[syslinux:master] com32/chain: add support for ReactOS's freeldr. sys

[syslinux-bot for Michal Soltys]

Commit-ID:  fabff8a517d0d55b0b1434e3c915849b7407d445
Gitweb:     http://www.syslinux.org/commit/fabff8a517d0d55b0b1434e3c915849b7407d445
Author:     Michal Soltys <soltys at ziu.info>
AuthorDate: Tue, 10 May 2011 13:30:58 +0200
Committer:  Michal Soltys <soltys at ziu.info>
CommitDate: Tue, 10 May 2011 13:54:05 +0200

com32/chain: add support for ReactOS's freeldr.sys

Based on commit: ad4cf1470977f648ee1dd45e97939589ccb0393c

(might need address adjustments)

Signed-off-by: Michal Soltys <soltys at ziu.info>

---
 com32/chain/options.c |   15 +++++++++++++++
 doc/chain.txt         |    6 ++++++
 2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/com32/chain/options.c b/com32/chain/options.c
index 791bcbb..a897c32 100644
--- a/com32/chain/options.c
+++ b/com32/chain/options.c
@@ -95,6 +95,7 @@ Usage:\n\
                          - ommited o/i values default to 0\n\
     isolinux=<loader>    Load another version of ISOLINUX\n\
     ntldr=<loader>       Load Windows NTLDR, SETUPLDR.BIN or BOOTMGR\n\
+    reactos=<loader>     Load ReactOS's loader\n\
     cmldr=<loader>       Load Recovery Console of Windows NT/2K/XP/2003\n\
     freedos=<loader>     Load FreeDOS KERNEL.SYS\n\
     msdos=<loader>       Load MS-DOS 2.xx - 6.xx IO.SYS\n\
@@ -169,6 +170,20 @@ int opt_parse_args(int argc, char *argv[])
 	    opt.setbpb = true;
 	    /* opt.save = true; */
 	    opt.hand = false;
+	} else if (!strncmp(argv[i], "reactos=", 8)) {
+	    /*
+	     * settings based on commit
+	     *   ad4cf1470977f648ee1dd45e97939589ccb0393c
+	     * note, conflicts with:
+	     *   http://reactos.freedoors.org/Reactos%200.3.13/ReactOS-0.3.13-REL-src/boot/freeldr/notes.txt
+	     */
+	    opt.fseg = 0;
+	    opt.foff = 0x8000;
+	    opt.fip = 0x8100;
+	    opt.file = argv[i] + 8;
+	    opt.setbpb = true;
+	    /* opt.save = true; */
+	    opt.hand = false;
 	} else if (!strncmp(argv[i], "cmldr=", 6)) {
 	    opt.fseg = 0x2000;  /* CMLDR wants this address */
 	    opt.foff = 0;
diff --git a/doc/chain.txt b/doc/chain.txt
index b655e94..f7826d4 100644
--- a/doc/chain.txt
+++ b/doc/chain.txt
@@ -260,6 +260,12 @@ corrected BPB values.
 Prepares to load recovery console directly. In-memory copy of bootsector is
 patched with "cmdcons\0". Remarks the same as in 'ntldr='.
 
+	reactos=<file>
+	sets: file=<file> seg=0:0x8000:0x8100 setbpb nohand
+
+Prepares to load ReactOS's freeldr directly. You might want to add 'save'
+option to store corrected BPB values.
+
 	freedos=<file>
 	sets: file=<file> seg=0x60 sect=0x1FE0 setbpb nohand