36

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v3)

Changes in v3:
- Rewrite the commit message

 arch/arm/cpu/armv8/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/cpu/armv8/Makefile b/arch/arm/cpu/armv8/Makefile
index 2e71ff2dc97..7bd6cf21b19 100644
--- a/arch/arm/cpu/armv8/Makefile
+++ b/arch/arm/cpu/armv8/Makefile
@@ -13,7 +13,7 @@ ifndef CONFIG_$(XPL_)SYS_DCACHE_OFF
 obj-y	+= cache_v8.o
 obj-y	+= cache.o
 endif
-ifdef CONFIG_XPL_BUILD
+ifneq ($(CONFIG_XPL_BUILD)$(CONFIG_EFI_APP),)
 obj-$(CONFIG_ARMV8_SPL_EXCEPTION_VECTORS) += exceptions.o
 else
 obj-y	+= exceptions.o
-- 
2.43.0