arm64: Hook up the ZBOOT support as vmlinuz

Add the previously defined _probe() and _usage() routines
to the kexec file types table, and build the new module.

It should be noted that this "vmlinuz" support reuses the
"Image" support to actually load the resulting image after
it has been decompressed to a temporary file.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Signed-off-by: Simon Horman <horms@kernel.org>

kexec/arch/arm64/Makefile

@@ -15,7 +15,8 @@ arm64_KEXEC_SRCS += \
 	kexec/arch/arm64/kexec-arm64.c \
 	kexec/arch/arm64/kexec-elf-arm64.c \
 	kexec/arch/arm64/kexec-uImage-arm64.c \
-	kexec/arch/arm64/kexec-image-arm64.c
+	kexec/arch/arm64/kexec-image-arm64.c \
+	kexec/arch/arm64/kexec-vmlinuz-arm64.c
 
 arm64_UIMAGE = kexec/kexec-uImage.c
 

kexec/arch/arm64/kexec-arm64.c

@@ -74,6 +74,7 @@ struct file_type file_type[] = {
 	{"vmlinux", elf_arm64_probe, elf_arm64_load, elf_arm64_usage},
 	{"Image", image_arm64_probe, image_arm64_load, image_arm64_usage},
 	{"uImage", uImage_arm64_probe, uImage_arm64_load, uImage_arm64_usage},
+	{"vmlinuz", pez_arm64_probe, pez_arm64_load, pez_arm64_usage},
 };
 
 int file_types = sizeof(file_type) / sizeof(file_type[0]);

kexec/arch/arm64/kexec-arm64.h

@@ -44,6 +44,12 @@ int uImage_arm64_load(int argc, char **argv, const char *buf, off_t len,
 		      struct kexec_info *info);
 void uImage_arm64_usage(void);
 
+int pez_arm64_probe(const char *kernel_buf, off_t kernel_size);
+int pez_arm64_load(int argc, char **argv, const char *buf, off_t len,
+			struct kexec_info *info);
+void pez_arm64_usage(void);
+
+
 extern off_t initrd_base;
 extern off_t initrd_size;