/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
//   Copyright (c) 2011-2015 Stanislav Shwartsman
//          Written by Stanislav Shwartsman [sshwarts at sourceforge net]
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////

#include "bochs.h"
#include "cpu.h"
#include "p2_klamath.h"

#if BX_CPU_LEVEL >= 6

#define LOG_THIS cpu->

p2_klamath_t::p2_klamath_t(BX_CPU_C *cpu): bx_cpuid_t(cpu)
{
  static Bit8u supported_extensions[] = {
      BX_ISA_X87,
      BX_ISA_486,
      BX_ISA_PENTIUM,
      BX_ISA_MMX,
      BX_ISA_P6,
      BX_ISA_SYSENTER_SYSEXIT,
      BX_ISA_DEBUG_EXTENSIONS,
      BX_ISA_VME,
      BX_ISA_PSE,
      BX_ISA_PAE,
      BX_ISA_PGE,
#if BX_PHY_ADDRESS_LONG
      BX_ISA_PSE36,
#endif
      BX_ISA_MTRR,
      BX_ISA_EXTENSION_LAST
  };

  register_cpu_extensions(supported_extensions);
}

void p2_klamath_t::get_cpuid_leaf(Bit32u function, Bit32u subfunction, cpuid_function_t *leaf) const
{
  switch(function) {
  case 0x00000000:
    get_std_cpuid_leaf_0(leaf);
    return;
  case 0x00000001:
    get_std_cpuid_leaf_1(leaf);
    return;
  case 0x00000002:
  default:
    get_std_cpuid_leaf_2(leaf);
    return;
  }
}

// leaf 0x00000000 //
void p2_klamath_t::get_std_cpuid_leaf_0(cpuid_function_t *leaf) const
{
  get_leaf_0(0x2, "GenuineIntel", leaf);
}

// leaf 0x00000001 //
void p2_klamath_t::get_std_cpuid_leaf_1(cpuid_function_t *leaf) const
{
  // EAX:       CPU Version Information
  //   [3:0]   Stepping ID
  //   [7:4]   Model: starts at 1
  //   [11:8]  Family: 4=486, 5=Pentium, 6=PPro, ...
  //   [13:12] Type: 0=OEM, 1=overdrive, 2=dual cpu, 3=reserved
  //   [19:16] Extended Model
  //   [27:20] Extended Family
  leaf->eax = 0x00000634;

  leaf->ebx = 0;
  leaf->ecx = 0;

  // EDX: Standard Feature Flags
  // * [0:0]   FPU on chip
  // * [1:1]   VME: Virtual-8086 Mode enhancements
  // * [2:2]   DE: Debug Extensions (I/O breakpoints)
  // * [3:3]   PSE: Page Size Extensions
  // * [4:4]   TSC: Time Stamp Counter
  // * [5:5]   MSR: RDMSR and WRMSR support
  // * [6:6]   PAE: Physical Address Extensions
  // * [7:7]   MCE: Machine Check Exception
  // * [8:8]   CXS: CMPXCHG8B instruction
  // * [9:9]   APIC: APIC on Chip
  //   [10:10] Reserved
  // * [11:11] SYSENTER/SYSEXIT support
  // * [12:12] MTRR: Memory Type Range Reg
  // * [13:13] PGE/PTE Global Bit
  // * [14:14] MCA: Machine Check Architecture
  // * [15:15] CMOV: Cond Mov/Cmp Instructions
  //   [16:16] PAT: Page Attribute Table
  //   [17:17] PSE-36: Physical Address Extensions
  //   [18:18] PSN: Processor Serial Number
  //   [19:19] CLFLUSH: CLFLUSH Instruction support
  //   [20:20] Reserved
  //   [21:21] DS: Debug Store
  //   [22:22] ACPI: Thermal Monitor and Software Controlled Clock Facilities
  // * [23:23] MMX Technology
  //   [24:24] FXSR: FXSAVE/FXRSTOR (also indicates CR4.OSFXSR is available)
  //   [25:25] SSE: SSE Extensions
  //   [26:26] SSE2: SSE2 Extensions
  //   [27:27] Self Snoop
  //   [28:28] Hyper Threading Technology
  //   [29:29] TM: Thermal Monitor
  //   [30:30] Reserved
  //   [31:31] PBE: Pending Break Enable
  leaf->edx = BX_CPUID_STD_X87 |
              BX_CPUID_STD_VME |
              BX_CPUID_STD_DEBUG_EXTENSIONS |
              BX_CPUID_STD_PSE |
              BX_CPUID_STD_TSC |
              BX_CPUID_STD_MSR |
              BX_CPUID_STD_PAE |
              BX_CPUID_STD_MCE |
              BX_CPUID_STD_CMPXCHG8B |
              BX_CPUID_STD_SYSENTER_SYSEXIT |
              BX_CPUID_STD_MTRR |
              BX_CPUID_STD_GLOBAL_PAGES |
              BX_CPUID_STD_MCA |
              BX_CPUID_STD_CMOV |
#if BX_PHY_ADDRESS_LONG
              BX_CPUID_STD_PSE36 |
#endif
              BX_CPUID_STD_MMX;
#if BX_SUPPORT_APIC
  // if MSR_APICBASE APIC Global Enable bit has been cleared,
  // the CPUID feature flag for the APIC is set to 0.
  if (cpu->msr.apicbase & 0x800)
    leaf->edx |= BX_CPUID_STD_APIC; // APIC on chip
#endif
}

// leaf 0x00000002 //
void p2_klamath_t::get_std_cpuid_leaf_2(cpuid_function_t *leaf) const
{
  // CPUID function 0x00000002 - Cache and TLB Descriptors
  leaf->eax = 0x03020101;
  leaf->ebx = 0x00000000;
  leaf->ecx = 0x00000000;
  leaf->edx = 0x0c040843;
}

void p2_klamath_t::dump_cpuid(void) const
{
  bx_cpuid_t::dump_cpuid(0x2, 0);
}

bx_cpuid_t *create_p2_klamath_cpuid(BX_CPU_C *cpu) { return new p2_klamath_t(cpu); }

#endif