sb600 has problems with the virtual wire mode setup in setup_ioapic(). It causes problems when interrupts are enabled (specifically timer).

Previously the sb600 setup was equivalent to clear_ioapic(), so that is what we will do for now.

Signed-off-by: Marc Jones <marcj303@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5199 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/southbridge/amd/sb600/sb600_sm.c

@@ -58,7 +58,7 @@ static void sm_init(device_t dev)
 
 	ioapic_base = pci_read_config32(dev, 0x74) & (0xffffffe0);	/* some like mem resource, but does not have  enable bit */
 	/* Don't rename APIC ID */
-	setup_ioapic(ioapic_base, 0);
+	clear_ioapic(ioapic_base);
 
 	dword = pci_read_config8(dev, 0x62);
 	dword |= 1 << 2;