From b059c637fb858da2bdac3774af4d90d66b2c753b Mon Sep 17 00:00:00 2001
From: Nathan Whitehorn <nwhitehorn@FreeBSD.org>
Date: Fri, 16 Dec 2011 23:40:56 +0000
Subject: [PATCH] Zero BSS on start, in case the ELF loader that started the
 kernel did not do this for us. This can happen on some embedded systems.

Submitted by:	rpaulo
---
 sys/powerpc/aim/locore32.S | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/sys/powerpc/aim/locore32.S b/sys/powerpc/aim/locore32.S
index 020d22d4913d..9ad74fa49f5b 100644
--- a/sys/powerpc/aim/locore32.S
+++ b/sys/powerpc/aim/locore32.S
@@ -128,6 +128,17 @@ __start:
 	sync
 	isync
 
+	/* Zero bss, in case we were started by something unhelpful */
+	li	0,0
+	lis	8,_edata@ha
+	addi	8,8,_edata@l
+	lis	9,_end@ha
+	addi	9,9,_end@l
+2:	stw     0,0(8)
+	addi	8,8,4
+	cmplw	8,9
+	blt	2b
+	
 	/* Save the argument pointer and length */
 	mr	20,6
 	mr	21,7