diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-04-16 09:43:40 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2014-04-20 20:03:55 +0200 |
| commit | a6c525a7d5ad0dedc31dcc9719be6bc5fbc743dd (patch) | |
| tree | e789fe63a0581050c35f07806d6854ed7f82d08d /src/southbridge | |
| parent | 35546deba642d3bb341d329fc1b9711727a5c50e (diff) | |
AMD AGESA cimx/sb700: Drop APIC_ID_OFFSET and MAX_PHYSICAL_CPUS
Following boards use cimx/sb700:
amd/dinar
supermicro/h8qgi
supermicro/h8scm
tyan/s8226
Only amd/dinar had APIC_ID_OFFSET defined, thus all had 0x0.
There was a nonsense preprocessor directive (MAX_CPUS * MAX_PHYSICAL_CPUS >= 1).
Except for tyan, (MAX_CPUS * MAX_PHYSICAL_CPUS) % 256 == 0.
Together with documented 4-bit restriction for APIC ID field, this APIC ID
programming matches with MP tables and ACPI tables.
I believe this would also fix cases of cimx/sb700 with MAX_CPUS<16, which
we do not have in the tree.
Change-Id: If8d65e95788ba02fc8d331a7af03a4d0d8cf5c69
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5539
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/amd/cimx/sb700/late.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/src/southbridge/amd/cimx/sb700/late.c b/src/southbridge/amd/cimx/sb700/late.c index b03f13a45f..96050830fb 100644 --- a/src/southbridge/amd/cimx/sb700/late.c +++ b/src/southbridge/amd/cimx/sb700/late.c @@ -218,22 +218,15 @@ static void sb700_enable(device_t dev) case (0x14 << 3) | 0: /* 0:14:0 SMBUS */ { -#if 1 u32 ioapic_base; printk(BIOS_DEBUG, "sm_init().\n"); ioapic_base = IO_APIC_ADDR; clear_ioapic(ioapic_base); /* I/O APIC IDs are normally limited to 4-bits. Enforce this limit. */ -#if (CONFIG_APIC_ID_OFFSET == 0 && CONFIG_MAX_CPUS * CONFIG_MAX_PHYSICAL_CPUS >= 1) - /* Assign the ioapic ID the next available number after the processor core local APIC IDs */ - setup_ioapic(ioapic_base, (UINT8) (CONFIG_MAX_CPUS * CONFIG_MAX_PHYSICAL_CPUS)); -#elif (CONFIG_APIC_ID_OFFSET > 0) - /* Assign the ioapic ID the value 0. Processor APIC IDs follow. */ - setup_ioapic(ioapic_base, 0); -#else -#error "The processor APIC IDs must be lifted to make room for the I/O APIC ID" -#endif -#endif + if (CONFIG_MAX_CPUS >= 16) + setup_ioapic(ioapic_base, 0); + else + setup_ioapic(ioapic_base, CONFIG_MAX_CPUS + 1); } break; |