pciexp_device: Propagate above-4G flag to all hotplug devices
The `IORESOURCE_ABOVE_4G` flag was only explicitly set for our dummy
device that reserves resources behind a hotplug port. The current re-
source allocator implicitly extends this to all devices below the port,
including real ones. Let's make that explicit, so future changes to the
allocator can't break this rule.
Change-Id: Id4c90b60682cf5c8949cde25362d286625b3e953
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66719
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
diff --git a/src/device/pci_device.c b/src/device/pci_device.c
index 232328d..52107f2f 100644
--- a/src/device/pci_device.c
+++ b/src/device/pci_device.c
@@ -164,8 +164,12 @@
/* A Memory mapped base address. */
attr &= PCI_BASE_ADDRESS_MEM_ATTR_MASK;
resource->flags |= IORESOURCE_MEM;
- if (attr & PCI_BASE_ADDRESS_MEM_PREFETCH)
+ if (attr & PCI_BASE_ADDRESS_MEM_PREFETCH) {
resource->flags |= IORESOURCE_PREFETCH;
+ if (CONFIG(PCIEXP_HOTPLUG_PREFETCH_MEM_ABOVE_4G)
+ && dev_path_hotplug(dev))
+ resource->flags |= IORESOURCE_ABOVE_4G;
+ }
attr &= PCI_BASE_ADDRESS_MEM_LIMIT_MASK;
if (attr == PCI_BASE_ADDRESS_MEM_LIMIT_32) {
/* 32bit limit. */