[Qemu-devel] [6894] Document sun ID PROM contents

[Qemu-devel] [6894] Document sun ID PROM contents

[Blue Swirl]

Revision: 6894
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6894
Author:   blueswir1
Date:     2009-03-28 16:17:50 +0000 (Sat, 28 Mar 2009)
Log Message:
-----------
Document sun ID PROM contents

Signed-off-by: Robert Reif <reif@earthlink.net>

Modified Paths:
--------------
    trunk/hw/firmware_abi.h

Modified: trunk/hw/firmware_abi.h
===================================================================
--- trunk/hw/firmware_abi.h	2009-03-28 16:11:25 UTC (rev 6893)
+++ trunk/hw/firmware_abi.h	2009-03-28 16:17:50 UTC (rev 6894)
@@ -43,12 +43,14 @@
 }
 
 /* Sun IDPROM structure at the end of NVRAM */
+/* from http://www.squirrel.com/squirrel/sun-nvram-hostid.faq.html */
 struct Sun_nvram {
-    uint8_t type;
-    uint8_t machine_id;
-    uint8_t macaddr[6];
-    uint8_t unused[7];
-    uint8_t checksum;
+    uint8_t type;       /* always 01 */
+    uint8_t machine_id; /* first byte of host id (machine type) */
+    uint8_t macaddr[6]; /* 6 byte ethernet address (first 3 bytes 08, 00, 20) */
+    uint8_t date[4];    /* date of manufacture */
+    uint8_t hostid[3];  /* remaining 3 bytes of host id (serial number) */
+    uint8_t checksum;   /* bitwise xor of previous bytes */
 };
 
 static inline void