[PATCH 1/2] efi/loongarch: Implement efi_cache_sync_image

[WANG Rui]

Provide a LoongArch implementation of efi_cache_sync_image() to ensure
instruction cache coherency after the kernel image is relocated.

Signed-off-by: WANG Rui <r@xxxxxx>
---
 drivers/firmware/efi/libstub/loongarch.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/firmware/efi/libstub/loongarch.c b/drivers/firmware/efi/libstub/loongarch.c
index 9825f5218137..26495747f69f 100644
--- a/drivers/firmware/efi/libstub/loongarch.c
+++ b/drivers/firmware/efi/libstub/loongarch.c
@@ -82,3 +82,8 @@ efi_status_t efi_boot_kernel(void *handle, efi_loaded_image_t *image,
 	real_kernel_entry(true, (unsigned long)cmdline_ptr,
 			  (unsigned long)efi_system_table);
 }
+
+void efi_cache_sync_image(unsigned long image_base, unsigned long alloc_size)
+{
+	asm volatile ("ibar 0" ::: "memory");
+}
-- 
2.54.0