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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-06-27 06:10:38 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-07-01 04:18:41 +0000 |
| commit | 6bdaaefb3077938b86a65725a7732c992a0b2328 (patch) | |
| tree | 3022f9e85948e0cb6331c69add42c2492457d208 /src/cpu/intel/common | |
| parent | 86dbe0f3072d87830b073bd4f372961f924e6df0 (diff) | |
| download | coreboot-6bdaaefb3077938b86a65725a7732c992a0b2328.tar.xz | |
intel/fsp_rangeley: Use fixed FSB/BCLK value 100 MHz
Prior to commit
d731a24 src/cpu/intel: Set get_ia32_fsb function common
value of 200 was silently used as a default for fsp_rangeley
(model_406dx) in cpu/x86/lapic/apic_timer:set_timer_fsb().
After the commit, get_ia32_fsb() returns -2, eventually
resulting with divide-by-zero in timer_monotonic_get(), as
get_timer_fsb() returns 0.
Add Rangeley CPUID model 0x4d to get_ia32_fsb() as a fix,
using BCLK = 100 MHz based on the comments in
northbridge/intel/fsp_rangeley/udelay.c
Change-Id: I306f85dba9b1e91539fc0ecc9b2ae9d54f82be6c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33822
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Diffstat (limited to 'src/cpu/intel/common')
| -rw-r--r-- | src/cpu/intel/common/fsb.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/cpu/intel/common/fsb.c b/src/cpu/intel/common/fsb.c index 83220de3bc..d66e87a396 100644 --- a/src/cpu/intel/common/fsb.c +++ b/src/cpu/intel/common/fsb.c @@ -46,6 +46,7 @@ static int get_fsb(void) case 0x3a: /* IvyBridge BCLK fixed at 100MHz */ case 0x3c: /* Haswell BCLK fixed at 100MHz */ case 0x45: /* Haswell-ULT BCLK fixed at 100MHz */ + case 0x4d: /* Rangeley BCLK fixed at 100MHz */ ret = 100; break; } |