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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 /Documentation/codeflow.svg
parentb6161be9de85f4e05d755dfeb2d5b56c63c9f8d8 (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>
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