diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index a0f40065003008e9c301902ceee78253c6807fe6..50abc29d8366914fb7fb00f7427f8aa9c30c0f4b 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2226,7 +2226,7 @@
 
 	keepinitrd	[HW,ARM]
 
-	kernelcore=	[KNL,X86,IA-64,PPC]
+	kernelcore=	[KNL,X86,IA-64,PPC,ARM64]
 			Format: nn[KMGTPE] | nn% | "mirror"
 			This parameter specifies the amount of memory usable by
 			the kernel for non-movable allocations.  The requested
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 517b230445bebb878a9f6b5a5c9513f76bd41936..3c834d7c299aea509108ee30fe01453177339b4c 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -388,6 +388,7 @@ void __init __no_sanitize_address setup_arch(char **cmdline_p)
 	arm64_memblock_init();
 
 	efi_fake_memmap();
+	efi_find_mirror();
 
 	paging_init();