sandy/ivy/nehalem: Remerge interrupt handling

On those chipsets the pins are just a legacy concept. Real interrupts are
messages on corresponding busses or some internal logic of chipset.
Hence interrupt routing isn't anymore board-specific (dependent on layout) but
depends only on configuration.
Rather than attempting to sync real config, ACPI and legacy descriptors, just
use the same interrupt routing per chipset covering all possible devices.

The only part which remains board-specific are LPC and PCI interrupts.

Interrupt balancing may suffer from such merge but:
a) Doesn't seem to be the case of this map on current systems
b) Almost all OS use MSI nowadays bypassing this stuff completely
c) If we want a good balancing we need to take into account that e.g.
   wlan card may be placed in a different slot and so would require complicated
   balancing on runtime. It's difficult to maintain with almost no benefit.

Change-Id: I9f63d1d338c5587ebac7a52093e5b924f6e5ca2d
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7130
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/southbridge/intel/ibexpeak/pch.h b/src/southbridge/intel/ibexpeak/pch.h
index df125f052d..bd94689e78 100644
--- a/src/southbridge/intel/ibexpeak/pch.h
+++ b/src/southbridge/intel/ibexpeak/pch.h
@@ -79,6 +79,7 @@ int smbus_block_read(unsigned device, unsigned cmd, u8 bytes, u8 *buf);
 int smbus_block_write(unsigned device, unsigned cmd, u8 bytes, const u8 *buf);
 int early_spi_read(u32 offset, u32 size, u8 *buffer);
 void early_thermal_init(void);
+void southbridge_configure_default_intmap(void);
 #endif
 #endif