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authorKyösti Mälkki <kyosti.malkki@gmail.com>2013-06-05 07:19:31 +0300
committerRonald G. Minnich <rminnich@gmail.com>2013-06-12 05:19:39 +0200
commit8351243e4a99c7159ec3257db272b735efff218c (patch)
tree7f71f21f953707cd732aa9201af40c194b0f7fba /src/southbridge/intel/i82801cx
parent083d35551c5cce5c26e5bc19f400878727594869 (diff)
Fix i82801a/b/c/d IOAPIC
Setting IRQ delivery to FSB got lost in the rebase process for commit e6143531. I captured following error on dmesg and this patch fixes it for i82801dx. ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 ..MP-BIOS bug: 8254 timer not connected to IO-APIC ...trying to set up timer (IRQ0) through the 8259A ... ..... (found apic 0 pin 2) ... ....... failed. ...trying to set up timer as Virtual Wire IRQ... ..... works. Change-Id: I0768976cc6b0deab213ad9bd4771e0f278de634c Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/3371 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Diffstat (limited to 'src/southbridge/intel/i82801cx')
-rw-r--r--src/southbridge/intel/i82801cx/lpc.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82801cx/lpc.c b/src/southbridge/intel/i82801cx/lpc.c
index 79998bc722..f9c0ece4fe 100644
--- a/src/southbridge/intel/i82801cx/lpc.c
+++ b/src/southbridge/intel/i82801cx/lpc.c
@@ -42,6 +42,12 @@ static void i82801cx_enable_ioapic(struct device *dev)
printk(BIOS_DEBUG, "IOAPIC Southbridge enabled %x\n", reg32);
set_ioapic_id(IO_APIC_ADDR, 0x02);
+
+ /*
+ * Select Boot Configuration register (0x03) and
+ * use Processor System Bus (0x01) to deliver interrupts.
+ */
+ io_apic_write(IO_APIC_ADDR, 0x03, 0x01);
}
// This is how interrupts are received from the Super I/O chip