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southbridge/amd/sb700: Enable extended APIC ID when Kconfig option set 

Change-Id: I52fc2c2294edead3b5dacf397c0a1ab2e08b1e3f
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/13160
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
Timothy Pearson 2015-11-24 14:11:58 -06:00 committed by Martin Roth
parent 919c459c17
commit 51c31696f2
1 changed files with 4 additions and 2 deletions
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6
src/southbridge/amd/sb700/sm.c
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@ -308,9 +308,11 @@ static void sm_init(device_t dev)
dword |= 0x1;
pci_write_config32(dev, SB_MMIO_CFG_REG, dword);
}
//ACPI_DISABLE_TIMER_IRQ_ENHANCEMENT_FOR_8254_TIMER
byte = pci_read_config8(dev, 0xAE);
byte |= 1 << 5;
if (IS_ENABLED(CONFIG_ENABLE_APIC_EXT_ID))
byte |= 1 << 4;
byte |= 1 << 5; /* ACPI_DISABLE_TIMER_IRQ_ENHANCEMENT_FOR_8254_TIMER */
byte |= 1 << 6; /* Enable arbiter between APIC and PIC interrupts */
pci_write_config8(dev, 0xAE, byte);
/* 4.11:Programming Cycle Delay for AB and BIF Clock Gating */