From: Paul Mackerras <paulus@samba.org>
Date: Fri, 11 Nov 2005 11:34:43 +0000 (+1100)
Subject: powerpc: Initialize secondary CPU setup for 32-bit SMP
X-Git-Tag: firefly_0821_release~40138^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=22c841c9a465a6b29a6140fcc5dae9fdb3c8674d;p=firefly-linux-kernel-4.4.55.git

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 b102e3a2415e..ccdf94731e30 100644
--- 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