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Check CPUID info, switch cpu flag to Broadwell

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Justin C. Miller
2018-04-29 23:50:56 -07:00
parent 99222d8ab9
commit 2d4e7cfdee
4 changed files with 117 additions and 0 deletions
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40
src/kernel/cpu.h Normal file
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#pragma once
class cpu_id
{
public:
struct regs {
uint32_t eax, ebx, ecx, edx;
regs() : eax(0), ebx(0), ecx(0), edx(0) {}
regs(uint32_t a, uint32_t b, uint32_t c, uint32_t d) : eax(a), ebx(b), ecx(c), edx(d) {}
regs(const regs &r) : eax(r.eax), ebx(r.ebx), ecx(r.ecx), edx(r.edx) {}
bool eax_bit(unsigned bit) { return (eax >> bit) & 0x1; }
bool ebx_bit(unsigned bit) { return (ebx >> bit) & 0x1; }
bool ecx_bit(unsigned bit) { return (ecx >> bit) & 0x1; }
bool edx_bit(unsigned bit) { return (edx >> bit) & 0x1; }
};
cpu_id();
regs get(uint32_t leaf, uint32_t sub = 0) const;
inline const char * vendor_id() const { return m_vendor_id; }
inline uint8_t cpu_type() const { return m_cpu_type; }
inline uint8_t stepping() const { return m_stepping; }
inline uint16_t family() const { return m_family; }
inline uint16_t model() const { return m_model; }
private:
void read();
uint32_t m_high_leaf;
char m_vendor_id[13];
uint8_t m_cpu_type;
uint8_t m_stepping;
uint16_t m_family;
uint16_t m_model;
};