[coreboot] question about mapping of registers to I/O locations
shadravan.fontanov at googlemail.com
Tue Nov 4 22:37:31 CET 2008
citation from datasheet of ICH5/ICH5R chipset
"These registers are enabled in the PCI Device 31: Function 0 space
(PM_IO_EN), and can be
moved to any I/O location (128-byte aligned)."
I didnt understand, who moves the registers in the i/o space -- BIOS,
or linux kernel? Is there a default value for PMBASE (0x800), at which
the registers are visible after starting the machine, without the need
of explicit i/o mapping?
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