Changes required to the device allocator:

- leave a hole for mmapped PCIe config space if CONFIG_PCIE_CONFIGSPACE_HOLE
  is set.
- Mask moving bits to 32bit when resources are not supposed above 4G. Linux
  does not like this, even though the resource is disabled.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Myles Watson <mylesgw@gmail.com>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3699 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/config/Options.lb

@@ -1115,6 +1115,12 @@ define CONFIG_GX1_VIDEOMODE
 # 4 for 1280x1024
 end
 
+define CONFIG_PCIE_CONFIGSPACE_HOLE
+	default 0
+	export always
+	comment "Leave a hole for PCIe config space in the device allocator"
+end
+
 ###############################################
 # Board specific options
 ###############################################

src/devices/device.c

@@ -366,6 +366,12 @@ void compute_allocate_resource(
 				(resource->flags & IORESOURCE_IO)? "io":
 				(resource->flags & IORESOURCE_PREFETCH)? "prefmem": "mem");
 		}
+#if CONFIG_PCIE_CONFIGSPACE_HOLE
+#warning Handle PCIe hole differently...
+		if (base >= 0xf0000000 && base < 0xf4000000) {
+			base = 0xf4000000;
+		}
+#endif
 	}
 	/* A pci bridge resource does not need to be a power
 	 * of two size, but it does have a minimum granularity.

src/devices/pci_device.c

@@ -377,7 +377,11 @@ static void pci_record_bridge_resource(
 		 * clear it and forget it.
 		 */
 		if (resource->size == 0) {
+#if CONFIG_PCI_64BIT_PREF_MEM == 1
 			resource->base = moving;
+#else
+			resource->base = moving & 0xffffffff;
+#endif
 			resource->flags |= IORESOURCE_ASSIGNED;
 			resource->flags &= ~IORESOURCE_STORED;
 			pci_set_resource(dev, resource);