Change in coreboot[master]: soc/amd/cezanne: Disable Co-op multitasking

[Raul Rangel (Code Review)]

Raul Rangel has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/57005 )

Change subject: soc/amd/cezanne: Disable Co-op multitasking
......................................................................

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: [e-mail]
Signed-off-by: Raul E Rangel 
Change-Id: Ia3143f538a31b5aaaea104aa1d8bcf44e6dcb528
---
M src/soc/amd/cezanne/Kconfig
1 file changed, 0 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/05/57005/1

diff --git a/src/soc/amd/cezanne/Kconfig b/src/soc/amd/cezanne/Kconfig
index 306f181..81597d0 100644
--- a/src/soc/amd/cezanne/Kconfig
+++ b/src/soc/amd/cezanne/Kconfig
@@ -18,7 +18,6 @@
    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 @@
    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