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| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-12-03 08:04:31 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-12-04 12:22:39 +0000 |
| commit | c08fdf3decc6a61a9020a7df484d92473f7223e9 (patch) | |
| tree | ea4bd090075ea9075e0e00f0ba89b3d9f60df4fd /src/vendorcode/amd/pi | |
| parent | b6161be9de85f4e05d755dfeb2d5b56c63c9f8d8 (diff) | |
binaryPI: Fix failing AP startup
Fix regression with commit 5639736
binaryPI: Drop CAR teardown without POSTCAR_STAGE
Occassionally (maybe 1 boot in 10) SMP lapic_cpu_init() fails
with following errors in the logs of pcengines/apu2:
CPU 0x03 would not start!
CPU 0x03 did not initialize!
The CPU number is sometimes 0x02, never seen 0x01. Work-around also
suggests something to do with cache coherency and MTRRs that is really
at fault.
As a work-around return the BSP CAR teardown to use wbinvd instead
of invd. These platforms do not support S3 resume so this is the
easy work-around for the time being.
Change-Id: I3dac8785aaf4af5c7c105ec9dd0b95156b7cca21
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37438
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/vendorcode/amd/pi')
| -rw-r--r-- | src/vendorcode/amd/pi/00630F01/binaryPI/gcccar.inc | 3 | ||||
| -rw-r--r-- | src/vendorcode/amd/pi/00660F01/binaryPI/gcccar.inc | 3 | ||||
| -rw-r--r-- | src/vendorcode/amd/pi/00730F01/binaryPI/gcccar.inc | 3 |
3 files changed, 6 insertions, 3 deletions
diff --git a/src/vendorcode/amd/pi/00630F01/binaryPI/gcccar.inc b/src/vendorcode/amd/pi/00630F01/binaryPI/gcccar.inc index 4d903e686f..cecf5ca230 100644 --- a/src/vendorcode/amd/pi/00630F01/binaryPI/gcccar.inc +++ b/src/vendorcode/amd/pi/00630F01/binaryPI/gcccar.inc @@ -904,7 +904,8 @@ fam15_disable_stack_remote_read_exit: btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion _WRMSR - invd + # An invd here sometimes breaks AP CPU startup ? + wbinvd #.if (bh == 01h) || (bh == 03h) ; Is this TN or KV? cmp $01, %bh diff --git a/src/vendorcode/amd/pi/00660F01/binaryPI/gcccar.inc b/src/vendorcode/amd/pi/00660F01/binaryPI/gcccar.inc index b208cc14ca..88e1a7d1be 100644 --- a/src/vendorcode/amd/pi/00660F01/binaryPI/gcccar.inc +++ b/src/vendorcode/amd/pi/00660F01/binaryPI/gcccar.inc @@ -639,7 +639,8 @@ fam15_disable_stack_remote_read_exit: btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion _WRMSR - invd + # An invd here sometimes breaks AP CPU startup ? + wbinvd # #.if (bh == 01h) || (bh == 03h) ; Is this TN or KM? # cmp $01, %bh diff --git a/src/vendorcode/amd/pi/00730F01/binaryPI/gcccar.inc b/src/vendorcode/amd/pi/00730F01/binaryPI/gcccar.inc index 7d86a31c69..c246b99395 100644 --- a/src/vendorcode/amd/pi/00730F01/binaryPI/gcccar.inc +++ b/src/vendorcode/amd/pi/00730F01/binaryPI/gcccar.inc @@ -603,7 +603,8 @@ fam16_disable_stack_remote_read_exit: btr $INVD_WBINVD, %eax # Disable INVD -> WBINVD conversion _WRMSR - invd + # An invd here sometimes breaks AP CPU startup + wbinvd #Do Standard Family 16 work mov $HWCR, %ecx # MSR:C001_0015h |