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>
diff --git a/src/mainboard/intel/emeraldlake2/romstage.c b/src/mainboard/intel/emeraldlake2/romstage.c
index 220b1d7..d50093e 100644
--- a/src/mainboard/intel/emeraldlake2/romstage.c
+++ b/src/mainboard/intel/emeraldlake2/romstage.c
@@ -73,43 +73,7 @@
{
u32 reg32;
- /*
- * GFX INTA -> PIRQA (MSI)
- * D28IP_P1IP WLAN INTA -> PIRQB
- * D28IP_P4IP ETH0 INTB -> PIRQC
- * D29IP_E1P EHCI1 INTA -> PIRQD
- * D26IP_E2P EHCI2 INTA -> PIRQE
- * D31IP_SIP SATA INTA -> PIRQF (MSI)
- * D31IP_SMIP SMBUS INTB -> PIRQG
- * D31IP_TTIP THRT INTC -> PIRQH
- * D27IP_ZIP HDA INTA -> PIRQG (MSI)
- */
-
- /* Device interrupt pin register (board specific) */
- RCBA32(D31IP) = (INTC << D31IP_TTIP) | (NOINT << D31IP_SIP2) |
- (INTB << D31IP_SMIP) | (INTA << D31IP_SIP);
- RCBA32(D30IP) = (NOINT << D30IP_PIP);
- RCBA32(D29IP) = (INTA << D29IP_E1P);
- RCBA32(D28IP) = (INTA << D28IP_P1IP) | (INTC << D28IP_P3IP) |
- (INTB << D28IP_P4IP);
- RCBA32(D27IP) = (INTA << D27IP_ZIP);
- RCBA32(D26IP) = (INTA << D26IP_E2P);
- RCBA32(D25IP) = (NOINT << D25IP_LIP);
- RCBA32(D22IP) = (NOINT << D22IP_MEI1IP);
-
- /* Device interrupt route registers */
- DIR_ROUTE(D31IR, PIRQF, PIRQG, PIRQH, PIRQA);
- DIR_ROUTE(D29IR, PIRQD, PIRQE, PIRQF, PIRQG);
- DIR_ROUTE(D28IR, PIRQB, PIRQC, PIRQD, PIRQE);
- DIR_ROUTE(D27IR, PIRQG, PIRQH, PIRQA, PIRQB);
- DIR_ROUTE(D26IR, PIRQE, PIRQF, PIRQG, PIRQH);
- DIR_ROUTE(D25IR, PIRQA, PIRQB, PIRQC, PIRQD);
- DIR_ROUTE(D22IR, PIRQA, PIRQB, PIRQC, PIRQD);
-
- /* Enable IOAPIC (generic) */
- RCBA16(OIC) = 0x0100;
- /* PCH BWG says to read back the IOAPIC enable register */
- (void) RCBA16(OIC);
+ southbridge_configure_default_intmap();
/* Disable unused devices (board specific) */
reg32 = RCBA32(FD);