First versions

src/core/image.c

@@ -0,0 +1,49 @@
+#include "buffer.h"
+#include "image.h"
+
+static struct image images_start[0] __image_start;
+static struct image images_end[0] __image_end;
+
+/*
+ * Identify the image format
+ *
+ */
+static struct image * identify_image ( struct buffer *buffer ) {
+	struct image_header header;
+	int header_len = sizeof ( header );
+	off_t len;
+	struct image *image;
+	
+	/* Copy first (up to) 512 bytes of image to easily-accessible
+	 * buffer.
+	 */
+	len = buffer->fill;
+	copy_from_phys ( &header, buffer->start,
+			 len < header_len ? len : header_len );
+	
+	for ( image = images_start ; image < images_end ; image++ ) {
+		if ( image->probe ( &header, len ) )
+			return image;
+	}
+	
+	return NULL;
+}
+
+/*
+ * Boot a loaded image
+ *
+ */
+int boot_image ( struct buffer *buffer ) {
+	struct image *image;
+
+	image = identify_image ( buffer );
+	if ( ! image ) {
+		DBG ( "IMAGE could not identify image format\n" );
+		return 0;
+	}
+
+	DBG ( "IMAGE found %s image (length %d)\n",
+	      image->name, buffer->fill );
+
+	return image->boot ( buffer->start, buffer->fill );
+}