2 * QEMU generic PowerPC hardware System Emulator
4 * Copyright (c) 2003-2007 Jocelyn Mayer
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 #include "hw/ppc/ppc.h"
26 #include "hw/ppc/ppc_e500.h"
27 #include "qemu/timer.h"
28 #include "sysemu/sysemu.h"
29 #include "hw/timer/m48t59.h"
31 #include "hw/loader.h"
32 #include "sysemu/kvm.h"
35 //#define PPC_DEBUG_IRQ
36 //#define PPC_DEBUG_TB
39 # define LOG_IRQ(...) qemu_log_mask(CPU_LOG_INT, ## __VA_ARGS__)
41 # define LOG_IRQ(...) do { } while (0)
46 # define LOG_TB(...) qemu_log(__VA_ARGS__)
48 # define LOG_TB(...) do { } while (0)
51 static void cpu_ppc_tb_stop (CPUPPCState *env);
52 static void cpu_ppc_tb_start (CPUPPCState *env);
54 void ppc_set_irq(PowerPCCPU *cpu, int n_IRQ, int level)
56 CPUState *cs = CPU(cpu);
57 CPUPPCState *env = &cpu->env;
58 unsigned int old_pending = env->pending_interrupts;
61 env->pending_interrupts |= 1 << n_IRQ;
62 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
64 env->pending_interrupts &= ~(1 << n_IRQ);
65 if (env->pending_interrupts == 0) {
66 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
70 if (old_pending != env->pending_interrupts) {
72 kvmppc_set_interrupt(cpu, n_IRQ, level);
76 LOG_IRQ("%s: %p n_IRQ %d level %d => pending %08" PRIx32
77 "req %08x\n", __func__, env, n_IRQ, level,
78 env->pending_interrupts, CPU(cpu)->interrupt_request);
81 /* PowerPC 6xx / 7xx internal IRQ controller */
82 static void ppc6xx_set_irq(void *opaque, int pin, int level)
84 PowerPCCPU *cpu = opaque;
85 CPUPPCState *env = &cpu->env;
88 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
90 cur_level = (env->irq_input_state >> pin) & 1;
91 /* Don't generate spurious events */
92 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
93 CPUState *cs = CPU(cpu);
96 case PPC6xx_INPUT_TBEN:
97 /* Level sensitive - active high */
98 LOG_IRQ("%s: %s the time base\n",
99 __func__, level ? "start" : "stop");
101 cpu_ppc_tb_start(env);
103 cpu_ppc_tb_stop(env);
105 case PPC6xx_INPUT_INT:
106 /* Level sensitive - active high */
107 LOG_IRQ("%s: set the external IRQ state to %d\n",
109 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
111 case PPC6xx_INPUT_SMI:
112 /* Level sensitive - active high */
113 LOG_IRQ("%s: set the SMI IRQ state to %d\n",
115 ppc_set_irq(cpu, PPC_INTERRUPT_SMI, level);
117 case PPC6xx_INPUT_MCP:
118 /* Negative edge sensitive */
119 /* XXX: TODO: actual reaction may depends on HID0 status
120 * 603/604/740/750: check HID0[EMCP]
122 if (cur_level == 1 && level == 0) {
123 LOG_IRQ("%s: raise machine check state\n",
125 ppc_set_irq(cpu, PPC_INTERRUPT_MCK, 1);
128 case PPC6xx_INPUT_CKSTP_IN:
129 /* Level sensitive - active low */
130 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
131 /* XXX: Note that the only way to restart the CPU is to reset it */
133 LOG_IRQ("%s: stop the CPU\n", __func__);
137 case PPC6xx_INPUT_HRESET:
138 /* Level sensitive - active low */
140 LOG_IRQ("%s: reset the CPU\n", __func__);
141 cpu_interrupt(cs, CPU_INTERRUPT_RESET);
144 case PPC6xx_INPUT_SRESET:
145 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
147 ppc_set_irq(cpu, PPC_INTERRUPT_RESET, level);
150 /* Unknown pin - do nothing */
151 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
155 env->irq_input_state |= 1 << pin;
157 env->irq_input_state &= ~(1 << pin);
161 void ppc6xx_irq_init(CPUPPCState *env)
163 PowerPCCPU *cpu = ppc_env_get_cpu(env);
165 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, cpu,
169 #if defined(TARGET_PPC64)
170 /* PowerPC 970 internal IRQ controller */
171 static void ppc970_set_irq(void *opaque, int pin, int level)
173 PowerPCCPU *cpu = opaque;
174 CPUPPCState *env = &cpu->env;
177 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
179 cur_level = (env->irq_input_state >> pin) & 1;
180 /* Don't generate spurious events */
181 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
182 CPUState *cs = CPU(cpu);
185 case PPC970_INPUT_INT:
186 /* Level sensitive - active high */
187 LOG_IRQ("%s: set the external IRQ state to %d\n",
189 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
191 case PPC970_INPUT_THINT:
192 /* Level sensitive - active high */
193 LOG_IRQ("%s: set the SMI IRQ state to %d\n", __func__,
195 ppc_set_irq(cpu, PPC_INTERRUPT_THERM, level);
197 case PPC970_INPUT_MCP:
198 /* Negative edge sensitive */
199 /* XXX: TODO: actual reaction may depends on HID0 status
200 * 603/604/740/750: check HID0[EMCP]
202 if (cur_level == 1 && level == 0) {
203 LOG_IRQ("%s: raise machine check state\n",
205 ppc_set_irq(cpu, PPC_INTERRUPT_MCK, 1);
208 case PPC970_INPUT_CKSTP:
209 /* Level sensitive - active low */
210 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
212 LOG_IRQ("%s: stop the CPU\n", __func__);
215 LOG_IRQ("%s: restart the CPU\n", __func__);
220 case PPC970_INPUT_HRESET:
221 /* Level sensitive - active low */
223 cpu_interrupt(cs, CPU_INTERRUPT_RESET);
226 case PPC970_INPUT_SRESET:
227 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
229 ppc_set_irq(cpu, PPC_INTERRUPT_RESET, level);
231 case PPC970_INPUT_TBEN:
232 LOG_IRQ("%s: set the TBEN state to %d\n", __func__,
237 /* Unknown pin - do nothing */
238 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
242 env->irq_input_state |= 1 << pin;
244 env->irq_input_state &= ~(1 << pin);
248 void ppc970_irq_init(CPUPPCState *env)
250 PowerPCCPU *cpu = ppc_env_get_cpu(env);
252 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, cpu,
256 /* POWER7 internal IRQ controller */
257 static void power7_set_irq(void *opaque, int pin, int level)
259 PowerPCCPU *cpu = opaque;
260 CPUPPCState *env = &cpu->env;
262 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
266 case POWER7_INPUT_INT:
267 /* Level sensitive - active high */
268 LOG_IRQ("%s: set the external IRQ state to %d\n",
270 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
273 /* Unknown pin - do nothing */
274 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
278 env->irq_input_state |= 1 << pin;
280 env->irq_input_state &= ~(1 << pin);
284 void ppcPOWER7_irq_init(CPUPPCState *env)
286 PowerPCCPU *cpu = ppc_env_get_cpu(env);
288 env->irq_inputs = (void **)qemu_allocate_irqs(&power7_set_irq, cpu,
291 #endif /* defined(TARGET_PPC64) */
293 /* PowerPC 40x internal IRQ controller */
294 static void ppc40x_set_irq(void *opaque, int pin, int level)
296 PowerPCCPU *cpu = opaque;
297 CPUPPCState *env = &cpu->env;
300 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
302 cur_level = (env->irq_input_state >> pin) & 1;
303 /* Don't generate spurious events */
304 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
305 CPUState *cs = CPU(cpu);
308 case PPC40x_INPUT_RESET_SYS:
310 LOG_IRQ("%s: reset the PowerPC system\n",
312 ppc40x_system_reset(cpu);
315 case PPC40x_INPUT_RESET_CHIP:
317 LOG_IRQ("%s: reset the PowerPC chip\n", __func__);
318 ppc40x_chip_reset(cpu);
321 case PPC40x_INPUT_RESET_CORE:
322 /* XXX: TODO: update DBSR[MRR] */
324 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
325 ppc40x_core_reset(cpu);
328 case PPC40x_INPUT_CINT:
329 /* Level sensitive - active high */
330 LOG_IRQ("%s: set the critical IRQ state to %d\n",
332 ppc_set_irq(cpu, PPC_INTERRUPT_CEXT, level);
334 case PPC40x_INPUT_INT:
335 /* Level sensitive - active high */
336 LOG_IRQ("%s: set the external IRQ state to %d\n",
338 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
340 case PPC40x_INPUT_HALT:
341 /* Level sensitive - active low */
343 LOG_IRQ("%s: stop the CPU\n", __func__);
346 LOG_IRQ("%s: restart the CPU\n", __func__);
351 case PPC40x_INPUT_DEBUG:
352 /* Level sensitive - active high */
353 LOG_IRQ("%s: set the debug pin state to %d\n",
355 ppc_set_irq(cpu, PPC_INTERRUPT_DEBUG, level);
358 /* Unknown pin - do nothing */
359 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
363 env->irq_input_state |= 1 << pin;
365 env->irq_input_state &= ~(1 << pin);
369 void ppc40x_irq_init(CPUPPCState *env)
371 PowerPCCPU *cpu = ppc_env_get_cpu(env);
373 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
374 cpu, PPC40x_INPUT_NB);
377 /* PowerPC E500 internal IRQ controller */
378 static void ppce500_set_irq(void *opaque, int pin, int level)
380 PowerPCCPU *cpu = opaque;
381 CPUPPCState *env = &cpu->env;
384 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
386 cur_level = (env->irq_input_state >> pin) & 1;
387 /* Don't generate spurious events */
388 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
390 case PPCE500_INPUT_MCK:
392 LOG_IRQ("%s: reset the PowerPC system\n",
394 qemu_system_reset_request();
397 case PPCE500_INPUT_RESET_CORE:
399 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
400 ppc_set_irq(cpu, PPC_INTERRUPT_MCK, level);
403 case PPCE500_INPUT_CINT:
404 /* Level sensitive - active high */
405 LOG_IRQ("%s: set the critical IRQ state to %d\n",
407 ppc_set_irq(cpu, PPC_INTERRUPT_CEXT, level);
409 case PPCE500_INPUT_INT:
410 /* Level sensitive - active high */
411 LOG_IRQ("%s: set the core IRQ state to %d\n",
413 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
415 case PPCE500_INPUT_DEBUG:
416 /* Level sensitive - active high */
417 LOG_IRQ("%s: set the debug pin state to %d\n",
419 ppc_set_irq(cpu, PPC_INTERRUPT_DEBUG, level);
422 /* Unknown pin - do nothing */
423 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
427 env->irq_input_state |= 1 << pin;
429 env->irq_input_state &= ~(1 << pin);
433 void ppce500_irq_init(CPUPPCState *env)
435 PowerPCCPU *cpu = ppc_env_get_cpu(env);
437 env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
438 cpu, PPCE500_INPUT_NB);
441 /* Enable or Disable the E500 EPR capability */
442 void ppce500_set_mpic_proxy(bool enabled)
446 for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) {
447 PowerPCCPU *cpu = POWERPC_CPU(cs);
449 cpu->env.mpic_proxy = enabled;
451 kvmppc_set_mpic_proxy(cpu, enabled);
456 /*****************************************************************************/
457 /* PowerPC time base and decrementer emulation */
459 uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk, int64_t tb_offset)
461 /* TB time in tb periods */
462 return muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()) + tb_offset;
465 uint64_t cpu_ppc_load_tbl (CPUPPCState *env)
467 ppc_tb_t *tb_env = env->tb_env;
471 return env->spr[SPR_TBL];
474 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
475 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
480 static inline uint32_t _cpu_ppc_load_tbu(CPUPPCState *env)
482 ppc_tb_t *tb_env = env->tb_env;
485 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
486 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
491 uint32_t cpu_ppc_load_tbu (CPUPPCState *env)
494 return env->spr[SPR_TBU];
497 return _cpu_ppc_load_tbu(env);
500 static inline void cpu_ppc_store_tb(ppc_tb_t *tb_env, uint64_t vmclk,
501 int64_t *tb_offsetp, uint64_t value)
503 *tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec());
504 LOG_TB("%s: tb %016" PRIx64 " offset %08" PRIx64 "\n",
505 __func__, value, *tb_offsetp);
508 void cpu_ppc_store_tbl (CPUPPCState *env, uint32_t value)
510 ppc_tb_t *tb_env = env->tb_env;
513 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
514 tb &= 0xFFFFFFFF00000000ULL;
515 cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
516 &tb_env->tb_offset, tb | (uint64_t)value);
519 static inline void _cpu_ppc_store_tbu(CPUPPCState *env, uint32_t value)
521 ppc_tb_t *tb_env = env->tb_env;
524 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->tb_offset);
525 tb &= 0x00000000FFFFFFFFULL;
526 cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
527 &tb_env->tb_offset, ((uint64_t)value << 32) | tb);
530 void cpu_ppc_store_tbu (CPUPPCState *env, uint32_t value)
532 _cpu_ppc_store_tbu(env, value);
535 uint64_t cpu_ppc_load_atbl (CPUPPCState *env)
537 ppc_tb_t *tb_env = env->tb_env;
540 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
541 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
546 uint32_t cpu_ppc_load_atbu (CPUPPCState *env)
548 ppc_tb_t *tb_env = env->tb_env;
551 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
552 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
557 void cpu_ppc_store_atbl (CPUPPCState *env, uint32_t value)
559 ppc_tb_t *tb_env = env->tb_env;
562 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
563 tb &= 0xFFFFFFFF00000000ULL;
564 cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
565 &tb_env->atb_offset, tb | (uint64_t)value);
568 void cpu_ppc_store_atbu (CPUPPCState *env, uint32_t value)
570 ppc_tb_t *tb_env = env->tb_env;
573 tb = cpu_ppc_get_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), tb_env->atb_offset);
574 tb &= 0x00000000FFFFFFFFULL;
575 cpu_ppc_store_tb(tb_env, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL),
576 &tb_env->atb_offset, ((uint64_t)value << 32) | tb);
579 static void cpu_ppc_tb_stop (CPUPPCState *env)
581 ppc_tb_t *tb_env = env->tb_env;
582 uint64_t tb, atb, vmclk;
584 /* If the time base is already frozen, do nothing */
585 if (tb_env->tb_freq != 0) {
586 vmclk = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
587 /* Get the time base */
588 tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset);
589 /* Get the alternate time base */
590 atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset);
591 /* Store the time base value (ie compute the current offset) */
592 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
593 /* Store the alternate time base value (compute the current offset) */
594 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
595 /* Set the time base frequency to zero */
597 /* Now, the time bases are frozen to tb_offset / atb_offset value */
601 static void cpu_ppc_tb_start (CPUPPCState *env)
603 ppc_tb_t *tb_env = env->tb_env;
604 uint64_t tb, atb, vmclk;
606 /* If the time base is not frozen, do nothing */
607 if (tb_env->tb_freq == 0) {
608 vmclk = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
609 /* Get the time base from tb_offset */
610 tb = tb_env->tb_offset;
611 /* Get the alternate time base from atb_offset */
612 atb = tb_env->atb_offset;
613 /* Restore the tb frequency from the decrementer frequency */
614 tb_env->tb_freq = tb_env->decr_freq;
615 /* Store the time base value */
616 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
617 /* Store the alternate time base value */
618 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
622 static inline uint32_t _cpu_ppc_load_decr(CPUPPCState *env, uint64_t next)
624 ppc_tb_t *tb_env = env->tb_env;
628 diff = next - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
630 decr = muldiv64(diff, tb_env->decr_freq, get_ticks_per_sec());
631 } else if (tb_env->flags & PPC_TIMER_BOOKE) {
634 decr = -muldiv64(-diff, tb_env->decr_freq, get_ticks_per_sec());
636 LOG_TB("%s: %08" PRIx32 "\n", __func__, decr);
641 uint32_t cpu_ppc_load_decr (CPUPPCState *env)
643 ppc_tb_t *tb_env = env->tb_env;
646 return env->spr[SPR_DECR];
649 return _cpu_ppc_load_decr(env, tb_env->decr_next);
652 uint32_t cpu_ppc_load_hdecr (CPUPPCState *env)
654 ppc_tb_t *tb_env = env->tb_env;
656 return _cpu_ppc_load_decr(env, tb_env->hdecr_next);
659 uint64_t cpu_ppc_load_purr (CPUPPCState *env)
661 ppc_tb_t *tb_env = env->tb_env;
664 diff = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - tb_env->purr_start;
666 return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, get_ticks_per_sec());
669 /* When decrementer expires,
670 * all we need to do is generate or queue a CPU exception
672 static inline void cpu_ppc_decr_excp(PowerPCCPU *cpu)
675 LOG_TB("raise decrementer exception\n");
676 ppc_set_irq(cpu, PPC_INTERRUPT_DECR, 1);
679 static inline void cpu_ppc_hdecr_excp(PowerPCCPU *cpu)
682 LOG_TB("raise decrementer exception\n");
683 ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 1);
686 static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp,
687 struct QEMUTimer *timer,
688 void (*raise_excp)(PowerPCCPU *),
689 uint32_t decr, uint32_t value,
692 CPUPPCState *env = &cpu->env;
693 ppc_tb_t *tb_env = env->tb_env;
696 LOG_TB("%s: %08" PRIx32 " => %08" PRIx32 "\n", __func__,
700 /* KVM handles decrementer exceptions, we don't need our own timer */
704 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
705 next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq);
707 next += *nextp - now;
714 timer_mod(timer, next);
716 /* If we set a negative value and the decrementer was positive, raise an
719 if ((tb_env->flags & PPC_DECR_UNDERFLOW_TRIGGERED)
720 && (value & 0x80000000)
721 && !(decr & 0x80000000)) {
726 static inline void _cpu_ppc_store_decr(PowerPCCPU *cpu, uint32_t decr,
727 uint32_t value, int is_excp)
729 ppc_tb_t *tb_env = cpu->env.tb_env;
731 __cpu_ppc_store_decr(cpu, &tb_env->decr_next, tb_env->decr_timer,
732 &cpu_ppc_decr_excp, decr, value, is_excp);
735 void cpu_ppc_store_decr (CPUPPCState *env, uint32_t value)
737 PowerPCCPU *cpu = ppc_env_get_cpu(env);
739 _cpu_ppc_store_decr(cpu, cpu_ppc_load_decr(env), value, 0);
742 static void cpu_ppc_decr_cb(void *opaque)
744 PowerPCCPU *cpu = opaque;
746 _cpu_ppc_store_decr(cpu, 0x00000000, 0xFFFFFFFF, 1);
749 static inline void _cpu_ppc_store_hdecr(PowerPCCPU *cpu, uint32_t hdecr,
750 uint32_t value, int is_excp)
752 ppc_tb_t *tb_env = cpu->env.tb_env;
754 if (tb_env->hdecr_timer != NULL) {
755 __cpu_ppc_store_decr(cpu, &tb_env->hdecr_next, tb_env->hdecr_timer,
756 &cpu_ppc_hdecr_excp, hdecr, value, is_excp);
760 void cpu_ppc_store_hdecr (CPUPPCState *env, uint32_t value)
762 PowerPCCPU *cpu = ppc_env_get_cpu(env);
764 _cpu_ppc_store_hdecr(cpu, cpu_ppc_load_hdecr(env), value, 0);
767 static void cpu_ppc_hdecr_cb(void *opaque)
769 PowerPCCPU *cpu = opaque;
771 _cpu_ppc_store_hdecr(cpu, 0x00000000, 0xFFFFFFFF, 1);
774 static void cpu_ppc_store_purr(PowerPCCPU *cpu, uint64_t value)
776 ppc_tb_t *tb_env = cpu->env.tb_env;
778 tb_env->purr_load = value;
779 tb_env->purr_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
782 static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
784 CPUPPCState *env = opaque;
785 PowerPCCPU *cpu = ppc_env_get_cpu(env);
786 ppc_tb_t *tb_env = env->tb_env;
788 tb_env->tb_freq = freq;
789 tb_env->decr_freq = freq;
790 /* There is a bug in Linux 2.4 kernels:
791 * if a decrementer exception is pending when it enables msr_ee at startup,
792 * it's not ready to handle it...
794 _cpu_ppc_store_decr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 0);
795 _cpu_ppc_store_hdecr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 0);
796 cpu_ppc_store_purr(cpu, 0x0000000000000000ULL);
799 /* Set up (once) timebase frequency (in Hz) */
800 clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq)
802 PowerPCCPU *cpu = ppc_env_get_cpu(env);
805 tb_env = g_malloc0(sizeof(ppc_tb_t));
806 env->tb_env = tb_env;
807 tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED;
808 /* Create new timer */
809 tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_decr_cb, cpu);
811 /* XXX: find a suitable condition to enable the hypervisor decrementer
813 tb_env->hdecr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_ppc_hdecr_cb,
816 tb_env->hdecr_timer = NULL;
818 cpu_ppc_set_tb_clk(env, freq);
820 return &cpu_ppc_set_tb_clk;
823 /* Specific helpers for POWER & PowerPC 601 RTC */
825 static clk_setup_cb cpu_ppc601_rtc_init (CPUPPCState *env)
827 return cpu_ppc_tb_init(env, 7812500);
831 void cpu_ppc601_store_rtcu (CPUPPCState *env, uint32_t value)
833 _cpu_ppc_store_tbu(env, value);
836 uint32_t cpu_ppc601_load_rtcu (CPUPPCState *env)
838 return _cpu_ppc_load_tbu(env);
841 void cpu_ppc601_store_rtcl (CPUPPCState *env, uint32_t value)
843 cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
846 uint32_t cpu_ppc601_load_rtcl (CPUPPCState *env)
848 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
851 /*****************************************************************************/
852 /* PowerPC 40x timers */
855 typedef struct ppc40x_timer_t ppc40x_timer_t;
856 struct ppc40x_timer_t {
857 uint64_t pit_reload; /* PIT auto-reload value */
858 uint64_t fit_next; /* Tick for next FIT interrupt */
859 struct QEMUTimer *fit_timer;
860 uint64_t wdt_next; /* Tick for next WDT interrupt */
861 struct QEMUTimer *wdt_timer;
863 /* 405 have the PIT, 440 have a DECR. */
864 unsigned int decr_excp;
867 /* Fixed interval timer */
868 static void cpu_4xx_fit_cb (void *opaque)
873 ppc40x_timer_t *ppc40x_timer;
877 cpu = ppc_env_get_cpu(env);
878 tb_env = env->tb_env;
879 ppc40x_timer = tb_env->opaque;
880 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
881 switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
895 /* Cannot occur, but makes gcc happy */
898 next = now + muldiv64(next, get_ticks_per_sec(), tb_env->tb_freq);
901 timer_mod(ppc40x_timer->fit_timer, next);
902 env->spr[SPR_40x_TSR] |= 1 << 26;
903 if ((env->spr[SPR_40x_TCR] >> 23) & 0x1) {
904 ppc_set_irq(cpu, PPC_INTERRUPT_FIT, 1);
906 LOG_TB("%s: ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__,
907 (int)((env->spr[SPR_40x_TCR] >> 23) & 0x1),
908 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
911 /* Programmable interval timer */
912 static void start_stop_pit (CPUPPCState *env, ppc_tb_t *tb_env, int is_excp)
914 ppc40x_timer_t *ppc40x_timer;
917 ppc40x_timer = tb_env->opaque;
918 if (ppc40x_timer->pit_reload <= 1 ||
919 !((env->spr[SPR_40x_TCR] >> 26) & 0x1) ||
920 (is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) {
922 LOG_TB("%s: stop PIT\n", __func__);
923 timer_del(tb_env->decr_timer);
925 LOG_TB("%s: start PIT %016" PRIx64 "\n",
926 __func__, ppc40x_timer->pit_reload);
927 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
928 next = now + muldiv64(ppc40x_timer->pit_reload,
929 get_ticks_per_sec(), tb_env->decr_freq);
931 next += tb_env->decr_next - now;
934 timer_mod(tb_env->decr_timer, next);
935 tb_env->decr_next = next;
939 static void cpu_4xx_pit_cb (void *opaque)
944 ppc40x_timer_t *ppc40x_timer;
947 cpu = ppc_env_get_cpu(env);
948 tb_env = env->tb_env;
949 ppc40x_timer = tb_env->opaque;
950 env->spr[SPR_40x_TSR] |= 1 << 27;
951 if ((env->spr[SPR_40x_TCR] >> 26) & 0x1) {
952 ppc_set_irq(cpu, ppc40x_timer->decr_excp, 1);
954 start_stop_pit(env, tb_env, 1);
955 LOG_TB("%s: ar %d ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx " "
956 "%016" PRIx64 "\n", __func__,
957 (int)((env->spr[SPR_40x_TCR] >> 22) & 0x1),
958 (int)((env->spr[SPR_40x_TCR] >> 26) & 0x1),
959 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR],
960 ppc40x_timer->pit_reload);
964 static void cpu_4xx_wdt_cb (void *opaque)
969 ppc40x_timer_t *ppc40x_timer;
973 cpu = ppc_env_get_cpu(env);
974 tb_env = env->tb_env;
975 ppc40x_timer = tb_env->opaque;
976 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
977 switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
991 /* Cannot occur, but makes gcc happy */
994 next = now + muldiv64(next, get_ticks_per_sec(), tb_env->decr_freq);
997 LOG_TB("%s: TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__,
998 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
999 switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
1002 timer_mod(ppc40x_timer->wdt_timer, next);
1003 ppc40x_timer->wdt_next = next;
1004 env->spr[SPR_40x_TSR] |= 1 << 31;
1007 timer_mod(ppc40x_timer->wdt_timer, next);
1008 ppc40x_timer->wdt_next = next;
1009 env->spr[SPR_40x_TSR] |= 1 << 30;
1010 if ((env->spr[SPR_40x_TCR] >> 27) & 0x1) {
1011 ppc_set_irq(cpu, PPC_INTERRUPT_WDT, 1);
1015 env->spr[SPR_40x_TSR] &= ~0x30000000;
1016 env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
1017 switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) {
1021 case 0x1: /* Core reset */
1022 ppc40x_core_reset(cpu);
1024 case 0x2: /* Chip reset */
1025 ppc40x_chip_reset(cpu);
1027 case 0x3: /* System reset */
1028 ppc40x_system_reset(cpu);
1034 void store_40x_pit (CPUPPCState *env, target_ulong val)
1037 ppc40x_timer_t *ppc40x_timer;
1039 tb_env = env->tb_env;
1040 ppc40x_timer = tb_env->opaque;
1041 LOG_TB("%s val" TARGET_FMT_lx "\n", __func__, val);
1042 ppc40x_timer->pit_reload = val;
1043 start_stop_pit(env, tb_env, 0);
1046 target_ulong load_40x_pit (CPUPPCState *env)
1048 return cpu_ppc_load_decr(env);
1051 static void ppc_40x_set_tb_clk (void *opaque, uint32_t freq)
1053 CPUPPCState *env = opaque;
1054 ppc_tb_t *tb_env = env->tb_env;
1056 LOG_TB("%s set new frequency to %" PRIu32 "\n", __func__,
1058 tb_env->tb_freq = freq;
1059 tb_env->decr_freq = freq;
1060 /* XXX: we should also update all timers */
1063 clk_setup_cb ppc_40x_timers_init (CPUPPCState *env, uint32_t freq,
1064 unsigned int decr_excp)
1067 ppc40x_timer_t *ppc40x_timer;
1069 tb_env = g_malloc0(sizeof(ppc_tb_t));
1070 env->tb_env = tb_env;
1071 tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED;
1072 ppc40x_timer = g_malloc0(sizeof(ppc40x_timer_t));
1073 tb_env->tb_freq = freq;
1074 tb_env->decr_freq = freq;
1075 tb_env->opaque = ppc40x_timer;
1076 LOG_TB("%s freq %" PRIu32 "\n", __func__, freq);
1077 if (ppc40x_timer != NULL) {
1078 /* We use decr timer for PIT */
1079 tb_env->decr_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_4xx_pit_cb, env);
1080 ppc40x_timer->fit_timer =
1081 timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_4xx_fit_cb, env);
1082 ppc40x_timer->wdt_timer =
1083 timer_new_ns(QEMU_CLOCK_VIRTUAL, &cpu_4xx_wdt_cb, env);
1084 ppc40x_timer->decr_excp = decr_excp;
1087 return &ppc_40x_set_tb_clk;
1090 /*****************************************************************************/
1091 /* Embedded PowerPC Device Control Registers */
1092 typedef struct ppc_dcrn_t ppc_dcrn_t;
1094 dcr_read_cb dcr_read;
1095 dcr_write_cb dcr_write;
1099 /* XXX: on 460, DCR addresses are 32 bits wide,
1100 * using DCRIPR to get the 22 upper bits of the DCR address
1102 #define DCRN_NB 1024
1104 ppc_dcrn_t dcrn[DCRN_NB];
1105 int (*read_error)(int dcrn);
1106 int (*write_error)(int dcrn);
1109 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1113 if (dcrn < 0 || dcrn >= DCRN_NB)
1115 dcr = &dcr_env->dcrn[dcrn];
1116 if (dcr->dcr_read == NULL)
1118 *valp = (*dcr->dcr_read)(dcr->opaque, dcrn);
1123 if (dcr_env->read_error != NULL)
1124 return (*dcr_env->read_error)(dcrn);
1129 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1133 if (dcrn < 0 || dcrn >= DCRN_NB)
1135 dcr = &dcr_env->dcrn[dcrn];
1136 if (dcr->dcr_write == NULL)
1138 (*dcr->dcr_write)(dcr->opaque, dcrn, val);
1143 if (dcr_env->write_error != NULL)
1144 return (*dcr_env->write_error)(dcrn);
1149 int ppc_dcr_register (CPUPPCState *env, int dcrn, void *opaque,
1150 dcr_read_cb dcr_read, dcr_write_cb dcr_write)
1155 dcr_env = env->dcr_env;
1156 if (dcr_env == NULL)
1158 if (dcrn < 0 || dcrn >= DCRN_NB)
1160 dcr = &dcr_env->dcrn[dcrn];
1161 if (dcr->opaque != NULL ||
1162 dcr->dcr_read != NULL ||
1163 dcr->dcr_write != NULL)
1165 dcr->opaque = opaque;
1166 dcr->dcr_read = dcr_read;
1167 dcr->dcr_write = dcr_write;
1172 int ppc_dcr_init (CPUPPCState *env, int (*read_error)(int dcrn),
1173 int (*write_error)(int dcrn))
1177 dcr_env = g_malloc0(sizeof(ppc_dcr_t));
1178 dcr_env->read_error = read_error;
1179 dcr_env->write_error = write_error;
1180 env->dcr_env = dcr_env;
1185 /*****************************************************************************/
1187 void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
1199 printf("Set loglevel to %04" PRIx32 "\n", val);
1200 qemu_set_log(val | 0x100);
1205 /*****************************************************************************/
1207 static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr)
1209 return (*nvram->read_fn)(nvram->opaque, addr);
1212 static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val)
1214 (*nvram->write_fn)(nvram->opaque, addr, val);
1217 static void NVRAM_set_byte(nvram_t *nvram, uint32_t addr, uint8_t value)
1219 nvram_write(nvram, addr, value);
1222 static uint8_t NVRAM_get_byte(nvram_t *nvram, uint32_t addr)
1224 return nvram_read(nvram, addr);
1227 static void NVRAM_set_word(nvram_t *nvram, uint32_t addr, uint16_t value)
1229 nvram_write(nvram, addr, value >> 8);
1230 nvram_write(nvram, addr + 1, value & 0xFF);
1233 static uint16_t NVRAM_get_word(nvram_t *nvram, uint32_t addr)
1237 tmp = nvram_read(nvram, addr) << 8;
1238 tmp |= nvram_read(nvram, addr + 1);
1243 static void NVRAM_set_lword(nvram_t *nvram, uint32_t addr, uint32_t value)
1245 nvram_write(nvram, addr, value >> 24);
1246 nvram_write(nvram, addr + 1, (value >> 16) & 0xFF);
1247 nvram_write(nvram, addr + 2, (value >> 8) & 0xFF);
1248 nvram_write(nvram, addr + 3, value & 0xFF);
1251 uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr)
1255 tmp = nvram_read(nvram, addr) << 24;
1256 tmp |= nvram_read(nvram, addr + 1) << 16;
1257 tmp |= nvram_read(nvram, addr + 2) << 8;
1258 tmp |= nvram_read(nvram, addr + 3);
1263 static void NVRAM_set_string(nvram_t *nvram, uint32_t addr, const char *str,
1268 for (i = 0; i < max && str[i] != '\0'; i++) {
1269 nvram_write(nvram, addr + i, str[i]);
1271 nvram_write(nvram, addr + i, str[i]);
1272 nvram_write(nvram, addr + max - 1, '\0');
1275 int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max)
1279 memset(dst, 0, max);
1280 for (i = 0; i < max; i++) {
1281 dst[i] = NVRAM_get_byte(nvram, addr + i);
1289 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
1292 uint16_t pd, pd1, pd2;
1297 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
1298 tmp ^= (pd1 << 3) | (pd1 << 8);
1299 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
1304 static uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count)
1307 uint16_t crc = 0xFFFF;
1312 for (i = 0; i != count; i++) {
1313 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
1316 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
1322 #define CMDLINE_ADDR 0x017ff000
1324 int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
1326 uint32_t RAM_size, int boot_device,
1327 uint32_t kernel_image, uint32_t kernel_size,
1328 const char *cmdline,
1329 uint32_t initrd_image, uint32_t initrd_size,
1330 uint32_t NVRAM_image,
1331 int width, int height, int depth)
1335 /* Set parameters for Open Hack'Ware BIOS */
1336 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
1337 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
1338 NVRAM_set_word(nvram, 0x14, NVRAM_size);
1339 NVRAM_set_string(nvram, 0x20, arch, 16);
1340 NVRAM_set_lword(nvram, 0x30, RAM_size);
1341 NVRAM_set_byte(nvram, 0x34, boot_device);
1342 NVRAM_set_lword(nvram, 0x38, kernel_image);
1343 NVRAM_set_lword(nvram, 0x3C, kernel_size);
1345 /* XXX: put the cmdline in NVRAM too ? */
1346 pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR, cmdline);
1347 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
1348 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
1350 NVRAM_set_lword(nvram, 0x40, 0);
1351 NVRAM_set_lword(nvram, 0x44, 0);
1353 NVRAM_set_lword(nvram, 0x48, initrd_image);
1354 NVRAM_set_lword(nvram, 0x4C, initrd_size);
1355 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
1357 NVRAM_set_word(nvram, 0x54, width);
1358 NVRAM_set_word(nvram, 0x56, height);
1359 NVRAM_set_word(nvram, 0x58, depth);
1360 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
1361 NVRAM_set_word(nvram, 0xFC, crc);