From: bwalle@suse.de (Bernhard Walle)
To: kexec@lists.infradead.org
Subject: [PATCH] Update 32 bit boot protocol
Date: Fri, 9 May 2008 18:43:55 +0200 [thread overview]
Message-ID: <20080509164355.GA16830@suse.de> (raw)
This patch updates the boot protocol to match with the kernel. See
Documentation/i386/zero-page.txt in kernel.
The number of E820 map entries have been increased from 32 to 128. The update
is necessary for the next patch that implements EDD support for kexec.
when using the default 32 bit mode.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
---
doc/linux-i386-zero-page.txt | 3 +--
include/x86/x86-linux.h | 2 +-
2 files changed, 2 insertions(+), 3 deletions(-)
--- a/doc/linux-i386-zero-page.txt
+++ b/doc/linux-i386-zero-page.txt
@@ -75,5 +75,4 @@ Offset Type Description
0x224 unsigned short setup.S heap end pointer
0x290 - 0x2cf EDD_MBR_SIG_BUFFER (edd.S)
0x2d0 - 0x600 E820MAP
-0x600 - 0x7ff EDDBUF (edd.S) for disk signature read sector
-0x600 - 0x7eb EDDBUF (edd.S) for edd data
+0xd00 - 0xeec EDDBUF (edd.S) for edd data
--- a/include/x86/x86-linux.h
+++ b/include/x86/x86-linux.h
@@ -4,7 +4,7 @@
#define TENATIVE 0 /* Code that is tenatively correct but hasn't yet been officially accepted */
#define E820MAP 0x2d0 /* our map */
-#define E820MAX 32 /* number of entries in E820MAP */
+#define E820MAX 128 /* number of entries in E820MAP */
#define E820NR 0x1e8 /* # entries in E820MAP */
#ifndef ASSEMBLY
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next reply other threads:[~2008-05-09 16:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-09 16:43 Bernhard Walle [this message]
2008-05-21 6:12 ` [PATCH] Update 32 bit boot protocol Simon Horman
2008-05-21 11:29 ` Bernhard Walle
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