From f8eeaaf4180334a8e5c3582fe62a5f8176a8c124 Mon Sep 17 00:00:00 2001
From: "H. Peter Anvin" <hpa@zytor.com>
Date: Tue, 6 Sep 2005 15:17:24 -0700
Subject: [PATCH] Make the bzImage format self-terminating
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Frank Sorenson <frank@tuxrocks.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
arch/i386/boot/setup.S | 2 +-
arch/i386/boot/tools/build.c | 4 +++-
2 files changed, 4 insertions(+), 2 deletions(-)
(limited to 'arch/i386')
diff --git a/arch/i386/boot/setup.S b/arch/i386/boot/setup.S
index 8cb420f40c5..ca668d9df16 100644
--- a/arch/i386/boot/setup.S
+++ b/arch/i386/boot/setup.S
@@ -82,7 +82,7 @@ start:
# This is the setup header, and it must start at %cs:2 (old 0x9020:2)
.ascii "HdrS" # header signature
- .word 0x0203 # header version number (>= 0x0105)
+ .word 0x0204 # header version number (>= 0x0105)
# or else old loadlin-1.5 will fail)
realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
start_sys_seg: .word SYSSEG
diff --git a/arch/i386/boot/tools/build.c b/arch/i386/boot/tools/build.c
index 6835f6d47c3..05798419a6a 100644
--- a/arch/i386/boot/tools/build.c
+++ b/arch/i386/boot/tools/build.c
@@ -177,7 +177,9 @@ int main(int argc, char ** argv)
die("Output: seek failed");
buf[0] = (sys_size & 0xff);
buf[1] = ((sys_size >> 8) & 0xff);
- if (write(1, buf, 2) != 2)
+ buf[2] = ((sys_size >> 16) & 0xff);
+ buf[3] = ((sys_size >> 24) & 0xff);
+ if (write(1, buf, 4) != 4)
die("Write of image length failed");
return 0; /* Everything is OK */
--
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