2 * OpenRISC virtual CPU header.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
20 #ifndef OPENRISC_CPU_H
21 #define OPENRISC_CPU_H
23 #define TARGET_LONG_BITS 32
25 #define CPUArchState struct CPUOpenRISCState
27 /* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl. */
30 #include "qemu-common.h"
31 #include "exec/cpu-defs.h"
32 #include "fpu/softfloat.h"
35 #define TYPE_OPENRISC_CPU "or1k-cpu"
37 #define OPENRISC_CPU_CLASS(klass) \
38 OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
39 #define OPENRISC_CPU(obj) \
40 OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
41 #define OPENRISC_CPU_GET_CLASS(obj) \
42 OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)
46 * @parent_realize: The parent class' realize handler.
47 * @parent_reset: The parent class' reset handler.
49 * A OpenRISC CPU model.
51 typedef struct OpenRISCCPUClass {
53 CPUClass parent_class;
56 DeviceRealize parent_realize;
57 void (*parent_reset)(CPUState *cpu);
60 #define NB_MMU_MODES 3
61 #define TARGET_INSN_START_EXTRA_WORDS 1
65 MMU_SUPERVISOR_IDX = 1,
69 #define TARGET_PAGE_BITS 13
71 #define TARGET_PHYS_ADDR_SPACE_BITS 32
72 #define TARGET_VIRT_ADDR_SPACE_BITS 32
74 #define SET_FP_CAUSE(reg, v) do {\
75 (reg) = ((reg) & ~(0x3f << 12)) | \
78 #define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
79 #define UPDATE_FP_FLAGS(reg, v) do {\
80 (reg) |= ((v & 0x1f) << 2);\
83 /* Version Register */
84 #define SPR_VR 0xFFFF003F
89 /* Unit presece register */
102 UPR_CUP = (255 << 24),
105 /* CPU configure register */
107 CPUCFGR_NSGF = (15 << 0),
108 CPUCFGR_CGF = (1 << 4),
109 CPUCFGR_OB32S = (1 << 5),
110 CPUCFGR_OB64S = (1 << 6),
111 CPUCFGR_OF32S = (1 << 7),
112 CPUCFGR_OF64S = (1 << 8),
113 CPUCFGR_OV64S = (1 << 9),
114 /* CPUCFGR_ND = (1 << 10), */
115 /* CPUCFGR_AVRP = (1 << 11), */
116 CPUCFGR_EVBARP = (1 << 12),
117 /* CPUCFGR_ISRP = (1 << 13), */
118 /* CPUCFGR_AECSRP = (1 << 14), */
121 /* DMMU configure register */
123 DMMUCFGR_NTW = (3 << 0),
124 DMMUCFGR_NTS = (7 << 2),
125 DMMUCFGR_NAE = (7 << 5),
126 DMMUCFGR_CRI = (1 << 8),
127 DMMUCFGR_PRI = (1 << 9),
128 DMMUCFGR_TEIRI = (1 << 10),
129 DMMUCFGR_HTR = (1 << 11),
132 /* IMMU configure register */
134 IMMUCFGR_NTW = (3 << 0),
135 IMMUCFGR_NTS = (7 << 2),
136 IMMUCFGR_NAE = (7 << 5),
137 IMMUCFGR_CRI = (1 << 8),
138 IMMUCFGR_PRI = (1 << 9),
139 IMMUCFGR_TEIRI = (1 << 10),
140 IMMUCFGR_HTR = (1 << 11),
143 /* Float point control status register */
147 FPCSR_OVF = (1 << 3),
148 FPCSR_UNF = (1 << 4),
149 FPCSR_SNF = (1 << 5),
150 FPCSR_QNF = (1 << 6),
152 FPCSR_IXF = (1 << 8),
153 FPCSR_IVF = (1 << 9),
154 FPCSR_INF = (1 << 10),
155 FPCSR_DZF = (1 << 11),
158 /* Exceptions indices */
177 /* Supervisor register */
195 SR_SUMRA = (1 << 16),
199 /* OpenRISC Hardware Capabilities */
201 OPENRISC_FEATURE_NSGF = (15 << 0),
202 OPENRISC_FEATURE_CGF = (1 << 4),
203 OPENRISC_FEATURE_OB32S = (1 << 5),
204 OPENRISC_FEATURE_OB64S = (1 << 6),
205 OPENRISC_FEATURE_OF32S = (1 << 7),
206 OPENRISC_FEATURE_OF64S = (1 << 8),
207 OPENRISC_FEATURE_OV64S = (1 << 9),
208 OPENRISC_FEATURE_EVBAR = (1 << 12),
211 /* Tick Timer Mode Register */
213 TTMR_TP = (0xfffffff),
221 TIMER_NONE = (0 << 30),
222 TIMER_INTR = (1 << 30),
223 TIMER_SHOT = (2 << 30),
224 TIMER_CONT = (3 << 30),
231 DTLB_MASK = (DTLB_SIZE-1),
234 ITLB_MASK = (ITLB_SIZE-1),
248 /* check if tlb available */
256 typedef struct OpenRISCTLBEntry {
261 #ifndef CONFIG_USER_ONLY
262 typedef struct CPUOpenRISCTLBContext {
263 OpenRISCTLBEntry itlb[ITLB_WAYS][ITLB_SIZE];
264 OpenRISCTLBEntry dtlb[DTLB_WAYS][DTLB_SIZE];
266 int (*cpu_openrisc_map_address_code)(struct OpenRISCCPU *cpu,
269 target_ulong address, int rw);
270 int (*cpu_openrisc_map_address_data)(struct OpenRISCCPU *cpu,
273 target_ulong address, int rw);
274 } CPUOpenRISCTLBContext;
277 typedef struct CPUOpenRISCState {
278 target_ulong gpr[32]; /* General registers */
279 target_ulong pc; /* Program counter */
280 target_ulong ppc; /* Prev PC */
281 target_ulong jmp_pc; /* Jump PC */
283 uint64_t mac; /* Multiply registers MACHI:MACLO */
285 target_ulong epcr; /* Exception PC register */
286 target_ulong eear; /* Exception EA register */
288 target_ulong sr_f; /* the SR_F bit, values 0, 1. */
289 target_ulong sr_cy; /* the SR_CY bit, values 0, 1. */
290 target_long sr_ov; /* the SR_OV bit (in the sign bit only) */
291 uint32_t sr; /* Supervisor register, without SR_{F,CY,OV} */
292 uint32_t vr; /* Version register */
293 uint32_t upr; /* Unit presence register */
294 uint32_t cpucfgr; /* CPU configure register */
295 uint32_t dmmucfgr; /* DMMU configure register */
296 uint32_t immucfgr; /* IMMU configure register */
297 uint32_t esr; /* Exception supervisor register */
298 uint32_t evbar; /* Exception vector base address register */
299 uint32_t fpcsr; /* Float register */
300 float_status fp_status;
302 target_ulong lock_addr;
303 target_ulong lock_value;
305 uint32_t dflag; /* In delay slot (boolean) */
307 /* Fields up to this point are cleared by a CPU reset */
308 struct {} end_reset_fields;
312 /* Fields from here on are preserved across CPU reset. */
313 #ifndef CONFIG_USER_ONLY
314 CPUOpenRISCTLBContext * tlb;
317 uint32_t ttmr; /* Timer tick mode register */
318 uint32_t ttcr; /* Timer tick count register */
320 uint32_t picmr; /* Interrupt mask register */
321 uint32_t picsr; /* Interrupt contrl register*/
323 void *irq[32]; /* Interrupt irq input */
328 * @env: #CPUOpenRISCState
332 typedef struct OpenRISCCPU {
337 CPUOpenRISCState env;
339 uint32_t feature; /* CPU Capabilities */
342 static inline OpenRISCCPU *openrisc_env_get_cpu(CPUOpenRISCState *env)
344 return container_of(env, OpenRISCCPU, env);
347 #define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))
349 #define ENV_OFFSET offsetof(OpenRISCCPU, env)
351 OpenRISCCPU *cpu_openrisc_init(const char *cpu_model);
353 void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
354 void openrisc_cpu_do_interrupt(CPUState *cpu);
355 bool openrisc_cpu_exec_interrupt(CPUState *cpu, int int_req);
356 void openrisc_cpu_dump_state(CPUState *cpu, FILE *f,
357 fprintf_function cpu_fprintf, int flags);
358 hwaddr openrisc_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
359 int openrisc_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
360 int openrisc_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
361 void openrisc_translate_init(void);
362 int openrisc_cpu_handle_mmu_fault(CPUState *cpu, vaddr address,
363 int rw, int mmu_idx);
364 int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);
366 #define cpu_list cpu_openrisc_list
367 #define cpu_signal_handler cpu_openrisc_signal_handler
369 #ifndef CONFIG_USER_ONLY
370 extern const struct VMStateDescription vmstate_openrisc_cpu;
372 /* hw/openrisc_pic.c */
373 void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
375 /* hw/openrisc_timer.c */
376 void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
377 void cpu_openrisc_count_update(OpenRISCCPU *cpu);
378 void cpu_openrisc_timer_update(OpenRISCCPU *cpu);
379 void cpu_openrisc_count_start(OpenRISCCPU *cpu);
380 void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
382 void cpu_openrisc_mmu_init(OpenRISCCPU *cpu);
383 int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
385 int *prot, target_ulong address, int rw);
386 int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
388 int *prot, target_ulong address, int rw);
389 int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
391 int *prot, target_ulong address, int rw);
394 #define cpu_init(cpu_model) CPU(cpu_openrisc_init(cpu_model))
396 #include "exec/cpu-all.h"
398 #define TB_FLAGS_DFLAG 1
399 #define TB_FLAGS_R0_0 2
400 #define TB_FLAGS_OVE SR_OVE
402 static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
404 target_ulong *cs_base, uint32_t *flags)
409 | (env->gpr[0] == 0 ? TB_FLAGS_R0_0 : 0)
410 | (env->sr & SR_OVE));
413 static inline int cpu_mmu_index(CPUOpenRISCState *env, bool ifetch)
415 if (!(env->sr & SR_IME)) {
416 return MMU_NOMMU_IDX;
418 return (env->sr & SR_SM) == 0 ? MMU_USER_IDX : MMU_SUPERVISOR_IDX;
421 static inline uint32_t cpu_get_sr(const CPUOpenRISCState *env)
426 + (env->sr_ov < 0) * SR_OV);
429 static inline void cpu_set_sr(CPUOpenRISCState *env, uint32_t val)
431 env->sr_f = (val & SR_F) != 0;
432 env->sr_cy = (val & SR_CY) != 0;
433 env->sr_ov = (val & SR_OV ? -1 : 0);
434 env->sr = (val & ~(SR_F | SR_CY | SR_OV)) | SR_FO;
437 #define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
439 #endif /* OPENRISC_CPU_H */