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https://github.com/Fennix-Project/Kernel.git
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71 lines
2.7 KiB
C++
71 lines
2.7 KiB
C++
#include "smbios.hpp"
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#include <debug.h>
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#include "../kernel.h"
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/* https://www.dmtf.org/sites/default/files/standards/documents/DSP0134_3.2.0.pdf */
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namespace SMBIOS
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{
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bool CheckSMBIOS()
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{
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if (bInfo->SMBIOSPtr != nullptr && bInfo->SMBIOSPtr < (void *)0xffffffffffff0000)
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{
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debug("SMBIOS is available (%#lx).", bInfo->SMBIOSPtr);
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return true;
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}
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debug("SMBIOS is not available. (%#lx)", bInfo->SMBIOSPtr);
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return false;
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}
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SMBIOSEntryPoint *GetSMBIOSEntryPoint() { return (SMBIOSEntryPoint *)bInfo->SMBIOSPtr; }
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static inline int SMBIOSTableLength(SMBIOSHeader *Hdr)
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{
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int i;
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const char *strtab = (char *)Hdr + Hdr->Length;
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for (i = 1; strtab[i - 1] != '\0' || strtab[i] != '\0'; i++)
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;
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return Hdr->Length + i + 1;
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}
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void *GetSMBIOSHeader(SMBIOSType Type)
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{
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if (!CheckSMBIOS())
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return nullptr;
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SMBIOSEntryPoint *Header = (SMBIOSEntryPoint *)bInfo->SMBIOSPtr;
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debug("Getting SMBIOS header for type %d", Type);
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struct SMBIOSHeader *hdr = (SMBIOSHeader *)(uintptr_t)Header->TableAddress;
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for (int i = 0; i <= 11; i++)
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{
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if (hdr < (void *)(uintptr_t)(Header->TableAddress + Header->TableLength))
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if (hdr->Type == Type)
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{
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debug("Found SMBIOS header for type %d at %#lx", Type, hdr);
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return hdr;
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}
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hdr = (struct SMBIOSHeader *)((uintptr_t)hdr + SMBIOSTableLength(hdr));
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}
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return nullptr;
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}
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SMBIOSBIOSInformation *GetBIOSInformation() { return (SMBIOSBIOSInformation *)GetSMBIOSHeader(SMBIOSTypeBIOSInformation); }
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SMBIOSSystemInformation *GetSystemInformation() { return (SMBIOSSystemInformation *)GetSMBIOSHeader(SMBIOSTypeSystemInformation); }
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SMBIOSBaseBoardInformation *GetBaseBoardInformation() { return (SMBIOSBaseBoardInformation *)GetSMBIOSHeader(SMBIOSTypeBaseBoardInformation); }
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SMBIOSProcessorInformation *GetProcessorInformation() { return (SMBIOSProcessorInformation *)GetSMBIOSHeader(SMBIOSTypeProcessorInformation); }
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SMBIOSMemoryArray *GetMemoryArray() { return (SMBIOSMemoryArray *)GetSMBIOSHeader(SMBIOSTypePhysicalMemoryArray); }
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SMBIOSMemoryDevice *GetMemoryDevice() { return (SMBIOSMemoryDevice *)GetSMBIOSHeader(SMBIOSTypeMemoryDevice); }
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SMBIOSMemoryArrayMappedAddress *GetMemoryArrayMappedAddress() { return (SMBIOSMemoryArrayMappedAddress *)GetSMBIOSHeader(SMBIOSTypeMemoryArrayMappedAddress); }
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SMBIOSMemoryDeviceMappedAddress *GetMemoryDeviceMappedAddress() { return (SMBIOSMemoryDeviceMappedAddress *)GetSMBIOSHeader(SMBIOSTypeMemoryDeviceMappedAddress); }
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}
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