diff options
Diffstat (limited to 'src/cpu/amd')
| -rw-r--r-- | src/cpu/amd/model_fxx/fidvid.c | 6 | ||||
| -rw-r--r-- | src/cpu/amd/model_fxx/powernow_acpi.c | 89 |
2 files changed, 73 insertions, 22 deletions
diff --git a/src/cpu/amd/model_fxx/fidvid.c b/src/cpu/amd/model_fxx/fidvid.c index bbafde6662..6395a1e1c6 100644 --- a/src/cpu/amd/model_fxx/fidvid.c +++ b/src/cpu/amd/model_fxx/fidvid.c @@ -347,13 +347,17 @@ static void init_fidvid_ap(unsigned bsp_apicid, unsigned apicid) u32 fid_max; int loop; + if((cpuid_edx(0x80000007)&0x06)!=0x06) { + return; /* FID/VID change not supported */ + } + msr = rdmsr(0xc0010042); fid_max = ((msr.lo >> 16) & 0x3f); /* max fid */ #if FX_SUPPORT if (fid_max >= ((25 - 4) * 2)) { /* FX max fid is 5G */ fid_max = ((msr.lo >> 8) & 0x3f) + 5 * 2; /* maxFID = minFID + 1G */ if (fid_max >= ((25 - 4) * 2)) { - fid_max = (10 - 4) * 2; // hard set to 2G + fid_max = (10 - 4) * 2; /* hard set to 2G */ } } #endif diff --git a/src/cpu/amd/model_fxx/powernow_acpi.c b/src/cpu/amd/model_fxx/powernow_acpi.c index bbcf013b13..83d34f1058 100644 --- a/src/cpu/amd/model_fxx/powernow_acpi.c +++ b/src/cpu/amd/model_fxx/powernow_acpi.c @@ -586,15 +586,27 @@ static int pstates_algorithm(u32 pcontrol_blk, u8 plen, u8 onlyBSP) u8 cmp_cap; struct cpuentry *data = NULL; uint32_t control; - int i = 0, index, len = 0, Pstate_num = 0; + int i = 0, index = 0, len = 0, Pstate_num = 0, dev = 0; msr_t msr; - u8 Pstate_fid[10]; - u16 Pstate_feq[10]; - u8 Pstate_vid[10]; - u32 Pstate_power[10]; + u8 Pstate_fid[MAXP+1]; + u16 Pstate_feq[MAXP+1]; + u8 Pstate_vid[MAXP+1]; + u32 Pstate_power[MAXP+1]; u8 Max_fid, Start_fid, Start_vid, Max_vid; - struct cpuid_result cpuid1 = cpuid(0x80000001); + struct cpuid_result cpuid1; + + /* See if the CPUID(0x80000007) returned EDX[2:1]==11b */ + cpuid1 = cpuid(0x80000007); + if((cpuid1.edx & 0x6)!=0x6) { + printk(BIOS_INFO, "Processor not capable of performing P-state transitions\n"); + return 0; + } + cpuid1 = cpuid(0x80000001); + + /* It has been said that we can safely assume that all CPU's + * in the system have the same SYSCONF values + */ msr = rdmsr(0xc0010042); Max_fid = (msr.lo & 0x3F0000) >> 16; Max_vid = (msr.hi & 0x3F0000) >> 16; @@ -620,24 +632,51 @@ static int pstates_algorithm(u32 pcontrol_blk, u8 plen, u8 onlyBSP) return 0; } - /* IRT 80us, PLL_LOCK_TIME 2us, MVS 25mv, VST 100us */ - control = (3 << 30) | (2 << 20) | (0 << 18) | (5 << 11) | (1 << 29); +#if CONFIG_MAX_PHYSICAL_CPUS==1 + /* IRT 80us RVO = 50mV PLL_LOCK_TIME 2us, MVS 25mv, VST 100us */ + control = (3 << 30) | (2 << 28) | (2 << 20) | (0 << 18) | (5 << 11); +#else + /* MP-systems should default to RVO=0mV (no ramp voltage) */ + /* IRT 80us RVO = 0mV PLL_LOCK_TIME 2us, MVS 25mv, VST 100us */ + + control = (3 << 30) | (0 << 28) | (2 << 20) | (0 << 18) | (5 << 11); +#endif + /* RVO (Ramp Voltage Offset) + * 00 0mV (default for MP-systems) + * 01 25mV + * 10 50mV (default) + * 11 75mV + * IRT (Isochronous Release Time) + * 00 10uS + * 01 20uS + * 10 40uS + * 11 80uS (default) + * MVS (Maximum Voltage Step) + * 00 25mV (default) + * 01 50mV (reserved) + * 10 100mV (reserved) + * 11 200mV (reserved) + * VST (Voltage Stabilization Time) + * time = value*20uS (default value: 5 => 100uS) + * PLL_LOCK_TIME + * time = value*1uS (often seen value: 2uS) + */ + len = 0; - Pstate_num = 0; - Pstate_fid[Pstate_num] = Max_fid; - Pstate_feq[Pstate_num] = fid_to_freq(Max_fid); - Pstate_vid[Pstate_num] = Max_vid; - Pstate_power[Pstate_num] = data->pwr * 100; - Pstate_num++; + Pstate_fid[0] = Max_fid; + Pstate_feq[0] = fid_to_freq(Max_fid); + Pstate_vid[0] = Max_vid; + Pstate_power[0] = data->pwr * 100; - do { + for(Pstate_num = 1; + (Pstate_num <= MAXP) && (data->pstates[Pstate_num - 1].freqMhz != 0); + Pstate_num++) { Pstate_fid[Pstate_num] = freq_to_fid(data->pstates[Pstate_num - 1].freqMhz) & 0x3f; Pstate_feq[Pstate_num] = data->pstates[Pstate_num - 1].freqMhz; Pstate_vid[Pstate_num] = vid_to_reg(data->pstates[Pstate_num - 1].voltage); Pstate_power[Pstate_num] = data->pstates[Pstate_num - 1].tdp * 100; - Pstate_num++; - } while ((Pstate_num < MAXP) && (data->pstates[Pstate_num - 1].freqMhz != 0)); + } for (i=0;i<Pstate_num;i++) printk(BIOS_DEBUG, "P#%d freq %d [MHz] voltage %d [mV] TDP %d [mW]\n", i, @@ -645,11 +684,19 @@ static int pstates_algorithm(u32 pcontrol_blk, u8 plen, u8 onlyBSP) vid_from_reg(Pstate_vid[i]), Pstate_power[i]); - for (index = 0; index < (cmp_cap + 1); index++) { - len += write_pstates_for_core(Pstate_num, Pstate_feq, Pstate_vid, - Pstate_fid, Pstate_power, index, - pcontrol_blk, plen, onlyBSP, control); + /* Loop over all CPU's */ + for (dev = 0x18; dev < 0x1c; dev++) { + if(dev_find_slot(0, PCI_DEVFN(dev, 0)) == NULL) + continue; + + for (i = 0; i < (cmp_cap + 1); i++) { + len += write_pstates_for_core(Pstate_num, Pstate_feq, Pstate_vid, + Pstate_fid, Pstate_power, index+i, + pcontrol_blk, plen, onlyBSP, control); + } + index += i; } + printk(BIOS_DEBUG,"%d Processor objects emitted to SSDT\n",index); return len; } |