[coreboot-gerrit] New patch to review for coreboot: device/pci_rom: support calling pci_rom_probe multiple times

[Patrick Rudolph (siro@das-labor.org)]

Patrick Rudolph (siro at das-labor.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14223

-gerrit

commit 149364945a64d9d8b290187c4226ef3500425fc2
Author: Patrick Rudolph <siro at das-labor.org>
Date:   Thu Mar 31 19:08:53 2016 +0200

    device/pci_rom: support calling pci_rom_probe multiple times
    
    Calling the function twice on the same device causes the rom_address
    to be of by one as the PCI_ROM_ADDRESS_ENABLE bit is set and not
    masked.
    
    Mask the PCI_ROM_ADDRESS_ENABLE bit to always return the same
    rom address.
    
    Change-Id: Iafd8824f66981a3ff08defcdc7ea7e9184fa102c
    Signed-off-by: Patrick Rudolph <siro at das-labor.org>
---
 src/device/pci_rom.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/device/pci_rom.c b/src/device/pci_rom.c
index 56eafef..288a5f0 100644
--- a/src/device/pci_rom.c
+++ b/src/device/pci_rom.c
@@ -65,6 +65,7 @@ struct rom_header *pci_rom_probe(struct device *dev)
 		uintptr_t rom_address;
 
 		rom_address = pci_read_config32(dev, PCI_ROM_ADDRESS);
+		rom_address &= ~PCI_ROM_ADDRESS_ENABLE;
 
 		if (rom_address == 0x00000000 || rom_address == 0xffffffff) {
 #if CONFIG_BOARD_EMULATION_QEMU_X86