PCI: autoconfig: Don't allocate 64-bit addresses to 32-bit only resources

[u-boot] / drivers / pci / pci_auto_common.c

diff --git a/drivers/pci/pci_auto_common.c b/drivers/pci/pci_auto_common.c
index d90dbcf91a2af37a307bf751a09552f07a9cd1cf..183787333e9a83e73e94c98baaa976e60685b97f 100644 (file)
--- a/drivers/pci/pci_auto_common.c
+++ b/drivers/pci/pci_auto_common.c
@@ -32,7 +32,7 @@ void pciauto_region_align(struct pci_region *res, pci_size_t size)
 }
 
 int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
-       pci_addr_t *bar)
+       pci_addr_t *bar, bool supports_64bit)
 {
        pci_addr_t addr;
 
@@ -48,6 +48,11 @@ int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
                goto error;
        }
 
+       if (upper_32_bits(addr) && !supports_64bit) {
+               debug("Cannot assign 64-bit address to 32-bit-only resource\n");
+               goto error;
+       }
+
        res->bus_lower = addr + size;
 
        debug("address=0x%llx bus_lower=0x%llx\n", (unsigned long long)addr,