delta/syslinux.git/com32/modules, branch lua git.kernel.org: pub/scm/boot/syslinux/syslinux.git ifplop.c32: Detect if PLoP USB/CD INT13h hook is enabled/disabled 2010-07-01T20:39:34+00:00 Gert Hulselmans gerth@zytor.com 2010-07-01T15:57:44+00:00 01dc2ad8336cc9dbd76f1e74cd4fec2e45334797 New module which detects if the PLoP Boot Loader already has booted a CDROM or USB drive by checking for the presence of the PLoP INT13h hook. The following assembly code (NASM) can detect the PLoP INT13h hook: mov eax,'PoLP' ; Reverse of 'PLoP' mov ebp,'DKHC' ; Reverse of 'CHKD' int 13h cmp eax,' sey' ; Reverse of 'yes ' jz plop_INT13h_active Signed-off-by: Gert Hulselmans <gerth@zytor.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> 
New module which detects if the PLoP Boot Loader already has booted a
CDROM or USB drive by checking for the presence of the PLoP INT13h hook.

The following assembly code (NASM) can detect the PLoP INT13h hook:

  mov eax,'PoLP'  ; Reverse of 'PLoP'
  mov ebp,'DKHC'  ; Reverse of 'CHKD'
  int 13h
  cmp eax,' sey'  ; Reverse of 'yes '
  jz plop_INT13h_active

Signed-off-by: Gert Hulselmans <gerth@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
config.c32: accept an optional new directory 2010-06-28T21:37:45+00:00 H. Peter Anvin hpa@linux.intel.com 2010-06-28T21:37:45+00:00 3502961e0405a274619c5ca88cc9bc467c80709a Accept an optional new directory to config.c32, just as we permit for the CONFIG statement. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> 
Accept an optional new directory to config.c32, just as we permit for
the CONFIG statement.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
chain.c32: pass partition number to stage2 of Grub Legacy 2010-06-28T01:25:44+00:00 Gert Hulselmans gerth@zytor.com 2010-06-28T01:11:48+00:00 8c3bfcedff660798039129e66c29a440c7b5a464 Grub Legacy stage2 will read the install_partition variable from memory address 0x8208. We only need to change the value at 0x820a to the correct partition number: -1: whole drive (default) 0-3: primary partitions 4-*: logical partitions Signed-off-by: Gert Hulselmans <gerth@zytor.com> 
Grub Legacy stage2 will read the install_partition variable from
memory address 0x8208.
We only need to change the value at 0x820a to the correct partition
number:
  -1:   whole drive (default)
  0-3:  primary partitions
  4-*:  logical partitions

Signed-off-by: Gert Hulselmans <gerth@zytor.com>
chain.c32: only pass partition number in DH, when grldr= is used 2010-06-28T01:04:28+00:00 Gert Hulselmans gerth@zytor.com 2010-06-28T00:42:58+00:00 3a74aa5230b81ef83612d02f7c405915afc5e64b Add grldr= as boot parameter, so the partition number is only passed to grub4dos grldr, when grldr= is used. Currently the partition number is passed in DH unconditionally. As consequence, grldr will set its root partition on which is searches its menu.lst to (hd0), because -1 (whole drive) is passed in DH as root partition: chain.c32 file=/grldr When the conditional check, this problem is solved: chain.c32 file=/grldr Grub4dos will search all partitions for its menu.lst When you want to set the root partition, use something like the following: chain.c32 hd0,2 grldr=/grldr chain.c32 fs grldr=/grldr Signed-off-by: Gert Hulselmans <gerth@zytor.com> 
Add grldr= as boot parameter, so the partition number is only passed to
grub4dos grldr, when grldr= is used.

Currently the partition number is passed in DH unconditionally.
As consequence, grldr will set its root partition on which is searches its
menu.lst to (hd0), because -1 (whole drive) is passed in DH as root partition:
  chain.c32 file=/grldr

When the conditional check, this problem is solved:
  chain.c32 file=/grldr
Grub4dos will search all partitions for its menu.lst

When you want to set the root partition, use something like the following:
  chain.c32 hd0,2 grldr=/grldr
  chain.c32 fs grldr=/grldr

Signed-off-by: Gert Hulselmans <gerth@zytor.com>
chain.c32: add keeppxe to usage output and cleanup comments 2010-06-28T00:36:24+00:00 Gert Hulselmans gerth@zytor.com 2010-06-28T00:13:39+00:00 87940ddbab18a5dcf8f82bf737abcf99fb1ede7b Add keeppxe to usage output. Cleanup some comments. 
Add keeppxe to usage output.
Cleanup some comments.
Export the 64-bit partition offset and use it in chain.c 2010-06-27T19:02:48+00:00 H. Peter Anvin hpa@zytor.com 2010-06-27T19:02:48+00:00 b775b0040fe57ef71ec9cd98f9c124a3d116269b When used with the "fs" option to chain.c32, we need to know our own filesystem offset. That means knowing if we used the MBR vs GPT partition information, as well as if we ended up using the passed-in information or not. Resolve this by providing an explicit pointer to the current partition offset. Eventually this should be replaced by some kind of statfs() call. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
When used with the "fs" option to chain.c32, we need to know our own
filesystem offset.  That means knowing if we used the MBR vs GPT
partition information, as well as if we ended up using the passed-in
information or not.

Resolve this by providing an explicit pointer to the current partition
offset.  Eventually this should be replaced by some kind of statfs()
call.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
chain.c32: fix handover to a logical partition 2010-06-27T01:07:59+00:00 H. Peter Anvin hpa@zytor.com 2010-06-27T01:07:59+00:00 6d3918a893e83267342ebd6b7d5c03cad4f27635 Make sure the handover information to a logical partition is adjusted correctly -- we can't just hand over the partition entry, but we have to adjust start_lba to match the real start LBA. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Make sure the handover information to a logical partition is adjusted
correctly -- we can't just hand over the partition entry, but we have
to adjust start_lba to match the real start LBA.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
pwd.c32: add to Makefile 2010-06-26T22:03:02+00:00 H. Peter Anvin hpa@zytor.com 2010-06-26T22:03:02+00:00 f6f72bd64722876fa6684d293dc659cf5c141a39 Actually *build* pwd.c32... Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Actually *build* pwd.c32...

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
chain.c32: "fs" is a singular token, only match if complete 2010-06-26T21:57:14+00:00 H. Peter Anvin hpa@zytor.com 2010-06-26T21:57:14+00:00 571b20b3daaf32c0dffde0bb513cb256a8a41f03 fs is a full token, not a prefix. Reported-by: Gert Hulselmans <gerth@zytor.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
fs is a full token, not a prefix.

Reported-by: Gert Hulselmans <gerth@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
com32 pwd module 2010-06-26T19:34:07+00:00 Gene Cumm gene.cumm@gmail.com 2010-06-26T14:59:46+00:00 e9654e598bab36d0c5218163263baf4105db5ae0 [MODULE] pwd to list present (current) working directory. If the returned string is empty, display ".". If the return value is NULL, display an error message. Unfortunately, it appears that COM32 getcwd is not working properly at this moment, it calling the COMBOOT call and getting an empty string. Signed-off-by: Gene Cumm <gene.cumm@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
[MODULE] pwd to list present (current) working directory.  If the
returned string is empty, display ".".  If the return value is NULL,
display an error message.

Unfortunately, it appears that COM32 getcwd is not working properly at
this moment, it calling the COMBOOT call and getting an empty string.

Signed-off-by: Gene Cumm <gene.cumm@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>