[Xen-changelog] [xen-unstable] rombios: fix int13h for floppy disk

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1225373227 0
# Node ID e8f0e625e043cd71e61dc6fb6124a3367298bbfe
# Parent  85a2a54c70c866b3dc0802a0bbb7b9c9c0881fcd
rombios: fix int13h for floppy disk

A floppy on HVM can't be read correctly.
This fix is taken from upstream bochs-2.3.7.

Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
---
 tools/firmware/rombios/rombios.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -r 85a2a54c70c8 -r e8f0e625e043 tools/firmware/rombios/rombios.c
--- a/tools/firmware/rombios/rombios.c  Wed Oct 29 19:06:52 2008 +0000
+++ b/tools/firmware/rombios/rombios.c  Thu Oct 30 13:27:07 2008 +0000
@@ -7216,7 +7216,7 @@ BX_INFO("floppy: drive>1 || head>1 ...\n
         outb(0x03f5, head);
         outb(0x03f5, sector);
         outb(0x03f5, 2); // 512 byte sector size
-        outb(0x03f5, 0); // last sector number possible on track
+        outb(0x03f5, sector + num_sectors - 1); // last sector to read on track
         outb(0x03f5, 0); // Gap length
         outb(0x03f5, 0xff); // Gap length
 
@@ -7364,7 +7364,7 @@ BX_INFO("floppy: drive>1 || head>1 ...\n
         outb(0x03f5, head);
         outb(0x03f5, sector);
         outb(0x03f5, 2); // 512 byte sector size
-        outb(0x03f5, 0); // last sector number possible on track
+        outb(0x03f5, sector + num_sectors - 1); // last sector to write on 
track
         outb(0x03f5, 0); // Gap length
         outb(0x03f5, 0xff); // Gap length
 

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