similar to: Contributing to the COM32 Libc

Hi Everyone, This question might be a long shot, but is it possible to mix and match com32 programs written against Syslinux 3 with com32 programs written against Syslinux 4 without recompiling. We are trying to have our com32 programs run with different versions of Syslinux without modification. Appreciate any advice, thanks in advance.

Hi, I'm working on a com32 module in which I need to get some file size. The only way I found was to include the "lib/sys/file.h" header file and get the i.length field from the file_info structure (once a file descriptor is open). I understand that this structure is internal to the Com32 file I/O implementation and should not be accessed from com32 modules. So is there a

Hi! i'm kinda investigating the possibility of using COM32 to manage an in-house installation method. For this to work, we need to have network access (HTTP preferred) from within COM32 itself. That or any kind of query/response type of network access. This is an example of what we could use: GET /somewhere/blah.asp?MACHINE=THIS and parse the response from the server. We're completely

Hey guys, I can't seem to figure out how to debug a COM32 app with GDB under qemu. I start "qemu -s" and then "gdb hello.elf ; target remote:1234" but can't set any breakpoints that work. I"m using syslinux4 (pathbased from the repo). Can anyone verify that they can use qemu+com32+gdb with something as simple as com32/samples/hello.c32 ? Also, is it

I need to do PCIe memory mapped configuration space access from a com32 module. (ECAM, memory mapped, not CAM, which uses I/O port access). I know how to find the base address to the config space in Linux and use ECAM to access configuration registers. com32/lib/pci does not use ECAM. In Linux the region for ECAM is referred to as PCI MMCONFIG. (often shows up as e0000000-efffffff, see

Hello, Would com32 modules be considered the same as an ordinary Linux executable with respect to LGPL? That is, as long as you released any changes to syslinux/com32 libs would you also have to release the source to the com32 module? Thanks for your time.

Hello, As it is known, Syslinux loads COM32 modules to 0x101000 (the PM IDT is at 0x100000). Unfortunately, in my project this area of memory is already occupied by another program that I need to preserve for a while (specifically, until Syslinux's COM32 module boots up the OS kernel). In other words, I need to load and execute COM32 modules from other than 0x101000 area of memory (for

Hi, I'm using SYSLINUX as a boot loader to my OS's. Before booting my OS's, I want to check for existence of some files on my hard drives (NTFS and ext3 as well). I think using COM32 modules to access to file system. I want some resources to learn more about COM32 modules and especially accessing file system using COM32 modules. Any help would highly appreciated. Thanks, Mortaza

This module is able to power off a system via APM. It replaces the poweroff COMBOOT module. Signed-off-by: Sebastian Herbszt <herbszt at gmx.de> --- com32/modules/Makefile | 2 +- com32/modules/poweroff.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 89 insertions(+), 1 deletions(-) create mode 100644 com32/modules/poweroff.c diff --git

I have written a COM32 program which pxelinux loads it and executes when machine is booted over network. And the COM32 program should be blocked till it receives an instruction from deployment server in UDP packet. I am looking for a network interrupt that will make my machine to wait for an incoming udp packet, so that my server can send udp packet, and reboot/shutdown the machine. I would

Hi all, I need the Com32 binary so I can use it on my project. Or, maybe anyone can make the COM32 library as a single API file so I can easly call it after my .c32 is running?

Hello Erwan and others, I am running HDT from grub2 with memdisk. I have informed the success of booting hdt to the grub2 list. Some developers are very much interested to this issue and they are showing their interest to make a glue between com32 and grub2 so that hdt can be loaded without memdisk. It is really very exciting to have hdt as an inbuilt feature of grub2. Could any one kindly

Hi, in syslinux-386, I think I've found a problem in com32/lib/syslinux/load_linux.c that leads to cmdline being truncated unnecessarily when e.g. linux.c32 is used. The patch below fixes the problem for me. But I don't know, whether the patch is safe in all cases. I tried to reproduce the logic found in runkernel.inc, but I might have missed something. So, feel free to tell me

For the read-only shell that I'm working on, I'm running into a slight snag. I'm trying to build a paging command (emulating the function of more). It seems get_key() is probably the best function to use for obtaining just a single key sequence. On my first run, I tried to call console_ansi_raw(), then get_key() then console_ansi_std() to change it back to a more normal mode. When

Hi all, I used syslinux to load linux on DiskOnChip in PC104 for one embbeded project suceefully for several months. But due to power lost sometime the image is corrupted. I want to develop a COM32 util to check CRC for the images and load the good ones. I read in the comboot.doc that com32 can use read file SYSLINUX API call to read a file, and the file must below 64K limit. But the image files

Q: Is there a way to do a reboot (either warm or cold) from a com32 program? I have a com32 program that sometimes (based upon conditions) needs to reboot the system. I would prefer to do a warm reboot (40:72 = 0x1234), but at this point cold would be OK too. grepping through syslinux-3.51 I only found one reference, in iso/pxelinux.asm at the tail end of 'kaboom' ... but presumably

From: Matt Fleming <matt.fleming at linux.intel.com> Partially revert "com32: add a centralized bitops header" This reverts part of commit db74cf6c4182f40ecf7fad1f04799d09d82f896d. The usage of the centralized bitops in com32/lib/vsscanf.c is not correct because the bitmap that we're accessing is too large for the 'bt', 'bts' and 'btc' instructions to

Hi everybody, is it possible to set the pxelinux.reboottime from a COM32 module? I'm aware of the DHCP option, but I'd like to tweak this parameter according to some logic in my COM32 code before I access a file via fread()/TFTP. Thank, Ulrich

I am new to 32-bit programming in DOS. So this might be a stupid question. How do I access an absolute memory location in my COM32 code. If I understand it correctly, all the memory addresses use virtual addresses. I need to write code to read an absolute location in memory Is it as simple as answer = *(unsigned char *)MK_PTR(seg,ofs) or does the fact that the COM32 code is runing using

Summary ======= I am having trouble with com32 API call AX=0014h [3.10] Local boot [PXELINUX, ISOLINUX] Input: AX 0014h DX Local boot parameter Output: Does not return My observation is that is returning from the call and is not localbooting the system. Detail ====== I am using a com32 program to configure some hardware before I boot from the local