[PATCH] ppc: Fix boot with yaboot with ARCH=ppc

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

The merge of machine types broke boot with yaboot & ARCH=ppc due to the
old code still retreiving the old-syle machine type passed in by yaboot.
This patch fixes it by translating those old numbers. Since that whole
mecanism is deprecated, this is a temporary fix until ARCH=ppc uses the
new prom_init that the merged architecture now uses for both ppc32 and
ppc64 (after 2.6.15)

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Index: linux-work/arch/ppc/kernel/setup.c
===================================================================
--- linux-work.orig/arch/ppc/kernel/setup.c	2005-11-15 18:15:23.000000000 +1100
+++ linux-work/arch/ppc/kernel/setup.c	2005-11-15 18:18:37.000000000 +1100
@@ -602,7 +602,19 @@
 #endif /* CONFIG_BLK_DEV_INITRD */
 #ifdef CONFIG_PPC_MULTIPLATFORM
 		case BI_MACHTYPE:
-			_machine = data[0];
+			/* Machine types changed with the merge. Since the
+			 * bootinfo are now deprecated, we can just hard code
+			 * the appropriate conversion here for when we are
+			 * called with yaboot which passes us a machine type
+			 * this way.
+			 */
+			switch(data[0]) {
+			case 1: _machine = _MACH_prep; break;
+			case 2: _machine = _MACH_Pmac; break;
+			case 4: _machine = _MACH_chrp; break;
+			default:
+				_machine = data[0];
+			}
 			break;
 #endif
 		case BI_MEMSIZE:


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