diff options
Diffstat (limited to 'src/cpu/amd')
| -rw-r--r-- | src/cpu/amd/model_10xxx/fidvid.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/cpu/amd/model_10xxx/fidvid.c b/src/cpu/amd/model_10xxx/fidvid.c index 53a5f18751..d621f8ddf2 100644 --- a/src/cpu/amd/model_10xxx/fidvid.c +++ b/src/cpu/amd/model_10xxx/fidvid.c @@ -85,6 +85,58 @@ static void enableNbPState1( device_t dev ) { } } +static u8 setPStateMaxVal( device_t dev ) { + u8 i,maxpstate=0; + for (i = 0; i < NM_PS_REG; i++) { + msr_t msr = rdmsr(PS_REG_BASE + i); + if (msr.hi & PS_IDD_VALUE_MASK) { + msr.hi |= PS_EN_MASK ; + wrmsr(PS_REG_BASE + i, msr); + } + if (msr.hi | PS_EN_MASK) { + maxpstate = i; + } + } + //FIXME: CPTC2 and HTC_REG should get max per node, not per core ? + u32 reg = pci_read_config32(dev, CPTC2); + reg &= PS_MAX_VAL_MASK; + reg |= (maxpstate << PS_MAX_VAL_POS); + pci_write_config32(dev, CPTC2,reg); + return maxpstate; +} + +static void dualPlaneOnly( device_t dev ) { + // BKDG 2.4.2.7 + + u32 cpuRev = mctGetLogicalCPUID(0xFF); + if ((mctGetProcessorPackageType() == AMD_PKGTYPE_AM3_2r2) + && (cpuRev & AMD_DR_Cx)) { // should be rev C or rev E but there's no constant for E + if ( (pci_read_config32(dev, 0x1FC) & DUAL_PLANE_ONLY_MASK) + && (pci_read_config32(dev, 0xA0) & PVI_MODE) ){ + if (cpuid_edx(0x80000007) & CPB_MASK) { + // revision E only, but E is apparently not supported yet, therefore untested + msr_t minPstate = rdmsr(0xC0010065); + wrmsr(0xC0010065, rdmsr(0xC0010068) ); + wrmsr(0xC0010068,minPstate); + } else { + msr_t msr; + msr.lo=0; msr.hi=0; + wrmsr(0xC0010064, rdmsr(0xC0010068) ); + wrmsr(0xC0010068, msr ); + } + + //FIXME: CPTC2 and HTC_REG should get max per node, not per core ? + u8 maxpstate = setPStateMaxVal(dev); + + u32 reg = pci_read_config32(dev, HTC_REG); + reg &= HTC_PS_LMT_MASK; + reg |= (maxpstate << PS_LIMIT_POS); + pci_write_config32(dev, HTC_REG,reg); + + } + } +} + static void setVSRamp(device_t dev) { /* BKDG r31116 2010-04-22 2.4.1.7 step b F3xD8[VSRampTime] * If this field accepts 8 values between 10 and 500 us why @@ -819,6 +871,7 @@ static void init_fidvid_stage2(u32 apicid, u32 nodeid) dtemp |= PLLLOCK_DFT_L; pci_write_config32(dev, 0xA0, dtemp); + dualPlaneOnly(dev); enableNbPState1(dev); finalPstateChange(); |