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Michael Brown
f5828201ea
Clearing the CR0.EM and CR0.TS flags is a prerequisite for using the AES-NI instructions for AES hardware acceleration: if CR0.EM is set then the CPU will raise an undefined-instruction exception, and if CR0.TS is set then the CPU will raise a device-not-available exception (expecting the OS to have installed an exception handler that would perform a deferred context switch of the FPU/MMX/SSE registers). Preserve CR0 across virt_call(), to allow the CR0.EM and CR0.TS flags to be modified as needed. Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE network bootloader
iPXE is the leading open source network boot firmware. It provides a full PXE implementation enhanced with additional features such as:
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boot from a web server via HTTP or HTTPS,
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boot from an iSCSI, FCoE, or AoE SAN,
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control the boot process with a script,
You can use iPXE to replace the existing PXE ROM on your network card, or you can chainload into iPXE to obtain the features of iPXE without the hassle of reflashing.
iPXE is free, open-source software licensed under the GNU GPL (with some portions under GPL-compatible licences).
You can download the rolling release binaries (built from the latest commit), or use the most recent stable release.
For full documentation, visit the iPXE website.