2 * OpenRISC virtual CPU header.
4 * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
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 "softfloat.h"
36 #include "qapi/error.h"
38 #define TYPE_OPENRISC_CPU "or32-cpu"
40 #define OPENRISC_CPU_CLASS(klass) \
41 OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
42 #define OPENRISC_CPU(obj) \
43 OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
44 #define OPENRISC_CPU_GET_CLASS(obj) \
45 OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)
49 * @parent_reset: The parent class' reset handler.
51 * A OpenRISC CPU model.
53 typedef struct OpenRISCCPUClass {
55 CPUClass parent_class;
58 void (*parent_reset)(CPUState *cpu);
61 #define NB_MMU_MODES 3
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
86 /* Internal flags, delay slot flag */
92 /* Unit presece register */
105 UPR_CUP = (255 << 24),
108 /* CPU configure register */
110 CPUCFGR_NSGF = (15 << 0),
111 CPUCFGR_CGF = (1 << 4),
112 CPUCFGR_OB32S = (1 << 5),
113 CPUCFGR_OB64S = (1 << 6),
114 CPUCFGR_OF32S = (1 << 7),
115 CPUCFGR_OF64S = (1 << 8),
116 CPUCFGR_OV64S = (1 << 9),
119 /* DMMU configure register */
121 DMMUCFGR_NTW = (3 << 0),
122 DMMUCFGR_NTS = (7 << 2),
123 DMMUCFGR_NAE = (7 << 5),
124 DMMUCFGR_CRI = (1 << 8),
125 DMMUCFGR_PRI = (1 << 9),
126 DMMUCFGR_TEIRI = (1 << 10),
127 DMMUCFGR_HTR = (1 << 11),
130 /* IMMU configure register */
132 IMMUCFGR_NTW = (3 << 0),
133 IMMUCFGR_NTS = (7 << 2),
134 IMMUCFGR_NAE = (7 << 5),
135 IMMUCFGR_CRI = (1 << 8),
136 IMMUCFGR_PRI = (1 << 9),
137 IMMUCFGR_TEIRI = (1 << 10),
138 IMMUCFGR_HTR = (1 << 11),
141 /* Float point control status register */
145 FPCSR_OVF = (1 << 3),
146 FPCSR_UNF = (1 << 4),
147 FPCSR_SNF = (1 << 5),
148 FPCSR_QNF = (1 << 6),
150 FPCSR_IXF = (1 << 8),
151 FPCSR_IVF = (1 << 9),
152 FPCSR_INF = (1 << 10),
153 FPCSR_DZF = (1 << 11),
156 /* Exceptions indices */
175 /* Supervisor register */
193 SR_SUMRA = (1 << 16),
197 /* OpenRISC Hardware Capabilities */
199 OPENRISC_FEATURE_NSGF = (15 << 0),
200 OPENRISC_FEATURE_CGF = (1 << 4),
201 OPENRISC_FEATURE_OB32S = (1 << 5),
202 OPENRISC_FEATURE_OB64S = (1 << 6),
203 OPENRISC_FEATURE_OF32S = (1 << 7),
204 OPENRISC_FEATURE_OF64S = (1 << 8),
205 OPENRISC_FEATURE_OV64S = (1 << 9),
208 /* Tick Timer Mode Register */
210 TTMR_TP = (0xfffffff),
218 TIMER_NONE = (0 << 30),
219 TIMER_INTR = (1 << 30),
220 TIMER_SHOT = (2 << 30),
221 TIMER_CONT = (3 << 30),
228 DTLB_MASK = (DTLB_SIZE-1),
231 ITLB_MASK = (ITLB_SIZE-1),
245 /* check if tlb available */
253 typedef struct OpenRISCTLBEntry {
258 #ifndef CONFIG_USER_ONLY
259 typedef struct CPUOpenRISCTLBContext {
260 OpenRISCTLBEntry itlb[ITLB_WAYS][ITLB_SIZE];
261 OpenRISCTLBEntry dtlb[DTLB_WAYS][DTLB_SIZE];
263 int (*cpu_openrisc_map_address_code)(struct OpenRISCCPU *cpu,
266 target_ulong address, int rw);
267 int (*cpu_openrisc_map_address_data)(struct OpenRISCCPU *cpu,
270 target_ulong address, int rw);
271 } CPUOpenRISCTLBContext;
274 typedef struct CPUOpenRISCState {
275 target_ulong gpr[32]; /* General registers */
276 target_ulong pc; /* Program counter */
277 target_ulong npc; /* Next PC */
278 target_ulong ppc; /* Prev PC */
279 target_ulong jmp_pc; /* Jump PC */
281 target_ulong machi; /* Multiply register MACHI */
282 target_ulong maclo; /* Multiply register MACLO */
284 target_ulong fpmaddhi; /* Multiply and add float register FPMADDHI */
285 target_ulong fpmaddlo; /* Multiply and add float register FPMADDLO */
287 target_ulong epcr; /* Exception PC register */
288 target_ulong eear; /* Exception EA register */
290 uint32_t sr; /* Supervisor register */
291 uint32_t vr; /* Version register */
292 uint32_t upr; /* Unit presence register */
293 uint32_t cpucfgr; /* CPU configure register */
294 uint32_t dmmucfgr; /* DMMU configure register */
295 uint32_t immucfgr; /* IMMU configure register */
296 uint32_t esr; /* Exception supervisor register */
297 uint32_t fpcsr; /* Float register */
298 float_status fp_status;
300 uint32_t flags; /* cpu_flags, we only use it for exception
302 uint32_t btaken; /* the SR_F bit */
306 #ifndef CONFIG_USER_ONLY
307 CPUOpenRISCTLBContext * tlb;
309 struct QEMUTimer *timer;
310 uint32_t ttmr; /* Timer tick mode register */
311 uint32_t ttcr; /* Timer tick count register */
313 uint32_t picmr; /* Interrupt mask register */
314 uint32_t picsr; /* Interrupt contrl register*/
316 void *irq[32]; /* Interrupt irq input */
321 * @env: #CPUOpenRISCState
325 typedef struct OpenRISCCPU {
330 CPUOpenRISCState env;
332 uint32_t feature; /* CPU Capabilities */
335 static inline OpenRISCCPU *openrisc_env_get_cpu(CPUOpenRISCState *env)
337 return OPENRISC_CPU(container_of(env, OpenRISCCPU, env));
340 #define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))
342 OpenRISCCPU *cpu_openrisc_init(const char *cpu_model);
343 void openrisc_cpu_realize(Object *obj, Error **errp);
345 void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
346 int cpu_openrisc_exec(CPUOpenRISCState *s);
347 void do_interrupt(CPUOpenRISCState *env);
348 void openrisc_translate_init(void);
349 int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
350 target_ulong address,
351 int rw, int mmu_idx);
352 int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);
354 #define cpu_list cpu_openrisc_list
355 #define cpu_exec cpu_openrisc_exec
356 #define cpu_gen_code cpu_openrisc_gen_code
357 #define cpu_handle_mmu_fault cpu_openrisc_handle_mmu_fault
358 #define cpu_signal_handler cpu_openrisc_signal_handler
360 #ifndef CONFIG_USER_ONLY
361 /* hw/openrisc_pic.c */
362 void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
364 /* hw/openrisc_timer.c */
365 void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
366 void cpu_openrisc_count_update(OpenRISCCPU *cpu);
367 void cpu_openrisc_count_start(OpenRISCCPU *cpu);
368 void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
370 void cpu_openrisc_mmu_init(OpenRISCCPU *cpu);
371 int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
373 int *prot, target_ulong address, int rw);
374 int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
376 int *prot, target_ulong address, int rw);
377 int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
379 int *prot, target_ulong address, int rw);
382 static inline CPUOpenRISCState *cpu_init(const char *cpu_model)
384 OpenRISCCPU *cpu = cpu_openrisc_init(cpu_model);
391 #if defined(CONFIG_USER_ONLY)
392 static inline void cpu_clone_regs(CPUOpenRISCState *env, target_ulong newsp)
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 CPUOpenRISCState *env = &OPENRISC_CPU(cpu)->env;
426 return env->interrupt_request & (CPU_INTERRUPT_HARD |
427 CPU_INTERRUPT_TIMER);
430 #include "exec/exec-all.h"
432 static inline target_ulong cpu_get_pc(CPUOpenRISCState *env)
437 static inline void cpu_pc_from_tb(CPUOpenRISCState *env, TranslationBlock *tb)
442 #endif /* CPU_OPENRISC_H */