[coreboot] [patch][v2] fam10 AP CAR cleanup

-- Marc Jones Senior Firmware Engineer (970) 226-9684 Office mailto:Marc.Jones@amd.com http://www.amd.com/embeddedprocessors On APs the ClLinesToNbDis was being left enabled from CAR setup. Disabling it should help performance. Signed-off-by: Marc Jones marc.jones@amd.com Index: coreboot-v2/src/cpu/amd/model_10xxx/init_cpus.c =================================================================== --- coreboot-v2.orig/src/cpu/amd/model_10xxx/init_cpus.c 2008-04-23 17:08:42.000000000 -0600 +++ coreboot-v2/src/cpu/amd/model_10xxx/init_cpus.c 2008-04-23 17:11:01.000000000 -0600 @@ -295,6 +295,13 @@ static void STOP_CAR_AND_CPU() { + msr_t msr; + + /* Disable L2 IC to L3 connection (Only for CAR) */ + msr = rdmsr(BU_CFG2); + msr.lo &= ~(1 << ClLinesToNbDis); + wrmsr(BU_CFG2, msr); + disable_cache_as_ram(); // inline stop_this_cpu(); }