diff options
Diffstat (limited to 'hw/pci-host')
| -rw-r--r-- | hw/pci-host/piix.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c index ad55f99663..1cb25f3fa6 100644 --- a/hw/pci-host/piix.c +++ b/hw/pci-host/piix.c @@ -117,6 +117,11 @@ struct PCII440FXState { #define I440FX_PAM_SIZE 7 #define I440FX_SMRAM 0x72 +/* Older coreboot versions (4.0 and older) read a config register that doesn't + * exist in real hardware, to get the RAM size from QEMU. + */ +#define I440FX_COREBOOT_RAM_SIZE 0x57 + static void piix3_set_irq(void *opaque, int pirq, int level); static PCIINTxRoute piix3_route_intx_pin_to_irq(void *opaque, int pci_intx); static void piix3_write_config_xen(PCIDevice *dev, @@ -394,7 +399,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state, if (ram_size > 255) { ram_size = 255; } - d->config[0x57] = ram_size; + d->config[I440FX_COREBOOT_RAM_SIZE] = ram_size; i440fx_update_memory_mappings(f); |