From 5f80e7c764b9a1cb46beeaa490a4f60be04abcd4 Mon Sep 17 00:00:00 2001 From: Raul E Rangel Date: Tue, 17 Aug 2021 17:31:17 -0600 Subject: soc/amd/cezanne: Disable Co-op multitasking There are gremlins in the system. thread_coop_enable has an assert. This is currently problematic for two reasons. assert(current->can_yield <= 0); When doing smm_do_relocate we are entering a deadlock. The root cause hasn't been quite found yet, but it's related to co-op multi-threading. For some reason the assert in thread_coop_enable is firing when releasing the console_lock spin lock. I'm assuming cpu_info hasn't been initialized yet. The assert tries to perform a printk, but since the console_lock is still held we end up in a dead lock. This dead lock will generally not happen after a warm reset. Again I'm assuming because the cpu_info struct has some valid values at this point. For now disable multi-tasking until we fix the cpu_info initialization. BUG=b:194391185 TEST=Boot guybrush to OS Co-developed-by: nikolai.vyssotski@amd.corp-partner.google.com Signed-off-by: Raul E Rangel Change-Id: Ia3143f538a31b5aaaea104aa1d8bcf44e6dcb528 Reviewed-on: https://review.coreboot.org/c/coreboot/+/57005 Reviewed-by: Karthik Ramasubramanian Reviewed-by: Nikolai Vyssotski Reviewed-by: Jason Glenesk Reviewed-by: Rob Barnes Reviewed-by: Felix Held Tested-by: build bot (Jenkins) --- src/soc/amd/cezanne/Kconfig | 2 -- 1 file changed, 2 deletions(-) diff --git a/src/soc/amd/cezanne/Kconfig b/src/soc/amd/cezanne/Kconfig index 306f181dd0..81597d075c 100644 --- a/src/soc/amd/cezanne/Kconfig +++ b/src/soc/amd/cezanne/Kconfig @@ -18,7 +18,6 @@ config SOC_SPECIFIC_OPTIONS select BOOT_DEVICE_SUPPORTS_WRITES if BOOT_DEVICE_SPI_FLASH select DRIVERS_USB_ACPI select DRIVERS_I2C_DESIGNWARE - select COOP_MULTITASKING select DRIVERS_USB_PCI_XHCI select FSP_COMPRESS_FSP_M_LZMA select FSP_COMPRESS_FSP_S_LZMA @@ -31,7 +30,6 @@ config SOC_SPECIFIC_OPTIONS select IDT_IN_EVERY_STAGE select IOAPIC select PARALLEL_MP_AP_WORK - select PAYLOAD_PRELOAD select PLATFORM_USES_FSP2_0 select PROVIDES_ROM_SHARING select RESET_VECTOR_IN_RAM -- cgit v1.2.3