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 CPU_OPENRISC_H
21 #define CPU_OPENRISC_H
23 #define TARGET_LONG_BITS 32
24 #define ELF_MACHINE EM_OPENRISC
26 #define CPUArchState struct CPUOpenRISCState
28 /* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl. */
32 #include "qemu-common.h"
33 #include "exec/cpu-defs.h"
34 #include "fpu/softfloat.h"
37 #define TYPE_OPENRISC_CPU "or32-cpu"
39 #define OPENRISC_CPU_CLASS(klass) \
40 OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
41 #define OPENRISC_CPU(obj) \
42 OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
43 #define OPENRISC_CPU_GET_CLASS(obj) \
44 OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)
48 * @parent_realize: The parent class' realize handler.
49 * @parent_reset: The parent class' reset handler.
51 * A OpenRISC CPU model.
53 typedef struct OpenRISCCPUClass {
55 CPUClass parent_class;
58 DeviceRealize parent_realize;
59 void (*parent_reset)(CPUState *cpu);
62 #define NB_MMU_MODES 3
66 MMU_SUPERVISOR_IDX = 1,
70 #define TARGET_PAGE_BITS 13
72 #define TARGET_PHYS_ADDR_SPACE_BITS 32
73 #define TARGET_VIRT_ADDR_SPACE_BITS 32
75 #define SET_FP_CAUSE(reg, v) do {\
76 (reg) = ((reg) & ~(0x3f << 12)) | \
79 #define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
80 #define UPDATE_FP_FLAGS(reg, v) do {\
81 (reg) |= ((v & 0x1f) << 2);\
84 /* Version Register */
85 #define SPR_VR 0xFFFF003F
87 /* Internal flags, delay slot flag */
93 /* Unit presece register */
106 UPR_CUP = (255 << 24),
109 /* CPU configure register */
111 CPUCFGR_NSGF = (15 << 0),
112 CPUCFGR_CGF = (1 << 4),
113 CPUCFGR_OB32S = (1 << 5),
114 CPUCFGR_OB64S = (1 << 6),
115 CPUCFGR_OF32S = (1 << 7),
116 CPUCFGR_OF64S = (1 << 8),
117 CPUCFGR_OV64S = (1 << 9),
120 /* DMMU configure register */
122 DMMUCFGR_NTW = (3 << 0),
123 DMMUCFGR_NTS = (7 << 2),
124 DMMUCFGR_NAE = (7 << 5),
125 DMMUCFGR_CRI = (1 << 8),
126 DMMUCFGR_PRI = (1 << 9),
127 DMMUCFGR_TEIRI = (1 << 10),
128 DMMUCFGR_HTR = (1 << 11),
131 /* IMMU configure register */
133 IMMUCFGR_NTW = (3 << 0),
134 IMMUCFGR_NTS = (7 << 2),
135 IMMUCFGR_NAE = (7 << 5),
136 IMMUCFGR_CRI = (1 << 8),
137 IMMUCFGR_PRI = (1 << 9),
138 IMMUCFGR_TEIRI = (1 << 10),
139 IMMUCFGR_HTR = (1 << 11),
142 /* Float point control status register */
146 FPCSR_OVF = (1 << 3),
147 FPCSR_UNF = (1 << 4),
148 FPCSR_SNF = (1 << 5),
149 FPCSR_QNF = (1 << 6),
151 FPCSR_IXF = (1 << 8),
152 FPCSR_IVF = (1 << 9),
153 FPCSR_INF = (1 << 10),
154 FPCSR_DZF = (1 << 11),
157 /* Exceptions indices */
176 /* Supervisor register */
194 SR_SUMRA = (1 << 16),
198 /* OpenRISC Hardware Capabilities */
200 OPENRISC_FEATURE_NSGF = (15 << 0),
201 OPENRISC_FEATURE_CGF = (1 << 4),
202 OPENRISC_FEATURE_OB32S = (1 << 5),
203 OPENRISC_FEATURE_OB64S = (1 << 6),
204 OPENRISC_FEATURE_OF32S = (1 << 7),
205 OPENRISC_FEATURE_OF64S = (1 << 8),
206 OPENRISC_FEATURE_OV64S = (1 << 9),
209 /* Tick Timer Mode Register */
211 TTMR_TP = (0xfffffff),
219 TIMER_NONE = (0 << 30),
220 TIMER_INTR = (1 << 30),
221 TIMER_SHOT = (2 << 30),
222 TIMER_CONT = (3 << 30),
229 DTLB_MASK = (DTLB_SIZE-1),
232 ITLB_MASK = (ITLB_SIZE-1),
246 /* check if tlb available */
254 typedef struct OpenRISCTLBEntry {
259 #ifndef CONFIG_USER_ONLY
260 typedef struct CPUOpenRISCTLBContext {
261 OpenRISCTLBEntry itlb[ITLB_WAYS][ITLB_SIZE];
262 OpenRISCTLBEntry dtlb[DTLB_WAYS][DTLB_SIZE];
264 int (*cpu_openrisc_map_address_code)(struct OpenRISCCPU *cpu,
267 target_ulong address, int rw);
268 int (*cpu_openrisc_map_address_data)(struct OpenRISCCPU *cpu,
271 target_ulong address, int rw);
272 } CPUOpenRISCTLBContext;
275 typedef struct CPUOpenRISCState {
276 target_ulong gpr[32]; /* General registers */
277 target_ulong pc; /* Program counter */
278 target_ulong npc; /* Next PC */
279 target_ulong ppc; /* Prev PC */
280 target_ulong jmp_pc; /* Jump PC */
282 target_ulong machi; /* Multiply register MACHI */
283 target_ulong maclo; /* Multiply register MACLO */
285 target_ulong fpmaddhi; /* Multiply and add float register FPMADDHI */
286 target_ulong fpmaddlo; /* Multiply and add float register FPMADDLO */
288 target_ulong epcr; /* Exception PC register */
289 target_ulong eear; /* Exception EA register */
291 uint32_t sr; /* Supervisor register */
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 fpcsr; /* Float register */
299 float_status fp_status;
301 uint32_t flags; /* cpu_flags, we only use it for exception
303 uint32_t btaken; /* the SR_F bit */
307 #ifndef CONFIG_USER_ONLY
308 CPUOpenRISCTLBContext * tlb;
311 uint32_t ttmr; /* Timer tick mode register */
312 uint32_t ttcr; /* Timer tick count register */
314 uint32_t picmr; /* Interrupt mask register */
315 uint32_t picsr; /* Interrupt contrl register*/
317 void *irq[32]; /* Interrupt irq input */
322 * @env: #CPUOpenRISCState
326 typedef struct OpenRISCCPU {
331 CPUOpenRISCState env;
333 uint32_t feature; /* CPU Capabilities */
336 static inline OpenRISCCPU *openrisc_env_get_cpu(CPUOpenRISCState *env)
338 return container_of(env, OpenRISCCPU, env);
341 #define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))
343 #define ENV_OFFSET offsetof(OpenRISCCPU, env)
345 OpenRISCCPU *cpu_openrisc_init(const char *cpu_model);
347 void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
348 int cpu_openrisc_exec(CPUOpenRISCState *s);
349 void openrisc_cpu_do_interrupt(CPUState *cpu);
350 void openrisc_cpu_dump_state(CPUState *cpu, FILE *f,
351 fprintf_function cpu_fprintf, int flags);
352 hwaddr openrisc_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr);
353 int openrisc_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg);
354 int openrisc_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg);
355 void openrisc_translate_init(void);
356 int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
357 target_ulong address,
358 int rw, int mmu_idx);
359 int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);
361 #define cpu_list cpu_openrisc_list
362 #define cpu_exec cpu_openrisc_exec
363 #define cpu_gen_code cpu_openrisc_gen_code
364 #define cpu_handle_mmu_fault cpu_openrisc_handle_mmu_fault
365 #define cpu_signal_handler cpu_openrisc_signal_handler
367 #ifndef CONFIG_USER_ONLY
368 extern const struct VMStateDescription vmstate_openrisc_cpu;
370 /* hw/openrisc_pic.c */
371 void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
373 /* hw/openrisc_timer.c */
374 void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
375 void cpu_openrisc_count_update(OpenRISCCPU *cpu);
376 void cpu_openrisc_timer_update(OpenRISCCPU *cpu);
377 void cpu_openrisc_count_start(OpenRISCCPU *cpu);
378 void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
380 void cpu_openrisc_mmu_init(OpenRISCCPU *cpu);
381 int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
383 int *prot, target_ulong address, int rw);
384 int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
386 int *prot, target_ulong address, int rw);
387 int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
389 int *prot, target_ulong address, int rw);
392 static inline CPUOpenRISCState *cpu_init(const char *cpu_model)
394 OpenRISCCPU *cpu = cpu_openrisc_init(cpu_model);
401 #include "exec/cpu-all.h"
403 static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
405 target_ulong *cs_base, int *flags)
409 /* D_FLAG -- branch instruction exception */
410 *flags = (env->flags & D_FLAG);
413 static inline int cpu_mmu_index(CPUOpenRISCState *env)
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 #define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
422 static inline bool cpu_has_work(CPUState *cpu)
424 return cpu->interrupt_request & (CPU_INTERRUPT_HARD |
425 CPU_INTERRUPT_TIMER);
428 #include "exec/exec-all.h"
430 static inline target_ulong cpu_get_pc(CPUOpenRISCState *env)
435 #endif /* CPU_OPENRISC_H */