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 "qemu/timer.h"
27 #include "sysemu/sysemu.h"
28 #include "hw/timer/m48t59.h"
30 #include "hw/loader.h"
31 #include "sysemu/kvm.h"
34 //#define PPC_DEBUG_IRQ
35 //#define PPC_DEBUG_TB
38 # define LOG_IRQ(...) qemu_log_mask(CPU_LOG_INT, ## __VA_ARGS__)
40 # define LOG_IRQ(...) do { } while (0)
45 # define LOG_TB(...) qemu_log(__VA_ARGS__)
47 # define LOG_TB(...) do { } while (0)
50 static void cpu_ppc_tb_stop (CPUPPCState *env);
51 static void cpu_ppc_tb_start (CPUPPCState *env);
53 void ppc_set_irq(PowerPCCPU *cpu, int n_IRQ, int level)
55 CPUState *cs = CPU(cpu);
56 CPUPPCState *env = &cpu->env;
57 unsigned int old_pending = env->pending_interrupts;
60 env->pending_interrupts |= 1 << n_IRQ;
61 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
63 env->pending_interrupts &= ~(1 << n_IRQ);
64 if (env->pending_interrupts == 0) {
65 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
69 if (old_pending != env->pending_interrupts) {
71 kvmppc_set_interrupt(cpu, n_IRQ, level);
75 LOG_IRQ("%s: %p n_IRQ %d level %d => pending %08" PRIx32
76 "req %08x\n", __func__, env, n_IRQ, level,
77 env->pending_interrupts, CPU(cpu)->interrupt_request);
80 /* PowerPC 6xx / 7xx internal IRQ controller */
81 static void ppc6xx_set_irq(void *opaque, int pin, int level)
83 PowerPCCPU *cpu = opaque;
84 CPUPPCState *env = &cpu->env;
87 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
89 cur_level = (env->irq_input_state >> pin) & 1;
90 /* Don't generate spurious events */
91 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
92 CPUState *cs = CPU(cpu);
95 case PPC6xx_INPUT_TBEN:
96 /* Level sensitive - active high */
97 LOG_IRQ("%s: %s the time base\n",
98 __func__, level ? "start" : "stop");
100 cpu_ppc_tb_start(env);
102 cpu_ppc_tb_stop(env);
104 case PPC6xx_INPUT_INT:
105 /* Level sensitive - active high */
106 LOG_IRQ("%s: set the external IRQ state to %d\n",
108 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
110 case PPC6xx_INPUT_SMI:
111 /* Level sensitive - active high */
112 LOG_IRQ("%s: set the SMI IRQ state to %d\n",
114 ppc_set_irq(cpu, PPC_INTERRUPT_SMI, level);
116 case PPC6xx_INPUT_MCP:
117 /* Negative edge sensitive */
118 /* XXX: TODO: actual reaction may depends on HID0 status
119 * 603/604/740/750: check HID0[EMCP]
121 if (cur_level == 1 && level == 0) {
122 LOG_IRQ("%s: raise machine check state\n",
124 ppc_set_irq(cpu, PPC_INTERRUPT_MCK, 1);
127 case PPC6xx_INPUT_CKSTP_IN:
128 /* Level sensitive - active low */
129 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
130 /* XXX: Note that the only way to restart the CPU is to reset it */
132 LOG_IRQ("%s: stop the CPU\n", __func__);
136 case PPC6xx_INPUT_HRESET:
137 /* Level sensitive - active low */
139 LOG_IRQ("%s: reset the CPU\n", __func__);
140 cpu_interrupt(cs, CPU_INTERRUPT_RESET);
143 case PPC6xx_INPUT_SRESET:
144 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
146 ppc_set_irq(cpu, PPC_INTERRUPT_RESET, level);
149 /* Unknown pin - do nothing */
150 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
154 env->irq_input_state |= 1 << pin;
156 env->irq_input_state &= ~(1 << pin);
160 void ppc6xx_irq_init(CPUPPCState *env)
162 PowerPCCPU *cpu = ppc_env_get_cpu(env);
164 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, cpu,
168 #if defined(TARGET_PPC64)
169 /* PowerPC 970 internal IRQ controller */
170 static void ppc970_set_irq(void *opaque, int pin, int level)
172 PowerPCCPU *cpu = opaque;
173 CPUPPCState *env = &cpu->env;
176 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
178 cur_level = (env->irq_input_state >> pin) & 1;
179 /* Don't generate spurious events */
180 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
181 CPUState *cs = CPU(cpu);
184 case PPC970_INPUT_INT:
185 /* Level sensitive - active high */
186 LOG_IRQ("%s: set the external IRQ state to %d\n",
188 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
190 case PPC970_INPUT_THINT:
191 /* Level sensitive - active high */
192 LOG_IRQ("%s: set the SMI IRQ state to %d\n", __func__,
194 ppc_set_irq(cpu, PPC_INTERRUPT_THERM, level);
196 case PPC970_INPUT_MCP:
197 /* Negative edge sensitive */
198 /* XXX: TODO: actual reaction may depends on HID0 status
199 * 603/604/740/750: check HID0[EMCP]
201 if (cur_level == 1 && level == 0) {
202 LOG_IRQ("%s: raise machine check state\n",
204 ppc_set_irq(cpu, PPC_INTERRUPT_MCK, 1);
207 case PPC970_INPUT_CKSTP:
208 /* Level sensitive - active low */
209 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
211 LOG_IRQ("%s: stop the CPU\n", __func__);
214 LOG_IRQ("%s: restart the CPU\n", __func__);
219 case PPC970_INPUT_HRESET:
220 /* Level sensitive - active low */
222 cpu_interrupt(cs, CPU_INTERRUPT_RESET);
225 case PPC970_INPUT_SRESET:
226 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
228 ppc_set_irq(cpu, PPC_INTERRUPT_RESET, level);
230 case PPC970_INPUT_TBEN:
231 LOG_IRQ("%s: set the TBEN state to %d\n", __func__,
236 /* Unknown pin - do nothing */
237 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
241 env->irq_input_state |= 1 << pin;
243 env->irq_input_state &= ~(1 << pin);
247 void ppc970_irq_init(CPUPPCState *env)
249 PowerPCCPU *cpu = ppc_env_get_cpu(env);
251 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, cpu,
255 /* POWER7 internal IRQ controller */
256 static void power7_set_irq(void *opaque, int pin, int level)
258 PowerPCCPU *cpu = opaque;
259 CPUPPCState *env = &cpu->env;
261 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
265 case POWER7_INPUT_INT:
266 /* Level sensitive - active high */
267 LOG_IRQ("%s: set the external IRQ state to %d\n",
269 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
272 /* Unknown pin - do nothing */
273 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
277 env->irq_input_state |= 1 << pin;
279 env->irq_input_state &= ~(1 << pin);
283 void ppcPOWER7_irq_init(CPUPPCState *env)
285 PowerPCCPU *cpu = ppc_env_get_cpu(env);
287 env->irq_inputs = (void **)qemu_allocate_irqs(&power7_set_irq, cpu,
290 #endif /* defined(TARGET_PPC64) */
292 /* PowerPC 40x internal IRQ controller */
293 static void ppc40x_set_irq(void *opaque, int pin, int level)
295 PowerPCCPU *cpu = opaque;
296 CPUPPCState *env = &cpu->env;
299 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
301 cur_level = (env->irq_input_state >> pin) & 1;
302 /* Don't generate spurious events */
303 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
304 CPUState *cs = CPU(cpu);
307 case PPC40x_INPUT_RESET_SYS:
309 LOG_IRQ("%s: reset the PowerPC system\n",
311 ppc40x_system_reset(cpu);
314 case PPC40x_INPUT_RESET_CHIP:
316 LOG_IRQ("%s: reset the PowerPC chip\n", __func__);
317 ppc40x_chip_reset(cpu);
320 case PPC40x_INPUT_RESET_CORE:
321 /* XXX: TODO: update DBSR[MRR] */
323 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
324 ppc40x_core_reset(cpu);
327 case PPC40x_INPUT_CINT:
328 /* Level sensitive - active high */
329 LOG_IRQ("%s: set the critical IRQ state to %d\n",
331 ppc_set_irq(cpu, PPC_INTERRUPT_CEXT, level);
333 case PPC40x_INPUT_INT:
334 /* Level sensitive - active high */
335 LOG_IRQ("%s: set the external IRQ state to %d\n",
337 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
339 case PPC40x_INPUT_HALT:
340 /* Level sensitive - active low */
342 LOG_IRQ("%s: stop the CPU\n", __func__);
345 LOG_IRQ("%s: restart the CPU\n", __func__);
350 case PPC40x_INPUT_DEBUG:
351 /* Level sensitive - active high */
352 LOG_IRQ("%s: set the debug pin state to %d\n",
354 ppc_set_irq(cpu, PPC_INTERRUPT_DEBUG, level);
357 /* Unknown pin - do nothing */
358 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
362 env->irq_input_state |= 1 << pin;
364 env->irq_input_state &= ~(1 << pin);
368 void ppc40x_irq_init(CPUPPCState *env)
370 PowerPCCPU *cpu = ppc_env_get_cpu(env);
372 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
373 cpu, PPC40x_INPUT_NB);
376 /* PowerPC E500 internal IRQ controller */
377 static void ppce500_set_irq(void *opaque, int pin, int level)
379 PowerPCCPU *cpu = opaque;
380 CPUPPCState *env = &cpu->env;
383 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
385 cur_level = (env->irq_input_state >> pin) & 1;
386 /* Don't generate spurious events */
387 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
389 case PPCE500_INPUT_MCK:
391 LOG_IRQ("%s: reset the PowerPC system\n",
393 qemu_system_reset_request();
396 case PPCE500_INPUT_RESET_CORE:
398 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
399 ppc_set_irq(cpu, PPC_INTERRUPT_MCK, level);
402 case PPCE500_INPUT_CINT:
403 /* Level sensitive - active high */
404 LOG_IRQ("%s: set the critical IRQ state to %d\n",
406 ppc_set_irq(cpu, PPC_INTERRUPT_CEXT, level);
408 case PPCE500_INPUT_INT:
409 /* Level sensitive - active high */
410 LOG_IRQ("%s: set the core IRQ state to %d\n",
412 ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
414 case PPCE500_INPUT_DEBUG:
415 /* Level sensitive - active high */
416 LOG_IRQ("%s: set the debug pin state to %d\n",
418 ppc_set_irq(cpu, PPC_INTERRUPT_DEBUG, level);
421 /* Unknown pin - do nothing */
422 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
426 env->irq_input_state |= 1 << pin;
428 env->irq_input_state &= ~(1 << pin);
432 void ppce500_irq_init(CPUPPCState *env)
434 PowerPCCPU *cpu = ppc_env_get_cpu(env);
436 env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
437 cpu, PPCE500_INPUT_NB);
440 /* Enable or Disable the E500 EPR capability */
441 void ppce500_set_mpic_proxy(bool enabled)
445 for (env = first_cpu; env != NULL; env = env->next_cpu) {
446 PowerPCCPU *cpu = ppc_env_get_cpu(env);
447 CPUState *cs = CPU(cpu);
449 env->mpic_proxy = enabled;
451 kvmppc_set_mpic_proxy(POWERPC_CPU(cs), 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_get_clock_ns(vm_clock), 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_get_clock_ns(vm_clock), 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_get_clock_ns(vm_clock), tb_env->tb_offset);
514 tb &= 0xFFFFFFFF00000000ULL;
515 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
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_get_clock_ns(vm_clock), tb_env->tb_offset);
525 tb &= 0x00000000FFFFFFFFULL;
526 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
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_get_clock_ns(vm_clock), 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_get_clock_ns(vm_clock), 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_get_clock_ns(vm_clock), tb_env->atb_offset);
563 tb &= 0xFFFFFFFF00000000ULL;
564 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
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_get_clock_ns(vm_clock), tb_env->atb_offset);
574 tb &= 0x00000000FFFFFFFFULL;
575 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
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_get_clock_ns(vm_clock);
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_get_clock_ns(vm_clock);
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_get_clock_ns(vm_clock);
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_get_clock_ns(vm_clock) - 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_get_clock_ns(vm_clock);
705 next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq);
707 next += *nextp - now;
714 qemu_mod_timer(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_get_clock_ns(vm_clock);
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 = qemu_new_timer_ns(vm_clock, &cpu_ppc_decr_cb, cpu);
811 /* XXX: find a suitable condition to enable the hypervisor decrementer
813 tb_env->hdecr_timer = qemu_new_timer_ns(vm_clock, &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_get_clock_ns(vm_clock);
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 qemu_mod_timer(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 qemu_del_timer(tb_env->decr_timer);
925 LOG_TB("%s: start PIT %016" PRIx64 "\n",
926 __func__, ppc40x_timer->pit_reload);
927 now = qemu_get_clock_ns(vm_clock);
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 qemu_mod_timer(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_get_clock_ns(vm_clock);
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 qemu_mod_timer(ppc40x_timer->wdt_timer, next);
1003 ppc40x_timer->wdt_next = next;
1004 env->spr[SPR_40x_TSR] |= 1 << 31;
1007 qemu_mod_timer(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 = qemu_new_timer_ns(vm_clock, &cpu_4xx_pit_cb, env);
1080 ppc40x_timer->fit_timer =
1081 qemu_new_timer_ns(vm_clock, &cpu_4xx_fit_cb, env);
1082 ppc40x_timer->wdt_timer =
1083 qemu_new_timer_ns(vm_clock, &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);