Changeset 058b021 in mainline for kernel/generic/src/lib/rd.c

Timestamp:

2006-11-30T13:43:00Z (18 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c55dd58

Parents:

0cf1dcf

Message:

rd work

File:

• kernel/generic/src/lib/rd.c (modified) (1 diff)

kernel/generic/src/lib/rd.c

@@ -39 +39 @@
 
 #include <lib/rd.h>
+#include <arch/byteorder.h>
 
-bool init_rd(void * addr)
+int init_rd(rd_header * header)
 {
-        return false;
+        /* Identify RAM disk */
+        if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) || (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3))
+                return RE_INVALID;
+        
+        /* Identify version */  
+        if (header->version != RD_VERSION)
+                return RE_UNSUPPORTED;
+        
+        uint64_t hsize;
+        switch (header->data_type) {
+        case RD_DATA_LSB:
+                hsize = uint64_t_le2host(header->header_size);
+                break;
+//      case RD_DATA_MSB:
+//              hsize = uint64_t_be2host(header->header_size);
+//              break;
+        default:
+                return RE_UNSUPPORTED;
+        }
+                
+
+        return RE_OK;
 }