Messages in this thread | | | From | Kyle Moffett <> | Subject | Re: [RFC][PATCH] PCI bridge driver rewrite (rev 02) | Date | Mon, 7 Mar 2005 23:56:44 -0500 |
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On Mar 07, 2005, at 19:20, Adam Belay wrote: > 6.) Open Firmware > * I don't know much about it, but I believe it does do similar > things to ACPI. > * Hopefully it uses EISA ids, but not really sure. If not, it > wouldn't be included.
OpenFirmware is very similar to ACPI, except OpenFirmware interprets the FORTH programs in the firmware itself, whereas ACPI does it in the OS. The reason for the difference is that on Intel/x86 there is no compatible way to call directly into the firmware from 32-bit code. You won't find the two on the same system, and they basically provide the same services: device tree, power management, etc.
Cheers, Kyle Moffett
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