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 (CPUPPCState *env);
51 static void cpu_ppc_tb_start (CPUPPCState *env);
53 void ppc_set_irq(CPUPPCState *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 CPUPPCState *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 cpu_interrupt(env, CPU_INTERRUPT_RESET);
137 case PPC6xx_INPUT_SRESET:
138 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
140 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
143 /* Unknown pin - do nothing */
144 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
148 env->irq_input_state |= 1 << pin;
150 env->irq_input_state &= ~(1 << pin);
154 void ppc6xx_irq_init (CPUPPCState *env)
156 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env,
160 #if defined(TARGET_PPC64)
161 /* PowerPC 970 internal IRQ controller */
162 static void ppc970_set_irq (void *opaque, int pin, int level)
164 CPUPPCState *env = opaque;
167 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
169 cur_level = (env->irq_input_state >> pin) & 1;
170 /* Don't generate spurious events */
171 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
173 case PPC970_INPUT_INT:
174 /* Level sensitive - active high */
175 LOG_IRQ("%s: set the external IRQ state to %d\n",
177 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
179 case PPC970_INPUT_THINT:
180 /* Level sensitive - active high */
181 LOG_IRQ("%s: set the SMI IRQ state to %d\n", __func__,
183 ppc_set_irq(env, PPC_INTERRUPT_THERM, level);
185 case PPC970_INPUT_MCP:
186 /* Negative edge sensitive */
187 /* XXX: TODO: actual reaction may depends on HID0 status
188 * 603/604/740/750: check HID0[EMCP]
190 if (cur_level == 1 && level == 0) {
191 LOG_IRQ("%s: raise machine check state\n",
193 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
196 case PPC970_INPUT_CKSTP:
197 /* Level sensitive - active low */
198 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
200 LOG_IRQ("%s: stop the CPU\n", __func__);
203 LOG_IRQ("%s: restart the CPU\n", __func__);
208 case PPC970_INPUT_HRESET:
209 /* Level sensitive - active low */
211 cpu_interrupt(env, CPU_INTERRUPT_RESET);
214 case PPC970_INPUT_SRESET:
215 LOG_IRQ("%s: set the RESET IRQ state to %d\n",
217 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
219 case PPC970_INPUT_TBEN:
220 LOG_IRQ("%s: set the TBEN state to %d\n", __func__,
225 /* Unknown pin - do nothing */
226 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
230 env->irq_input_state |= 1 << pin;
232 env->irq_input_state &= ~(1 << pin);
236 void ppc970_irq_init (CPUPPCState *env)
238 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, env,
242 /* POWER7 internal IRQ controller */
243 static void power7_set_irq (void *opaque, int pin, int level)
245 CPUPPCState *env = opaque;
247 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
251 case POWER7_INPUT_INT:
252 /* Level sensitive - active high */
253 LOG_IRQ("%s: set the external IRQ state to %d\n",
255 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
258 /* Unknown pin - do nothing */
259 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
263 env->irq_input_state |= 1 << pin;
265 env->irq_input_state &= ~(1 << pin);
269 void ppcPOWER7_irq_init (CPUPPCState *env)
271 env->irq_inputs = (void **)qemu_allocate_irqs(&power7_set_irq, env,
274 #endif /* defined(TARGET_PPC64) */
276 /* PowerPC 40x internal IRQ controller */
277 static void ppc40x_set_irq (void *opaque, int pin, int level)
279 CPUPPCState *env = opaque;
282 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
284 cur_level = (env->irq_input_state >> pin) & 1;
285 /* Don't generate spurious events */
286 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
288 case PPC40x_INPUT_RESET_SYS:
290 LOG_IRQ("%s: reset the PowerPC system\n",
292 ppc40x_system_reset(env);
295 case PPC40x_INPUT_RESET_CHIP:
297 LOG_IRQ("%s: reset the PowerPC chip\n", __func__);
298 ppc40x_chip_reset(env);
301 case PPC40x_INPUT_RESET_CORE:
302 /* XXX: TODO: update DBSR[MRR] */
304 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
305 ppc40x_core_reset(env);
308 case PPC40x_INPUT_CINT:
309 /* Level sensitive - active high */
310 LOG_IRQ("%s: set the critical IRQ state to %d\n",
312 ppc_set_irq(env, PPC_INTERRUPT_CEXT, level);
314 case PPC40x_INPUT_INT:
315 /* Level sensitive - active high */
316 LOG_IRQ("%s: set the external IRQ state to %d\n",
318 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
320 case PPC40x_INPUT_HALT:
321 /* Level sensitive - active low */
323 LOG_IRQ("%s: stop the CPU\n", __func__);
326 LOG_IRQ("%s: restart the CPU\n", __func__);
331 case PPC40x_INPUT_DEBUG:
332 /* Level sensitive - active high */
333 LOG_IRQ("%s: set the debug pin state to %d\n",
335 ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level);
338 /* Unknown pin - do nothing */
339 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
343 env->irq_input_state |= 1 << pin;
345 env->irq_input_state &= ~(1 << pin);
349 void ppc40x_irq_init (CPUPPCState *env)
351 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
352 env, PPC40x_INPUT_NB);
355 /* PowerPC E500 internal IRQ controller */
356 static void ppce500_set_irq (void *opaque, int pin, int level)
358 CPUPPCState *env = opaque;
361 LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
363 cur_level = (env->irq_input_state >> pin) & 1;
364 /* Don't generate spurious events */
365 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
367 case PPCE500_INPUT_MCK:
369 LOG_IRQ("%s: reset the PowerPC system\n",
371 qemu_system_reset_request();
374 case PPCE500_INPUT_RESET_CORE:
376 LOG_IRQ("%s: reset the PowerPC core\n", __func__);
377 ppc_set_irq(env, PPC_INTERRUPT_MCK, level);
380 case PPCE500_INPUT_CINT:
381 /* Level sensitive - active high */
382 LOG_IRQ("%s: set the critical IRQ state to %d\n",
384 ppc_set_irq(env, PPC_INTERRUPT_CEXT, level);
386 case PPCE500_INPUT_INT:
387 /* Level sensitive - active high */
388 LOG_IRQ("%s: set the core IRQ state to %d\n",
390 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
392 case PPCE500_INPUT_DEBUG:
393 /* Level sensitive - active high */
394 LOG_IRQ("%s: set the debug pin state to %d\n",
396 ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level);
399 /* Unknown pin - do nothing */
400 LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
404 env->irq_input_state |= 1 << pin;
406 env->irq_input_state &= ~(1 << pin);
410 void ppce500_irq_init (CPUPPCState *env)
412 env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
413 env, PPCE500_INPUT_NB);
415 /*****************************************************************************/
416 /* PowerPC time base and decrementer emulation */
418 uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk, int64_t tb_offset)
420 /* TB time in tb periods */
421 return muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()) + tb_offset;
424 uint64_t cpu_ppc_load_tbl (CPUPPCState *env)
426 ppc_tb_t *tb_env = env->tb_env;
430 return env->spr[SPR_TBL];
433 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
434 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
439 static inline uint32_t _cpu_ppc_load_tbu(CPUPPCState *env)
441 ppc_tb_t *tb_env = env->tb_env;
444 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
445 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
450 uint32_t cpu_ppc_load_tbu (CPUPPCState *env)
453 return env->spr[SPR_TBU];
456 return _cpu_ppc_load_tbu(env);
459 static inline void cpu_ppc_store_tb(ppc_tb_t *tb_env, uint64_t vmclk,
460 int64_t *tb_offsetp, uint64_t value)
462 *tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec());
463 LOG_TB("%s: tb %016" PRIx64 " offset %08" PRIx64 "\n",
464 __func__, value, *tb_offsetp);
467 void cpu_ppc_store_tbl (CPUPPCState *env, uint32_t value)
469 ppc_tb_t *tb_env = env->tb_env;
472 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
473 tb &= 0xFFFFFFFF00000000ULL;
474 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
475 &tb_env->tb_offset, tb | (uint64_t)value);
478 static inline void _cpu_ppc_store_tbu(CPUPPCState *env, uint32_t value)
480 ppc_tb_t *tb_env = env->tb_env;
483 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset);
484 tb &= 0x00000000FFFFFFFFULL;
485 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
486 &tb_env->tb_offset, ((uint64_t)value << 32) | tb);
489 void cpu_ppc_store_tbu (CPUPPCState *env, uint32_t value)
491 _cpu_ppc_store_tbu(env, value);
494 uint64_t cpu_ppc_load_atbl (CPUPPCState *env)
496 ppc_tb_t *tb_env = env->tb_env;
499 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
500 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
505 uint32_t cpu_ppc_load_atbu (CPUPPCState *env)
507 ppc_tb_t *tb_env = env->tb_env;
510 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
511 LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb);
516 void cpu_ppc_store_atbl (CPUPPCState *env, uint32_t value)
518 ppc_tb_t *tb_env = env->tb_env;
521 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
522 tb &= 0xFFFFFFFF00000000ULL;
523 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
524 &tb_env->atb_offset, tb | (uint64_t)value);
527 void cpu_ppc_store_atbu (CPUPPCState *env, uint32_t value)
529 ppc_tb_t *tb_env = env->tb_env;
532 tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset);
533 tb &= 0x00000000FFFFFFFFULL;
534 cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock),
535 &tb_env->atb_offset, ((uint64_t)value << 32) | tb);
538 static void cpu_ppc_tb_stop (CPUPPCState *env)
540 ppc_tb_t *tb_env = env->tb_env;
541 uint64_t tb, atb, vmclk;
543 /* If the time base is already frozen, do nothing */
544 if (tb_env->tb_freq != 0) {
545 vmclk = qemu_get_clock_ns(vm_clock);
546 /* Get the time base */
547 tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset);
548 /* Get the alternate time base */
549 atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset);
550 /* Store the time base value (ie compute the current offset) */
551 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
552 /* Store the alternate time base value (compute the current offset) */
553 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
554 /* Set the time base frequency to zero */
556 /* Now, the time bases are frozen to tb_offset / atb_offset value */
560 static void cpu_ppc_tb_start (CPUPPCState *env)
562 ppc_tb_t *tb_env = env->tb_env;
563 uint64_t tb, atb, vmclk;
565 /* If the time base is not frozen, do nothing */
566 if (tb_env->tb_freq == 0) {
567 vmclk = qemu_get_clock_ns(vm_clock);
568 /* Get the time base from tb_offset */
569 tb = tb_env->tb_offset;
570 /* Get the alternate time base from atb_offset */
571 atb = tb_env->atb_offset;
572 /* Restore the tb frequency from the decrementer frequency */
573 tb_env->tb_freq = tb_env->decr_freq;
574 /* Store the time base value */
575 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb);
576 /* Store the alternate time base value */
577 cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb);
581 static inline uint32_t _cpu_ppc_load_decr(CPUPPCState *env, uint64_t next)
583 ppc_tb_t *tb_env = env->tb_env;
587 diff = next - qemu_get_clock_ns(vm_clock);
589 decr = muldiv64(diff, tb_env->decr_freq, get_ticks_per_sec());
590 } else if (tb_env->flags & PPC_TIMER_BOOKE) {
593 decr = -muldiv64(-diff, tb_env->decr_freq, get_ticks_per_sec());
595 LOG_TB("%s: %08" PRIx32 "\n", __func__, decr);
600 uint32_t cpu_ppc_load_decr (CPUPPCState *env)
602 ppc_tb_t *tb_env = env->tb_env;
605 return env->spr[SPR_DECR];
608 return _cpu_ppc_load_decr(env, tb_env->decr_next);
611 uint32_t cpu_ppc_load_hdecr (CPUPPCState *env)
613 ppc_tb_t *tb_env = env->tb_env;
615 return _cpu_ppc_load_decr(env, tb_env->hdecr_next);
618 uint64_t cpu_ppc_load_purr (CPUPPCState *env)
620 ppc_tb_t *tb_env = env->tb_env;
623 diff = qemu_get_clock_ns(vm_clock) - tb_env->purr_start;
625 return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, get_ticks_per_sec());
628 /* When decrementer expires,
629 * all we need to do is generate or queue a CPU exception
631 static inline void cpu_ppc_decr_excp(CPUPPCState *env)
634 LOG_TB("raise decrementer exception\n");
635 ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
638 static inline void cpu_ppc_hdecr_excp(CPUPPCState *env)
641 LOG_TB("raise decrementer exception\n");
642 ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1);
645 static void __cpu_ppc_store_decr (CPUPPCState *env, uint64_t *nextp,
646 struct QEMUTimer *timer,
647 void (*raise_excp)(CPUPPCState *),
648 uint32_t decr, uint32_t value,
651 ppc_tb_t *tb_env = env->tb_env;
654 LOG_TB("%s: %08" PRIx32 " => %08" PRIx32 "\n", __func__,
658 /* KVM handles decrementer exceptions, we don't need our own timer */
662 now = qemu_get_clock_ns(vm_clock);
663 next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq);
665 next += *nextp - now;
672 qemu_mod_timer(timer, next);
674 /* If we set a negative value and the decrementer was positive, raise an
677 if ((tb_env->flags & PPC_DECR_UNDERFLOW_TRIGGERED)
678 && (value & 0x80000000)
679 && !(decr & 0x80000000)) {
684 static inline void _cpu_ppc_store_decr(CPUPPCState *env, uint32_t decr,
685 uint32_t value, int is_excp)
687 ppc_tb_t *tb_env = env->tb_env;
689 __cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer,
690 &cpu_ppc_decr_excp, decr, value, is_excp);
693 void cpu_ppc_store_decr (CPUPPCState *env, uint32_t value)
695 _cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
698 static void cpu_ppc_decr_cb (void *opaque)
700 _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1);
703 static inline void _cpu_ppc_store_hdecr(CPUPPCState *env, uint32_t hdecr,
704 uint32_t value, int is_excp)
706 ppc_tb_t *tb_env = env->tb_env;
708 if (tb_env->hdecr_timer != NULL) {
709 __cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer,
710 &cpu_ppc_hdecr_excp, hdecr, value, is_excp);
714 void cpu_ppc_store_hdecr (CPUPPCState *env, uint32_t value)
716 _cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0);
719 static void cpu_ppc_hdecr_cb (void *opaque)
721 _cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1);
724 void cpu_ppc_store_purr (CPUPPCState *env, uint64_t value)
726 ppc_tb_t *tb_env = env->tb_env;
728 tb_env->purr_load = value;
729 tb_env->purr_start = qemu_get_clock_ns(vm_clock);
732 static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq)
734 CPUPPCState *env = opaque;
735 ppc_tb_t *tb_env = env->tb_env;
737 tb_env->tb_freq = freq;
738 tb_env->decr_freq = freq;
739 /* There is a bug in Linux 2.4 kernels:
740 * if a decrementer exception is pending when it enables msr_ee at startup,
741 * it's not ready to handle it...
743 _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
744 _cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
745 cpu_ppc_store_purr(env, 0x0000000000000000ULL);
748 /* Set up (once) timebase frequency (in Hz) */
749 clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq)
753 tb_env = g_malloc0(sizeof(ppc_tb_t));
754 env->tb_env = tb_env;
755 tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED;
756 /* Create new timer */
757 tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_decr_cb, env);
759 /* XXX: find a suitable condition to enable the hypervisor decrementer
761 tb_env->hdecr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_hdecr_cb, env);
763 tb_env->hdecr_timer = NULL;
765 cpu_ppc_set_tb_clk(env, freq);
767 return &cpu_ppc_set_tb_clk;
770 /* Specific helpers for POWER & PowerPC 601 RTC */
772 static clk_setup_cb cpu_ppc601_rtc_init (CPUPPCState *env)
774 return cpu_ppc_tb_init(env, 7812500);
778 void cpu_ppc601_store_rtcu (CPUPPCState *env, uint32_t value)
780 _cpu_ppc_store_tbu(env, value);
783 uint32_t cpu_ppc601_load_rtcu (CPUPPCState *env)
785 return _cpu_ppc_load_tbu(env);
788 void cpu_ppc601_store_rtcl (CPUPPCState *env, uint32_t value)
790 cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
793 uint32_t cpu_ppc601_load_rtcl (CPUPPCState *env)
795 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
798 /*****************************************************************************/
799 /* PowerPC 40x timers */
802 typedef struct ppc40x_timer_t ppc40x_timer_t;
803 struct ppc40x_timer_t {
804 uint64_t pit_reload; /* PIT auto-reload value */
805 uint64_t fit_next; /* Tick for next FIT interrupt */
806 struct QEMUTimer *fit_timer;
807 uint64_t wdt_next; /* Tick for next WDT interrupt */
808 struct QEMUTimer *wdt_timer;
810 /* 405 have the PIT, 440 have a DECR. */
811 unsigned int decr_excp;
814 /* Fixed interval timer */
815 static void cpu_4xx_fit_cb (void *opaque)
819 ppc40x_timer_t *ppc40x_timer;
823 tb_env = env->tb_env;
824 ppc40x_timer = tb_env->opaque;
825 now = qemu_get_clock_ns(vm_clock);
826 switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
840 /* Cannot occur, but makes gcc happy */
843 next = now + muldiv64(next, get_ticks_per_sec(), tb_env->tb_freq);
846 qemu_mod_timer(ppc40x_timer->fit_timer, next);
847 env->spr[SPR_40x_TSR] |= 1 << 26;
848 if ((env->spr[SPR_40x_TCR] >> 23) & 0x1)
849 ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
850 LOG_TB("%s: ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__,
851 (int)((env->spr[SPR_40x_TCR] >> 23) & 0x1),
852 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
855 /* Programmable interval timer */
856 static void start_stop_pit (CPUPPCState *env, ppc_tb_t *tb_env, int is_excp)
858 ppc40x_timer_t *ppc40x_timer;
861 ppc40x_timer = tb_env->opaque;
862 if (ppc40x_timer->pit_reload <= 1 ||
863 !((env->spr[SPR_40x_TCR] >> 26) & 0x1) ||
864 (is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) {
866 LOG_TB("%s: stop PIT\n", __func__);
867 qemu_del_timer(tb_env->decr_timer);
869 LOG_TB("%s: start PIT %016" PRIx64 "\n",
870 __func__, ppc40x_timer->pit_reload);
871 now = qemu_get_clock_ns(vm_clock);
872 next = now + muldiv64(ppc40x_timer->pit_reload,
873 get_ticks_per_sec(), tb_env->decr_freq);
875 next += tb_env->decr_next - now;
878 qemu_mod_timer(tb_env->decr_timer, next);
879 tb_env->decr_next = next;
883 static void cpu_4xx_pit_cb (void *opaque)
887 ppc40x_timer_t *ppc40x_timer;
890 tb_env = env->tb_env;
891 ppc40x_timer = tb_env->opaque;
892 env->spr[SPR_40x_TSR] |= 1 << 27;
893 if ((env->spr[SPR_40x_TCR] >> 26) & 0x1)
894 ppc_set_irq(env, ppc40x_timer->decr_excp, 1);
895 start_stop_pit(env, tb_env, 1);
896 LOG_TB("%s: ar %d ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx " "
897 "%016" PRIx64 "\n", __func__,
898 (int)((env->spr[SPR_40x_TCR] >> 22) & 0x1),
899 (int)((env->spr[SPR_40x_TCR] >> 26) & 0x1),
900 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR],
901 ppc40x_timer->pit_reload);
905 static void cpu_4xx_wdt_cb (void *opaque)
909 ppc40x_timer_t *ppc40x_timer;
913 tb_env = env->tb_env;
914 ppc40x_timer = tb_env->opaque;
915 now = qemu_get_clock_ns(vm_clock);
916 switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
930 /* Cannot occur, but makes gcc happy */
933 next = now + muldiv64(next, get_ticks_per_sec(), tb_env->decr_freq);
936 LOG_TB("%s: TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__,
937 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
938 switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
941 qemu_mod_timer(ppc40x_timer->wdt_timer, next);
942 ppc40x_timer->wdt_next = next;
943 env->spr[SPR_40x_TSR] |= 1 << 31;
946 qemu_mod_timer(ppc40x_timer->wdt_timer, next);
947 ppc40x_timer->wdt_next = next;
948 env->spr[SPR_40x_TSR] |= 1 << 30;
949 if ((env->spr[SPR_40x_TCR] >> 27) & 0x1)
950 ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
953 env->spr[SPR_40x_TSR] &= ~0x30000000;
954 env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
955 switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) {
959 case 0x1: /* Core reset */
960 ppc40x_core_reset(env);
962 case 0x2: /* Chip reset */
963 ppc40x_chip_reset(env);
965 case 0x3: /* System reset */
966 ppc40x_system_reset(env);
972 void store_40x_pit (CPUPPCState *env, target_ulong val)
975 ppc40x_timer_t *ppc40x_timer;
977 tb_env = env->tb_env;
978 ppc40x_timer = tb_env->opaque;
979 LOG_TB("%s val" TARGET_FMT_lx "\n", __func__, val);
980 ppc40x_timer->pit_reload = val;
981 start_stop_pit(env, tb_env, 0);
984 target_ulong load_40x_pit (CPUPPCState *env)
986 return cpu_ppc_load_decr(env);
989 static void ppc_40x_set_tb_clk (void *opaque, uint32_t freq)
991 CPUPPCState *env = opaque;
992 ppc_tb_t *tb_env = env->tb_env;
994 LOG_TB("%s set new frequency to %" PRIu32 "\n", __func__,
996 tb_env->tb_freq = freq;
997 tb_env->decr_freq = freq;
998 /* XXX: we should also update all timers */
1001 clk_setup_cb ppc_40x_timers_init (CPUPPCState *env, uint32_t freq,
1002 unsigned int decr_excp)
1005 ppc40x_timer_t *ppc40x_timer;
1007 tb_env = g_malloc0(sizeof(ppc_tb_t));
1008 env->tb_env = tb_env;
1009 tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED;
1010 ppc40x_timer = g_malloc0(sizeof(ppc40x_timer_t));
1011 tb_env->tb_freq = freq;
1012 tb_env->decr_freq = freq;
1013 tb_env->opaque = ppc40x_timer;
1014 LOG_TB("%s freq %" PRIu32 "\n", __func__, freq);
1015 if (ppc40x_timer != NULL) {
1016 /* We use decr timer for PIT */
1017 tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_4xx_pit_cb, env);
1018 ppc40x_timer->fit_timer =
1019 qemu_new_timer_ns(vm_clock, &cpu_4xx_fit_cb, env);
1020 ppc40x_timer->wdt_timer =
1021 qemu_new_timer_ns(vm_clock, &cpu_4xx_wdt_cb, env);
1022 ppc40x_timer->decr_excp = decr_excp;
1025 return &ppc_40x_set_tb_clk;
1028 /*****************************************************************************/
1029 /* Embedded PowerPC Device Control Registers */
1030 typedef struct ppc_dcrn_t ppc_dcrn_t;
1032 dcr_read_cb dcr_read;
1033 dcr_write_cb dcr_write;
1037 /* XXX: on 460, DCR addresses are 32 bits wide,
1038 * using DCRIPR to get the 22 upper bits of the DCR address
1040 #define DCRN_NB 1024
1042 ppc_dcrn_t dcrn[DCRN_NB];
1043 int (*read_error)(int dcrn);
1044 int (*write_error)(int dcrn);
1047 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp)
1051 if (dcrn < 0 || dcrn >= DCRN_NB)
1053 dcr = &dcr_env->dcrn[dcrn];
1054 if (dcr->dcr_read == NULL)
1056 *valp = (*dcr->dcr_read)(dcr->opaque, dcrn);
1061 if (dcr_env->read_error != NULL)
1062 return (*dcr_env->read_error)(dcrn);
1067 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
1071 if (dcrn < 0 || dcrn >= DCRN_NB)
1073 dcr = &dcr_env->dcrn[dcrn];
1074 if (dcr->dcr_write == NULL)
1076 (*dcr->dcr_write)(dcr->opaque, dcrn, val);
1081 if (dcr_env->write_error != NULL)
1082 return (*dcr_env->write_error)(dcrn);
1087 int ppc_dcr_register (CPUPPCState *env, int dcrn, void *opaque,
1088 dcr_read_cb dcr_read, dcr_write_cb dcr_write)
1093 dcr_env = env->dcr_env;
1094 if (dcr_env == NULL)
1096 if (dcrn < 0 || dcrn >= DCRN_NB)
1098 dcr = &dcr_env->dcrn[dcrn];
1099 if (dcr->opaque != NULL ||
1100 dcr->dcr_read != NULL ||
1101 dcr->dcr_write != NULL)
1103 dcr->opaque = opaque;
1104 dcr->dcr_read = dcr_read;
1105 dcr->dcr_write = dcr_write;
1110 int ppc_dcr_init (CPUPPCState *env, int (*read_error)(int dcrn),
1111 int (*write_error)(int dcrn))
1115 dcr_env = g_malloc0(sizeof(ppc_dcr_t));
1116 dcr_env->read_error = read_error;
1117 dcr_env->write_error = write_error;
1118 env->dcr_env = dcr_env;
1123 /*****************************************************************************/
1125 void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
1137 printf("Set loglevel to %04" PRIx32 "\n", val);
1138 cpu_set_log(val | 0x100);
1143 /*****************************************************************************/
1145 static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr)
1147 return (*nvram->read_fn)(nvram->opaque, addr);
1150 static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val)
1152 (*nvram->write_fn)(nvram->opaque, addr, val);
1155 void NVRAM_set_byte (nvram_t *nvram, uint32_t addr, uint8_t value)
1157 nvram_write(nvram, addr, value);
1160 uint8_t NVRAM_get_byte (nvram_t *nvram, uint32_t addr)
1162 return nvram_read(nvram, addr);
1165 void NVRAM_set_word (nvram_t *nvram, uint32_t addr, uint16_t value)
1167 nvram_write(nvram, addr, value >> 8);
1168 nvram_write(nvram, addr + 1, value & 0xFF);
1171 uint16_t NVRAM_get_word (nvram_t *nvram, uint32_t addr)
1175 tmp = nvram_read(nvram, addr) << 8;
1176 tmp |= nvram_read(nvram, addr + 1);
1181 void NVRAM_set_lword (nvram_t *nvram, uint32_t addr, uint32_t value)
1183 nvram_write(nvram, addr, value >> 24);
1184 nvram_write(nvram, addr + 1, (value >> 16) & 0xFF);
1185 nvram_write(nvram, addr + 2, (value >> 8) & 0xFF);
1186 nvram_write(nvram, addr + 3, value & 0xFF);
1189 uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr)
1193 tmp = nvram_read(nvram, addr) << 24;
1194 tmp |= nvram_read(nvram, addr + 1) << 16;
1195 tmp |= nvram_read(nvram, addr + 2) << 8;
1196 tmp |= nvram_read(nvram, addr + 3);
1201 void NVRAM_set_string (nvram_t *nvram, uint32_t addr,
1202 const char *str, uint32_t max)
1206 for (i = 0; i < max && str[i] != '\0'; i++) {
1207 nvram_write(nvram, addr + i, str[i]);
1209 nvram_write(nvram, addr + i, str[i]);
1210 nvram_write(nvram, addr + max - 1, '\0');
1213 int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max)
1217 memset(dst, 0, max);
1218 for (i = 0; i < max; i++) {
1219 dst[i] = NVRAM_get_byte(nvram, addr + i);
1227 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
1230 uint16_t pd, pd1, pd2;
1235 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
1236 tmp ^= (pd1 << 3) | (pd1 << 8);
1237 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
1242 static uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count)
1245 uint16_t crc = 0xFFFF;
1250 for (i = 0; i != count; i++) {
1251 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
1254 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
1260 #define CMDLINE_ADDR 0x017ff000
1262 int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
1264 uint32_t RAM_size, int boot_device,
1265 uint32_t kernel_image, uint32_t kernel_size,
1266 const char *cmdline,
1267 uint32_t initrd_image, uint32_t initrd_size,
1268 uint32_t NVRAM_image,
1269 int width, int height, int depth)
1273 /* Set parameters for Open Hack'Ware BIOS */
1274 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
1275 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
1276 NVRAM_set_word(nvram, 0x14, NVRAM_size);
1277 NVRAM_set_string(nvram, 0x20, arch, 16);
1278 NVRAM_set_lword(nvram, 0x30, RAM_size);
1279 NVRAM_set_byte(nvram, 0x34, boot_device);
1280 NVRAM_set_lword(nvram, 0x38, kernel_image);
1281 NVRAM_set_lword(nvram, 0x3C, kernel_size);
1283 /* XXX: put the cmdline in NVRAM too ? */
1284 pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR, cmdline);
1285 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
1286 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
1288 NVRAM_set_lword(nvram, 0x40, 0);
1289 NVRAM_set_lword(nvram, 0x44, 0);
1291 NVRAM_set_lword(nvram, 0x48, initrd_image);
1292 NVRAM_set_lword(nvram, 0x4C, initrd_size);
1293 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
1295 NVRAM_set_word(nvram, 0x54, width);
1296 NVRAM_set_word(nvram, 0x56, height);
1297 NVRAM_set_word(nvram, 0x58, depth);
1298 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
1299 NVRAM_set_word(nvram, 0xFC, crc);