efi_loader: Add runtime services
After booting has finished, EFI allows firmware to still interact with the OS
using the "runtime services". These callbacks live in a separate address space,
since they are available long after U-Boot has been overwritten by the OS.
This patch adds enough framework for arbitrary code inside of U-Boot to become
a runtime service with the right section attributes set. For now, we don't make
use of it yet though.
We could maybe in the future map U-boot environment variables to EFI variables
here.
Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/common/board_r.c b/common/board_r.c
index 52a9b26..6432d23 100644
--- a/common/board_r.c
+++ b/common/board_r.c
@@ -65,6 +65,7 @@
#ifdef CONFIG_AVR32
#include <asm/arch/mmu.h>
#endif
+#include <efi_loader.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -177,6 +178,9 @@
*/
gd->fdt_blob += gd->reloc_off;
#endif
+#ifdef CONFIG_EFI_LOADER
+ efi_runtime_relocate(gd->relocaddr, NULL);
+#endif
return 0;
}