powerpc: Initialize secondary CPU setup for 32-bit SMP

32-bit SMP powermacs weren't booting with ARCH=powerpc because the
boot cpu wasn't saving away the state of various control registers,
but the secondary CPUs were loading them from the uninitialized
state.  This adds the necessary save-state call.

Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index b102e3a..ccdf947 100644 (file)
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -1100,6 +1100,7 @@ start_here:
        mr      r3,r31
        mr      r4,r30
        bl      machine_init
+       bl      __save_cpu_setup
        bl      MMU_init
 
 #ifdef CONFIG_APUS