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
26 //#define PPC_DEBUG_IRQ
27 //#define PPC_DEBUG_TB
32 static void cpu_ppc_tb_stop (CPUState *env);
33 static void cpu_ppc_tb_start (CPUState *env);
35 static void ppc_set_irq (CPUState *env, int n_IRQ, int level)
38 env->pending_interrupts |= 1 << n_IRQ;
39 cpu_interrupt(env, CPU_INTERRUPT_HARD);
41 env->pending_interrupts &= ~(1 << n_IRQ);
42 if (env->pending_interrupts == 0)
43 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
45 #if defined(PPC_DEBUG_IRQ)
46 if (loglevel & CPU_LOG_INT) {
47 fprintf(logfile, "%s: %p n_IRQ %d level %d => pending %08x req %08x\n",
48 __func__, env, n_IRQ, level,
49 env->pending_interrupts, env->interrupt_request);
54 /* PowerPC 6xx / 7xx internal IRQ controller */
55 static void ppc6xx_set_irq (void *opaque, int pin, int level)
57 CPUState *env = opaque;
60 #if defined(PPC_DEBUG_IRQ)
61 if (loglevel & CPU_LOG_INT) {
62 fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
66 cur_level = (env->irq_input_state >> pin) & 1;
67 /* Don't generate spurious events */
68 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
70 case PPC6xx_INPUT_TBEN:
71 /* Level sensitive - active high */
72 #if defined(PPC_DEBUG_IRQ)
73 if (loglevel & CPU_LOG_INT) {
74 fprintf(logfile, "%s: %s the time base\n",
75 __func__, level ? "start" : "stop");
79 cpu_ppc_tb_start(env);
83 case PPC6xx_INPUT_INT:
84 /* Level sensitive - active high */
85 #if defined(PPC_DEBUG_IRQ)
86 if (loglevel & CPU_LOG_INT) {
87 fprintf(logfile, "%s: set the external IRQ state to %d\n",
91 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
93 case PPC6xx_INPUT_SMI:
94 /* Level sensitive - active high */
95 #if defined(PPC_DEBUG_IRQ)
96 if (loglevel & CPU_LOG_INT) {
97 fprintf(logfile, "%s: set the SMI IRQ state to %d\n",
101 ppc_set_irq(env, PPC_INTERRUPT_SMI, level);
103 case PPC6xx_INPUT_MCP:
104 /* Negative edge sensitive */
105 /* XXX: TODO: actual reaction may depends on HID0 status
106 * 603/604/740/750: check HID0[EMCP]
108 if (cur_level == 1 && level == 0) {
109 #if defined(PPC_DEBUG_IRQ)
110 if (loglevel & CPU_LOG_INT) {
111 fprintf(logfile, "%s: raise machine check state\n",
115 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
118 case PPC6xx_INPUT_CKSTP_IN:
119 /* Level sensitive - active low */
120 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
121 /* XXX: Note that the only way to restart the CPU is to reset it */
123 #if defined(PPC_DEBUG_IRQ)
124 if (loglevel & CPU_LOG_INT) {
125 fprintf(logfile, "%s: stop the CPU\n", __func__);
131 case PPC6xx_INPUT_HRESET:
132 /* Level sensitive - active low */
135 #if defined(PPC_DEBUG_IRQ)
136 if (loglevel & CPU_LOG_INT) {
137 fprintf(logfile, "%s: reset the CPU\n", __func__);
144 case PPC6xx_INPUT_SRESET:
145 #if defined(PPC_DEBUG_IRQ)
146 if (loglevel & CPU_LOG_INT) {
147 fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
151 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
154 /* Unknown pin - do nothing */
155 #if defined(PPC_DEBUG_IRQ)
156 if (loglevel & CPU_LOG_INT) {
157 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
163 env->irq_input_state |= 1 << pin;
165 env->irq_input_state &= ~(1 << pin);
169 void ppc6xx_irq_init (CPUState *env)
171 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env, 6);
174 #if defined(TARGET_PPC64)
175 /* PowerPC 970 internal IRQ controller */
176 static void ppc970_set_irq (void *opaque, int pin, int level)
178 CPUState *env = opaque;
181 #if defined(PPC_DEBUG_IRQ)
182 if (loglevel & CPU_LOG_INT) {
183 fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
187 cur_level = (env->irq_input_state >> pin) & 1;
188 /* Don't generate spurious events */
189 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
191 case PPC970_INPUT_INT:
192 /* Level sensitive - active high */
193 #if defined(PPC_DEBUG_IRQ)
194 if (loglevel & CPU_LOG_INT) {
195 fprintf(logfile, "%s: set the external IRQ state to %d\n",
199 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
201 case PPC970_INPUT_THINT:
202 /* Level sensitive - active high */
203 #if defined(PPC_DEBUG_IRQ)
204 if (loglevel & CPU_LOG_INT) {
205 fprintf(logfile, "%s: set the SMI IRQ state to %d\n", __func__,
209 ppc_set_irq(env, PPC_INTERRUPT_THERM, level);
211 case PPC970_INPUT_MCP:
212 /* Negative edge sensitive */
213 /* XXX: TODO: actual reaction may depends on HID0 status
214 * 603/604/740/750: check HID0[EMCP]
216 if (cur_level == 1 && level == 0) {
217 #if defined(PPC_DEBUG_IRQ)
218 if (loglevel & CPU_LOG_INT) {
219 fprintf(logfile, "%s: raise machine check state\n",
223 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
226 case PPC970_INPUT_CKSTP:
227 /* Level sensitive - active low */
228 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
230 #if defined(PPC_DEBUG_IRQ)
231 if (loglevel & CPU_LOG_INT) {
232 fprintf(logfile, "%s: stop the CPU\n", __func__);
237 #if defined(PPC_DEBUG_IRQ)
238 if (loglevel & CPU_LOG_INT) {
239 fprintf(logfile, "%s: restart the CPU\n", __func__);
245 case PPC970_INPUT_HRESET:
246 /* Level sensitive - active low */
249 #if defined(PPC_DEBUG_IRQ)
250 if (loglevel & CPU_LOG_INT) {
251 fprintf(logfile, "%s: reset the CPU\n", __func__);
258 case PPC970_INPUT_SRESET:
259 #if defined(PPC_DEBUG_IRQ)
260 if (loglevel & CPU_LOG_INT) {
261 fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
265 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
267 case PPC970_INPUT_TBEN:
268 #if defined(PPC_DEBUG_IRQ)
269 if (loglevel & CPU_LOG_INT) {
270 fprintf(logfile, "%s: set the TBEN state to %d\n", __func__,
277 /* Unknown pin - do nothing */
278 #if defined(PPC_DEBUG_IRQ)
279 if (loglevel & CPU_LOG_INT) {
280 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
286 env->irq_input_state |= 1 << pin;
288 env->irq_input_state &= ~(1 << pin);
292 void ppc970_irq_init (CPUState *env)
294 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, env, 7);
296 #endif /* defined(TARGET_PPC64) */
298 /* PowerPC 40x internal IRQ controller */
299 static void ppc40x_set_irq (void *opaque, int pin, int level)
301 CPUState *env = opaque;
304 #if defined(PPC_DEBUG_IRQ)
305 if (loglevel & CPU_LOG_INT) {
306 fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
310 cur_level = (env->irq_input_state >> pin) & 1;
311 /* Don't generate spurious events */
312 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
314 case PPC40x_INPUT_RESET_SYS:
316 #if defined(PPC_DEBUG_IRQ)
317 if (loglevel & CPU_LOG_INT) {
318 fprintf(logfile, "%s: reset the PowerPC system\n",
322 ppc40x_system_reset(env);
325 case PPC40x_INPUT_RESET_CHIP:
327 #if defined(PPC_DEBUG_IRQ)
328 if (loglevel & CPU_LOG_INT) {
329 fprintf(logfile, "%s: reset the PowerPC chip\n", __func__);
332 ppc40x_chip_reset(env);
335 case PPC40x_INPUT_RESET_CORE:
336 /* XXX: TODO: update DBSR[MRR] */
338 #if defined(PPC_DEBUG_IRQ)
339 if (loglevel & CPU_LOG_INT) {
340 fprintf(logfile, "%s: reset the PowerPC core\n", __func__);
343 ppc40x_core_reset(env);
346 case PPC40x_INPUT_CINT:
347 /* Level sensitive - active high */
348 #if defined(PPC_DEBUG_IRQ)
349 if (loglevel & CPU_LOG_INT) {
350 fprintf(logfile, "%s: set the critical IRQ state to %d\n",
354 ppc_set_irq(env, PPC_INTERRUPT_CEXT, level);
356 case PPC40x_INPUT_INT:
357 /* Level sensitive - active high */
358 #if defined(PPC_DEBUG_IRQ)
359 if (loglevel & CPU_LOG_INT) {
360 fprintf(logfile, "%s: set the external IRQ state to %d\n",
364 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
366 case PPC40x_INPUT_HALT:
367 /* Level sensitive - active low */
369 #if defined(PPC_DEBUG_IRQ)
370 if (loglevel & CPU_LOG_INT) {
371 fprintf(logfile, "%s: stop the CPU\n", __func__);
376 #if defined(PPC_DEBUG_IRQ)
377 if (loglevel & CPU_LOG_INT) {
378 fprintf(logfile, "%s: restart the CPU\n", __func__);
384 case PPC40x_INPUT_DEBUG:
385 /* Level sensitive - active high */
386 #if defined(PPC_DEBUG_IRQ)
387 if (loglevel & CPU_LOG_INT) {
388 fprintf(logfile, "%s: set the debug pin state to %d\n",
392 ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level);
395 /* Unknown pin - do nothing */
396 #if defined(PPC_DEBUG_IRQ)
397 if (loglevel & CPU_LOG_INT) {
398 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
404 env->irq_input_state |= 1 << pin;
406 env->irq_input_state &= ~(1 << pin);
410 void ppc40x_irq_init (CPUState *env)
412 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
413 env, PPC40x_INPUT_NB);
416 /*****************************************************************************/
417 /* PowerPC time base and decrementer emulation */
419 /* Time base management */
420 int64_t tb_offset; /* Compensation */
421 int64_t atb_offset; /* Compensation */
422 uint32_t tb_freq; /* TB frequency */
423 /* Decrementer management */
424 uint64_t decr_next; /* Tick for next decr interrupt */
425 uint32_t decr_freq; /* decrementer frequency */
426 struct QEMUTimer *decr_timer;
427 #if defined(TARGET_PPC64H)
428 /* Hypervisor decrementer management */
429 uint64_t hdecr_next; /* Tick for next hdecr interrupt */
430 struct QEMUTimer *hdecr_timer;
437 static always_inline uint64_t cpu_ppc_get_tb (ppc_tb_t *tb_env, uint64_t vmclk,
440 /* TB time in tb periods */
441 return muldiv64(vmclk, tb_env->tb_freq, ticks_per_sec) + tb_offset;
444 uint32_t cpu_ppc_load_tbl (CPUState *env)
446 ppc_tb_t *tb_env = env->tb_env;
449 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
450 #if defined(PPC_DEBUG_TB)
452 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
456 return tb & 0xFFFFFFFF;
459 static always_inline uint32_t _cpu_ppc_load_tbu (CPUState *env)
461 ppc_tb_t *tb_env = env->tb_env;
464 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
465 #if defined(PPC_DEBUG_TB)
467 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
474 uint32_t cpu_ppc_load_tbu (CPUState *env)
476 return _cpu_ppc_load_tbu(env);
479 static always_inline void cpu_ppc_store_tb (ppc_tb_t *tb_env, uint64_t vmclk,
483 *tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, ticks_per_sec);
486 fprintf(logfile, "%s: tb=0x%016lx offset=%08lx\n", __func__, value,
492 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
494 ppc_tb_t *tb_env = env->tb_env;
497 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
498 tb &= 0xFFFFFFFF00000000ULL;
499 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
500 &tb_env->tb_offset, tb | (uint64_t)value);
503 static always_inline void _cpu_ppc_store_tbu (CPUState *env, uint32_t value)
505 ppc_tb_t *tb_env = env->tb_env;
508 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
509 tb &= 0x00000000FFFFFFFFULL;
510 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
511 &tb_env->tb_offset, ((uint64_t)value << 32) | tb);
514 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
516 _cpu_ppc_store_tbu(env, value);
519 uint32_t cpu_ppc_load_atbl (CPUState *env)
521 ppc_tb_t *tb_env = env->tb_env;
524 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
525 #if defined(PPC_DEBUG_TB)
527 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
531 return tb & 0xFFFFFFFF;
534 uint32_t cpu_ppc_load_atbu (CPUState *env)
536 ppc_tb_t *tb_env = env->tb_env;
539 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
540 #if defined(PPC_DEBUG_TB)
542 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
549 void cpu_ppc_store_atbl (CPUState *env, uint32_t value)
551 ppc_tb_t *tb_env = env->tb_env;
554 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
555 tb &= 0xFFFFFFFF00000000ULL;
556 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
557 &tb_env->atb_offset, tb | (uint64_t)value);
560 void cpu_ppc_store_atbu (CPUState *env, uint32_t value)
562 ppc_tb_t *tb_env = env->tb_env;
565 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
566 tb &= 0x00000000FFFFFFFFULL;
567 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
568 &tb_env->atb_offset, ((uint64_t)value << 32) | tb);
571 static void cpu_ppc_tb_stop (CPUState *env)
573 ppc_tb_t *tb_env = env->tb_env;
574 uint64_t tb, atb, vmclk;
576 /* If the time base is already frozen, do nothing */
577 if (tb_env->tb_freq != 0) {
578 vmclk = qemu_get_clock(vm_clock);
579 /* Get the time base */
580 tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset);
581 /* Get the alternate time base */
582 atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset);
583 /* Store the time base value (ie compute the current offset) */
584 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
585 /* Store the alternate time base value (compute the current offset) */
586 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
587 /* Set the time base frequency to zero */
589 /* Now, the time bases are frozen to tb_offset / atb_offset value */
593 static void cpu_ppc_tb_start (CPUState *env)
595 ppc_tb_t *tb_env = env->tb_env;
596 uint64_t tb, atb, vmclk;
598 /* If the time base is not frozen, do nothing */
599 if (tb_env->tb_freq == 0) {
600 vmclk = qemu_get_clock(vm_clock);
601 /* Get the time base from tb_offset */
602 tb = tb_env->tb_offset;
603 /* Get the alternate time base from atb_offset */
604 atb = tb_env->atb_offset;
605 /* Restore the tb frequency from the decrementer frequency */
606 tb_env->tb_freq = tb_env->decr_freq;
607 /* Store the time base value */
608 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
609 /* Store the alternate time base value */
610 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
614 static always_inline uint32_t _cpu_ppc_load_decr (CPUState *env,
617 ppc_tb_t *tb_env = env->tb_env;
621 diff = tb_env->decr_next - qemu_get_clock(vm_clock);
623 decr = muldiv64(diff, tb_env->decr_freq, ticks_per_sec);
625 decr = -muldiv64(-diff, tb_env->decr_freq, ticks_per_sec);
626 #if defined(PPC_DEBUG_TB)
628 fprintf(logfile, "%s: 0x%08x\n", __func__, decr);
635 uint32_t cpu_ppc_load_decr (CPUState *env)
637 ppc_tb_t *tb_env = env->tb_env;
639 return _cpu_ppc_load_decr(env, &tb_env->decr_next);
642 #if defined(TARGET_PPC64H)
643 uint32_t cpu_ppc_load_hdecr (CPUState *env)
645 ppc_tb_t *tb_env = env->tb_env;
647 return _cpu_ppc_load_decr(env, &tb_env->hdecr_next);
650 uint64_t cpu_ppc_load_purr (CPUState *env)
652 ppc_tb_t *tb_env = env->tb_env;
655 diff = qemu_get_clock(vm_clock) - tb_env->purr_start;
657 return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, ticks_per_sec);
659 #endif /* defined(TARGET_PPC64H) */
661 /* When decrementer expires,
662 * all we need to do is generate or queue a CPU exception
664 static always_inline void cpu_ppc_decr_excp (CPUState *env)
669 fprintf(logfile, "raise decrementer exception\n");
672 ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
675 static always_inline void cpu_ppc_hdecr_excp (CPUState *env)
680 fprintf(logfile, "raise decrementer exception\n");
683 ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1);
686 static void __cpu_ppc_store_decr (CPUState *env, uint64_t *nextp,
687 struct QEMUTimer *timer,
688 void (*raise_excp)(CPUState *),
689 uint32_t decr, uint32_t value,
692 ppc_tb_t *tb_env = env->tb_env;
697 fprintf(logfile, "%s: 0x%08x => 0x%08x\n", __func__, decr, value);
700 now = qemu_get_clock(vm_clock);
701 next = now + muldiv64(value, ticks_per_sec, tb_env->decr_freq);
703 next += *nextp - now;
708 qemu_mod_timer(timer, next);
709 /* If we set a negative value and the decrementer was positive,
710 * raise an exception.
712 if ((value & 0x80000000) && !(decr & 0x80000000))
716 static always_inline void _cpu_ppc_store_decr (CPUState *env, uint32_t decr,
717 uint32_t value, int is_excp)
719 ppc_tb_t *tb_env = env->tb_env;
721 __cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer,
722 &cpu_ppc_decr_excp, decr, value, is_excp);
725 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
727 _cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
730 static void cpu_ppc_decr_cb (void *opaque)
732 _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1);
735 #if defined(TARGET_PPC64H)
736 static always_inline void _cpu_ppc_store_hdecr (CPUState *env, uint32_t hdecr,
737 uint32_t value, int is_excp)
739 ppc_tb_t *tb_env = env->tb_env;
741 __cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer,
742 &cpu_ppc_hdecr_excp, hdecr, value, is_excp);
745 void cpu_ppc_store_hdecr (CPUState *env, uint32_t value)
747 _cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0);
750 static void cpu_ppc_hdecr_cb (void *opaque)
752 _cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1);
755 void cpu_ppc_store_purr (CPUState *env, uint64_t value)
757 ppc_tb_t *tb_env = env->tb_env;
759 tb_env->purr_load = value;
760 tb_env->purr_start = qemu_get_clock(vm_clock);
762 #endif /* defined(TARGET_PPC64H) */
764 static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
766 CPUState *env = opaque;
767 ppc_tb_t *tb_env = env->tb_env;
769 tb_env->tb_freq = freq;
770 tb_env->decr_freq = freq;
771 /* There is a bug in Linux 2.4 kernels:
772 * if a decrementer exception is pending when it enables msr_ee at startup,
773 * it's not ready to handle it...
775 _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
776 #if defined(TARGET_PPC64H)
777 _cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
778 cpu_ppc_store_purr(env, 0x0000000000000000ULL);
779 #endif /* defined(TARGET_PPC64H) */
782 /* Set up (once) timebase frequency (in Hz) */
783 clk_setup_cb cpu_ppc_tb_init (CPUState *env, uint32_t freq)
787 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
790 env->tb_env = tb_env;
791 /* Create new timer */
792 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env);
793 #if defined(TARGET_PPC64H)
794 tb_env->hdecr_timer = qemu_new_timer(vm_clock, &cpu_ppc_hdecr_cb, env);
795 #endif /* defined(TARGET_PPC64H) */
796 cpu_ppc_set_tb_clk(env, freq);
798 return &cpu_ppc_set_tb_clk;
801 /* Specific helpers for POWER & PowerPC 601 RTC */
802 clk_setup_cb cpu_ppc601_rtc_init (CPUState *env)
804 return cpu_ppc_tb_init(env, 7812500);
807 void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
809 _cpu_ppc_store_tbu(env, value);
812 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
814 return _cpu_ppc_load_tbu(env);
817 void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
819 cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
822 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
824 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
827 /*****************************************************************************/
828 /* Embedded PowerPC timers */
831 typedef struct ppcemb_timer_t ppcemb_timer_t;
832 struct ppcemb_timer_t {
833 uint64_t pit_reload; /* PIT auto-reload value */
834 uint64_t fit_next; /* Tick for next FIT interrupt */
835 struct QEMUTimer *fit_timer;
836 uint64_t wdt_next; /* Tick for next WDT interrupt */
837 struct QEMUTimer *wdt_timer;
840 /* Fixed interval timer */
841 static void cpu_4xx_fit_cb (void *opaque)
845 ppcemb_timer_t *ppcemb_timer;
849 tb_env = env->tb_env;
850 ppcemb_timer = tb_env->opaque;
851 now = qemu_get_clock(vm_clock);
852 switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
866 /* Cannot occur, but makes gcc happy */
869 next = now + muldiv64(next, ticks_per_sec, tb_env->tb_freq);
872 qemu_mod_timer(ppcemb_timer->fit_timer, next);
873 env->spr[SPR_40x_TSR] |= 1 << 26;
874 if ((env->spr[SPR_40x_TCR] >> 23) & 0x1)
875 ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
878 fprintf(logfile, "%s: ir %d TCR " ADDRX " TSR " ADDRX "\n", __func__,
879 (int)((env->spr[SPR_40x_TCR] >> 23) & 0x1),
880 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
885 /* Programmable interval timer */
886 static void start_stop_pit (CPUState *env, ppc_tb_t *tb_env, int is_excp)
888 ppcemb_timer_t *ppcemb_timer;
891 ppcemb_timer = tb_env->opaque;
892 if (ppcemb_timer->pit_reload <= 1 ||
893 !((env->spr[SPR_40x_TCR] >> 26) & 0x1) ||
894 (is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) {
898 fprintf(logfile, "%s: stop PIT\n", __func__);
901 qemu_del_timer(tb_env->decr_timer);
905 fprintf(logfile, "%s: start PIT 0x" REGX "\n",
906 __func__, ppcemb_timer->pit_reload);
909 now = qemu_get_clock(vm_clock);
910 next = now + muldiv64(ppcemb_timer->pit_reload,
911 ticks_per_sec, tb_env->decr_freq);
913 next += tb_env->decr_next - now;
916 qemu_mod_timer(tb_env->decr_timer, next);
917 tb_env->decr_next = next;
921 static void cpu_4xx_pit_cb (void *opaque)
925 ppcemb_timer_t *ppcemb_timer;
928 tb_env = env->tb_env;
929 ppcemb_timer = tb_env->opaque;
930 env->spr[SPR_40x_TSR] |= 1 << 27;
931 if ((env->spr[SPR_40x_TCR] >> 26) & 0x1)
932 ppc_set_irq(env, PPC_INTERRUPT_PIT, 1);
933 start_stop_pit(env, tb_env, 1);
936 fprintf(logfile, "%s: ar %d ir %d TCR " ADDRX " TSR " ADDRX " "
937 "%016" PRIx64 "\n", __func__,
938 (int)((env->spr[SPR_40x_TCR] >> 22) & 0x1),
939 (int)((env->spr[SPR_40x_TCR] >> 26) & 0x1),
940 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR],
941 ppcemb_timer->pit_reload);
947 static void cpu_4xx_wdt_cb (void *opaque)
951 ppcemb_timer_t *ppcemb_timer;
955 tb_env = env->tb_env;
956 ppcemb_timer = tb_env->opaque;
957 now = qemu_get_clock(vm_clock);
958 switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
972 /* Cannot occur, but makes gcc happy */
975 next = now + muldiv64(next, ticks_per_sec, tb_env->decr_freq);
980 fprintf(logfile, "%s: TCR " ADDRX " TSR " ADDRX "\n", __func__,
981 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
984 switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
987 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
988 ppcemb_timer->wdt_next = next;
989 env->spr[SPR_40x_TSR] |= 1 << 31;
992 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
993 ppcemb_timer->wdt_next = next;
994 env->spr[SPR_40x_TSR] |= 1 << 30;
995 if ((env->spr[SPR_40x_TCR] >> 27) & 0x1)
996 ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
999 env->spr[SPR_40x_TSR] &= ~0x30000000;
1000 env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
1001 switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) {
1005 case 0x1: /* Core reset */
1006 ppc40x_core_reset(env);
1008 case 0x2: /* Chip reset */
1009 ppc40x_chip_reset(env);
1011 case 0x3: /* System reset */
1012 ppc40x_system_reset(env);
1018 void store_40x_pit (CPUState *env, target_ulong val)
1021 ppcemb_timer_t *ppcemb_timer;
1023 tb_env = env->tb_env;
1024 ppcemb_timer = tb_env->opaque;
1026 if (loglevel != 0) {
1027 fprintf(logfile, "%s %p %p\n", __func__, tb_env, ppcemb_timer);
1030 ppcemb_timer->pit_reload = val;
1031 start_stop_pit(env, tb_env, 0);
1034 target_ulong load_40x_pit (CPUState *env)
1036 return cpu_ppc_load_decr(env);
1039 void store_booke_tsr (CPUState *env, target_ulong val)
1042 if (loglevel != 0) {
1043 fprintf(logfile, "%s: val=" ADDRX "\n", __func__, val);
1046 env->spr[SPR_40x_TSR] &= ~(val & 0xFC000000);
1047 if (val & 0x80000000)
1048 ppc_set_irq(env, PPC_INTERRUPT_PIT, 0);
1051 void store_booke_tcr (CPUState *env, target_ulong val)
1055 tb_env = env->tb_env;
1057 if (loglevel != 0) {
1058 fprintf(logfile, "%s: val=" ADDRX "\n", __func__, val);
1061 env->spr[SPR_40x_TCR] = val & 0xFFC00000;
1062 start_stop_pit(env, tb_env, 1);
1063 cpu_4xx_wdt_cb(env);
1066 static void ppc_emb_set_tb_clk (void *opaque, uint32_t freq)
1068 CPUState *env = opaque;
1069 ppc_tb_t *tb_env = env->tb_env;
1072 if (loglevel != 0) {
1073 fprintf(logfile, "%s set new frequency to %u\n", __func__, freq);
1076 tb_env->tb_freq = freq;
1077 tb_env->decr_freq = freq;
1078 /* XXX: we should also update all timers */
1081 clk_setup_cb ppc_emb_timers_init (CPUState *env, uint32_t freq)
1084 ppcemb_timer_t *ppcemb_timer;
1086 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
1087 if (tb_env == NULL) {
1090 env->tb_env = tb_env;
1091 ppcemb_timer = qemu_mallocz(sizeof(ppcemb_timer_t));
1092 tb_env->tb_freq = freq;
1093 tb_env->decr_freq = freq;
1094 tb_env->opaque = ppcemb_timer;
1096 if (loglevel != 0) {
1097 fprintf(logfile, "%s %p %p %p\n", __func__, tb_env, ppcemb_timer,
1098 &ppc_emb_set_tb_clk);
1101 if (ppcemb_timer != NULL) {
1102 /* We use decr timer for PIT */
1103 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_4xx_pit_cb, env);
1104 ppcemb_timer->fit_timer =
1105 qemu_new_timer(vm_clock, &cpu_4xx_fit_cb, env);
1106 ppcemb_timer->wdt_timer =
1107 qemu_new_timer(vm_clock, &cpu_4xx_wdt_cb, env);
1110 return &ppc_emb_set_tb_clk;
1113 /*****************************************************************************/
1114 /* Embedded PowerPC Device Control Registers */
1115 typedef struct ppc_dcrn_t ppc_dcrn_t;
1117 dcr_read_cb dcr_read;
1118 dcr_write_cb dcr_write;
1122 /* XXX: on 460, DCR addresses are 32 bits wide,
1123 * using DCRIPR to get the 22 upper bits of the DCR address
1125 #define DCRN_NB 1024
1127 ppc_dcrn_t dcrn[DCRN_NB];
1128 int (*read_error)(int dcrn);
1129 int (*write_error)(int dcrn);
1132 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
1136 if (dcrn < 0 || dcrn >= DCRN_NB)
1138 dcr = &dcr_env->dcrn[dcrn];
1139 if (dcr->dcr_read == NULL)
1141 *valp = (*dcr->dcr_read)(dcr->opaque, dcrn);
1146 if (dcr_env->read_error != NULL)
1147 return (*dcr_env->read_error)(dcrn);
1152 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
1156 if (dcrn < 0 || dcrn >= DCRN_NB)
1158 dcr = &dcr_env->dcrn[dcrn];
1159 if (dcr->dcr_write == NULL)
1161 (*dcr->dcr_write)(dcr->opaque, dcrn, val);
1166 if (dcr_env->write_error != NULL)
1167 return (*dcr_env->write_error)(dcrn);
1172 int ppc_dcr_register (CPUState *env, int dcrn, void *opaque,
1173 dcr_read_cb dcr_read, dcr_write_cb dcr_write)
1178 dcr_env = env->dcr_env;
1179 if (dcr_env == NULL)
1181 if (dcrn < 0 || dcrn >= DCRN_NB)
1183 dcr = &dcr_env->dcrn[dcrn];
1184 if (dcr->opaque != NULL ||
1185 dcr->dcr_read != NULL ||
1186 dcr->dcr_write != NULL)
1188 dcr->opaque = opaque;
1189 dcr->dcr_read = dcr_read;
1190 dcr->dcr_write = dcr_write;
1195 int ppc_dcr_init (CPUState *env, int (*read_error)(int dcrn),
1196 int (*write_error)(int dcrn))
1200 dcr_env = qemu_mallocz(sizeof(ppc_dcr_t));
1201 if (dcr_env == NULL)
1203 dcr_env->read_error = read_error;
1204 dcr_env->write_error = write_error;
1205 env->dcr_env = dcr_env;
1211 /*****************************************************************************/
1212 /* Handle system reset (for now, just stop emulation) */
1213 void cpu_ppc_reset (CPUState *env)
1215 printf("Reset asked... Stop emulation\n");
1220 /*****************************************************************************/
1222 void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
1234 printf("Set loglevel to %04x\n", val);
1235 cpu_set_log(val | 0x100);
1240 /*****************************************************************************/
1242 static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr)
1244 return (*nvram->read_fn)(nvram->opaque, addr);;
1247 static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val)
1249 (*nvram->write_fn)(nvram->opaque, addr, val);
1252 void NVRAM_set_byte (nvram_t *nvram, uint32_t addr, uint8_t value)
1254 nvram_write(nvram, addr, value);
1257 uint8_t NVRAM_get_byte (nvram_t *nvram, uint32_t addr)
1259 return nvram_read(nvram, addr);
1262 void NVRAM_set_word (nvram_t *nvram, uint32_t addr, uint16_t value)
1264 nvram_write(nvram, addr, value >> 8);
1265 nvram_write(nvram, addr + 1, value & 0xFF);
1268 uint16_t NVRAM_get_word (nvram_t *nvram, uint32_t addr)
1272 tmp = nvram_read(nvram, addr) << 8;
1273 tmp |= nvram_read(nvram, addr + 1);
1278 void NVRAM_set_lword (nvram_t *nvram, uint32_t addr, uint32_t value)
1280 nvram_write(nvram, addr, value >> 24);
1281 nvram_write(nvram, addr + 1, (value >> 16) & 0xFF);
1282 nvram_write(nvram, addr + 2, (value >> 8) & 0xFF);
1283 nvram_write(nvram, addr + 3, value & 0xFF);
1286 uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr)
1290 tmp = nvram_read(nvram, addr) << 24;
1291 tmp |= nvram_read(nvram, addr + 1) << 16;
1292 tmp |= nvram_read(nvram, addr + 2) << 8;
1293 tmp |= nvram_read(nvram, addr + 3);
1298 void NVRAM_set_string (nvram_t *nvram, uint32_t addr,
1299 const unsigned char *str, uint32_t max)
1303 for (i = 0; i < max && str[i] != '\0'; i++) {
1304 nvram_write(nvram, addr + i, str[i]);
1306 nvram_write(nvram, addr + i, str[i]);
1307 nvram_write(nvram, addr + max - 1, '\0');
1310 int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max)
1314 memset(dst, 0, max);
1315 for (i = 0; i < max; i++) {
1316 dst[i] = NVRAM_get_byte(nvram, addr + i);
1324 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
1327 uint16_t pd, pd1, pd2;
1332 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
1333 tmp ^= (pd1 << 3) | (pd1 << 8);
1334 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
1339 uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count)
1342 uint16_t crc = 0xFFFF;
1347 for (i = 0; i != count; i++) {
1348 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
1351 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
1357 #define CMDLINE_ADDR 0x017ff000
1359 int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
1360 const unsigned char *arch,
1361 uint32_t RAM_size, int boot_device,
1362 uint32_t kernel_image, uint32_t kernel_size,
1363 const char *cmdline,
1364 uint32_t initrd_image, uint32_t initrd_size,
1365 uint32_t NVRAM_image,
1366 int width, int height, int depth)
1370 /* Set parameters for Open Hack'Ware BIOS */
1371 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
1372 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
1373 NVRAM_set_word(nvram, 0x14, NVRAM_size);
1374 NVRAM_set_string(nvram, 0x20, arch, 16);
1375 NVRAM_set_lword(nvram, 0x30, RAM_size);
1376 NVRAM_set_byte(nvram, 0x34, boot_device);
1377 NVRAM_set_lword(nvram, 0x38, kernel_image);
1378 NVRAM_set_lword(nvram, 0x3C, kernel_size);
1380 /* XXX: put the cmdline in NVRAM too ? */
1381 strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
1382 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
1383 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
1385 NVRAM_set_lword(nvram, 0x40, 0);
1386 NVRAM_set_lword(nvram, 0x44, 0);
1388 NVRAM_set_lword(nvram, 0x48, initrd_image);
1389 NVRAM_set_lword(nvram, 0x4C, initrd_size);
1390 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
1392 NVRAM_set_word(nvram, 0x54, width);
1393 NVRAM_set_word(nvram, 0x56, height);
1394 NVRAM_set_word(nvram, 0x58, depth);
1395 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
1396 NVRAM_set_word(nvram, 0xFC, crc);