efi: libstub: Move screen_info handling to common code

Currently, arm64, RISC-V and LoongArch rely on the fact that struct
screen_info can be accessed directly, due to the fact that the EFI stub
and the core kernel are part of the same image. This will change after a
future patch, so let's ensure that the screen_info handling is able to
deal with this, by adopting the arm32 approach of passing it as a
configuration table. While at it, switch to ACPI reclaim memory to hold
the screen_info data, which is more appropriate for this kind of
allocation.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/riscv/include/asm/efi.h b/arch/riscv/include/asm/efi.h
index f74879a8f1ea..d0570936cb8c 100644
--- a/arch/riscv/include/asm/efi.h
+++ b/arch/riscv/include/asm/efi.h
@@ -31,12 +31,6 @@ static inline unsigned long efi_get_max_initrd_addr(unsigned long image_addr)
 	return ULONG_MAX;
 }
 
-#define alloc_screen_info(x...)		(&screen_info)
-
-static inline void free_screen_info(struct screen_info *si)
-{
-}
-
 void efi_virtmap_load(void);
 void efi_virtmap_unload(void);