Am 12.10.2010 06:08, schrieb Scott Duplichan: > I find with my RS780/SB700 board (ECS A780GM-M3), the initial > family 10h AP launch is not reliable. I often see a hang when > when all the cores are running in parallel. The parallel execution > is apparent if serial logging is enabled, because the characters > logged by each core are interleaved. I noticed the AP cores do a > few cf8/cfc pci config writes. Could simultaneous access to this > shared index/data pair be responsible for the hang? Concerns about > such conflicts is why the AMD agesa code does not run cores on the > same die in parallel. This probably happens in the code that determines the CPUID, right? I worked around this by reading until the CPUID is != 0xffffffff (which is an invalid value, but the value that a failed read returns). It's a hack, but it worked for me.
Patrick -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
