pc-bios/bios-pq/0016-use-correct-mask-to-size-pci-option-rom-bar.patch

   1 Subject: [PATCH] bios: Use the correct mask to size the PCI option ROM BAR
   2 From:   Alex Williamson <alex.williamson@hp.com>
   3
   4 Bit 0 is the enable bit, which we not only don't want to set, but
   5 it will stick and make us think it's an I/O port resource.
   6
   7 Signed-off-by: Alex Williamson <alex.williamson@hp.com>
   8 Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
   9 ---
  10
  11 diff --git a/bios/rombios32.c b/bios/rombios32.c
  12 index d7e18e9..f861f81 100644
  13 --- a/bios/rombios32.c
  14 +++ b/bios/rombios32.c
  15 @@ -985,11 +985,13 @@ static void pci_bios_init_device(PCIDevice *d)
  16              int ofs;
  17              uint32_t val, size ;
  18
  19 -            if (i == PCI_ROM_SLOT)
  20 +            if (i == PCI_ROM_SLOT) {
  21                  ofs = 0x30;
  22 -            else
  23 +                pci_config_writel(d, ofs, 0xfffffffe);
  24 +            } else {
  25                  ofs = 0x10 + i * 4;
  26 -            pci_config_writel(d, ofs, 0xffffffff);
  27 +                pci_config_writel(d, ofs, 0xffffffff);
  28 +            }
  29              val = pci_config_readl(d, ofs);
  30              if (val != 0) {
  31                  size = (~(val & ~0xf)) + 1;
  32
  33