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
27 //#define PPC_DEBUG_IRQ
28 //#define PPC_DEBUG_TB
33 static void ppc_set_irq (CPUState *env, int n_IRQ, int level)
36 env->pending_interrupts |= 1 << n_IRQ;
37 cpu_interrupt(env, CPU_INTERRUPT_HARD);
39 env->pending_interrupts &= ~(1 << n_IRQ);
40 if (env->pending_interrupts == 0)
41 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
43 #if defined(PPC_DEBUG_IRQ)
44 if (loglevel & CPU_LOG_INT) {
45 fprintf(logfile, "%s: %p n_IRQ %d level %d => pending %08x req %08x\n",
46 __func__, env, n_IRQ, level,
47 env->pending_interrupts, env->interrupt_request);
52 /* PowerPC 6xx / 7xx internal IRQ controller */
53 static void ppc6xx_set_irq (void *opaque, int pin, int level)
55 CPUState *env = opaque;
58 #if defined(PPC_DEBUG_IRQ)
59 if (loglevel & CPU_LOG_INT) {
60 fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
64 cur_level = (env->irq_input_state >> pin) & 1;
65 /* Don't generate spurious events */
66 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
68 case PPC6xx_INPUT_INT:
69 /* Level sensitive - active high */
70 #if defined(PPC_DEBUG_IRQ)
71 if (loglevel & CPU_LOG_INT) {
72 fprintf(logfile, "%s: set the external IRQ state to %d\n",
76 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
78 case PPC6xx_INPUT_SMI:
79 /* Level sensitive - active high */
80 #if defined(PPC_DEBUG_IRQ)
81 if (loglevel & CPU_LOG_INT) {
82 fprintf(logfile, "%s: set the SMI IRQ state to %d\n",
86 ppc_set_irq(env, PPC_INTERRUPT_SMI, level);
88 case PPC6xx_INPUT_MCP:
89 /* Negative edge sensitive */
90 /* XXX: TODO: actual reaction may depends on HID0 status
91 * 603/604/740/750: check HID0[EMCP]
93 if (cur_level == 1 && level == 0) {
94 #if defined(PPC_DEBUG_IRQ)
95 if (loglevel & CPU_LOG_INT) {
96 fprintf(logfile, "%s: raise machine check state\n",
100 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
103 case PPC6xx_INPUT_CKSTP_IN:
104 /* Level sensitive - active low */
105 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
107 #if defined(PPC_DEBUG_IRQ)
108 if (loglevel & CPU_LOG_INT) {
109 fprintf(logfile, "%s: stop the CPU\n", __func__);
114 #if defined(PPC_DEBUG_IRQ)
115 if (loglevel & CPU_LOG_INT) {
116 fprintf(logfile, "%s: restart the CPU\n", __func__);
122 case PPC6xx_INPUT_HRESET:
123 /* Level sensitive - active low */
126 #if defined(PPC_DEBUG_IRQ)
127 if (loglevel & CPU_LOG_INT) {
128 fprintf(logfile, "%s: reset the CPU\n", __func__);
135 case PPC6xx_INPUT_SRESET:
136 #if defined(PPC_DEBUG_IRQ)
137 if (loglevel & CPU_LOG_INT) {
138 fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
142 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
145 /* Unknown pin - do nothing */
146 #if defined(PPC_DEBUG_IRQ)
147 if (loglevel & CPU_LOG_INT) {
148 fprintf(logfile, "%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 (CPUState *env)
162 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env, 6);
165 #if defined(TARGET_PPC64)
166 /* PowerPC 970 internal IRQ controller */
167 static void ppc970_set_irq (void *opaque, int pin, int level)
169 CPUState *env = opaque;
172 #if defined(PPC_DEBUG_IRQ)
173 if (loglevel & CPU_LOG_INT) {
174 fprintf(logfile, "%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)) {
182 case PPC970_INPUT_INT:
183 /* Level sensitive - active high */
184 #if defined(PPC_DEBUG_IRQ)
185 if (loglevel & CPU_LOG_INT) {
186 fprintf(logfile, "%s: set the external IRQ state to %d\n",
190 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
192 case PPC970_INPUT_THINT:
193 /* Level sensitive - active high */
194 #if defined(PPC_DEBUG_IRQ)
195 if (loglevel & CPU_LOG_INT) {
196 fprintf(logfile, "%s: set the SMI IRQ state to %d\n", __func__,
200 ppc_set_irq(env, PPC_INTERRUPT_THERM, level);
202 case PPC970_INPUT_MCP:
203 /* Negative edge sensitive */
204 /* XXX: TODO: actual reaction may depends on HID0 status
205 * 603/604/740/750: check HID0[EMCP]
207 if (cur_level == 1 && level == 0) {
208 #if defined(PPC_DEBUG_IRQ)
209 if (loglevel & CPU_LOG_INT) {
210 fprintf(logfile, "%s: raise machine check state\n",
214 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
217 case PPC970_INPUT_CKSTP:
218 /* Level sensitive - active low */
219 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
221 #if defined(PPC_DEBUG_IRQ)
222 if (loglevel & CPU_LOG_INT) {
223 fprintf(logfile, "%s: stop the CPU\n", __func__);
228 #if defined(PPC_DEBUG_IRQ)
229 if (loglevel & CPU_LOG_INT) {
230 fprintf(logfile, "%s: restart the CPU\n", __func__);
236 case PPC970_INPUT_HRESET:
237 /* Level sensitive - active low */
240 #if defined(PPC_DEBUG_IRQ)
241 if (loglevel & CPU_LOG_INT) {
242 fprintf(logfile, "%s: reset the CPU\n", __func__);
249 case PPC970_INPUT_SRESET:
250 #if defined(PPC_DEBUG_IRQ)
251 if (loglevel & CPU_LOG_INT) {
252 fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
256 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
258 case PPC970_INPUT_TBEN:
259 #if defined(PPC_DEBUG_IRQ)
260 if (loglevel & CPU_LOG_INT) {
261 fprintf(logfile, "%s: set the TBEN state to %d\n", __func__,
268 /* Unknown pin - do nothing */
269 #if defined(PPC_DEBUG_IRQ)
270 if (loglevel & CPU_LOG_INT) {
271 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
277 env->irq_input_state |= 1 << pin;
279 env->irq_input_state &= ~(1 << pin);
283 void ppc970_irq_init (CPUState *env)
285 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, env, 7);
287 #endif /* defined(TARGET_PPC64) */
289 /* PowerPC 40x internal IRQ controller */
290 static void ppc40x_set_irq (void *opaque, int pin, int level)
292 CPUState *env = opaque;
295 #if defined(PPC_DEBUG_IRQ)
296 if (loglevel & CPU_LOG_INT) {
297 fprintf(logfile, "%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)) {
305 case PPC40x_INPUT_RESET_SYS:
307 #if defined(PPC_DEBUG_IRQ)
308 if (loglevel & CPU_LOG_INT) {
309 fprintf(logfile, "%s: reset the PowerPC system\n",
313 ppc40x_system_reset(env);
316 case PPC40x_INPUT_RESET_CHIP:
318 #if defined(PPC_DEBUG_IRQ)
319 if (loglevel & CPU_LOG_INT) {
320 fprintf(logfile, "%s: reset the PowerPC chip\n", __func__);
323 ppc40x_chip_reset(env);
326 case PPC40x_INPUT_RESET_CORE:
327 /* XXX: TODO: update DBSR[MRR] */
329 #if defined(PPC_DEBUG_IRQ)
330 if (loglevel & CPU_LOG_INT) {
331 fprintf(logfile, "%s: reset the PowerPC core\n", __func__);
334 ppc40x_core_reset(env);
337 case PPC40x_INPUT_CINT:
338 /* Level sensitive - active high */
339 #if defined(PPC_DEBUG_IRQ)
340 if (loglevel & CPU_LOG_INT) {
341 fprintf(logfile, "%s: set the critical IRQ state to %d\n",
345 ppc_set_irq(env, PPC_INTERRUPT_CEXT, level);
347 case PPC40x_INPUT_INT:
348 /* Level sensitive - active high */
349 #if defined(PPC_DEBUG_IRQ)
350 if (loglevel & CPU_LOG_INT) {
351 fprintf(logfile, "%s: set the external IRQ state to %d\n",
355 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
357 case PPC40x_INPUT_HALT:
358 /* Level sensitive - active low */
360 #if defined(PPC_DEBUG_IRQ)
361 if (loglevel & CPU_LOG_INT) {
362 fprintf(logfile, "%s: stop the CPU\n", __func__);
367 #if defined(PPC_DEBUG_IRQ)
368 if (loglevel & CPU_LOG_INT) {
369 fprintf(logfile, "%s: restart the CPU\n", __func__);
375 case PPC40x_INPUT_DEBUG:
376 /* Level sensitive - active high */
377 #if defined(PPC_DEBUG_IRQ)
378 if (loglevel & CPU_LOG_INT) {
379 fprintf(logfile, "%s: set the debug pin state to %d\n",
383 ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level);
386 /* Unknown pin - do nothing */
387 #if defined(PPC_DEBUG_IRQ)
388 if (loglevel & CPU_LOG_INT) {
389 fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
395 env->irq_input_state |= 1 << pin;
397 env->irq_input_state &= ~(1 << pin);
401 void ppc40x_irq_init (CPUState *env)
403 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
404 env, PPC40x_INPUT_NB);
407 /*****************************************************************************/
408 /* PowerPC time base and decrementer emulation */
410 /* Time base management */
411 int64_t tb_offset; /* Compensation */
412 int64_t atb_offset; /* Compensation */
413 uint32_t tb_freq; /* TB frequency */
414 /* Decrementer management */
415 uint64_t decr_next; /* Tick for next decr interrupt */
416 struct QEMUTimer *decr_timer;
417 #if defined(TARGET_PPC64H)
418 /* Hypervisor decrementer management */
419 uint64_t hdecr_next; /* Tick for next hdecr interrupt */
420 struct QEMUTimer *hdecr_timer;
427 static always_inline uint64_t cpu_ppc_get_tb (ppc_tb_t *tb_env,
430 /* TB time in tb periods */
431 return muldiv64(qemu_get_clock(vm_clock) + tb_env->tb_offset,
432 tb_env->tb_freq, ticks_per_sec);
435 uint32_t cpu_ppc_load_tbl (CPUState *env)
437 ppc_tb_t *tb_env = env->tb_env;
440 tb = cpu_ppc_get_tb(tb_env, tb_env->tb_offset);
441 #if defined(PPC_DEBUG_TB)
443 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
447 return tb & 0xFFFFFFFF;
450 static always_inline uint32_t _cpu_ppc_load_tbu (CPUState *env)
452 ppc_tb_t *tb_env = env->tb_env;
455 tb = cpu_ppc_get_tb(tb_env, tb_env->tb_offset);
456 #if defined(PPC_DEBUG_TB)
458 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
465 uint32_t cpu_ppc_load_tbu (CPUState *env)
467 return _cpu_ppc_load_tbu(env);
470 static always_inline void cpu_ppc_store_tb (ppc_tb_t *tb_env,
474 *tb_offsetp = muldiv64(value, ticks_per_sec, tb_env->tb_freq)
475 - qemu_get_clock(vm_clock);
478 fprintf(logfile, "%s: tb=0x%016lx offset=%08lx\n", __func__, value,
484 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
486 ppc_tb_t *tb_env = env->tb_env;
489 tb = cpu_ppc_get_tb(tb_env, tb_env->tb_offset);
490 tb &= 0xFFFFFFFF00000000ULL;
491 cpu_ppc_store_tb(tb_env, &tb_env->tb_offset, tb | (uint64_t)value);
494 static always_inline void _cpu_ppc_store_tbu (CPUState *env, uint32_t value)
496 ppc_tb_t *tb_env = env->tb_env;
499 tb = cpu_ppc_get_tb(tb_env, tb_env->tb_offset);
500 tb &= 0x00000000FFFFFFFFULL;
501 cpu_ppc_store_tb(tb_env, &tb_env->tb_offset,
502 ((uint64_t)value << 32) | tb);
505 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
507 _cpu_ppc_store_tbu(env, value);
510 uint32_t cpu_ppc_load_atbl (CPUState *env)
512 ppc_tb_t *tb_env = env->tb_env;
515 tb = cpu_ppc_get_tb(tb_env, tb_env->atb_offset);
516 #if defined(PPC_DEBUG_TB)
518 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
522 return tb & 0xFFFFFFFF;
525 uint32_t cpu_ppc_load_atbu (CPUState *env)
527 ppc_tb_t *tb_env = env->tb_env;
530 tb = cpu_ppc_get_tb(tb_env, tb_env->atb_offset);
531 #if defined(PPC_DEBUG_TB)
533 fprintf(logfile, "%s: tb=0x%016lx\n", __func__, tb);
540 void cpu_ppc_store_atbl (CPUState *env, uint32_t value)
542 ppc_tb_t *tb_env = env->tb_env;
545 tb = cpu_ppc_get_tb(tb_env, tb_env->atb_offset);
546 tb &= 0xFFFFFFFF00000000ULL;
547 cpu_ppc_store_tb(tb_env, &tb_env->atb_offset, tb | (uint64_t)value);
550 void cpu_ppc_store_atbu (CPUState *env, uint32_t value)
552 ppc_tb_t *tb_env = env->tb_env;
555 tb = cpu_ppc_get_tb(tb_env, tb_env->atb_offset);
556 tb &= 0x00000000FFFFFFFFULL;
557 cpu_ppc_store_tb(tb_env, &tb_env->atb_offset,
558 ((uint64_t)value << 32) | tb);
561 static always_inline uint32_t _cpu_ppc_load_decr (CPUState *env,
564 ppc_tb_t *tb_env = env->tb_env;
568 diff = tb_env->decr_next - qemu_get_clock(vm_clock);
570 decr = muldiv64(diff, tb_env->tb_freq, ticks_per_sec);
572 decr = -muldiv64(-diff, tb_env->tb_freq, ticks_per_sec);
573 #if defined(PPC_DEBUG_TB)
575 fprintf(logfile, "%s: 0x%08x\n", __func__, decr);
582 uint32_t cpu_ppc_load_decr (CPUState *env)
584 ppc_tb_t *tb_env = env->tb_env;
586 return _cpu_ppc_load_decr(env, &tb_env->decr_next);
589 #if defined(TARGET_PPC64H)
590 uint32_t cpu_ppc_load_hdecr (CPUState *env)
592 ppc_tb_t *tb_env = env->tb_env;
594 return _cpu_ppc_load_decr(env, &tb_env->hdecr_next);
597 uint64_t cpu_ppc_load_purr (CPUState *env)
599 ppc_tb_t *tb_env = env->tb_env;
602 diff = qemu_get_clock(vm_clock) - tb_env->purr_start;
604 return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, ticks_per_sec);
606 #endif /* defined(TARGET_PPC64H) */
608 /* When decrementer expires,
609 * all we need to do is generate or queue a CPU exception
611 static always_inline void cpu_ppc_decr_excp (CPUState *env)
616 fprintf(logfile, "raise decrementer exception\n");
619 ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
622 static always_inline void cpu_ppc_hdecr_excp (CPUState *env)
627 fprintf(logfile, "raise decrementer exception\n");
630 ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1);
633 static void __cpu_ppc_store_decr (CPUState *env, uint64_t *nextp,
634 struct QEMUTimer *timer,
635 void (*raise_excp)(CPUState *),
636 uint32_t decr, uint32_t value,
639 ppc_tb_t *tb_env = env->tb_env;
644 fprintf(logfile, "%s: 0x%08x => 0x%08x\n", __func__, decr, value);
647 now = qemu_get_clock(vm_clock);
648 next = now + muldiv64(value, ticks_per_sec, tb_env->tb_freq);
650 next += *nextp - now;
655 qemu_mod_timer(timer, next);
656 /* If we set a negative value and the decrementer was positive,
657 * raise an exception.
659 if ((value & 0x80000000) && !(decr & 0x80000000))
663 static always_inline void _cpu_ppc_store_decr (CPUState *env, uint32_t decr,
664 uint32_t value, int is_excp)
666 ppc_tb_t *tb_env = env->tb_env;
668 __cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer,
669 &cpu_ppc_decr_excp, decr, value, is_excp);
672 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
674 _cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
677 static void cpu_ppc_decr_cb (void *opaque)
679 _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1);
682 #if defined(TARGET_PPC64H)
683 static always_inline void _cpu_ppc_store_hdecr (CPUState *env, uint32_t hdecr,
684 uint32_t value, int is_excp)
686 ppc_tb_t *tb_env = env->tb_env;
688 __cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer,
689 &cpu_ppc_hdecr_excp, hdecr, value, is_excp);
692 void cpu_ppc_store_hdecr (CPUState *env, uint32_t value)
694 _cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0);
697 static void cpu_ppc_hdecr_cb (void *opaque)
699 _cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1);
702 void cpu_ppc_store_purr (CPUState *env, uint64_t value)
704 ppc_tb_t *tb_env = env->tb_env;
706 tb_env->purr_load = value;
707 tb_env->purr_start = qemu_get_clock(vm_clock);
709 #endif /* defined(TARGET_PPC64H) */
711 static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
713 CPUState *env = opaque;
714 ppc_tb_t *tb_env = env->tb_env;
716 tb_env->tb_freq = freq;
717 /* There is a bug in Linux 2.4 kernels:
718 * if a decrementer exception is pending when it enables msr_ee at startup,
719 * it's not ready to handle it...
721 _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
722 #if defined(TARGET_PPC64H)
723 _cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
724 cpu_ppc_store_purr(env, 0x0000000000000000ULL);
725 #endif /* defined(TARGET_PPC64H) */
728 /* Set up (once) timebase frequency (in Hz) */
729 clk_setup_cb cpu_ppc_tb_init (CPUState *env, uint32_t freq)
733 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
736 env->tb_env = tb_env;
737 /* Create new timer */
738 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env);
739 #if defined(TARGET_PPC64H)
740 tb_env->hdecr_timer = qemu_new_timer(vm_clock, &cpu_ppc_hdecr_cb, env);
741 #endif /* defined(TARGET_PPC64H) */
742 cpu_ppc_set_tb_clk(env, freq);
744 return &cpu_ppc_set_tb_clk;
747 /* Specific helpers for POWER & PowerPC 601 RTC */
748 clk_setup_cb cpu_ppc601_rtc_init (CPUState *env)
750 return cpu_ppc_tb_init(env, 7812500);
753 void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
755 _cpu_ppc_store_tbu(env, value);
758 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
760 return _cpu_ppc_load_tbu(env);
763 void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
765 cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
768 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
770 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
773 /*****************************************************************************/
774 /* Embedded PowerPC timers */
777 typedef struct ppcemb_timer_t ppcemb_timer_t;
778 struct ppcemb_timer_t {
779 uint64_t pit_reload; /* PIT auto-reload value */
780 uint64_t fit_next; /* Tick for next FIT interrupt */
781 struct QEMUTimer *fit_timer;
782 uint64_t wdt_next; /* Tick for next WDT interrupt */
783 struct QEMUTimer *wdt_timer;
786 /* Fixed interval timer */
787 static void cpu_4xx_fit_cb (void *opaque)
791 ppcemb_timer_t *ppcemb_timer;
795 tb_env = env->tb_env;
796 ppcemb_timer = tb_env->opaque;
797 now = qemu_get_clock(vm_clock);
798 switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
812 /* Cannot occur, but makes gcc happy */
815 next = now + muldiv64(next, ticks_per_sec, tb_env->tb_freq);
818 qemu_mod_timer(ppcemb_timer->fit_timer, next);
819 env->spr[SPR_40x_TSR] |= 1 << 26;
820 if ((env->spr[SPR_40x_TCR] >> 23) & 0x1)
821 ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
824 fprintf(logfile, "%s: ir %d TCR " ADDRX " TSR " ADDRX "\n", __func__,
825 (int)((env->spr[SPR_40x_TCR] >> 23) & 0x1),
826 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
831 /* Programmable interval timer */
832 static void start_stop_pit (CPUState *env, ppc_tb_t *tb_env, int is_excp)
834 ppcemb_timer_t *ppcemb_timer;
837 ppcemb_timer = tb_env->opaque;
838 if (ppcemb_timer->pit_reload <= 1 ||
839 !((env->spr[SPR_40x_TCR] >> 26) & 0x1) ||
840 (is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) {
844 fprintf(logfile, "%s: stop PIT\n", __func__);
847 qemu_del_timer(tb_env->decr_timer);
851 fprintf(logfile, "%s: start PIT 0x" REGX "\n",
852 __func__, ppcemb_timer->pit_reload);
855 now = qemu_get_clock(vm_clock);
856 next = now + muldiv64(ppcemb_timer->pit_reload,
857 ticks_per_sec, tb_env->tb_freq);
859 next += tb_env->decr_next - now;
862 qemu_mod_timer(tb_env->decr_timer, next);
863 tb_env->decr_next = next;
867 static void cpu_4xx_pit_cb (void *opaque)
871 ppcemb_timer_t *ppcemb_timer;
874 tb_env = env->tb_env;
875 ppcemb_timer = tb_env->opaque;
876 env->spr[SPR_40x_TSR] |= 1 << 27;
877 if ((env->spr[SPR_40x_TCR] >> 26) & 0x1)
878 ppc_set_irq(env, PPC_INTERRUPT_PIT, 1);
879 start_stop_pit(env, tb_env, 1);
882 fprintf(logfile, "%s: ar %d ir %d TCR " ADDRX " TSR " ADDRX " "
883 "%016" PRIx64 "\n", __func__,
884 (int)((env->spr[SPR_40x_TCR] >> 22) & 0x1),
885 (int)((env->spr[SPR_40x_TCR] >> 26) & 0x1),
886 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR],
887 ppcemb_timer->pit_reload);
893 static void cpu_4xx_wdt_cb (void *opaque)
897 ppcemb_timer_t *ppcemb_timer;
901 tb_env = env->tb_env;
902 ppcemb_timer = tb_env->opaque;
903 now = qemu_get_clock(vm_clock);
904 switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
918 /* Cannot occur, but makes gcc happy */
921 next = now + muldiv64(next, ticks_per_sec, tb_env->tb_freq);
926 fprintf(logfile, "%s: TCR " ADDRX " TSR " ADDRX "\n", __func__,
927 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
930 switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
933 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
934 ppcemb_timer->wdt_next = next;
935 env->spr[SPR_40x_TSR] |= 1 << 31;
938 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
939 ppcemb_timer->wdt_next = next;
940 env->spr[SPR_40x_TSR] |= 1 << 30;
941 if ((env->spr[SPR_40x_TCR] >> 27) & 0x1)
942 ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
945 env->spr[SPR_40x_TSR] &= ~0x30000000;
946 env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
947 switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) {
951 case 0x1: /* Core reset */
952 ppc40x_core_reset(env);
954 case 0x2: /* Chip reset */
955 ppc40x_chip_reset(env);
957 case 0x3: /* System reset */
958 ppc40x_system_reset(env);
964 void store_40x_pit (CPUState *env, target_ulong val)
967 ppcemb_timer_t *ppcemb_timer;
969 tb_env = env->tb_env;
970 ppcemb_timer = tb_env->opaque;
973 fprintf(logfile, "%s %p %p\n", __func__, tb_env, ppcemb_timer);
976 ppcemb_timer->pit_reload = val;
977 start_stop_pit(env, tb_env, 0);
980 target_ulong load_40x_pit (CPUState *env)
982 return cpu_ppc_load_decr(env);
985 void store_booke_tsr (CPUState *env, target_ulong val)
989 fprintf(logfile, "%s: val=" ADDRX "\n", __func__, val);
992 env->spr[SPR_40x_TSR] &= ~(val & 0xFC000000);
993 if (val & 0x80000000)
994 ppc_set_irq(env, PPC_INTERRUPT_PIT, 0);
997 void store_booke_tcr (CPUState *env, target_ulong val)
1001 tb_env = env->tb_env;
1003 if (loglevel != 0) {
1004 fprintf(logfile, "%s: val=" ADDRX "\n", __func__, val);
1007 env->spr[SPR_40x_TCR] = val & 0xFFC00000;
1008 start_stop_pit(env, tb_env, 1);
1009 cpu_4xx_wdt_cb(env);
1012 static void ppc_emb_set_tb_clk (void *opaque, uint32_t freq)
1014 CPUState *env = opaque;
1015 ppc_tb_t *tb_env = env->tb_env;
1018 if (loglevel != 0) {
1019 fprintf(logfile, "%s set new frequency to %u\n", __func__, freq);
1022 tb_env->tb_freq = freq;
1023 /* XXX: we should also update all timers */
1026 clk_setup_cb ppc_emb_timers_init (CPUState *env, uint32_t freq)
1029 ppcemb_timer_t *ppcemb_timer;
1031 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
1032 if (tb_env == NULL) {
1035 env->tb_env = tb_env;
1036 ppcemb_timer = qemu_mallocz(sizeof(ppcemb_timer_t));
1037 tb_env->tb_freq = freq;
1038 tb_env->opaque = ppcemb_timer;
1040 if (loglevel != 0) {
1041 fprintf(logfile, "%s %p %p %p\n", __func__, tb_env, ppcemb_timer,
1042 &ppc_emb_set_tb_clk);
1045 if (ppcemb_timer != NULL) {
1046 /* We use decr timer for PIT */
1047 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_4xx_pit_cb, env);
1048 ppcemb_timer->fit_timer =
1049 qemu_new_timer(vm_clock, &cpu_4xx_fit_cb, env);
1050 ppcemb_timer->wdt_timer =
1051 qemu_new_timer(vm_clock, &cpu_4xx_wdt_cb, env);
1054 return &ppc_emb_set_tb_clk;
1057 /*****************************************************************************/
1058 /* Embedded PowerPC Device Control Registers */
1059 typedef struct ppc_dcrn_t ppc_dcrn_t;
1061 dcr_read_cb dcr_read;
1062 dcr_write_cb dcr_write;
1066 /* XXX: on 460, DCR addresses are 32 bits wide,
1067 * using DCRIPR to get the 22 upper bits of the DCR address
1069 #define DCRN_NB 1024
1071 ppc_dcrn_t dcrn[DCRN_NB];
1072 int (*read_error)(int dcrn);
1073 int (*write_error)(int dcrn);
1076 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
1080 if (dcrn < 0 || dcrn >= DCRN_NB)
1082 dcr = &dcr_env->dcrn[dcrn];
1083 if (dcr->dcr_read == NULL)
1085 *valp = (*dcr->dcr_read)(dcr->opaque, dcrn);
1090 if (dcr_env->read_error != NULL)
1091 return (*dcr_env->read_error)(dcrn);
1096 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
1100 if (dcrn < 0 || dcrn >= DCRN_NB)
1102 dcr = &dcr_env->dcrn[dcrn];
1103 if (dcr->dcr_write == NULL)
1105 (*dcr->dcr_write)(dcr->opaque, dcrn, val);
1110 if (dcr_env->write_error != NULL)
1111 return (*dcr_env->write_error)(dcrn);
1116 int ppc_dcr_register (CPUState *env, int dcrn, void *opaque,
1117 dcr_read_cb dcr_read, dcr_write_cb dcr_write)
1122 dcr_env = env->dcr_env;
1123 if (dcr_env == NULL)
1125 if (dcrn < 0 || dcrn >= DCRN_NB)
1127 dcr = &dcr_env->dcrn[dcrn];
1128 if (dcr->opaque != NULL ||
1129 dcr->dcr_read != NULL ||
1130 dcr->dcr_write != NULL)
1132 dcr->opaque = opaque;
1133 dcr->dcr_read = dcr_read;
1134 dcr->dcr_write = dcr_write;
1139 int ppc_dcr_init (CPUState *env, int (*read_error)(int dcrn),
1140 int (*write_error)(int dcrn))
1144 dcr_env = qemu_mallocz(sizeof(ppc_dcr_t));
1145 if (dcr_env == NULL)
1147 dcr_env->read_error = read_error;
1148 dcr_env->write_error = write_error;
1149 env->dcr_env = dcr_env;
1156 /*****************************************************************************/
1157 /* Handle system reset (for now, just stop emulation) */
1158 void cpu_ppc_reset (CPUState *env)
1160 printf("Reset asked... Stop emulation\n");
1165 /*****************************************************************************/
1167 void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
1179 printf("Set loglevel to %04x\n", val);
1180 cpu_set_log(val | 0x100);
1185 /*****************************************************************************/
1187 void NVRAM_set_byte (m48t59_t *nvram, uint32_t addr, uint8_t value)
1189 m48t59_write(nvram, addr, value);
1192 uint8_t NVRAM_get_byte (m48t59_t *nvram, uint32_t addr)
1194 return m48t59_read(nvram, addr);
1197 void NVRAM_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
1199 m48t59_write(nvram, addr, value >> 8);
1200 m48t59_write(nvram, addr + 1, value & 0xFF);
1203 uint16_t NVRAM_get_word (m48t59_t *nvram, uint32_t addr)
1207 tmp = m48t59_read(nvram, addr) << 8;
1208 tmp |= m48t59_read(nvram, addr + 1);
1212 void NVRAM_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value)
1214 m48t59_write(nvram, addr, value >> 24);
1215 m48t59_write(nvram, addr + 1, (value >> 16) & 0xFF);
1216 m48t59_write(nvram, addr + 2, (value >> 8) & 0xFF);
1217 m48t59_write(nvram, addr + 3, value & 0xFF);
1220 uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr)
1224 tmp = m48t59_read(nvram, addr) << 24;
1225 tmp |= m48t59_read(nvram, addr + 1) << 16;
1226 tmp |= m48t59_read(nvram, addr + 2) << 8;
1227 tmp |= m48t59_read(nvram, addr + 3);
1232 void NVRAM_set_string (m48t59_t *nvram, uint32_t addr,
1233 const unsigned char *str, uint32_t max)
1237 for (i = 0; i < max && str[i] != '\0'; i++) {
1238 m48t59_write(nvram, addr + i, str[i]);
1240 m48t59_write(nvram, addr + max - 1, '\0');
1243 int NVRAM_get_string (m48t59_t *nvram, uint8_t *dst, uint16_t addr, int max)
1247 memset(dst, 0, max);
1248 for (i = 0; i < max; i++) {
1249 dst[i] = NVRAM_get_byte(nvram, addr + i);
1257 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
1260 uint16_t pd, pd1, pd2;
1265 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
1266 tmp ^= (pd1 << 3) | (pd1 << 8);
1267 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
1272 uint16_t NVRAM_compute_crc (m48t59_t *nvram, uint32_t start, uint32_t count)
1275 uint16_t crc = 0xFFFF;
1280 for (i = 0; i != count; i++) {
1281 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
1284 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
1290 #define CMDLINE_ADDR 0x017ff000
1292 int PPC_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
1293 const unsigned char *arch,
1294 uint32_t RAM_size, int boot_device,
1295 uint32_t kernel_image, uint32_t kernel_size,
1296 const char *cmdline,
1297 uint32_t initrd_image, uint32_t initrd_size,
1298 uint32_t NVRAM_image,
1299 int width, int height, int depth)
1303 /* Set parameters for Open Hack'Ware BIOS */
1304 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
1305 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
1306 NVRAM_set_word(nvram, 0x14, NVRAM_size);
1307 NVRAM_set_string(nvram, 0x20, arch, 16);
1308 NVRAM_set_lword(nvram, 0x30, RAM_size);
1309 NVRAM_set_byte(nvram, 0x34, boot_device);
1310 NVRAM_set_lword(nvram, 0x38, kernel_image);
1311 NVRAM_set_lword(nvram, 0x3C, kernel_size);
1313 /* XXX: put the cmdline in NVRAM too ? */
1314 strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
1315 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
1316 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
1318 NVRAM_set_lword(nvram, 0x40, 0);
1319 NVRAM_set_lword(nvram, 0x44, 0);
1321 NVRAM_set_lword(nvram, 0x48, initrd_image);
1322 NVRAM_set_lword(nvram, 0x4C, initrd_size);
1323 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
1325 NVRAM_set_word(nvram, 0x54, width);
1326 NVRAM_set_word(nvram, 0x56, height);
1327 NVRAM_set_word(nvram, 0x58, depth);
1328 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
1329 NVRAM_set_word(nvram, 0xFC, crc);