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Add PCI command activation to all PCI drivers as required for coreboot

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and maybe some other firmwares.
This commit is contained in:
Vladimir Serbinenko 2013-11-26 14:21:11 +01:00
parent 9208367d3f
commit 1e4b358720
7 changed files with 55 additions and 18 deletions
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11
grub-core/bus/usb/ehci.c
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@ -534,11 +534,20 @@ grub_ehci_pci_iter (grub_pci_device_t dev, grub_pci_id_t pciid,
"EHCI grub_ehci_pci_iter: registers above 4G are not supported\n");
return 0;
}
base &= GRUB_PCI_ADDR_MEM_MASK;
if (!base)
{
grub_dprintf ("ehci",
"EHCI: EHCI is not mapped\n");
return 0;
}
/* Set bus master - needed for coreboot, VMware, broken BIOSes etc. */
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_PCI_COMMAND_MEM_ENABLED
| GRUB_PCI_COMMAND_BUS_MASTER
| grub_pci_read_word(addr));
grub_dprintf ("ehci", "EHCI grub_ehci_pci_iter: 32-bit EHCI OK\n");
}