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xCAT Network Boot Agent
4f881ae352
The 3Com DOS UNDI driver fails when run on top of gPXE for two reasons: firstly because PXENV_UNDI_SET_PACKET_FILTER is unsupported, and secondly because gPXE enters the NBP without enabling interrupts on the NIC, and the 3Com driver never calls PXENV_UNDI_OPEN. Fix by always returning success from PXENV_UNDI_SET_PACKET_FILTER (which is no worse than the current situation, since we already ignore the receive packet filter in PXENV_UNDI_OPEN), and by forcibly enabling interrupts on the NIC within PXENV_UNDI_TRANSMIT. The latter is something of a hack, but avoids the need to implement a complete base-code ISR that we would otherwise need if we were to enter the NBP with interrupts enabled. |
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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.