mp.h

   1 // See MultiProcessor Specification Version 1.[14]
   2
   3 struct mp {             // floating pointer
   4   uchar signature[4];           // "_MP_"
   5   void *physaddr;               // phys addr of MP config table
   6   uchar length;                 // 1
   7   uchar specrev;                // [14]
   8   uchar checksum;               // all bytes must add up to 0
   9   uchar type;                   // MP system config type
  10   uchar imcrp;
  11   uchar reserved[3];
  12 };
  13
  14 struct mpconf {         // configuration table header
  15   uchar signature[4];           // "PCMP"
  16   ushort length;                // total table length
  17   uchar version;                // [14]
  18   uchar checksum;               // all bytes must add up to 0
  19   uchar product[20];            // product id
  20   uint *oemtable;               // OEM table pointer
  21   ushort oemlength;             // OEM table length
  22   ushort entry;                 // entry count
  23   uint *lapicaddr;              // address of local APIC
  24   ushort xlength;               // extended table length
  25   uchar xchecksum;              // extended table checksum
  26   uchar reserved;
  27 };
  28
  29 struct mpproc {         // processor table entry
  30   uchar type;                   // entry type (0)
  31   uchar apicid;                 // local APIC id
  32   uchar version;                // local APIC verison
  33   uchar flags;                  // CPU flags
  34     #define MPBOOT 0x02           // This proc is the bootstrap processor.
  35   uchar signature[4];           // CPU signature
  36   uint feature;                 // feature flags from CPUID instruction
  37   uchar reserved[8];
  38 };
  39
  40 struct mpioapic {       // I/O APIC table entry
  41   uchar type;                   // entry type (2)
  42   uchar apicno;                 // I/O APIC id
  43   uchar version;                // I/O APIC version
  44   uchar flags;                  // I/O APIC flags
  45   uint *addr;                  // I/O APIC address
  46 };
  47
  48 // Table entry types
  49 #define MPPROC    0x00  // One per processor
  50 #define MPBUS     0x01  // One per bus
  51 #define MPIOAPIC  0x02  // One per I/O APIC
  52 #define MPIOINTR  0x03  // One per bus interrupt source
  53 #define MPLINTR   0x04  // One per system interrupt source
  54