diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2013-08-09 10:02:22 +0200 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2013-08-15 20:37:48 +0200 |
| commit | a4e70578db9268c4f9847ba43e754f3e95d7a4e5 (patch) | |
| tree | 014036bfc34d28bb949d8266dbb5b7f03671b7e6 /src | |
| parent | 1e1a1798faf9715ceb2bd34b619c3c21f03ce89a (diff) | |
qemu: fix ioapic reservation
The slightly hackish ioapic ressource reservation is needed for i440fx
emulation only, for q35 the ich9 southbridge driver handles this just
fine.
[ Side note: The i440fx chipset emulated by qemu is pimped up with alot
of stuff which never existed on real hardware, which leads
to tweaks like this one. ]
Change-Id: I06bf54cbc247ccf17aa9063fb7dee9def323c605
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-on: http://review.coreboot.org/3850
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/emulation/qemu-i440fx/northbridge.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/src/mainboard/emulation/qemu-i440fx/northbridge.c b/src/mainboard/emulation/qemu-i440fx/northbridge.c index f975b6cdc4..c08d59e795 100644 --- a/src/mainboard/emulation/qemu-i440fx/northbridge.c +++ b/src/mainboard/emulation/qemu-i440fx/northbridge.c @@ -52,6 +52,9 @@ static void cpu_pci_domain_set_resources(device_t dev) static void cpu_pci_domain_read_resources(struct device *dev) { + u16 nbid = pci_read_config16(dev_find_slot(0, 0), PCI_DEVICE_ID); + int i440fx = (nbid == 0x1237); +// int q35 = (nbid == 0x29c0); struct resource *res; unsigned long tomk = 0, high; int idx = 10; @@ -89,14 +92,17 @@ static void cpu_pci_domain_read_resources(struct device *dev) high_tables_size = HIGH_MEMORY_SIZE; #endif - /* Reserve space for the IOAPIC. This should be in the Southbridge, - * but I couldn't tell which device to put it in. */ - res = new_resource(dev, 2); - res->base = IO_APIC_ADDR; - res->size = 0x100000UL; - res->limit = 0xffffffffUL; - res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | - IORESOURCE_ASSIGNED; + if (i440fx) { + /* Reserve space for the IOAPIC. This should be in + * the Southbridge, but I couldn't tell which device + * to put it in. */ + res = new_resource(dev, 2); + res->base = IO_APIC_ADDR; + res->size = 0x100000UL; + res->limit = 0xffffffffUL; + res->flags = IORESOURCE_MEM | IORESOURCE_FIXED | + IORESOURCE_STORED | IORESOURCE_ASSIGNED; + } /* Reserve space for the LAPIC. There's one in every processor, but * the space only needs to be reserved once, so we do it here. */ |