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 */
134 #if defined(PPC_DEBUG_IRQ)
135 if (loglevel & CPU_LOG_INT) {
136 fprintf(logfile, "%s: reset the CPU\n", __func__);
139 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
144 qemu_system_reset_request();
148 case PPC6xx_INPUT_SRESET:
149 #if defined(PPC_DEBUG_IRQ)
150 if (loglevel & CPU_LOG_INT) {
151 fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
155 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
158 /* Unknown pin - do nothing */
159 #if defined(PPC_DEBUG_IRQ)
160 if (loglevel & CPU_LOG_INT) {
161 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
167 env->irq_input_state |= 1 << pin;
169 env->irq_input_state &= ~(1 << pin);
173 void ppc6xx_irq_init (CPUState *env)
175 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env,
179 #if defined(TARGET_PPC64)
180 /* PowerPC 970 internal IRQ controller */
181 static void ppc970_set_irq (void *opaque, int pin, int level)
183 CPUState *env = opaque;
186 #if defined(PPC_DEBUG_IRQ)
187 if (loglevel & CPU_LOG_INT) {
188 fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
192 cur_level = (env->irq_input_state >> pin) & 1;
193 /* Don't generate spurious events */
194 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
196 case PPC970_INPUT_INT:
197 /* Level sensitive - active high */
198 #if defined(PPC_DEBUG_IRQ)
199 if (loglevel & CPU_LOG_INT) {
200 fprintf(logfile, "%s: set the external IRQ state to %d\n",
204 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
206 case PPC970_INPUT_THINT:
207 /* Level sensitive - active high */
208 #if defined(PPC_DEBUG_IRQ)
209 if (loglevel & CPU_LOG_INT) {
210 fprintf(logfile, "%s: set the SMI IRQ state to %d\n", __func__,
214 ppc_set_irq(env, PPC_INTERRUPT_THERM, level);
216 case PPC970_INPUT_MCP:
217 /* Negative edge sensitive */
218 /* XXX: TODO: actual reaction may depends on HID0 status
219 * 603/604/740/750: check HID0[EMCP]
221 if (cur_level == 1 && level == 0) {
222 #if defined(PPC_DEBUG_IRQ)
223 if (loglevel & CPU_LOG_INT) {
224 fprintf(logfile, "%s: raise machine check state\n",
228 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
231 case PPC970_INPUT_CKSTP:
232 /* Level sensitive - active low */
233 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
235 #if defined(PPC_DEBUG_IRQ)
236 if (loglevel & CPU_LOG_INT) {
237 fprintf(logfile, "%s: stop the CPU\n", __func__);
242 #if defined(PPC_DEBUG_IRQ)
243 if (loglevel & CPU_LOG_INT) {
244 fprintf(logfile, "%s: restart the CPU\n", __func__);
250 case PPC970_INPUT_HRESET:
251 /* Level sensitive - active low */
254 #if defined(PPC_DEBUG_IRQ)
255 if (loglevel & CPU_LOG_INT) {
256 fprintf(logfile, "%s: reset the CPU\n", __func__);
263 case PPC970_INPUT_SRESET:
264 #if defined(PPC_DEBUG_IRQ)
265 if (loglevel & CPU_LOG_INT) {
266 fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
270 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
272 case PPC970_INPUT_TBEN:
273 #if defined(PPC_DEBUG_IRQ)
274 if (loglevel & CPU_LOG_INT) {
275 fprintf(logfile, "%s: set the TBEN state to %d\n", __func__,
282 /* Unknown pin - do nothing */
283 #if defined(PPC_DEBUG_IRQ)
284 if (loglevel & CPU_LOG_INT) {
285 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
291 env->irq_input_state |= 1 << pin;
293 env->irq_input_state &= ~(1 << pin);
297 void ppc970_irq_init (CPUState *env)
299 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, env,
302 #endif /* defined(TARGET_PPC64) */
304 /* PowerPC 40x internal IRQ controller */
305 static void ppc40x_set_irq (void *opaque, int pin, int level)
307 CPUState *env = opaque;
310 #if defined(PPC_DEBUG_IRQ)
311 if (loglevel & CPU_LOG_INT) {
312 fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
316 cur_level = (env->irq_input_state >> pin) & 1;
317 /* Don't generate spurious events */
318 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
320 case PPC40x_INPUT_RESET_SYS:
322 #if defined(PPC_DEBUG_IRQ)
323 if (loglevel & CPU_LOG_INT) {
324 fprintf(logfile, "%s: reset the PowerPC system\n",
328 ppc40x_system_reset(env);
331 case PPC40x_INPUT_RESET_CHIP:
333 #if defined(PPC_DEBUG_IRQ)
334 if (loglevel & CPU_LOG_INT) {
335 fprintf(logfile, "%s: reset the PowerPC chip\n", __func__);
338 ppc40x_chip_reset(env);
341 case PPC40x_INPUT_RESET_CORE:
342 /* XXX: TODO: update DBSR[MRR] */
344 #if defined(PPC_DEBUG_IRQ)
345 if (loglevel & CPU_LOG_INT) {
346 fprintf(logfile, "%s: reset the PowerPC core\n", __func__);
349 ppc40x_core_reset(env);
352 case PPC40x_INPUT_CINT:
353 /* Level sensitive - active high */
354 #if defined(PPC_DEBUG_IRQ)
355 if (loglevel & CPU_LOG_INT) {
356 fprintf(logfile, "%s: set the critical IRQ state to %d\n",
360 ppc_set_irq(env, PPC_INTERRUPT_CEXT, level);
362 case PPC40x_INPUT_INT:
363 /* Level sensitive - active high */
364 #if defined(PPC_DEBUG_IRQ)
365 if (loglevel & CPU_LOG_INT) {
366 fprintf(logfile, "%s: set the external IRQ state to %d\n",
370 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
372 case PPC40x_INPUT_HALT:
373 /* Level sensitive - active low */
375 #if defined(PPC_DEBUG_IRQ)
376 if (loglevel & CPU_LOG_INT) {
377 fprintf(logfile, "%s: stop the CPU\n", __func__);
382 #if defined(PPC_DEBUG_IRQ)
383 if (loglevel & CPU_LOG_INT) {
384 fprintf(logfile, "%s: restart the CPU\n", __func__);
390 case PPC40x_INPUT_DEBUG:
391 /* Level sensitive - active high */
392 #if defined(PPC_DEBUG_IRQ)
393 if (loglevel & CPU_LOG_INT) {
394 fprintf(logfile, "%s: set the debug pin state to %d\n",
398 ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level);
401 /* Unknown pin - do nothing */
402 #if defined(PPC_DEBUG_IRQ)
403 if (loglevel & CPU_LOG_INT) {
404 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
410 env->irq_input_state |= 1 << pin;
412 env->irq_input_state &= ~(1 << pin);
416 void ppc40x_irq_init (CPUState *env)
418 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
419 env, PPC40x_INPUT_NB);
422 /*****************************************************************************/
423 /* PowerPC time base and decrementer emulation */
425 /* Time base management */
426 int64_t tb_offset; /* Compensation */
427 int64_t atb_offset; /* Compensation */
428 uint32_t tb_freq; /* TB frequency */
429 /* Decrementer management */
430 uint64_t decr_next; /* Tick for next decr interrupt */
431 uint32_t decr_freq; /* decrementer frequency */
432 struct QEMUTimer *decr_timer;
433 /* Hypervisor decrementer management */
434 uint64_t hdecr_next; /* Tick for next hdecr interrupt */
435 struct QEMUTimer *hdecr_timer;
441 static always_inline uint64_t cpu_ppc_get_tb (ppc_tb_t *tb_env, uint64_t vmclk,
444 /* TB time in tb periods */
445 return muldiv64(vmclk, tb_env->tb_freq, ticks_per_sec) + tb_offset;
448 uint32_t cpu_ppc_load_tbl (CPUState *env)
450 ppc_tb_t *tb_env = env->tb_env;
453 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
454 #if defined(PPC_DEBUG_TB)
456 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
460 return tb & 0xFFFFFFFF;
463 static always_inline uint32_t _cpu_ppc_load_tbu (CPUState *env)
465 ppc_tb_t *tb_env = env->tb_env;
468 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
469 #if defined(PPC_DEBUG_TB)
471 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
478 uint32_t cpu_ppc_load_tbu (CPUState *env)
480 return _cpu_ppc_load_tbu(env);
483 static always_inline void cpu_ppc_store_tb (ppc_tb_t *tb_env, uint64_t vmclk,
487 *tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, ticks_per_sec);
490 fprintf(logfile, "%s: tb=0x%016lx offset=%08lx\n", __func__, value,
496 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
498 ppc_tb_t *tb_env = env->tb_env;
501 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
502 tb &= 0xFFFFFFFF00000000ULL;
503 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
504 &tb_env->tb_offset, tb | (uint64_t)value);
507 static always_inline void _cpu_ppc_store_tbu (CPUState *env, uint32_t value)
509 ppc_tb_t *tb_env = env->tb_env;
512 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
513 tb &= 0x00000000FFFFFFFFULL;
514 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
515 &tb_env->tb_offset, ((uint64_t)value << 32) | tb);
518 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
520 _cpu_ppc_store_tbu(env, value);
523 uint32_t cpu_ppc_load_atbl (CPUState *env)
525 ppc_tb_t *tb_env = env->tb_env;
528 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
529 #if defined(PPC_DEBUG_TB)
531 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
535 return tb & 0xFFFFFFFF;
538 uint32_t cpu_ppc_load_atbu (CPUState *env)
540 ppc_tb_t *tb_env = env->tb_env;
543 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
544 #if defined(PPC_DEBUG_TB)
546 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
553 void cpu_ppc_store_atbl (CPUState *env, uint32_t value)
555 ppc_tb_t *tb_env = env->tb_env;
558 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
559 tb &= 0xFFFFFFFF00000000ULL;
560 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
561 &tb_env->atb_offset, tb | (uint64_t)value);
564 void cpu_ppc_store_atbu (CPUState *env, uint32_t value)
566 ppc_tb_t *tb_env = env->tb_env;
569 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
570 tb &= 0x00000000FFFFFFFFULL;
571 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
572 &tb_env->atb_offset, ((uint64_t)value << 32) | tb);
575 static void cpu_ppc_tb_stop (CPUState *env)
577 ppc_tb_t *tb_env = env->tb_env;
578 uint64_t tb, atb, vmclk;
580 /* If the time base is already frozen, do nothing */
581 if (tb_env->tb_freq != 0) {
582 vmclk = qemu_get_clock(vm_clock);
583 /* Get the time base */
584 tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset);
585 /* Get the alternate time base */
586 atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset);
587 /* Store the time base value (ie compute the current offset) */
588 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
589 /* Store the alternate time base value (compute the current offset) */
590 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
591 /* Set the time base frequency to zero */
593 /* Now, the time bases are frozen to tb_offset / atb_offset value */
597 static void cpu_ppc_tb_start (CPUState *env)
599 ppc_tb_t *tb_env = env->tb_env;
600 uint64_t tb, atb, vmclk;
602 /* If the time base is not frozen, do nothing */
603 if (tb_env->tb_freq == 0) {
604 vmclk = qemu_get_clock(vm_clock);
605 /* Get the time base from tb_offset */
606 tb = tb_env->tb_offset;
607 /* Get the alternate time base from atb_offset */
608 atb = tb_env->atb_offset;
609 /* Restore the tb frequency from the decrementer frequency */
610 tb_env->tb_freq = tb_env->decr_freq;
611 /* Store the time base value */
612 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
613 /* Store the alternate time base value */
614 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
618 static always_inline uint32_t _cpu_ppc_load_decr (CPUState *env,
621 ppc_tb_t *tb_env = env->tb_env;
625 diff = tb_env->decr_next - qemu_get_clock(vm_clock);
627 decr = muldiv64(diff, tb_env->decr_freq, ticks_per_sec);
629 decr = -muldiv64(-diff, tb_env->decr_freq, ticks_per_sec);
630 #if defined(PPC_DEBUG_TB)
632 fprintf(logfile, "%s: 0x%08x\n", __func__, decr);
639 uint32_t cpu_ppc_load_decr (CPUState *env)
641 ppc_tb_t *tb_env = env->tb_env;
643 return _cpu_ppc_load_decr(env, &tb_env->decr_next);
646 uint32_t cpu_ppc_load_hdecr (CPUState *env)
648 ppc_tb_t *tb_env = env->tb_env;
650 return _cpu_ppc_load_decr(env, &tb_env->hdecr_next);
653 uint64_t cpu_ppc_load_purr (CPUState *env)
655 ppc_tb_t *tb_env = env->tb_env;
658 diff = qemu_get_clock(vm_clock) - tb_env->purr_start;
660 return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, ticks_per_sec);
663 /* When decrementer expires,
664 * all we need to do is generate or queue a CPU exception
666 static always_inline void cpu_ppc_decr_excp (CPUState *env)
671 fprintf(logfile, "raise decrementer exception\n");
674 ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
677 static always_inline void cpu_ppc_hdecr_excp (CPUState *env)
682 fprintf(logfile, "raise decrementer exception\n");
685 ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1);
688 static void __cpu_ppc_store_decr (CPUState *env, uint64_t *nextp,
689 struct QEMUTimer *timer,
690 void (*raise_excp)(CPUState *),
691 uint32_t decr, uint32_t value,
694 ppc_tb_t *tb_env = env->tb_env;
699 fprintf(logfile, "%s: 0x%08x => 0x%08x\n", __func__, decr, value);
702 now = qemu_get_clock(vm_clock);
703 next = now + muldiv64(value, ticks_per_sec, tb_env->decr_freq);
705 next += *nextp - now;
710 qemu_mod_timer(timer, next);
711 /* If we set a negative value and the decrementer was positive,
712 * raise an exception.
714 if ((value & 0x80000000) && !(decr & 0x80000000))
718 static always_inline void _cpu_ppc_store_decr (CPUState *env, uint32_t decr,
719 uint32_t value, int is_excp)
721 ppc_tb_t *tb_env = env->tb_env;
723 __cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer,
724 &cpu_ppc_decr_excp, decr, value, is_excp);
727 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
729 _cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
732 static void cpu_ppc_decr_cb (void *opaque)
734 _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1);
737 static always_inline void _cpu_ppc_store_hdecr (CPUState *env, uint32_t hdecr,
738 uint32_t value, int is_excp)
740 ppc_tb_t *tb_env = env->tb_env;
742 if (tb_env->hdecr_timer != NULL) {
743 __cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer,
744 &cpu_ppc_hdecr_excp, hdecr, value, is_excp);
748 void cpu_ppc_store_hdecr (CPUState *env, uint32_t value)
750 _cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0);
753 static void cpu_ppc_hdecr_cb (void *opaque)
755 _cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1);
758 void cpu_ppc_store_purr (CPUState *env, uint64_t value)
760 ppc_tb_t *tb_env = env->tb_env;
762 tb_env->purr_load = value;
763 tb_env->purr_start = qemu_get_clock(vm_clock);
766 static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
768 CPUState *env = opaque;
769 ppc_tb_t *tb_env = env->tb_env;
771 tb_env->tb_freq = freq;
772 tb_env->decr_freq = freq;
773 /* There is a bug in Linux 2.4 kernels:
774 * if a decrementer exception is pending when it enables msr_ee at startup,
775 * it's not ready to handle it...
777 _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
778 _cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
779 cpu_ppc_store_purr(env, 0x0000000000000000ULL);
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);
794 /* XXX: find a suitable condition to enable the hypervisor decrementer
796 tb_env->hdecr_timer = qemu_new_timer(vm_clock, &cpu_ppc_hdecr_cb, env);
798 tb_env->hdecr_timer = NULL;
800 cpu_ppc_set_tb_clk(env, freq);
802 return &cpu_ppc_set_tb_clk;
805 /* Specific helpers for POWER & PowerPC 601 RTC */
806 clk_setup_cb cpu_ppc601_rtc_init (CPUState *env)
808 return cpu_ppc_tb_init(env, 7812500);
811 void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
813 _cpu_ppc_store_tbu(env, value);
816 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
818 return _cpu_ppc_load_tbu(env);
821 void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
823 cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
826 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
828 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
831 /*****************************************************************************/
832 /* Embedded PowerPC timers */
835 typedef struct ppcemb_timer_t ppcemb_timer_t;
836 struct ppcemb_timer_t {
837 uint64_t pit_reload; /* PIT auto-reload value */
838 uint64_t fit_next; /* Tick for next FIT interrupt */
839 struct QEMUTimer *fit_timer;
840 uint64_t wdt_next; /* Tick for next WDT interrupt */
841 struct QEMUTimer *wdt_timer;
844 /* Fixed interval timer */
845 static void cpu_4xx_fit_cb (void *opaque)
849 ppcemb_timer_t *ppcemb_timer;
853 tb_env = env->tb_env;
854 ppcemb_timer = tb_env->opaque;
855 now = qemu_get_clock(vm_clock);
856 switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
870 /* Cannot occur, but makes gcc happy */
873 next = now + muldiv64(next, ticks_per_sec, tb_env->tb_freq);
876 qemu_mod_timer(ppcemb_timer->fit_timer, next);
877 env->spr[SPR_40x_TSR] |= 1 << 26;
878 if ((env->spr[SPR_40x_TCR] >> 23) & 0x1)
879 ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
882 fprintf(logfile, "%s: ir %d TCR " ADDRX " TSR " ADDRX "\n", __func__,
883 (int)((env->spr[SPR_40x_TCR] >> 23) & 0x1),
884 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
889 /* Programmable interval timer */
890 static void start_stop_pit (CPUState *env, ppc_tb_t *tb_env, int is_excp)
892 ppcemb_timer_t *ppcemb_timer;
895 ppcemb_timer = tb_env->opaque;
896 if (ppcemb_timer->pit_reload <= 1 ||
897 !((env->spr[SPR_40x_TCR] >> 26) & 0x1) ||
898 (is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) {
902 fprintf(logfile, "%s: stop PIT\n", __func__);
905 qemu_del_timer(tb_env->decr_timer);
909 fprintf(logfile, "%s: start PIT 0x" REGX "\n",
910 __func__, ppcemb_timer->pit_reload);
913 now = qemu_get_clock(vm_clock);
914 next = now + muldiv64(ppcemb_timer->pit_reload,
915 ticks_per_sec, tb_env->decr_freq);
917 next += tb_env->decr_next - now;
920 qemu_mod_timer(tb_env->decr_timer, next);
921 tb_env->decr_next = next;
925 static void cpu_4xx_pit_cb (void *opaque)
929 ppcemb_timer_t *ppcemb_timer;
932 tb_env = env->tb_env;
933 ppcemb_timer = tb_env->opaque;
934 env->spr[SPR_40x_TSR] |= 1 << 27;
935 if ((env->spr[SPR_40x_TCR] >> 26) & 0x1)
936 ppc_set_irq(env, PPC_INTERRUPT_PIT, 1);
937 start_stop_pit(env, tb_env, 1);
940 fprintf(logfile, "%s: ar %d ir %d TCR " ADDRX " TSR " ADDRX " "
941 "%016" PRIx64 "\n", __func__,
942 (int)((env->spr[SPR_40x_TCR] >> 22) & 0x1),
943 (int)((env->spr[SPR_40x_TCR] >> 26) & 0x1),
944 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR],
945 ppcemb_timer->pit_reload);
951 static void cpu_4xx_wdt_cb (void *opaque)
955 ppcemb_timer_t *ppcemb_timer;
959 tb_env = env->tb_env;
960 ppcemb_timer = tb_env->opaque;
961 now = qemu_get_clock(vm_clock);
962 switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
976 /* Cannot occur, but makes gcc happy */
979 next = now + muldiv64(next, ticks_per_sec, tb_env->decr_freq);
984 fprintf(logfile, "%s: TCR " ADDRX " TSR " ADDRX "\n", __func__,
985 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
988 switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
991 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
992 ppcemb_timer->wdt_next = next;
993 env->spr[SPR_40x_TSR] |= 1 << 31;
996 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
997 ppcemb_timer->wdt_next = next;
998 env->spr[SPR_40x_TSR] |= 1 << 30;
999 if ((env->spr[SPR_40x_TCR] >> 27) & 0x1)
1000 ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
1003 env->spr[SPR_40x_TSR] &= ~0x30000000;
1004 env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
1005 switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) {
1009 case 0x1: /* Core reset */
1010 ppc40x_core_reset(env);
1012 case 0x2: /* Chip reset */
1013 ppc40x_chip_reset(env);
1015 case 0x3: /* System reset */
1016 ppc40x_system_reset(env);
1022 void store_40x_pit (CPUState *env, target_ulong val)
1025 ppcemb_timer_t *ppcemb_timer;
1027 tb_env = env->tb_env;
1028 ppcemb_timer = tb_env->opaque;
1030 if (loglevel != 0) {
1031 fprintf(logfile, "%s %p %p\n", __func__, tb_env, ppcemb_timer);
1034 ppcemb_timer->pit_reload = val;
1035 start_stop_pit(env, tb_env, 0);
1038 target_ulong load_40x_pit (CPUState *env)
1040 return cpu_ppc_load_decr(env);
1043 void store_booke_tsr (CPUState *env, target_ulong val)
1046 if (loglevel != 0) {
1047 fprintf(logfile, "%s: val=" ADDRX "\n", __func__, val);
1050 env->spr[SPR_40x_TSR] &= ~(val & 0xFC000000);
1051 if (val & 0x80000000)
1052 ppc_set_irq(env, PPC_INTERRUPT_PIT, 0);
1055 void store_booke_tcr (CPUState *env, target_ulong val)
1059 tb_env = env->tb_env;
1061 if (loglevel != 0) {
1062 fprintf(logfile, "%s: val=" ADDRX "\n", __func__, val);
1065 env->spr[SPR_40x_TCR] = val & 0xFFC00000;
1066 start_stop_pit(env, tb_env, 1);
1067 cpu_4xx_wdt_cb(env);
1070 static void ppc_emb_set_tb_clk (void *opaque, uint32_t freq)
1072 CPUState *env = opaque;
1073 ppc_tb_t *tb_env = env->tb_env;
1076 if (loglevel != 0) {
1077 fprintf(logfile, "%s set new frequency to %u\n", __func__, freq);
1080 tb_env->tb_freq = freq;
1081 tb_env->decr_freq = freq;
1082 /* XXX: we should also update all timers */
1085 clk_setup_cb ppc_emb_timers_init (CPUState *env, uint32_t freq)
1088 ppcemb_timer_t *ppcemb_timer;
1090 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
1091 if (tb_env == NULL) {
1094 env->tb_env = tb_env;
1095 ppcemb_timer = qemu_mallocz(sizeof(ppcemb_timer_t));
1096 tb_env->tb_freq = freq;
1097 tb_env->decr_freq = freq;
1098 tb_env->opaque = ppcemb_timer;
1100 if (loglevel != 0) {
1101 fprintf(logfile, "%s %p %p %p\n", __func__, tb_env, ppcemb_timer,
1102 &ppc_emb_set_tb_clk);
1105 if (ppcemb_timer != NULL) {
1106 /* We use decr timer for PIT */
1107 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_4xx_pit_cb, env);
1108 ppcemb_timer->fit_timer =
1109 qemu_new_timer(vm_clock, &cpu_4xx_fit_cb, env);
1110 ppcemb_timer->wdt_timer =
1111 qemu_new_timer(vm_clock, &cpu_4xx_wdt_cb, env);
1114 return &ppc_emb_set_tb_clk;
1117 /*****************************************************************************/
1118 /* Embedded PowerPC Device Control Registers */
1119 typedef struct ppc_dcrn_t ppc_dcrn_t;
1121 dcr_read_cb dcr_read;
1122 dcr_write_cb dcr_write;
1126 /* XXX: on 460, DCR addresses are 32 bits wide,
1127 * using DCRIPR to get the 22 upper bits of the DCR address
1129 #define DCRN_NB 1024
1131 ppc_dcrn_t dcrn[DCRN_NB];
1132 int (*read_error)(int dcrn);
1133 int (*write_error)(int dcrn);
1136 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
1140 if (dcrn < 0 || dcrn >= DCRN_NB)
1142 dcr = &dcr_env->dcrn[dcrn];
1143 if (dcr->dcr_read == NULL)
1145 *valp = (*dcr->dcr_read)(dcr->opaque, dcrn);
1150 if (dcr_env->read_error != NULL)
1151 return (*dcr_env->read_error)(dcrn);
1156 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
1160 if (dcrn < 0 || dcrn >= DCRN_NB)
1162 dcr = &dcr_env->dcrn[dcrn];
1163 if (dcr->dcr_write == NULL)
1165 (*dcr->dcr_write)(dcr->opaque, dcrn, val);
1170 if (dcr_env->write_error != NULL)
1171 return (*dcr_env->write_error)(dcrn);
1176 int ppc_dcr_register (CPUState *env, int dcrn, void *opaque,
1177 dcr_read_cb dcr_read, dcr_write_cb dcr_write)
1182 dcr_env = env->dcr_env;
1183 if (dcr_env == NULL)
1185 if (dcrn < 0 || dcrn >= DCRN_NB)
1187 dcr = &dcr_env->dcrn[dcrn];
1188 if (dcr->opaque != NULL ||
1189 dcr->dcr_read != NULL ||
1190 dcr->dcr_write != NULL)
1192 dcr->opaque = opaque;
1193 dcr->dcr_read = dcr_read;
1194 dcr->dcr_write = dcr_write;
1199 int ppc_dcr_init (CPUState *env, int (*read_error)(int dcrn),
1200 int (*write_error)(int dcrn))
1204 dcr_env = qemu_mallocz(sizeof(ppc_dcr_t));
1205 if (dcr_env == NULL)
1207 dcr_env->read_error = read_error;
1208 dcr_env->write_error = write_error;
1209 env->dcr_env = dcr_env;
1215 /*****************************************************************************/
1216 /* Handle system reset (for now, just stop emulation) */
1217 void cpu_ppc_reset (CPUState *env)
1219 printf("Reset asked... Stop emulation\n");
1224 /*****************************************************************************/
1226 void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
1238 printf("Set loglevel to %04x\n", val);
1239 cpu_set_log(val | 0x100);
1244 /*****************************************************************************/
1246 static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr)
1248 return (*nvram->read_fn)(nvram->opaque, addr);;
1251 static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val)
1253 (*nvram->write_fn)(nvram->opaque, addr, val);
1256 void NVRAM_set_byte (nvram_t *nvram, uint32_t addr, uint8_t value)
1258 nvram_write(nvram, addr, value);
1261 uint8_t NVRAM_get_byte (nvram_t *nvram, uint32_t addr)
1263 return nvram_read(nvram, addr);
1266 void NVRAM_set_word (nvram_t *nvram, uint32_t addr, uint16_t value)
1268 nvram_write(nvram, addr, value >> 8);
1269 nvram_write(nvram, addr + 1, value & 0xFF);
1272 uint16_t NVRAM_get_word (nvram_t *nvram, uint32_t addr)
1276 tmp = nvram_read(nvram, addr) << 8;
1277 tmp |= nvram_read(nvram, addr + 1);
1282 void NVRAM_set_lword (nvram_t *nvram, uint32_t addr, uint32_t value)
1284 nvram_write(nvram, addr, value >> 24);
1285 nvram_write(nvram, addr + 1, (value >> 16) & 0xFF);
1286 nvram_write(nvram, addr + 2, (value >> 8) & 0xFF);
1287 nvram_write(nvram, addr + 3, value & 0xFF);
1290 uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr)
1294 tmp = nvram_read(nvram, addr) << 24;
1295 tmp |= nvram_read(nvram, addr + 1) << 16;
1296 tmp |= nvram_read(nvram, addr + 2) << 8;
1297 tmp |= nvram_read(nvram, addr + 3);
1302 void NVRAM_set_string (nvram_t *nvram, uint32_t addr,
1303 const unsigned char *str, uint32_t max)
1307 for (i = 0; i < max && str[i] != '\0'; i++) {
1308 nvram_write(nvram, addr + i, str[i]);
1310 nvram_write(nvram, addr + i, str[i]);
1311 nvram_write(nvram, addr + max - 1, '\0');
1314 int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max)
1318 memset(dst, 0, max);
1319 for (i = 0; i < max; i++) {
1320 dst[i] = NVRAM_get_byte(nvram, addr + i);
1328 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
1331 uint16_t pd, pd1, pd2;
1336 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
1337 tmp ^= (pd1 << 3) | (pd1 << 8);
1338 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
1343 uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count)
1346 uint16_t crc = 0xFFFF;
1351 for (i = 0; i != count; i++) {
1352 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
1355 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
1361 #define CMDLINE_ADDR 0x017ff000
1363 int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
1364 const unsigned char *arch,
1365 uint32_t RAM_size, int boot_device,
1366 uint32_t kernel_image, uint32_t kernel_size,
1367 const char *cmdline,
1368 uint32_t initrd_image, uint32_t initrd_size,
1369 uint32_t NVRAM_image,
1370 int width, int height, int depth)
1374 /* Set parameters for Open Hack'Ware BIOS */
1375 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
1376 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
1377 NVRAM_set_word(nvram, 0x14, NVRAM_size);
1378 NVRAM_set_string(nvram, 0x20, arch, 16);
1379 NVRAM_set_lword(nvram, 0x30, RAM_size);
1380 NVRAM_set_byte(nvram, 0x34, boot_device);
1381 NVRAM_set_lword(nvram, 0x38, kernel_image);
1382 NVRAM_set_lword(nvram, 0x3C, kernel_size);
1384 /* XXX: put the cmdline in NVRAM too ? */
1385 strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
1386 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
1387 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
1389 NVRAM_set_lword(nvram, 0x40, 0);
1390 NVRAM_set_lword(nvram, 0x44, 0);
1392 NVRAM_set_lword(nvram, 0x48, initrd_image);
1393 NVRAM_set_lword(nvram, 0x4C, initrd_size);
1394 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
1396 NVRAM_set_word(nvram, 0x54, width);
1397 NVRAM_set_word(nvram, 0x56, height);
1398 NVRAM_set_word(nvram, 0x58, depth);
1399 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
1400 NVRAM_set_word(nvram, 0xFC, crc);