Changes in kernel/generic/include/lib/rd.h [fb48a0e:d99c1d2] in mainline

File:

• kernel/generic/include/lib/rd.h (modified) (1 diff)

kernel/generic/include/lib/rd.h

@@ -38 +38 @@
 #include <typedefs.h>
 
-extern void init_rd(void *, size_t);
+/**
+ * RAM disk version
+ */
+#define RD_VERSION      1
+
+/**
+ * RAM disk magic number
+ */
+#define RD_MAGIC_SIZE   4
+#define RD_MAG0                 'H'
+#define RD_MAG1                 'O'
+#define RD_MAG2                 'R'
+#define RD_MAG3                 'D'
+
+/**
+ * RAM disk data encoding types
+ */
+#define RD_DATA_NONE    0
+#define RD_DATA_LSB             1               /* Least significant byte first (little endian) */
+#define RD_DATA_MSB             2               /* Most signigicant byte first (big endian) */
+
+/**
+ * RAM disk error return codes
+ */
+#define RE_OK                   0       /* No error */
+#define RE_INVALID              1       /* Invalid RAM disk image */
+#define RE_UNSUPPORTED          2       /* Non-supported image (e.g. wrong version) */
+
+/** RAM disk header */
+struct rd_header {
+        uint8_t magic[RD_MAGIC_SIZE];
+        uint8_t version;
+        uint8_t data_type;
+        uint32_t header_size;
+        uint64_t data_size;
+} __attribute__ ((packed));
+
+typedef struct rd_header rd_header_t;
+
+extern int init_rd(rd_header_t *addr, size_t size);
 
 #endif