arm64/kexec: Add PE image format support

Now everything is ready for kexec PE image parser. Select it on arm64
for zboot and UKI image support.

Signed-off-by: Pingfan Liu <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
To: [email protected]

Author: Pingfan Liu

arch/arm64/Kconfig

@@ -1608,6 +1608,7 @@ config ARCH_SELECTS_KEXEC_FILE
 	def_bool y
 	depends on KEXEC_FILE
 	select HAVE_IMA_KEXEC if IMA
+	select KEXEC_PE_IMAGE
 
 config ARCH_SUPPORTS_KEXEC_SIG
 	def_bool y

arch/arm64/include/asm/kexec.h

@@ -120,6 +120,7 @@ struct kimage_arch {
 
 #ifdef CONFIG_KEXEC_FILE
 extern const struct kexec_file_ops kexec_image_ops;
+extern const struct kexec_file_ops kexec_pe_image_ops;
 
 int arch_kimage_file_post_load_cleanup(struct kimage *image);
 #define arch_kimage_file_post_load_cleanup arch_kimage_file_post_load_cleanup

arch/arm64/kernel/machine_kexec_file.c

@@ -24,6 +24,9 @@
 
 const struct kexec_file_ops * const kexec_file_loaders[] = {
 	&kexec_image_ops,
+#ifdef CONFIG_KEXEC_PE_IMAGE
+	&kexec_pe_image_ops,
+#endif
 	NULL
 };