From: Paul Mackerras <paulus@samba.org>
Date: Mon, 17 Oct 2005 10:13:47 +0000 (+1000)
Subject: powerpc: Clear the BSS at the start of early_init with ARCH=ppc
X-Git-Tag: v2.6.15-rc1~59^2~161
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd184343b45e94fd3b0d4d0865070924bc6195ab;p=linux-2.6

powerpc: Clear the BSS at the start of early_init with ARCH=ppc

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

diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index e68f848f24..b95f7cf693 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -294,6 +294,10 @@ unsigned long __init early_init(unsigned long dt_ptr)
 {
 	unsigned long offset = reloc_offset();
 
+	/* First zero the BSS -- use memset_io, some platforms don't have
+	 * caches on yet */
+	memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
+
 	/*
 	 * Identify the CPU type and fix up code sections
 	 * that depend on which cpu we have.