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Diffstat (limited to 'qemu/target-microblaze/cpu.h')
| -rw-r--r-- | qemu/target-microblaze/cpu.h | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/qemu/target-microblaze/cpu.h b/qemu/target-microblaze/cpu.h new file mode 100644 index 000000000..7e20e59b8 --- /dev/null +++ b/qemu/target-microblaze/cpu.h @@ -0,0 +1,345 @@ +/* + * MicroBlaze virtual CPU header + * + * Copyright (c) 2009 Edgar E. Iglesias + * + * 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 + * 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, see <http://www.gnu.org/licenses/>. + */ +#ifndef CPU_MICROBLAZE_H +#define CPU_MICROBLAZE_H + +#include "config.h" +#include "qemu-common.h" + +#define TARGET_LONG_BITS 32 + +#define CPUArchState struct CPUMBState + +#include "exec/cpu-defs.h" +#include "fpu/softfloat.h" +struct CPUMBState; +typedef struct CPUMBState CPUMBState; +#if !defined(CONFIG_USER_ONLY) +#include "mmu.h" +#endif + +#define ELF_MACHINE EM_MICROBLAZE + +#define EXCP_MMU 1 +#define EXCP_IRQ 2 +#define EXCP_BREAK 3 +#define EXCP_HW_BREAK 4 +#define EXCP_HW_EXCP 5 + +/* MicroBlaze-specific interrupt pending bits. */ +#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3 + +/* Meanings of the MBCPU object's two inbound GPIO lines */ +#define MB_CPU_IRQ 0 +#define MB_CPU_FIR 1 + +/* Register aliases. R0 - R15 */ +#define R_SP 1 +#define SR_PC 0 +#define SR_MSR 1 +#define SR_EAR 3 +#define SR_ESR 5 +#define SR_FSR 7 +#define SR_BTR 0xb +#define SR_EDR 0xd + +/* MSR flags. */ +#define MSR_BE (1<<0) /* 0x001 */ +#define MSR_IE (1<<1) /* 0x002 */ +#define MSR_C (1<<2) /* 0x004 */ +#define MSR_BIP (1<<3) /* 0x008 */ +#define MSR_FSL (1<<4) /* 0x010 */ +#define MSR_ICE (1<<5) /* 0x020 */ +#define MSR_DZ (1<<6) /* 0x040 */ +#define MSR_DCE (1<<7) /* 0x080 */ +#define MSR_EE (1<<8) /* 0x100 */ +#define MSR_EIP (1<<9) /* 0x200 */ +#define MSR_PVR (1<<10) /* 0x400 */ +#define MSR_CC (1<<31) + +/* Machine State Register (MSR) Fields */ +#define MSR_UM (1<<11) /* User Mode */ +#define MSR_UMS (1<<12) /* User Mode Save */ +#define MSR_VM (1<<13) /* Virtual Mode */ +#define MSR_VMS (1<<14) /* Virtual Mode Save */ + +#define MSR_KERNEL MSR_EE|MSR_VM +//#define MSR_USER MSR_KERNEL|MSR_UM|MSR_IE +#define MSR_KERNEL_VMS MSR_EE|MSR_VMS +//#define MSR_USER_VMS MSR_KERNEL_VMS|MSR_UMS|MSR_IE + +/* Exception State Register (ESR) Fields */ +#define ESR_DIZ (1<<11) /* Zone Protection */ +#define ESR_S (1<<10) /* Store instruction */ + +#define ESR_ESS_FSL_OFFSET 5 + +#define ESR_EC_FSL 0 +#define ESR_EC_UNALIGNED_DATA 1 +#define ESR_EC_ILLEGAL_OP 2 +#define ESR_EC_INSN_BUS 3 +#define ESR_EC_DATA_BUS 4 +#define ESR_EC_DIVZERO 5 +#define ESR_EC_FPU 6 +#define ESR_EC_PRIVINSN 7 +#define ESR_EC_STACKPROT 7 /* Same as PRIVINSN. */ +#define ESR_EC_DATA_STORAGE 8 +#define ESR_EC_INSN_STORAGE 9 +#define ESR_EC_DATA_TLB 10 +#define ESR_EC_INSN_TLB 11 +#define ESR_EC_MASK 31 + +/* Floating Point Status Register (FSR) Bits */ +#define FSR_IO (1<<4) /* Invalid operation */ +#define FSR_DZ (1<<3) /* Divide-by-zero */ +#define FSR_OF (1<<2) /* Overflow */ +#define FSR_UF (1<<1) /* Underflow */ +#define FSR_DO (1<<0) /* Denormalized operand error */ + +/* Version reg. */ +/* Basic PVR mask */ +#define PVR0_PVR_FULL_MASK 0x80000000 +#define PVR0_USE_BARREL_MASK 0x40000000 +#define PVR0_USE_DIV_MASK 0x20000000 +#define PVR0_USE_HW_MUL_MASK 0x10000000 +#define PVR0_USE_FPU_MASK 0x08000000 +#define PVR0_USE_EXC_MASK 0x04000000 +#define PVR0_USE_ICACHE_MASK 0x02000000 +#define PVR0_USE_DCACHE_MASK 0x01000000 +#define PVR0_USE_MMU_MASK 0x00800000 +#define PVR0_USE_BTC 0x00400000 +#define PVR0_ENDI_MASK 0x00200000 +#define PVR0_FAULT 0x00100000 +#define PVR0_VERSION_MASK 0x0000FF00 +#define PVR0_USER1_MASK 0x000000FF +#define PVR0_SPROT_MASK 0x00000001 + +/* User 2 PVR mask */ +#define PVR1_USER2_MASK 0xFFFFFFFF + +/* Configuration PVR masks */ +#define PVR2_D_OPB_MASK 0x80000000 +#define PVR2_D_LMB_MASK 0x40000000 +#define PVR2_I_OPB_MASK 0x20000000 +#define PVR2_I_LMB_MASK 0x10000000 +#define PVR2_INTERRUPT_IS_EDGE_MASK 0x08000000 +#define PVR2_EDGE_IS_POSITIVE_MASK 0x04000000 +#define PVR2_D_PLB_MASK 0x02000000 /* new */ +#define PVR2_I_PLB_MASK 0x01000000 /* new */ +#define PVR2_INTERCONNECT 0x00800000 /* new */ +#define PVR2_USE_EXTEND_FSL 0x00080000 /* new */ +#define PVR2_USE_FSL_EXC 0x00040000 /* new */ +#define PVR2_USE_MSR_INSTR 0x00020000 +#define PVR2_USE_PCMP_INSTR 0x00010000 +#define PVR2_AREA_OPTIMISED 0x00008000 +#define PVR2_USE_BARREL_MASK 0x00004000 +#define PVR2_USE_DIV_MASK 0x00002000 +#define PVR2_USE_HW_MUL_MASK 0x00001000 +#define PVR2_USE_FPU_MASK 0x00000800 +#define PVR2_USE_MUL64_MASK 0x00000400 +#define PVR2_USE_FPU2_MASK 0x00000200 /* new */ +#define PVR2_USE_IPLBEXC 0x00000100 +#define PVR2_USE_DPLBEXC 0x00000080 +#define PVR2_OPCODE_0x0_ILL_MASK 0x00000040 +#define PVR2_UNALIGNED_EXC_MASK 0x00000020 +#define PVR2_ILL_OPCODE_EXC_MASK 0x00000010 +#define PVR2_IOPB_BUS_EXC_MASK 0x00000008 +#define PVR2_DOPB_BUS_EXC_MASK 0x00000004 +#define PVR2_DIV_ZERO_EXC_MASK 0x00000002 +#define PVR2_FPU_EXC_MASK 0x00000001 + +/* Debug and exception PVR masks */ +#define PVR3_DEBUG_ENABLED_MASK 0x80000000 +#define PVR3_NUMBER_OF_PC_BRK_MASK 0x1E000000 +#define PVR3_NUMBER_OF_RD_ADDR_BRK_MASK 0x00380000 +#define PVR3_NUMBER_OF_WR_ADDR_BRK_MASK 0x0000E000 +#define PVR3_FSL_LINKS_MASK 0x00000380 + +/* ICache config PVR masks */ +#define PVR4_USE_ICACHE_MASK 0x80000000 +#define PVR4_ICACHE_ADDR_TAG_BITS_MASK 0x7C000000 +#define PVR4_ICACHE_USE_FSL_MASK 0x02000000 +#define PVR4_ICACHE_ALLOW_WR_MASK 0x01000000 +#define PVR4_ICACHE_LINE_LEN_MASK 0x00E00000 +#define PVR4_ICACHE_BYTE_SIZE_MASK 0x001F0000 + +/* DCache config PVR masks */ +#define PVR5_USE_DCACHE_MASK 0x80000000 +#define PVR5_DCACHE_ADDR_TAG_BITS_MASK 0x7C000000 +#define PVR5_DCACHE_USE_FSL_MASK 0x02000000 +#define PVR5_DCACHE_ALLOW_WR_MASK 0x01000000 +#define PVR5_DCACHE_LINE_LEN_MASK 0x00E00000 +#define PVR5_DCACHE_BYTE_SIZE_MASK 0x001F0000 +#define PVR5_DCACHE_WRITEBACK_MASK 0x00004000 + +/* ICache base address PVR mask */ +#define PVR6_ICACHE_BASEADDR_MASK 0xFFFFFFFF + +/* ICache high address PVR mask */ +#define PVR7_ICACHE_HIGHADDR_MASK 0xFFFFFFFF + +/* DCache base address PVR mask */ +#define PVR8_DCACHE_BASEADDR_MASK 0xFFFFFFFF + +/* DCache high address PVR mask */ +#define PVR9_DCACHE_HIGHADDR_MASK 0xFFFFFFFF + +/* Target family PVR mask */ +#define PVR10_TARGET_FAMILY_MASK 0xFF000000 + +/* MMU descrtiption */ +#define PVR11_USE_MMU 0xC0000000 +#define PVR11_MMU_ITLB_SIZE 0x38000000 +#define PVR11_MMU_DTLB_SIZE 0x07000000 +#define PVR11_MMU_TLB_ACCESS 0x00C00000 +#define PVR11_MMU_ZONES 0x003E0000 +/* MSR Reset value PVR mask */ +#define PVR11_MSR_RESET_VALUE_MASK 0x000007FF + +#define C_PVR_NONE 0 +#define C_PVR_BASIC 1 +#define C_PVR_FULL 2 + +/* CPU flags. */ + +/* Condition codes. */ +#define CC_GE 5 +#define CC_GT 4 +#define CC_LE 3 +#define CC_LT 2 +#define CC_NE 1 +#define CC_EQ 0 + +#define NB_MMU_MODES 3 + +#define STREAM_EXCEPTION (1 << 0) +#define STREAM_ATOMIC (1 << 1) +#define STREAM_TEST (1 << 2) +#define STREAM_CONTROL (1 << 3) +#define STREAM_NONBLOCK (1 << 4) + +struct CPUMBState { + uint32_t debug; + uint32_t btaken; + uint32_t btarget; + uint32_t bimm; + + uint32_t imm; + uint32_t regs[33]; + uint32_t sregs[24]; + float_status fp_status; + /* Stack protectors. Yes, it's a hw feature. */ + uint32_t slr, shr; + + /* lwx/swx reserved address */ +#define RES_ADDR_NONE 0xffffffff /* Use 0xffffffff to indicate no reservation */ + uint32_t res_addr; + uint32_t res_val; + + /* Internal flags. */ +#define IMM_FLAG 4 +#define MSR_EE_FLAG (1 << 8) +#define DRTI_FLAG (1 << 16) +#define DRTE_FLAG (1 << 17) +#define DRTB_FLAG (1 << 18) +#define D_FLAG (1 << 19) /* Bit in ESR. */ +/* TB dependent CPUMBState. */ +#define IFLAGS_TB_MASK (D_FLAG | IMM_FLAG | DRTI_FLAG | DRTE_FLAG | DRTB_FLAG) + uint32_t iflags; + +#if !defined(CONFIG_USER_ONLY) + /* Unified MMU. */ + struct microblaze_mmu mmu; +#endif + + CPU_COMMON + + /* These fields are preserved on reset. */ + + struct { + uint32_t regs[16]; + } pvr; +}; + +#include "cpu-qom.h" + +void mb_tcg_init(void); +MicroBlazeCPU *cpu_mb_init(const char *cpu_model); +int cpu_mb_exec(CPUState *cpu); +/* you can call this signal handler from your SIGBUS and SIGSEGV + signal handlers to inform the virtual CPU of exceptions. non zero + is returned if the signal was handled by the virtual CPU. */ +int cpu_mb_signal_handler(int host_signum, void *pinfo, + void *puc); + +/* FIXME: MB uses variable pages down to 1K but linux only uses 4k. */ +#define TARGET_PAGE_BITS 12 + +#define TARGET_PHYS_ADDR_SPACE_BITS 32 +#define TARGET_VIRT_ADDR_SPACE_BITS 32 + +#define cpu_init(cpu_model) CPU(cpu_mb_init(cpu_model)) + +#define cpu_exec cpu_mb_exec +#define cpu_gen_code cpu_mb_gen_code +#define cpu_signal_handler cpu_mb_signal_handler + +/* MMU modes definitions */ +#define MMU_MODE0_SUFFIX _nommu +#define MMU_MODE1_SUFFIX _kernel +#define MMU_MODE2_SUFFIX _user +#define MMU_NOMMU_IDX 0 +#define MMU_KERNEL_IDX 1 +#define MMU_USER_IDX 2 +/* See NB_MMU_MODES further up the file. */ + +static inline int cpu_mmu_index (CPUMBState *env) +{ + /* Are we in nommu mode?. */ + if (!(env->sregs[SR_MSR] & MSR_VM)) + return MMU_NOMMU_IDX; + + if (env->sregs[SR_MSR] & MSR_UM) + return MMU_USER_IDX; + return MMU_KERNEL_IDX; +} + +int mb_cpu_handle_mmu_fault(CPUState *cpu, vaddr address, int rw, + int mmu_idx); + +#include "exec/cpu-all.h" + +static inline void cpu_get_tb_cpu_state(CPUMBState *env, target_ulong *pc, + target_ulong *cs_base, int *flags) +{ + *pc = env->sregs[SR_PC]; + *cs_base = 0; + *flags = (env->iflags & IFLAGS_TB_MASK) | + (env->sregs[SR_MSR] & (MSR_UM | MSR_VM | MSR_EE)); +} + +#if !defined(CONFIG_USER_ONLY) +void mb_cpu_unassigned_access(CPUState *cpu, hwaddr addr, + bool is_write, bool is_exec, int is_asi, + unsigned size); +#endif + +#include "exec/exec-all.h" + +#endif |