Hi Frank,
You are probably right - it might be the problem with PCI bus master
settings! The same problem was solved in UHCI driver for coreboot by
Rock some time ago.
Try this patch, please:
@@ -533,6 +533,11 @@ grub_ehci_pci_iter (grub_pci_device_t de
"EHCI grub_ehci_pci_iter: registers above 4G are not
supported\n");
return 0;
}
+
+ /* Set bus master - needed for coreboot or broken BIOSes (and
VMware?) */
+ addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
+ grub_pci_write_word(addr,
+ GRUB_PCI_COMMAND_BUS_MASTER | grub_pci_read_word(addr));
grub_dprintf ("ehci", "EHCI grub_ehci_pci_iter: 32-bit EHCI OK
\n");
}
BR,
Ales
yanxiang fang wrote:
> Hi, Ales.
>
> I studied linux ehci driver which can work well in vmware. But found
> nothing useful, mybe because it is too complex. So I turned to
> other simpler OS to find some useful thing.
>
> I don't know anything about PCI. Do you think this problem having
> something to do with PCI configuration?
>
> BR,
>
> frank
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
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