PERFORCE change 28827 for review

[Robert Drehmel]

http://perforce.freebsd.org/chv.cgi?CH=28827

Change 28827 by robert at robert_spes on 2003/04/12 09:11:01

	Define the SPBlock macro - if `sgimips' is defined - to the value
	of the ARC BIOS SPB location on an SGI Octane.
	Add a comment which contains information on an issue which is still
	unresolved.

Affected files ...

.. //depot/projects/mips/sys/boot/arc/include/arcfuncs.h#2 edit

Differences ...

==== //depot/projects/mips/sys/boot/arc/include/arcfuncs.h#2 (text+ko) ====

@@ -35,7 +35,19 @@
 
 /* System Parameter Block holding ARC and VENDOR function vector addresses */
 
+#if defined(__alpha__)
 #define SPBlock ((SPB *)0xffffffff806fe000ul)
+#elif defined(sgimips)
+/*
+ * XXX This is probably not correct.
+ *     All I know for sure is that the function vector is at
+ *     address 0xa000000000001040 on a SGI Octane/R10000 here.
+ *     That would be offset 0x40 of the usual ARCBIOS address
+ *     0xa000000000001000.
+ *     But offsetof(SPB, FirmwareVectorP) is 0x3c!
+ */
+#define	SPBlock	((SPB *)0xa000000000001008)
+#endif
 
 /*
  * Convert between 32bit (ARC) and 64bit (Alpha) pointers