[LinuxBIOS] Winflashrom -- Current Status
kononov at dls.net
Mon Jul 30 16:30:28 CEST 2007
Darmawan Salihun wrote:
> As I couldn't find any better replacement to the PCI direct I/O
> function at the moment (which is needed in chipset_enable and
> board_enable), I will try to implement them using a quite old kernel
> mode API, i.e. HalGetBusData and HalSetBusData. I hope the kernel
> "emulates" these functions so that it works like in NT4 and Windows
A more "portable" way:
Make all CPUs spinning inside a DPC function:
KeQueryActiveProcessors() is used to get all processors.
KeSetTargetProcessorDpc() is used to tie the DPC function and particular
When all CPUs are spinning inside the function, one of them does IO
(CF8/CFC) to the PCI configuration space.
After the IO completes, let all DPC functions finish.
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