1 files changed, 74 insertions, 0 deletions
diff --git a/include/aimage.h b/include/aimage.h
new file mode 100644
index 0000000000..9702b7d35c
--- /dev/null
+++ b/include/aimage.h
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2011 Jean-Christhophe PLAGNIOL-VILLARD <plagniol@jcrosoft.com>
+ *
+ * Android boot image
+ *
+ * Under GPLv2 only
+ */
+
+#ifndef __AIMAGE_H__
+#define __AIMAGE_H__
+
+#define BOOT_MAGIC	"ANDROID!"
+#define BOOT_MAGIC_SIZE	8
+#define BOOT_NAME_SIZE	16
+#define BOOT_ARGS_SIZE	512
+
+struct android_header_comp
+{
+	unsigned size;
+	unsigned load_addr;
+};
+
+struct android_header
+{
+	u8 magic[BOOT_MAGIC_SIZE];
+
+	struct android_header_comp kernel;
+
+	struct android_header_comp ramdisk;
+
+	struct android_header_comp second_stage;
+
+	/* physical addr for kernel tags */
+	unsigned tags_addr;
+	/* flash page size we assume */
+	unsigned page_size;
+	/* future expansion: should be 0 */
+	unsigned unused[2];
+
+	unsigned char name[BOOT_NAME_SIZE]; /* asciiz product name */
+
+	unsigned char cmdline[BOOT_ARGS_SIZE];
+
+	unsigned id[8]; /* timestamp / checksum / sha1 / etc */
+};
+
+/*
+ * +-----------------+
+ * | boot header     | 1 page
+ * +-----------------+
+ * | kernel          | n pages
+ * +-----------------+
+ * | ramdisk         | m pages
+ * +-----------------+
+ * | second stage    | o pages
+ * +-----------------+
+ *
+ * n = (kernel_size + page_size - 1) / page_size
+ * m = (ramdisk_size + page_size - 1) / page_size
+ * o = (second_size + page_size - 1) / page_size
+ *
+ * 0. all entities are page_size aligned in flash
+ * 1. kernel and ramdisk are required (size != 0)
+ * 2. second is optional (second_size == 0 -> no second)
+ * 3. load each element (kernel, ramdisk, second) at
+ *    the specified physical address (kernel_addr, etc)
+ * 4. prepare tags at tag_addr.  kernel_args[] is
+ *    appended to the kernel commandline in the tags.
+ * 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
+ * 6. if second_size != 0: jump to second_addr
+ *    else: jump to kernel_addr
+ */
+
+#endif /* __AIMAGE_H__ */