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 #include "qemu-timer.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 (CPUState *env);
51 static void cpu_ppc_tb_start (CPUState *env);
53 static void ppc_set_irq (CPUState *env, int n_IRQ, int level)
55 unsigned int old_pending = env->pending_interrupts;
58 env->pending_interrupts |= 1 << n_IRQ;
59 cpu_interrupt(env, CPU_INTERRUPT_HARD);
61 env->pending_interrupts &= ~(1 << n_IRQ);
62 if (env->pending_interrupts == 0)
63 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
66 if (old_pending != env->pending_interrupts) {
68 kvmppc_set_interrupt(env, n_IRQ, level);
72 LOG_IRQ("%s: %p n_IRQ %d level %d => pending %08" PRIx32
73 "req %08x\n", __func__, env, n_IRQ, level,
74 env->pending_interrupts, env->interrupt_request);
77 /* PowerPC 6xx / 7xx internal IRQ controller */
78 static void ppc6xx_set_irq (void *opaque, int pin, int level)
80 CPUState *env = opaque;
83 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
85 cur_level = (env->irq_input_state >> pin) & 1;
86 /* Don't generate spurious events */
87 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
89 case PPC6xx_INPUT_TBEN:
90 /* Level sensitive - active high */
91 LOG_IRQ("%s: %s the time base\n",
92 __func__, level ? "start" : "stop");
94 cpu_ppc_tb_start(env);
98 case PPC6xx_INPUT_INT:
99 /* Level sensitive - active high */
100 LOG_IRQ("%s: set the external IRQ state to %d\n",
102 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
104 case PPC6xx_INPUT_SMI:
105 /* Level sensitive - active high */
106 LOG_IRQ("%s: set the SMI IRQ state to %d\n",
108 ppc_set_irq(env, PPC_INTERRUPT_SMI, level);
110 case PPC6xx_INPUT_MCP:
111 /* Negative edge sensitive */
112 /* XXX: TODO: actual reaction may depends on HID0 status
113 * 603/604/740/750: check HID0[EMCP]
115 if (cur_level == 1 && level == 0) {
116 LOG_IRQ("%s: raise machine check state\n",
118 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
121 case PPC6xx_INPUT_CKSTP_IN:
122 /* Level sensitive - active low */
123 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
124 /* XXX: Note that the only way to restart the CPU is to reset it */
126 LOG_IRQ("%s: stop the CPU\n", __func__);
130 case PPC6xx_INPUT_HRESET:
131 /* Level sensitive - active low */
133 LOG_IRQ("%s: reset the CPU\n", __func__);
134 env->interrupt_request |= CPU_INTERRUPT_EXITTB;
139 qemu_system_reset_request();
143 case PPC6xx_INPUT_SRESET:
144 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
146 ppc_set_irq(env, 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 (CPUState *env)
162 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env,
166 #if defined(TARGET_PPC64)
167 /* PowerPC 970 internal IRQ controller */
168 static void ppc970_set_irq (void *opaque, int pin, int level)
170 CPUState *env = opaque;
173 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
175 cur_level = (env->irq_input_state >> pin) & 1;
176 /* Don't generate spurious events */
177 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
179 case PPC970_INPUT_INT:
180 /* Level sensitive - active high */
181 LOG_IRQ("%s: set the external IRQ state to %d\n",
183 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
185 case PPC970_INPUT_THINT:
186 /* Level sensitive - active high */
187 LOG_IRQ("%s: set the SMI IRQ state to %d\n", __func__,
189 ppc_set_irq(env, PPC_INTERRUPT_THERM, level);
191 case PPC970_INPUT_MCP:
192 /* Negative edge sensitive */
193 /* XXX: TODO: actual reaction may depends on HID0 status
194 * 603/604/740/750: check HID0[EMCP]
196 if (cur_level == 1 && level == 0) {
197 LOG_IRQ("%s: raise machine check state\n",
199 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
202 case PPC970_INPUT_CKSTP:
203 /* Level sensitive - active low */
204 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
206 LOG_IRQ("%s: stop the CPU\n", __func__);
209 LOG_IRQ("%s: restart the CPU\n", __func__);
213 case PPC970_INPUT_HRESET:
214 /* Level sensitive - active low */
217 LOG_IRQ("%s: reset the CPU\n", __func__);
222 case PPC970_INPUT_SRESET:
223 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
225 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
227 case PPC970_INPUT_TBEN:
228 LOG_IRQ("%s: set the TBEN state to %d\n", __func__,
233 /* Unknown pin - do nothing */
234 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
238 env->irq_input_state |= 1 << pin;
240 env->irq_input_state &= ~(1 << pin);
244 void ppc970_irq_init (CPUState *env)
246 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, env,
249 #endif /* defined(TARGET_PPC64) */
251 /* PowerPC 40x internal IRQ controller */
252 static void ppc40x_set_irq (void *opaque, int pin, int level)
254 CPUState *env = opaque;
257 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
259 cur_level = (env->irq_input_state >> pin) & 1;
260 /* Don't generate spurious events */
261 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
263 case PPC40x_INPUT_RESET_SYS:
265 LOG_IRQ("%s: reset the PowerPC system\n",
267 ppc40x_system_reset(env);
270 case PPC40x_INPUT_RESET_CHIP:
272 LOG_IRQ("%s: reset the PowerPC chip\n", __func__);
273 ppc40x_chip_reset(env);
276 case PPC40x_INPUT_RESET_CORE:
277 /* XXX: TODO: update DBSR[MRR] */
279 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
280 ppc40x_core_reset(env);
283 case PPC40x_INPUT_CINT:
284 /* Level sensitive - active high */
285 LOG_IRQ("%s: set the critical IRQ state to %d\n",
287 ppc_set_irq(env, PPC_INTERRUPT_CEXT, level);
289 case PPC40x_INPUT_INT:
290 /* Level sensitive - active high */
291 LOG_IRQ("%s: set the external IRQ state to %d\n",
293 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
295 case PPC40x_INPUT_HALT:
296 /* Level sensitive - active low */
298 LOG_IRQ("%s: stop the CPU\n", __func__);
301 LOG_IRQ("%s: restart the CPU\n", __func__);
305 case PPC40x_INPUT_DEBUG:
306 /* Level sensitive - active high */
307 LOG_IRQ("%s: set the debug pin state to %d\n",
309 ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level);
312 /* Unknown pin - do nothing */
313 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
317 env->irq_input_state |= 1 << pin;
319 env->irq_input_state &= ~(1 << pin);
323 void ppc40x_irq_init (CPUState *env)
325 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
326 env, PPC40x_INPUT_NB);
329 /* PowerPC E500 internal IRQ controller */
330 static void ppce500_set_irq (void *opaque, int pin, int level)
332 CPUState *env = opaque;
335 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
337 cur_level = (env->irq_input_state >> pin) & 1;
338 /* Don't generate spurious events */
339 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
341 case PPCE500_INPUT_MCK:
343 LOG_IRQ("%s: reset the PowerPC system\n",
345 qemu_system_reset_request();
348 case PPCE500_INPUT_RESET_CORE:
350 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
351 ppc_set_irq(env, PPC_INTERRUPT_MCK, level);
354 case PPCE500_INPUT_CINT:
355 /* Level sensitive - active high */
356 LOG_IRQ("%s: set the critical IRQ state to %d\n",
358 ppc_set_irq(env, PPC_INTERRUPT_CEXT, level);
360 case PPCE500_INPUT_INT:
361 /* Level sensitive - active high */
362 LOG_IRQ("%s: set the core IRQ state to %d\n",
364 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
366 case PPCE500_INPUT_DEBUG:
367 /* Level sensitive - active high */
368 LOG_IRQ("%s: set the debug pin state to %d\n",
370 ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level);
373 /* Unknown pin - do nothing */
374 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
378 env->irq_input_state |= 1 << pin;
380 env->irq_input_state &= ~(1 << pin);
384 void ppce500_irq_init (CPUState *env)
386 env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
387 env, PPCE500_INPUT_NB);
389 /*****************************************************************************/
390 /* PowerPC time base and decrementer emulation */
392 /* Time base management */
393 int64_t tb_offset; /* Compensation */
394 int64_t atb_offset; /* Compensation */
395 uint32_t tb_freq; /* TB frequency */
396 /* Decrementer management */
397 uint64_t decr_next; /* Tick for next decr interrupt */
398 uint32_t decr_freq; /* decrementer frequency */
399 struct QEMUTimer *decr_timer;
400 /* Hypervisor decrementer management */
401 uint64_t hdecr_next; /* Tick for next hdecr interrupt */
402 struct QEMUTimer *hdecr_timer;
408 static inline uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk,
411 /* TB time in tb periods */
412 return muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()) + tb_offset;
415 uint64_t cpu_ppc_load_tbl (CPUState *env)
417 ppc_tb_t *tb_env = env->tb_env;
420 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
421 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
426 static inline uint32_t _cpu_ppc_load_tbu(CPUState *env)
428 ppc_tb_t *tb_env = env->tb_env;
431 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
432 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
437 uint32_t cpu_ppc_load_tbu (CPUState *env)
439 return _cpu_ppc_load_tbu(env);
442 static inline void cpu_ppc_store_tb(ppc_tb_t *tb_env, uint64_t vmclk,
443 int64_t *tb_offsetp, uint64_t value)
445 *tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec());
446 LOG_TB("%s: tb %016" PRIx64 " offset %08" PRIx64 "\n",
447 __func__, value, *tb_offsetp);
450 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
452 ppc_tb_t *tb_env = env->tb_env;
455 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
456 tb &= 0xFFFFFFFF00000000ULL;
457 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
458 &tb_env->tb_offset, tb | (uint64_t)value);
461 static inline void _cpu_ppc_store_tbu(CPUState *env, uint32_t value)
463 ppc_tb_t *tb_env = env->tb_env;
466 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset);
467 tb &= 0x00000000FFFFFFFFULL;
468 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
469 &tb_env->tb_offset, ((uint64_t)value << 32) | tb);
472 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
474 _cpu_ppc_store_tbu(env, value);
477 uint64_t cpu_ppc_load_atbl (CPUState *env)
479 ppc_tb_t *tb_env = env->tb_env;
482 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
483 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
488 uint32_t cpu_ppc_load_atbu (CPUState *env)
490 ppc_tb_t *tb_env = env->tb_env;
493 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
494 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
499 void cpu_ppc_store_atbl (CPUState *env, uint32_t value)
501 ppc_tb_t *tb_env = env->tb_env;
504 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
505 tb &= 0xFFFFFFFF00000000ULL;
506 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
507 &tb_env->atb_offset, tb | (uint64_t)value);
510 void cpu_ppc_store_atbu (CPUState *env, uint32_t value)
512 ppc_tb_t *tb_env = env->tb_env;
515 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset);
516 tb &= 0x00000000FFFFFFFFULL;
517 cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock),
518 &tb_env->atb_offset, ((uint64_t)value << 32) | tb);
521 static void cpu_ppc_tb_stop (CPUState *env)
523 ppc_tb_t *tb_env = env->tb_env;
524 uint64_t tb, atb, vmclk;
526 /* If the time base is already frozen, do nothing */
527 if (tb_env->tb_freq != 0) {
528 vmclk = qemu_get_clock(vm_clock);
529 /* Get the time base */
530 tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset);
531 /* Get the alternate time base */
532 atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset);
533 /* Store the time base value (ie compute the current offset) */
534 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
535 /* Store the alternate time base value (compute the current offset) */
536 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
537 /* Set the time base frequency to zero */
539 /* Now, the time bases are frozen to tb_offset / atb_offset value */
543 static void cpu_ppc_tb_start (CPUState *env)
545 ppc_tb_t *tb_env = env->tb_env;
546 uint64_t tb, atb, vmclk;
548 /* If the time base is not frozen, do nothing */
549 if (tb_env->tb_freq == 0) {
550 vmclk = qemu_get_clock(vm_clock);
551 /* Get the time base from tb_offset */
552 tb = tb_env->tb_offset;
553 /* Get the alternate time base from atb_offset */
554 atb = tb_env->atb_offset;
555 /* Restore the tb frequency from the decrementer frequency */
556 tb_env->tb_freq = tb_env->decr_freq;
557 /* Store the time base value */
558 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
559 /* Store the alternate time base value */
560 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
564 static inline uint32_t _cpu_ppc_load_decr(CPUState *env, uint64_t next)
566 ppc_tb_t *tb_env = env->tb_env;
570 diff = next - qemu_get_clock(vm_clock);
572 decr = muldiv64(diff, tb_env->decr_freq, get_ticks_per_sec());
574 decr = -muldiv64(-diff, tb_env->decr_freq, get_ticks_per_sec());
575 LOG_TB("%s: %08" PRIx32 "\n", __func__, decr);
580 uint32_t cpu_ppc_load_decr (CPUState *env)
582 ppc_tb_t *tb_env = env->tb_env;
584 return _cpu_ppc_load_decr(env, tb_env->decr_next);
587 uint32_t cpu_ppc_load_hdecr (CPUState *env)
589 ppc_tb_t *tb_env = env->tb_env;
591 return _cpu_ppc_load_decr(env, tb_env->hdecr_next);
594 uint64_t cpu_ppc_load_purr (CPUState *env)
596 ppc_tb_t *tb_env = env->tb_env;
599 diff = qemu_get_clock(vm_clock) - tb_env->purr_start;
601 return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, get_ticks_per_sec());
604 /* When decrementer expires,
605 * all we need to do is generate or queue a CPU exception
607 static inline void cpu_ppc_decr_excp(CPUState *env)
610 LOG_TB("raise decrementer exception\n");
611 ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
614 static inline void cpu_ppc_hdecr_excp(CPUState *env)
617 LOG_TB("raise decrementer exception\n");
618 ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1);
621 static void __cpu_ppc_store_decr (CPUState *env, uint64_t *nextp,
622 struct QEMUTimer *timer,
623 void (*raise_excp)(CPUState *),
624 uint32_t decr, uint32_t value,
627 ppc_tb_t *tb_env = env->tb_env;
630 LOG_TB("%s: %08" PRIx32 " => %08" PRIx32 "\n", __func__,
632 now = qemu_get_clock(vm_clock);
633 next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq);
635 next += *nextp - now;
640 qemu_mod_timer(timer, next);
641 /* If we set a negative value and the decrementer was positive,
642 * raise an exception.
644 if ((value & 0x80000000) && !(decr & 0x80000000))
648 static inline void _cpu_ppc_store_decr(CPUState *env, uint32_t decr,
649 uint32_t value, int is_excp)
651 ppc_tb_t *tb_env = env->tb_env;
653 __cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer,
654 &cpu_ppc_decr_excp, decr, value, is_excp);
657 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
659 _cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
662 static void cpu_ppc_decr_cb (void *opaque)
664 _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1);
667 static inline void _cpu_ppc_store_hdecr(CPUState *env, uint32_t hdecr,
668 uint32_t value, int is_excp)
670 ppc_tb_t *tb_env = env->tb_env;
672 if (tb_env->hdecr_timer != NULL) {
673 __cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer,
674 &cpu_ppc_hdecr_excp, hdecr, value, is_excp);
678 void cpu_ppc_store_hdecr (CPUState *env, uint32_t value)
680 _cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0);
683 static void cpu_ppc_hdecr_cb (void *opaque)
685 _cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1);
688 void cpu_ppc_store_purr (CPUState *env, uint64_t value)
690 ppc_tb_t *tb_env = env->tb_env;
692 tb_env->purr_load = value;
693 tb_env->purr_start = qemu_get_clock(vm_clock);
696 static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
698 CPUState *env = opaque;
699 ppc_tb_t *tb_env = env->tb_env;
701 tb_env->tb_freq = freq;
702 tb_env->decr_freq = freq;
703 /* There is a bug in Linux 2.4 kernels:
704 * if a decrementer exception is pending when it enables msr_ee at startup,
705 * it's not ready to handle it...
707 _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
708 _cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
709 cpu_ppc_store_purr(env, 0x0000000000000000ULL);
712 /* Set up (once) timebase frequency (in Hz) */
713 clk_setup_cb cpu_ppc_tb_init (CPUState *env, uint32_t freq)
717 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
718 env->tb_env = tb_env;
719 /* Create new timer */
720 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env);
722 /* XXX: find a suitable condition to enable the hypervisor decrementer
724 tb_env->hdecr_timer = qemu_new_timer(vm_clock, &cpu_ppc_hdecr_cb, env);
726 tb_env->hdecr_timer = NULL;
728 cpu_ppc_set_tb_clk(env, freq);
730 return &cpu_ppc_set_tb_clk;
733 /* Specific helpers for POWER & PowerPC 601 RTC */
735 static clk_setup_cb cpu_ppc601_rtc_init (CPUState *env)
737 return cpu_ppc_tb_init(env, 7812500);
741 void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
743 _cpu_ppc_store_tbu(env, value);
746 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
748 return _cpu_ppc_load_tbu(env);
751 void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
753 cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
756 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
758 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
761 /*****************************************************************************/
762 /* Embedded PowerPC timers */
765 typedef struct ppcemb_timer_t ppcemb_timer_t;
766 struct ppcemb_timer_t {
767 uint64_t pit_reload; /* PIT auto-reload value */
768 uint64_t fit_next; /* Tick for next FIT interrupt */
769 struct QEMUTimer *fit_timer;
770 uint64_t wdt_next; /* Tick for next WDT interrupt */
771 struct QEMUTimer *wdt_timer;
774 /* Fixed interval timer */
775 static void cpu_4xx_fit_cb (void *opaque)
779 ppcemb_timer_t *ppcemb_timer;
783 tb_env = env->tb_env;
784 ppcemb_timer = tb_env->opaque;
785 now = qemu_get_clock(vm_clock);
786 switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
800 /* Cannot occur, but makes gcc happy */
803 next = now + muldiv64(next, get_ticks_per_sec(), tb_env->tb_freq);
806 qemu_mod_timer(ppcemb_timer->fit_timer, next);
807 env->spr[SPR_40x_TSR] |= 1 << 26;
808 if ((env->spr[SPR_40x_TCR] >> 23) & 0x1)
809 ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
810 LOG_TB("%s: ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__,
811 (int)((env->spr[SPR_40x_TCR] >> 23) & 0x1),
812 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
815 /* Programmable interval timer */
816 static void start_stop_pit (CPUState *env, ppc_tb_t *tb_env, int is_excp)
818 ppcemb_timer_t *ppcemb_timer;
821 ppcemb_timer = tb_env->opaque;
822 if (ppcemb_timer->pit_reload <= 1 ||
823 !((env->spr[SPR_40x_TCR] >> 26) & 0x1) ||
824 (is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) {
826 LOG_TB("%s: stop PIT\n", __func__);
827 qemu_del_timer(tb_env->decr_timer);
829 LOG_TB("%s: start PIT %016" PRIx64 "\n",
830 __func__, ppcemb_timer->pit_reload);
831 now = qemu_get_clock(vm_clock);
832 next = now + muldiv64(ppcemb_timer->pit_reload,
833 get_ticks_per_sec(), tb_env->decr_freq);
835 next += tb_env->decr_next - now;
838 qemu_mod_timer(tb_env->decr_timer, next);
839 tb_env->decr_next = next;
843 static void cpu_4xx_pit_cb (void *opaque)
847 ppcemb_timer_t *ppcemb_timer;
850 tb_env = env->tb_env;
851 ppcemb_timer = tb_env->opaque;
852 env->spr[SPR_40x_TSR] |= 1 << 27;
853 if ((env->spr[SPR_40x_TCR] >> 26) & 0x1)
854 ppc_set_irq(env, PPC_INTERRUPT_PIT, 1);
855 start_stop_pit(env, tb_env, 1);
856 LOG_TB("%s: ar %d ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx " "
857 "%016" PRIx64 "\n", __func__,
858 (int)((env->spr[SPR_40x_TCR] >> 22) & 0x1),
859 (int)((env->spr[SPR_40x_TCR] >> 26) & 0x1),
860 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR],
861 ppcemb_timer->pit_reload);
865 static void cpu_4xx_wdt_cb (void *opaque)
869 ppcemb_timer_t *ppcemb_timer;
873 tb_env = env->tb_env;
874 ppcemb_timer = tb_env->opaque;
875 now = qemu_get_clock(vm_clock);
876 switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
890 /* Cannot occur, but makes gcc happy */
893 next = now + muldiv64(next, get_ticks_per_sec(), tb_env->decr_freq);
896 LOG_TB("%s: TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__,
897 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
898 switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
901 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
902 ppcemb_timer->wdt_next = next;
903 env->spr[SPR_40x_TSR] |= 1 << 31;
906 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
907 ppcemb_timer->wdt_next = next;
908 env->spr[SPR_40x_TSR] |= 1 << 30;
909 if ((env->spr[SPR_40x_TCR] >> 27) & 0x1)
910 ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
913 env->spr[SPR_40x_TSR] &= ~0x30000000;
914 env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
915 switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) {
919 case 0x1: /* Core reset */
920 ppc40x_core_reset(env);
922 case 0x2: /* Chip reset */
923 ppc40x_chip_reset(env);
925 case 0x3: /* System reset */
926 ppc40x_system_reset(env);
932 void store_40x_pit (CPUState *env, target_ulong val)
935 ppcemb_timer_t *ppcemb_timer;
937 tb_env = env->tb_env;
938 ppcemb_timer = tb_env->opaque;
939 LOG_TB("%s val" TARGET_FMT_lx "\n", __func__, val);
940 ppcemb_timer->pit_reload = val;
941 start_stop_pit(env, tb_env, 0);
944 target_ulong load_40x_pit (CPUState *env)
946 return cpu_ppc_load_decr(env);
949 void store_booke_tsr (CPUState *env, target_ulong val)
951 LOG_TB("%s: val " TARGET_FMT_lx "\n", __func__, val);
952 env->spr[SPR_40x_TSR] &= ~(val & 0xFC000000);
953 if (val & 0x80000000)
954 ppc_set_irq(env, PPC_INTERRUPT_PIT, 0);
957 void store_booke_tcr (CPUState *env, target_ulong val)
961 tb_env = env->tb_env;
962 LOG_TB("%s: val " TARGET_FMT_lx "\n", __func__, val);
963 env->spr[SPR_40x_TCR] = val & 0xFFC00000;
964 start_stop_pit(env, tb_env, 1);
968 static void ppc_emb_set_tb_clk (void *opaque, uint32_t freq)
970 CPUState *env = opaque;
971 ppc_tb_t *tb_env = env->tb_env;
973 LOG_TB("%s set new frequency to %" PRIu32 "\n", __func__,
975 tb_env->tb_freq = freq;
976 tb_env->decr_freq = freq;
977 /* XXX: we should also update all timers */
980 clk_setup_cb ppc_emb_timers_init (CPUState *env, uint32_t freq)
983 ppcemb_timer_t *ppcemb_timer;
985 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
986 env->tb_env = tb_env;
987 ppcemb_timer = qemu_mallocz(sizeof(ppcemb_timer_t));
988 tb_env->tb_freq = freq;
989 tb_env->decr_freq = freq;
990 tb_env->opaque = ppcemb_timer;
991 LOG_TB("%s freq %" PRIu32 "\n", __func__, freq);
992 if (ppcemb_timer != NULL) {
993 /* We use decr timer for PIT */
994 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_4xx_pit_cb, env);
995 ppcemb_timer->fit_timer =
996 qemu_new_timer(vm_clock, &cpu_4xx_fit_cb, env);
997 ppcemb_timer->wdt_timer =
998 qemu_new_timer(vm_clock, &cpu_4xx_wdt_cb, env);
1001 return &ppc_emb_set_tb_clk;
1004 /*****************************************************************************/
1005 /* Embedded PowerPC Device Control Registers */
1006 typedef struct ppc_dcrn_t ppc_dcrn_t;
1008 dcr_read_cb dcr_read;
1009 dcr_write_cb dcr_write;
1013 /* XXX: on 460, DCR addresses are 32 bits wide,
1014 * using DCRIPR to get the 22 upper bits of the DCR address
1016 #define DCRN_NB 1024
1018 ppc_dcrn_t dcrn[DCRN_NB];
1019 int (*read_error)(int dcrn);
1020 int (*write_error)(int dcrn);
1023 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1027 if (dcrn < 0 || dcrn >= DCRN_NB)
1029 dcr = &dcr_env->dcrn[dcrn];
1030 if (dcr->dcr_read == NULL)
1032 *valp = (*dcr->dcr_read)(dcr->opaque, dcrn);
1037 if (dcr_env->read_error != NULL)
1038 return (*dcr_env->read_error)(dcrn);
1043 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1047 if (dcrn < 0 || dcrn >= DCRN_NB)
1049 dcr = &dcr_env->dcrn[dcrn];
1050 if (dcr->dcr_write == NULL)
1052 (*dcr->dcr_write)(dcr->opaque, dcrn, val);
1057 if (dcr_env->write_error != NULL)
1058 return (*dcr_env->write_error)(dcrn);
1063 int ppc_dcr_register (CPUState *env, int dcrn, void *opaque,
1064 dcr_read_cb dcr_read, dcr_write_cb dcr_write)
1069 dcr_env = env->dcr_env;
1070 if (dcr_env == NULL)
1072 if (dcrn < 0 || dcrn >= DCRN_NB)
1074 dcr = &dcr_env->dcrn[dcrn];
1075 if (dcr->opaque != NULL ||
1076 dcr->dcr_read != NULL ||
1077 dcr->dcr_write != NULL)
1079 dcr->opaque = opaque;
1080 dcr->dcr_read = dcr_read;
1081 dcr->dcr_write = dcr_write;
1086 int ppc_dcr_init (CPUState *env, int (*read_error)(int dcrn),
1087 int (*write_error)(int dcrn))
1091 dcr_env = qemu_mallocz(sizeof(ppc_dcr_t));
1092 dcr_env->read_error = read_error;
1093 dcr_env->write_error = write_error;
1094 env->dcr_env = dcr_env;
1099 /*****************************************************************************/
1101 void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
1113 printf("Set loglevel to %04" PRIx32 "\n", val);
1114 cpu_set_log(val | 0x100);
1119 /*****************************************************************************/
1121 static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr)
1123 return (*nvram->read_fn)(nvram->opaque, addr);;
1126 static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val)
1128 (*nvram->write_fn)(nvram->opaque, addr, val);
1131 void NVRAM_set_byte (nvram_t *nvram, uint32_t addr, uint8_t value)
1133 nvram_write(nvram, addr, value);
1136 uint8_t NVRAM_get_byte (nvram_t *nvram, uint32_t addr)
1138 return nvram_read(nvram, addr);
1141 void NVRAM_set_word (nvram_t *nvram, uint32_t addr, uint16_t value)
1143 nvram_write(nvram, addr, value >> 8);
1144 nvram_write(nvram, addr + 1, value & 0xFF);
1147 uint16_t NVRAM_get_word (nvram_t *nvram, uint32_t addr)
1151 tmp = nvram_read(nvram, addr) << 8;
1152 tmp |= nvram_read(nvram, addr + 1);
1157 void NVRAM_set_lword (nvram_t *nvram, uint32_t addr, uint32_t value)
1159 nvram_write(nvram, addr, value >> 24);
1160 nvram_write(nvram, addr + 1, (value >> 16) & 0xFF);
1161 nvram_write(nvram, addr + 2, (value >> 8) & 0xFF);
1162 nvram_write(nvram, addr + 3, value & 0xFF);
1165 uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr)
1169 tmp = nvram_read(nvram, addr) << 24;
1170 tmp |= nvram_read(nvram, addr + 1) << 16;
1171 tmp |= nvram_read(nvram, addr + 2) << 8;
1172 tmp |= nvram_read(nvram, addr + 3);
1177 void NVRAM_set_string (nvram_t *nvram, uint32_t addr,
1178 const char *str, uint32_t max)
1182 for (i = 0; i < max && str[i] != '\0'; i++) {
1183 nvram_write(nvram, addr + i, str[i]);
1185 nvram_write(nvram, addr + i, str[i]);
1186 nvram_write(nvram, addr + max - 1, '\0');
1189 int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max)
1193 memset(dst, 0, max);
1194 for (i = 0; i < max; i++) {
1195 dst[i] = NVRAM_get_byte(nvram, addr + i);
1203 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
1206 uint16_t pd, pd1, pd2;
1211 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
1212 tmp ^= (pd1 << 3) | (pd1 << 8);
1213 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
1218 static uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count)
1221 uint16_t crc = 0xFFFF;
1226 for (i = 0; i != count; i++) {
1227 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
1230 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
1236 #define CMDLINE_ADDR 0x017ff000
1238 int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
1240 uint32_t RAM_size, int boot_device,
1241 uint32_t kernel_image, uint32_t kernel_size,
1242 const char *cmdline,
1243 uint32_t initrd_image, uint32_t initrd_size,
1244 uint32_t NVRAM_image,
1245 int width, int height, int depth)
1249 /* Set parameters for Open Hack'Ware BIOS */
1250 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
1251 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
1252 NVRAM_set_word(nvram, 0x14, NVRAM_size);
1253 NVRAM_set_string(nvram, 0x20, arch, 16);
1254 NVRAM_set_lword(nvram, 0x30, RAM_size);
1255 NVRAM_set_byte(nvram, 0x34, boot_device);
1256 NVRAM_set_lword(nvram, 0x38, kernel_image);
1257 NVRAM_set_lword(nvram, 0x3C, kernel_size);
1259 /* XXX: put the cmdline in NVRAM too ? */
1260 pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR, cmdline);
1261 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
1262 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
1264 NVRAM_set_lword(nvram, 0x40, 0);
1265 NVRAM_set_lword(nvram, 0x44, 0);
1267 NVRAM_set_lword(nvram, 0x48, initrd_image);
1268 NVRAM_set_lword(nvram, 0x4C, initrd_size);
1269 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
1271 NVRAM_set_word(nvram, 0x54, width);
1272 NVRAM_set_word(nvram, 0x56, height);
1273 NVRAM_set_word(nvram, 0x58, depth);
1274 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
1275 NVRAM_set_word(nvram, 0xFC, crc);