Archipelago » qemu

#if !defined (__QEMU_MIPS_DEFS_H__)

#define __QEMU_MIPS_DEFS_H__

/* If we want to use 64 bits host regs... */

//#define USE_64BITS_REGS

/* If we want to use host float regs... */

//#define USE_HOST_FLOAT_REGS

#define MIPS_R4Kc 0x00018000

#define MIPS_R4Kp 0x00018300

/* Emulate MIPS R4Kc for now */

#define MIPS_CPU MIPS_R4Kc

#if (MIPS_CPU == MIPS_R4Kc)

/* 32 bits target */

#define TARGET_LONG_BITS 32

/* real pages are variable size... */

#define TARGET_PAGE_BITS 12

/* Uses MIPS R4Kx enhancements to MIPS32 architecture */

#define MIPS_USES_R4K_EXT

/* Uses MIPS R4Kc TLB model */

#define MIPS_USES_R4K_TLB

#define MIPS_TLB_NB 16

#define MIPS_TLB_MAX 128

/* basic FPU register support */

#define MIPS_USES_FPU 1

/* Define a implementation number of 1.

 * Define a major version 1, minor version 0.

 */

#define MIPS_FCR0 ((0 << 16) | (1 << 8) | (1 << 4) | 0)

  /* Have config1, is MIPS32R1, uses TLB, no virtual icache,

     uncached coherency */

#define MIPS_CONFIG0_1                                            \

  ((1 << CP0C0_M) | (0x0 << CP0C0_K23) | (0x0 << CP0C0_KU) |      \

   (0x0 << CP0C0_AT) | (0x0 << CP0C0_AR) | (0x1 << CP0C0_MT) |    \

   (0x2 << CP0C0_K0))

#ifdef TARGET_WORDS_BIGENDIAN

#define MIPS_CONFIG0 (MIPS_CONFIG0_1 | (1 << CP0C0_BE))

#else

#define MIPS_CONFIG0 MIPS_CONFIG0_1

#endif

/* Have config2, 16 TLB entries, 64 sets Icache, 16 bytes Icache line,

   2-way Icache, 64 sets Dcache, 16 bytes Dcache line, 2-way Dcache,

   no coprocessor2 attached, no MDMX support attached,

   no performance counters, watch registers present,

   no code compression, EJTAG present, FPU enable bit depending on

   MIPS_USES_FPU */

#define MIPS_CONFIG1_1                                            \

((1 << CP0C1_M) | ((MIPS_TLB_NB - 1) << CP0C1_MMU) |              \

 (0x0 << CP0C1_IS) | (0x3 << CP0C1_IL) | (0x1 << CP0C1_IA) |      \

 (0x0 << CP0C1_DS) | (0x3 << CP0C1_DL) | (0x1 << CP0C1_DA) |      \

 (0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) |            \

 (1 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP))

#ifdef MIPS_USES_FPU

#define MIPS_CONFIG1  (MIPS_CONFIG1_1 | (1 << CP0C1_FP))

#else

#define MIPS_CONFIG1  (MIPS_CONFIG1_1 | (0 << CP0C1_FP))

#endif

/* Have config3, no tertiary/secondary caches implemented */

#define MIPS_CONFIG2                                              \

((1 << CP0C2_M))

/* No config4, no DSP ASE, no large physaddr,

   no external interrupt controller, no vectored interupts,

   no 1kb pages, no MT ASE, no SmartMIPS ASE, no trace logic */

#define MIPS_CONFIG3                                              \

((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) |          \

 (0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) |        \

 (0 << CP0C3_MT) | (0 << CP0C3_SM) | (0 << CP0C3_TL))

#elif (MIPS_CPU == MIPS_R4Kp)

/* 32 bits target */

#define TARGET_LONG_BITS 32

/* real pages are variable size... */

#define TARGET_PAGE_BITS 12

/* Uses MIPS R4Kx enhancements to MIPS32 architecture */

#define MIPS_USES_R4K_EXT

/* Uses MIPS R4Km FPM MMU model */

#define MIPS_USES_R4K_FPM

#else

#error "MIPS CPU not defined"

/* Reminder for other flags */

//#define TARGET_MIPS64

//#define MIPS_USES_FPU

#endif

#endif /* !defined (__QEMU_MIPS_DEFS_H__) */