boards: x86: depend on CONFIG_BUILD_OUTPUT_EFI
Add a new Kconfig CONFIG_BUILD_OUTPUT_EFI and select that for boards
that want to generate an EFI application.
Make qemu_x86_64 also generate an EFI file, however do not enable this
by default yet.
Goal is to boot qemu using EFI to be able to test this path in the
future.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/Kconfig.zephyr b/Kconfig.zephyr
index 24a7f6b..68864a1 100644
--- a/Kconfig.zephyr
+++ b/Kconfig.zephyr
@@ -317,6 +317,20 @@
Build a "raw" binary zephyr/zephyr.bin in the build directory.
The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
+config BUILD_OUTPUT_EFI
+ bool "Build as an EFI application"
+ default n
+ depends on X86_64
+ help
+ Build as an EFI application.
+
+ This works by creating a "zephyr.efi" EFI binary containing a zephyr
+ image extracted from a built zephyr.elf file. EFI applications are
+ relocatable, and cannot be placed at specific locations in memory.
+ Instead, the stub code will copy the embedded zephyr sections to the
+ appropriate locations at startup, clear any zero-filled (BSS, etc...)
+ areas, then jump into the 64 bit entry point.
+
config BUILD_OUTPUT_EXE
bool "Build a binary in ELF format with .exe extension"
help
