[coreboot] Dealing with PCI reset
paulepanter at users.sourceforge.net
Sun Dec 11 22:48:27 CET 2016
Dear coreboot folks,
Several devices using the Intel 945 chipset copied code for PCI reset,
costing 200 ms of boot time.
/* Force PCIRST# */
pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
udelay(200 * 1000);
pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
The change-set Ia37d9f0ecf5655531616edb20b53757d5d47b42f  removes
that code from the Lenovo X60.
That code was added for some crypto card on a Roda device.
My question is, if removing that code is fine, or if it should be left
in and be made configurable (Kconfig/NVRAM)?
Are there often cases where there are extensions card with problems,
that need such a PCI reset?
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 195 bytes
Desc: This is a digitally signed message part
More information about the coreboot