/* * 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 2.1 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 . */ #ifndef MICROBLAZE_CPU_H #define MICROBLAZE_CPU_H #include "cpu-qom.h" #include "exec/cpu-defs.h" #include "qemu/cpu-float.h" typedef struct CPUArchState CPUMBState; #if !defined(CONFIG_USER_ONLY) #include "mmu.h" #endif #define EXCP_MMU 1 #define EXCP_IRQ 2 #define EXCP_SYSCALL 3 /* user-only */ #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_W (1<<11) /* Unaligned word access */ #define ESR_S (1<<10) /* Store instruction */ #define ESR_ESS_FSL_OFFSET 5 #define ESR_ESS_MASK (0x7f << 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 #define PVR0_VERSION_SHIFT 8 /* 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 #define PVR10_ASIZE_SHIFT 18 /* 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 STREAM_EXCEPTION (1 << 0) #define STREAM_ATOMIC (1 << 1) #define STREAM_TEST (1 << 2) #define STREAM_CONTROL (1 << 3) #define STREAM_NONBLOCK (1 << 4) #define TARGET_INSN_START_EXTRA_WORDS 1 /* use-non-secure property masks */ #define USE_NON_SECURE_M_AXI_DP_MASK 0x1 #define USE_NON_SECURE_M_AXI_IP_MASK 0x2 #define USE_NON_SECURE_M_AXI_DC_MASK 0x4 #define USE_NON_SECURE_M_AXI_IC_MASK 0x8 struct CPUArchState { uint32_t bvalue; /* TCG temporary, only valid during a TB */ uint32_t btarget; /* Full resolved branch destination */ uint32_t imm; uint32_t regs[32]; uint32_t pc; uint32_t msr; /* All bits of MSR except MSR[C] and MSR[CC] */ uint32_t msr_c; /* MSR[C], in low bit; other bits must be 0 */ target_ulong ear; uint32_t esr; uint32_t fsr; uint32_t btr; uint32_t edr; 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 */ target_ulong res_addr; uint32_t res_val; /* Internal flags. */ #define IMM_FLAG (1 << 0) #define BIMM_FLAG (1 << 1) #define ESR_ESS_FLAG (1 << 2) /* indicates ESR_ESS_MASK is present */ /* MSR_EE (1 << 8) -- these 3 are not in iflags but tb_flags */ /* MSR_UM (1 << 11) */ /* MSR_VM (1 << 13) */ /* ESR_ESS_MASK [11:5] -- unwind into iflags for unaligned excp */ #define D_FLAG (1 << 12) /* Bit in ESR. */ #define DRTI_FLAG (1 << 16) #define DRTE_FLAG (1 << 17) #define DRTB_FLAG (1 << 18) /* TB dependent CPUMBState. */ #define IFLAGS_TB_MASK (D_FLAG | BIMM_FLAG | IMM_FLAG | \ DRTI_FLAG | DRTE_FLAG | DRTB_FLAG) #define MSR_TB_MASK (MSR_UM | MSR_VM | MSR_EE) uint32_t iflags; #if !defined(CONFIG_USER_ONLY) /* Unified MMU. */ MicroBlazeMMU mmu; #endif /* Fields up to this point are cleared by a CPU reset */ struct {} end_reset_fields; /* These fields are preserved on reset. */ }; /* * Microblaze Configuration Settings * * Note that the structure is sorted by type and size to minimize holes. */ typedef struct { char *version; uint64_t addr_mask; uint32_t base_vectors; uint32_t pvr_user2; uint32_t pvr_regs[13]; uint8_t addr_size; uint8_t use_fpu; uint8_t use_hw_mul; uint8_t pvr_user1; uint8_t pvr; uint8_t mmu; uint8_t mmu_tlb_access; uint8_t mmu_zones; bool stackprot; bool use_barrel; bool use_div; bool use_msr_instr; bool use_pcmp_instr; bool use_mmu; uint8_t use_non_secure; bool dcache_writeback; bool endi; bool dopb_bus_exception; bool iopb_bus_exception; bool illegal_opcode_exception; bool opcode_0_illegal; bool div_zero_exception; bool unaligned_exceptions; } MicroBlazeCPUConfig; /** * MicroBlazeCPU: * @env: #CPUMBState * * A MicroBlaze CPU. */ struct ArchCPU { /*< private >*/ CPUState parent_obj; /*< public >*/ bool ns_axi_dp; bool ns_axi_ip; bool ns_axi_dc; bool ns_axi_ic; CPUNegativeOffsetState neg; CPUMBState env; MicroBlazeCPUConfig cfg; }; #ifndef CONFIG_USER_ONLY void mb_cpu_do_interrupt(CPUState *cs); bool mb_cpu_exec_interrupt(CPUState *cs, int int_req); #endif /* !CONFIG_USER_ONLY */ G_NORETURN void mb_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr, MMUAccessType access_type, int mmu_idx, uintptr_t retaddr); void mb_cpu_dump_state(CPUState *cpu, FILE *f, int flags); hwaddr mb_cpu_get_phys_page_attrs_debug(CPUState *cpu, vaddr addr, MemTxAttrs *attrs); int mb_cpu_gdb_read_register(CPUState *cpu, GByteArray *buf, int reg); int mb_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); int mb_cpu_gdb_read_stack_protect(CPUArchState *cpu, GByteArray *buf, int reg); int mb_cpu_gdb_write_stack_protect(CPUArchState *cpu, uint8_t *buf, int reg); static inline uint32_t mb_cpu_read_msr(const CPUMBState *env) { /* Replicate MSR[C] to MSR[CC]. */ return env->msr | (env->msr_c * (MSR_C | MSR_CC)); } static inline void mb_cpu_write_msr(CPUMBState *env, uint32_t val) { env->msr_c = (val >> 2) & 1; /* * Clear both MSR[C] and MSR[CC] from the saved copy. * MSR_PVR is not writable and is always clear. */ env->msr = val & ~(MSR_C | MSR_CC | MSR_PVR); } void mb_tcg_init(void); #define CPU_RESOLVING_TYPE TYPE_MICROBLAZE_CPU /* MMU modes definitions */ #define MMU_NOMMU_IDX 0 #define MMU_KERNEL_IDX 1 #define MMU_USER_IDX 2 /* See NB_MMU_MODES further up the file. */ #include "exec/cpu-all.h" /* Ensure there is no overlap between the two masks. */ QEMU_BUILD_BUG_ON(MSR_TB_MASK & IFLAGS_TB_MASK); static inline void cpu_get_tb_cpu_state(CPUMBState *env, target_ulong *pc, target_ulong *cs_base, uint32_t *flags) { *pc = env->pc; *flags = (env->iflags & IFLAGS_TB_MASK) | (env->msr & MSR_TB_MASK); *cs_base = (*flags & IMM_FLAG ? env->imm : 0); } #if !defined(CONFIG_USER_ONLY) bool mb_cpu_tlb_fill(CPUState *cs, vaddr address, int size, MMUAccessType access_type, int mmu_idx, bool probe, uintptr_t retaddr); void mb_cpu_transaction_failed(CPUState *cs, hwaddr physaddr, vaddr addr, unsigned size, MMUAccessType access_type, int mmu_idx, MemTxAttrs attrs, MemTxResult response, uintptr_t retaddr); #endif static inline int cpu_mmu_index(CPUMBState *env, bool ifetch) { MicroBlazeCPU *cpu = env_archcpu(env); /* Are we in nommu mode?. */ if (!(env->msr & MSR_VM) || !cpu->cfg.use_mmu) { return MMU_NOMMU_IDX; } if (env->msr & MSR_UM) { return MMU_USER_IDX; } return MMU_KERNEL_IDX; } #ifndef CONFIG_USER_ONLY extern const VMStateDescription vmstate_mb_cpu; #endif #endif