| 1 | /*␊ |
| 2 | * platform.c␊ |
| 3 | *␊ |
| 4 | */␊ |
| 5 | ␊ |
| 6 | #include "libsaio.h"␊ |
| 7 | #include "bootstruct.h"␊ |
| 8 | #include "pci.h"␊ |
| 9 | #include "freq_detect.h"␊ |
| 10 | #include "nvidia.h"␊ |
| 11 | #include "spd.h"␊ |
| 12 | #include "platform.h"␊ |
| 13 | ␊ |
| 14 | #ifndef DEBUG_PLATFORM␊ |
| 15 | #define DEBUG_PLATFORM 0␊ |
| 16 | #endif␊ |
| 17 | ␊ |
| 18 | #if DEBUG_PLATFORM␊ |
| 19 | #define DBG(x...)␉printf(x)␊ |
| 20 | #else␊ |
| 21 | #define DBG(x...)␊ |
| 22 | #endif␊ |
| 23 | ␊ |
| 24 | PlatformInfo_t Platform;␊ |
| 25 | ␊ |
| 26 | void scan_cpu_amd()␊ |
| 27 | {␊ |
| 28 | ␉// AMD␊ |
| 29 | ␉␊ |
| 30 | ␉// TODO: Retrieve cpu brand string␊ |
| 31 | ␉// TODO: Retrieve cpu core count␊ |
| 32 | ␉// TODO: Retrieve cpu mobile info␊ |
| 33 | ␉␊ |
| 34 | }␊ |
| 35 | ␊ |
| 36 | void scan_cpu_intel()␊ |
| 37 | {␊ |
| 38 | ␉uint32_t␉cpuid_reg[4];␊ |
| 39 | ␊ |
| 40 | ␉// Get Number of cores per package␊ |
| 41 | ␉/*␊ |
| 42 | ␉ Initially set the EAX register to 4 and the ECX register to 0 prior to executing the CPUID instruction.␊ |
| 43 | ␉ After executing the CPUID instruction, (EAX[31:26] + 1) contains the number of cores.␊ |
| 44 | ␉ */␊ |
| 45 | ␉cpuid_reg[2]=1;␊ |
| 46 | ␉do_cpuid(4, cpuid_reg);␊ |
| 47 | ␉do_cpuid(4, cpuid_reg); // FIXME: why does this only work the 2nd time ?␊ |
| 48 | ␉Platform.CPU.NoCores = bitfield(cpuid_reg[0], 31, 26) + 1;␊ |
| 49 | ␉␊ |
| 50 | ␉// Find Number of Concurrent Threads Processed (HyperThreading) ␊ |
| 51 | ␉do_cpuid(1,cpuid_reg);␊ |
| 52 | ␉if(bitfield(cpuid_reg[1], 23, 16) > 1)␊ |
| 53 | ␉␉Platform.CPU.NoThreads=Platform.CPU.NoCores;␊ |
| 54 | ␉else␊ |
| 55 | ␉␉Platform.CPU.NoThreads=Platform.CPU.NoCores * 2;␊ |
| 56 | ␉␊ |
| 57 | ␉// Mobile CPU ?␊ |
| 58 | ␉if (rdmsr64(0x17) & (1<<28))␊ |
| 59 | ␉␉Platform.CPU.Mobile = 1;␊ |
| 60 | ␉else␊ |
| 61 | ␉␉Platform.CPU.Mobile = 0;␊ |
| 62 | }␊ |
| 63 | ␊ |
| 64 | void scan_platform()␊ |
| 65 | {␊ |
| 66 | ␉uint32_t␉cpuid_reg[4];␊ |
| 67 | ␊ |
| 68 | ␉build_pci_dt();␊ |
| 69 | ␊ |
| 70 | ␉calculate_freq();␊ |
| 71 | ␉␊ |
| 72 | ␉// Copy the values from calculate_freq()␊ |
| 73 | ␉Platform.CPU.TSCFrequency = tscFrequency;␊ |
| 74 | ␉Platform.CPU.FSBFrequency = fsbFrequency;␊ |
| 75 | ␉Platform.CPU.CPUFrequency = cpuFrequency;␊ |
| 76 | ␉␊ |
| 77 | ␉do_cpuid(0, cpuid_reg);␊ |
| 78 | ␉Platform.CPU.Vendor = cpuid_reg[1];␊ |
| 79 | ␉␊ |
| 80 | ␉do_cpuid(1, cpuid_reg);␊ |
| 81 | ␉Platform.CPU.Model = bitfield(cpuid_reg[0], 7, 4);␊ |
| 82 | ␉Platform.CPU.Family = bitfield(cpuid_reg[0], 11, 8);␊ |
| 83 | ␉Platform.CPU.ExtModel = bitfield(cpuid_reg[0], 19, 16);␊ |
| 84 | ␉Platform.CPU.ExtFamily = bitfield(cpuid_reg[0], 27, 20);␊ |
| 85 | ␊ |
| 86 | ␉// Get vendor specific cpu data ␊ |
| 87 | ␉if((Platform.CPU.Vendor == 0x756E6547 /* Intel */) && ((Platform.CPU.Family == 0x06) || (Platform.CPU.Family == 0x0f)))␊ |
| 88 | ␉␉scan_cpu_intel();␊ |
| 89 | ␉else if((Platform.CPU.Vendor == 0x68747541 /* AMD */) && (Platform.CPU.Family == 0x0f))␊ |
| 90 | ␉␉scan_cpu_amd();␊ |
| 91 | }␊ |
| 92 | ␊ |
| 93 | ␊ |
| 94 | |
