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xCAT Network Boot Agent
9737095d49
Define a list of N allowed memory regions, and split each underlying e820 region into up to N subregions. Strip resulting empty regions out of the map, avoiding using the "return with CF set to strip last empty region" trick, because it seems that bootmgr.exe in Win2k8 gets upset if the memory map is terminated with CF set. This is an intermediate checkin that defines a single allowed memory region covering the entire 64-bit address space, and uses the existing map-mangling code on top of the new region-splitting code. This sanitises the memory map to the point that Win2k8 is able to boot even on a system that defines a final zero-length region at the 4GB mark. I'm checking this in because it may be useful for future debugging efforts to be able to run with the existing and known-working map mangling code together with the map sanitisation capabilities of the new map mangling code. |
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gPXE README File gPXE is an implementation of the PXE specification for network booting, with extensions to allow additional features such as booting via HTTP, iSCSI, and AoE. In generally, gPXE is compatible with the industry-standard PXE specification, and also supports Etherboot .nbi file loading and some additional protocols and features. For more detailed information about gPXE, please visit our project website at: http://etherboot.org/ BUILDING gPXE IMAGE FROM SOURCE If you don't want to install development tools, and have access to the Web, you can get gPXE and Etherboot ROM images made on demand from http://rom-o-matic.net/ If you would like to compile gPXE images from source, here are some tips. We normally compile gPXE images on x86, 32-bit Linux machines. It is possible to also use x86-64 machines. We use gcc compiler options to create 32-bit output. It is important to have the necessary software packages installed. A gcc-based toolchain is required. The following packages (at least) are required: - a gcc tool chain (gcc 3.x or gcc 4.x) - binutils - perl - syslinux - mtools To test your environment, cd to the "src" directory and type: make You should see a lot of output, and when it stops, the "bin" directory should be populated with gPXE images and object files. To learn more about what to build and how to use gPXE, please visit our project website at http://etherboot.org/ , particularly the "howto" section. CONTACTING US Pointers to our project mailing lists are on http://etherboot.org/ Real-time help is often available on IRC on the #etherboot channel of irc.freenode.net.