[PATCH v1 1/3] efi/libstub: Declare the x86 stub's assembly entry points

[Kees Cook <kees@kernel.org>]

efi_stub_entry() and efi_handover_entry() are entered from efi-mixed.S
and, through the efi32_stub_entry() and efi64_stub_entry() aliases, by
boot loaders using the EFI handover protocol, but have no prototypes.
Declare them in x86-stub.h, as asmlinkage, so that the stub can be built
with the kernel's -Wmissing-prototypes.

Assisted-by: LLM
Signed-off-by: Kees Cook <kees@kernel.org>
---
 drivers/firmware/efi/libstub/x86-stub.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/firmware/efi/libstub/x86-stub.h b/drivers/firmware/efi/libstub/x86-stub.h
index 1c20e99a6494..cc2474c0f95b 100644
--- a/drivers/firmware/efi/libstub/x86-stub.h
+++ b/drivers/firmware/efi/libstub/x86-stub.h
@@ -8,6 +8,15 @@ extern const u16 trampoline_ljmp_imm_offset;
 efi_status_t efi_adjust_memory_range_protection(unsigned long start,
 						unsigned long size);
 
+struct boot_params;
+
+asmlinkage void __noreturn efi_stub_entry(efi_handle_t handle,
+					  efi_system_table_t *sys_table_arg,
+					  struct boot_params *boot_params);
+asmlinkage void efi_handover_entry(efi_handle_t handle,
+				   efi_system_table_t *sys_table_arg,
+				   struct boot_params *boot_params);
+
 #ifdef CONFIG_X86_64
 efi_status_t efi_setup_5level_paging(void);
 void efi_5level_switch(void);
-- 
2.55.0