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authorKyösti Mälkki <kyosti.malkki@gmail.com>2019-12-03 08:04:31 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2019-12-04 12:22:39 +0000
commitc08fdf3decc6a61a9020a7df484d92473f7223e9 (patch)
treeea4bd090075ea9075e0e00f0ba89b3d9f60df4fd /src/vendorcode/amd/pi
parentb6161be9de85f4e05d755dfeb2d5b56c63c9f8d8 (diff)
downloadcoreboot-c08fdf3decc6a61a9020a7df484d92473f7223e9.tar.xz
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.inc3
-rw-r--r--src/vendorcode/amd/pi/00660F01/binaryPI/gcccar.inc3
-rw-r--r--src/vendorcode/amd/pi/00730F01/binaryPI/gcccar.inc3
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