- Add enable_intel_82093aa_ioapic() which enables IOAPIC usage in the
Intel 82371EB southbridge (sets the proper chip-select) and sets an
IOAPIC ID.
- We only call enable_intel_82093aa_ioapic() if a board does "select IOAPIC"
as on 82371EB-based boards the IOAPIC is an external chip (not integrated
in the southbridge) and it's only populated on multi-CPU boards.
That is, we cannot unconditionally enable it, only on SMP-capable boards.
- Due to the reason explained above, remove "select IOAPIC" from
src/southbridge/intel/i82371eb/Kconfig, and add it to
src/mainboard/asus/p2b-d/Kconfig.
- Also set CONFIG_MAX_PHYSICAL_CPUS to 2 on ASUS P2B-D. There are two
CPU sockets (Slot 1) and each CPU can only have one core, multi-core CPUs
didn't exist in that era (CONFIG_MAX_CPUS was set to 2 already).
- Drop useless/duplicated enable_lapic() call from ASUS P2B-D's romstage.c,
that function is always called if either CONFIG_SMP and/or CONFIG_IOAPIC
are set.
- Rework ASUS P2B-D mptable.c to fix a number of things:
- Convert it to use mptable_write_buses() as all mptable.c files should do.
- Fix incorrect IOAPICID (it's 0x11 for the external 82093AA IOAPIC).
- Fix a bunch of hardcoded bus IDs, remove incorrect entries, etc.
This is build-tested on ASUS P2B-D, and also boot-tested successfully there.
On Linux I now get two entries in /proc/cpuinfo (where only one appeared
before this patch), i.e. both populated CPUs are found.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5998 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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