From: WANG Rui <r@hev.cc>
Date: Mon, 27 Apr 2026 08:47:20 +0000 (+0800)
Subject: efi/loongarch: Implement efi_cache_sync_image()
X-Git-Tag: v7.1-rc3~33^2~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad6f4f3ea72f866176f9dd6031c8778da088c686;p=thirdparty%2Fkernel%2Fstable.git

efi/loongarch: Implement efi_cache_sync_image()

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@hev.cc>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---

diff --git a/drivers/firmware/efi/libstub/loongarch.c b/drivers/firmware/efi/libstub/loongarch.c
index 9825f5218137..f7938d5c196a 100644
--- a/drivers/firmware/efi/libstub/loongarch.c
+++ b/drivers/firmware/efi/libstub/loongarch.c
@@ -18,6 +18,11 @@ efi_status_t check_platform_features(void)
 	return EFI_SUCCESS;
 }
 
+void efi_cache_sync_image(unsigned long image_base, unsigned long alloc_size)
+{
+	asm volatile ("ibar 0" ::: "memory");
+}
+
 struct exit_boot_struct {
 	efi_memory_desc_t	*runtime_map;
 	int			runtime_entry_count;