kexec-arm: add uImage support

uImages are basically just zImages with a special header,
we therefore just skip the header and let the normal zImage
infrastructure do the actual work.

Signed-off-by: Marc Andre Tanner <mat@brain-dump.org>
Signed-off-by: Simon Horman <horms@verge.net.au>

1 files changed, 33 insertions, 0 deletions

diff --git a/kexec/arch/arm/kexec-uImage-arm.c b/kexec/arch/arm/kexec-uImage-arm.c
new file mode 100644
index 0000000..44c8d5f
--- /dev/null
+++ b/kexec/arch/arm/kexec-uImage-arm.c
@@ -0,0 +1,33 @@
+/*
+ * uImage support added by Marc Andre Tanner <mat@brain-dump.org>
+ */
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include "../../kexec.h"
+#include "kexec-arm.h"
+#include "kexec-uImage-arm.h"
+
+int uImage_arm_probe(const char *buf, off_t len)
+{
+	struct image_header header;
+
+	if (len < sizeof(header))
+		return -1;
+
+	memcpy(&header, buf, sizeof(header));
+
+	if (cpu_to_be32(header.ih_magic) != IH_MAGIC)
+		return -1;
+
+	/* XXX: check CRC Checksum? */
+
+	return 0;
+}
+
+int uImage_arm_load(int argc, char **argv, const char *buf, off_t len,
+	struct kexec_info *info)
+{
+	return zImage_arm_load(argc, argv, buf + sizeof(struct image_header),
+	                       len - sizeof(struct image_header), info);
+}