diff options
| -rw-r--r-- | hw/gt64xxx.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/hw/gt64xxx.c b/hw/gt64xxx.c index 84e041fcfc..ccb6a7c1a2 100644 --- a/hw/gt64xxx.c +++ b/hw/gt64xxx.c @@ -229,9 +229,12 @@ static void gt64120_pci_mapping(GT64120State *s) target_phys_addr_t start, length; /* Update IO mapping */ - start = s->regs[GT_PCI0IOLD] << 21; - length = ((s->regs[GT_PCI0IOHD] + 1) - (s->regs[GT_PCI0IOLD] & 0x7f)) << 21; - isa_mmio_init(start, length); + if ((s->regs[GT_PCI0IOLD] & 0x7f) <= s->regs[GT_PCI0IOHD]) + { + start = s->regs[GT_PCI0IOLD] << 21; + length = ((s->regs[GT_PCI0IOHD] + 1) - (s->regs[GT_PCI0IOLD] & 0x7f)) << 21; + isa_mmio_init(start, length); + } } static void gt64120_writel (void *opaque, target_phys_addr_t addr, |