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-rw-r--r--hw/sparc64/sun4u.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index eda9b58..cff6d5a 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -360,8 +360,13 @@ static void ebus_realize(PCIDevice *pci_dev, Error **errp)
pci_dev->config[0x09] = 0x00; // programming i/f
pci_dev->config[0x0D] = 0x0a; // latency_timer
- memory_region_init_alias(&s->bar0, OBJECT(s), "bar0",
- pci_address_space_io(pci_dev), 0, 0x1000000);
+ /*
+ * BAR0 is accessed by OpenBSD but not for ebus device access: allow any
+ * memory access to this region to succeed which allows the OpenBSD kernel
+ * to boot.
+ */
+ memory_region_init_io(&s->bar0, OBJECT(s), &unassigned_io_ops, s,
+ "bar0", 0x1000000);
pci_register_bar(pci_dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar0);
memory_region_init_alias(&s->bar1, OBJECT(s), "bar1",
pci_address_space_io(pci_dev), 0, 0x8000);