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
32 void ppc_set_irq (CPUState *env, int n_IRQ, int level)
35 env->pending_interrupts |= 1 << n_IRQ;
36 cpu_interrupt(env, CPU_INTERRUPT_HARD);
38 env->pending_interrupts &= ~(1 << n_IRQ);
39 if (env->pending_interrupts == 0)
40 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
42 #if defined(PPC_DEBUG_IRQ)
43 printf("%s: %p n_IRQ %d level %d => pending %08x req %08x\n", __func__,
44 env, n_IRQ, level, env->pending_interrupts, env->interrupt_request);
48 /* PowerPC 6xx / 7xx internal IRQ controller */
49 static void ppc6xx_set_irq (void *opaque, int pin, int level)
51 CPUState *env = opaque;
54 #if defined(PPC_DEBUG_IRQ)
55 printf("%s: env %p pin %d level %d\n", __func__, env, pin, level);
57 cur_level = (env->irq_input_state >> pin) & 1;
58 /* Don't generate spurious events */
59 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
61 case PPC6xx_INPUT_INT:
62 /* Level sensitive - active high */
63 #if defined(PPC_DEBUG_IRQ)
64 printf("%s: set the external IRQ state to %d\n", __func__, level);
66 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
68 case PPC6xx_INPUT_SMI:
69 /* Level sensitive - active high */
70 #if defined(PPC_DEBUG_IRQ)
71 printf("%s: set the SMI IRQ state to %d\n", __func__, level);
73 ppc_set_irq(env, PPC_INTERRUPT_SMI, level);
75 case PPC6xx_INPUT_MCP:
76 /* Negative edge sensitive */
77 /* XXX: TODO: actual reaction may depends on HID0 status
78 * 603/604/740/750: check HID0[EMCP]
80 if (cur_level == 1 && level == 0) {
81 #if defined(PPC_DEBUG_IRQ)
82 printf("%s: raise machine check state\n", __func__);
84 ppc_set_irq(env, PPC_INTERRUPT_MCK, 1);
87 case PPC6xx_INPUT_CKSTP_IN:
88 /* Level sensitive - active low */
89 /* XXX: TODO: relay the signal to CKSTP_OUT pin */
91 #if defined(PPC_DEBUG_IRQ)
92 printf("%s: stop the CPU\n", __func__);
96 #if defined(PPC_DEBUG_IRQ)
97 printf("%s: restart the CPU\n", __func__);
102 case PPC6xx_INPUT_HRESET:
103 /* Level sensitive - active low */
106 #if defined(PPC_DEBUG_IRQ)
107 printf("%s: reset the CPU\n", __func__);
113 case PPC6xx_INPUT_SRESET:
114 #if defined(PPC_DEBUG_IRQ)
115 printf("%s: set the RESET IRQ state to %d\n", __func__, level);
117 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
120 /* Unknown pin - do nothing */
121 #if defined(PPC_DEBUG_IRQ)
122 printf("%s: unknown IRQ pin %d\n", __func__, pin);
127 env->irq_input_state |= 1 << pin;
129 env->irq_input_state &= ~(1 << pin);
133 void ppc6xx_irq_init (CPUState *env)
135 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env, 6);
138 /* PowerPC 405 internal IRQ controller */
139 static void ppc405_set_irq (void *opaque, int pin, int level)
141 CPUState *env = opaque;
144 #if defined(PPC_DEBUG_IRQ)
145 printf("%s: env %p pin %d level %d\n", __func__, env, pin, level);
147 cur_level = (env->irq_input_state >> pin) & 1;
148 /* Don't generate spurious events */
149 if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) {
151 case PPC405_INPUT_RESET_SYS:
152 /* XXX: TODO: reset all peripherals */
154 case PPC405_INPUT_RESET_CHIP:
155 /* XXX: TODO: reset on-chip peripherals */
157 case PPC405_INPUT_RESET_CORE:
158 /* XXX: TODO: update DBSR[MRR] */
161 #if defined(PPC_DEBUG_IRQ)
162 printf("%s: reset the CPU\n", __func__);
168 case PPC405_INPUT_CINT:
169 /* Level sensitive - active high */
170 #if defined(PPC_DEBUG_IRQ)
171 printf("%s: set the critical IRQ state to %d\n", __func__, level);
174 ppc_set_irq(env, PPC_INTERRUPT_RESET, level);
176 case PPC405_INPUT_INT:
177 /* Level sensitive - active high */
178 #if defined(PPC_DEBUG_IRQ)
179 printf("%s: set the external IRQ state to %d\n", __func__, level);
181 ppc_set_irq(env, PPC_INTERRUPT_EXT, level);
183 case PPC405_INPUT_HALT:
184 /* Level sensitive - active low */
186 #if defined(PPC_DEBUG_IRQ)
187 printf("%s: stop the CPU\n", __func__);
191 #if defined(PPC_DEBUG_IRQ)
192 printf("%s: restart the CPU\n", __func__);
197 case PPC405_INPUT_DEBUG:
198 /* Level sensitive - active high */
199 #if defined(PPC_DEBUG_IRQ)
200 printf("%s: set the external IRQ state to %d\n", __func__, level);
202 ppc_set_irq(env, EXCP_40x_DEBUG, level);
205 /* Unknown pin - do nothing */
206 #if defined(PPC_DEBUG_IRQ)
207 printf("%s: unknown IRQ pin %d\n", __func__, pin);
212 env->irq_input_state |= 1 << pin;
214 env->irq_input_state &= ~(1 << pin);
218 void ppc405_irq_init (CPUState *env)
220 printf("%s\n", __func__);
221 env->irq_inputs = (void **)qemu_allocate_irqs(&ppc405_set_irq, env, 7);
224 /*****************************************************************************/
225 /* PowerPC time base and decrementer emulation */
229 /* Time base management */
230 int64_t tb_offset; /* Compensation */
231 uint32_t tb_freq; /* TB frequency */
232 /* Decrementer management */
233 uint64_t decr_next; /* Tick for next decr interrupt */
234 struct QEMUTimer *decr_timer;
238 static inline uint64_t cpu_ppc_get_tb (ppc_tb_t *tb_env)
240 /* TB time in tb periods */
241 return muldiv64(qemu_get_clock(vm_clock) + tb_env->tb_offset,
242 tb_env->tb_freq, ticks_per_sec);
245 uint32_t cpu_ppc_load_tbl (CPUState *env)
247 ppc_tb_t *tb_env = env->tb_env;
250 tb = cpu_ppc_get_tb(tb_env);
253 static int last_time;
256 if (last_time != now) {
258 printf("%s: tb=0x%016lx %d %08lx\n",
259 __func__, tb, now, tb_env->tb_offset);
264 return tb & 0xFFFFFFFF;
267 uint32_t cpu_ppc_load_tbu (CPUState *env)
269 ppc_tb_t *tb_env = env->tb_env;
272 tb = cpu_ppc_get_tb(tb_env);
274 printf("%s: tb=0x%016lx\n", __func__, tb);
280 static void cpu_ppc_store_tb (ppc_tb_t *tb_env, uint64_t value)
282 tb_env->tb_offset = muldiv64(value, ticks_per_sec, tb_env->tb_freq)
283 - qemu_get_clock(vm_clock);
285 printf("%s: tb=0x%016lx offset=%08x\n", __func__, value);
289 void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
291 ppc_tb_t *tb_env = env->tb_env;
293 cpu_ppc_store_tb(tb_env,
294 ((uint64_t)value << 32) | cpu_ppc_load_tbl(env));
297 void cpu_ppc_store_tbl (CPUState *env, uint32_t value)
299 ppc_tb_t *tb_env = env->tb_env;
301 cpu_ppc_store_tb(tb_env,
302 ((uint64_t)cpu_ppc_load_tbu(env) << 32) | value);
305 uint32_t cpu_ppc_load_decr (CPUState *env)
307 ppc_tb_t *tb_env = env->tb_env;
311 diff = tb_env->decr_next - qemu_get_clock(vm_clock);
313 decr = muldiv64(diff, tb_env->tb_freq, ticks_per_sec);
315 decr = -muldiv64(-diff, tb_env->tb_freq, ticks_per_sec);
316 #if defined(DEBUG_TB)
317 printf("%s: 0x%08x\n", __func__, decr);
323 /* When decrementer expires,
324 * all we need to do is generate or queue a CPU exception
326 static inline void cpu_ppc_decr_excp (CPUState *env)
330 printf("raise decrementer exception\n");
332 ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
335 static void _cpu_ppc_store_decr (CPUState *env, uint32_t decr,
336 uint32_t value, int is_excp)
338 ppc_tb_t *tb_env = env->tb_env;
342 printf("%s: 0x%08x => 0x%08x\n", __func__, decr, value);
344 now = qemu_get_clock(vm_clock);
345 next = now + muldiv64(value, ticks_per_sec, tb_env->tb_freq);
347 next += tb_env->decr_next - now;
350 tb_env->decr_next = next;
352 qemu_mod_timer(tb_env->decr_timer, next);
353 /* If we set a negative value and the decrementer was positive,
354 * raise an exception.
356 if ((value & 0x80000000) && !(decr & 0x80000000))
357 cpu_ppc_decr_excp(env);
360 void cpu_ppc_store_decr (CPUState *env, uint32_t value)
362 _cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
365 static void cpu_ppc_decr_cb (void *opaque)
367 _cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1);
370 /* Set up (once) timebase frequency (in Hz) */
371 ppc_tb_t *cpu_ppc_tb_init (CPUState *env, uint32_t freq)
375 tb_env = qemu_mallocz(sizeof(ppc_tb_t));
378 env->tb_env = tb_env;
379 if (tb_env->tb_freq == 0 || 1) {
380 tb_env->tb_freq = freq;
381 /* Create new timer */
383 qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env);
384 /* There is a bug in Linux 2.4 kernels:
385 * if a decrementer exception is pending when it enables msr_ee,
386 * it's not ready to handle it...
388 _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
394 /* Specific helpers for POWER & PowerPC 601 RTC */
395 ppc_tb_t *cpu_ppc601_rtc_init (CPUState *env)
397 return cpu_ppc_tb_init(env, 7812500);
400 void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
401 __attribute__ (( alias ("cpu_ppc_store_tbu") ));
403 uint32_t cpu_ppc601_load_rtcu (CPUState *env)
404 __attribute__ (( alias ("cpu_ppc_load_tbu") ));
406 void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
408 cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
411 uint32_t cpu_ppc601_load_rtcl (CPUState *env)
413 return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
416 /*****************************************************************************/
417 /* Embedded PowerPC timers */
420 typedef struct ppcemb_timer_t ppcemb_timer_t;
421 struct ppcemb_timer_t {
422 uint64_t pit_reload; /* PIT auto-reload value */
423 uint64_t fit_next; /* Tick for next FIT interrupt */
424 struct QEMUTimer *fit_timer;
425 uint64_t wdt_next; /* Tick for next WDT interrupt */
426 struct QEMUTimer *wdt_timer;
429 /* Fixed interval timer */
430 static void cpu_4xx_fit_cb (void *opaque)
434 ppcemb_timer_t *ppcemb_timer;
438 tb_env = env->tb_env;
439 ppcemb_timer = tb_env->opaque;
440 now = qemu_get_clock(vm_clock);
441 switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) {
455 /* Cannot occur, but makes gcc happy */
458 next = now + muldiv64(next, ticks_per_sec, tb_env->tb_freq);
461 qemu_mod_timer(ppcemb_timer->fit_timer, next);
462 tb_env->decr_next = next;
463 env->spr[SPR_40x_TSR] |= 1 << 26;
464 if ((env->spr[SPR_40x_TCR] >> 23) & 0x1)
465 ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
467 fprintf(logfile, "%s: ir %d TCR %08x TSR %08x\n", __func__,
468 (env->spr[SPR_40x_TCR] >> 23) & 0x1,
469 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
473 /* Programmable interval timer */
474 static void cpu_4xx_pit_cb (void *opaque)
478 ppcemb_timer_t *ppcemb_timer;
482 tb_env = env->tb_env;
483 ppcemb_timer = tb_env->opaque;
484 now = qemu_get_clock(vm_clock);
485 if ((env->spr[SPR_40x_TCR] >> 22) & 0x1) {
487 next = now + muldiv64(ppcemb_timer->pit_reload,
488 ticks_per_sec, tb_env->tb_freq);
491 qemu_mod_timer(tb_env->decr_timer, next);
492 tb_env->decr_next = next;
494 env->spr[SPR_40x_TSR] |= 1 << 27;
495 if ((env->spr[SPR_40x_TCR] >> 26) & 0x1)
496 ppc_set_irq(env, PPC_INTERRUPT_PIT, 1);
498 fprintf(logfile, "%s: ar %d ir %d TCR %08x TSR %08x %08lx\n", __func__,
499 (env->spr[SPR_40x_TCR] >> 22) & 0x1,
500 (env->spr[SPR_40x_TCR] >> 26) & 0x1,
501 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR],
502 ppcemb_timer->pit_reload);
507 static void cpu_4xx_wdt_cb (void *opaque)
511 ppcemb_timer_t *ppcemb_timer;
515 tb_env = env->tb_env;
516 ppcemb_timer = tb_env->opaque;
517 now = qemu_get_clock(vm_clock);
518 switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) {
532 /* Cannot occur, but makes gcc happy */
535 next = now + muldiv64(next, ticks_per_sec, tb_env->tb_freq);
539 fprintf(logfile, "%s: TCR %08x TSR %08x\n", __func__,
540 env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]);
542 switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) {
545 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
546 ppcemb_timer->wdt_next = next;
547 env->spr[SPR_40x_TSR] |= 1 << 31;
550 qemu_mod_timer(ppcemb_timer->wdt_timer, next);
551 ppcemb_timer->wdt_next = next;
552 env->spr[SPR_40x_TSR] |= 1 << 30;
553 if ((env->spr[SPR_40x_TCR] >> 27) & 0x1)
554 ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
557 env->spr[SPR_40x_TSR] &= ~0x30000000;
558 env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
559 switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) {
563 case 0x1: /* Core reset */
564 case 0x2: /* Chip reset */
565 case 0x3: /* System reset */
566 qemu_system_reset_request();
572 void store_40x_pit (CPUState *env, target_ulong val)
575 ppcemb_timer_t *ppcemb_timer;
578 tb_env = env->tb_env;
579 ppcemb_timer = tb_env->opaque;
581 fprintf(logfile, "%s %p %p\n", __func__, tb_env, ppcemb_timer);
582 ppcemb_timer->pit_reload = val;
586 fprintf(logfile, "%s: stop PIT\n", __func__);
587 qemu_del_timer(tb_env->decr_timer);
590 fprintf(logfile, "%s: start PIT 0x%08x\n", __func__, val);
591 now = qemu_get_clock(vm_clock);
592 next = now + muldiv64(val, ticks_per_sec, tb_env->tb_freq);
595 qemu_mod_timer(tb_env->decr_timer, next);
596 tb_env->decr_next = next;
600 target_ulong load_40x_pit (CPUState *env)
602 return cpu_ppc_load_decr(env);
605 void store_booke_tsr (CPUState *env, target_ulong val)
607 env->spr[SPR_40x_TSR] = val & 0xFC000000;
610 void store_booke_tcr (CPUState *env, target_ulong val)
612 /* We don't update timers now. Maybe we should... */
613 env->spr[SPR_40x_TCR] = val & 0xFF800000;
616 void ppc_emb_timers_init (CPUState *env)
619 ppcemb_timer_t *ppcemb_timer;
621 tb_env = env->tb_env;
622 ppcemb_timer = qemu_mallocz(sizeof(ppcemb_timer_t));
623 tb_env->opaque = ppcemb_timer;
625 fprintf(logfile, "%s %p %p\n", __func__, tb_env, ppcemb_timer);
626 if (ppcemb_timer != NULL) {
627 /* We use decr timer for PIT */
628 tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_4xx_pit_cb, env);
629 ppcemb_timer->fit_timer =
630 qemu_new_timer(vm_clock, &cpu_4xx_fit_cb, env);
631 ppcemb_timer->wdt_timer =
632 qemu_new_timer(vm_clock, &cpu_4xx_wdt_cb, env);
636 /*****************************************************************************/
637 /* Embedded PowerPC Device Control Registers */
638 typedef struct ppc_dcrn_t ppc_dcrn_t;
640 dcr_read_cb dcr_read;
641 dcr_write_cb dcr_write;
647 ppc_dcrn_t dcrn[DCRN_NB];
648 int (*read_error)(int dcrn);
649 int (*write_error)(int dcrn);
652 int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp)
656 if (dcrn < 0 || dcrn >= DCRN_NB)
658 dcr = &dcr_env->dcrn[dcrn];
659 if (dcr->dcr_read == NULL)
661 *valp = (*dcr->dcr_read)(dcr->opaque, dcrn);
666 if (dcr_env->read_error != NULL)
667 return (*dcr_env->read_error)(dcrn);
672 int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val)
676 if (dcrn < 0 || dcrn >= DCRN_NB)
678 dcr = &dcr_env->dcrn[dcrn];
679 if (dcr->dcr_write == NULL)
681 (*dcr->dcr_write)(dcr->opaque, dcrn, val);
686 if (dcr_env->write_error != NULL)
687 return (*dcr_env->write_error)(dcrn);
692 int ppc_dcr_register (CPUState *env, int dcrn, void *opaque,
693 dcr_read_cb dcr_read, dcr_write_cb dcr_write)
698 dcr_env = env->dcr_env;
701 if (dcrn < 0 || dcrn >= DCRN_NB)
703 dcr = &dcr_env->dcrn[dcrn];
704 if (dcr->opaque != NULL ||
705 dcr->dcr_read != NULL ||
706 dcr->dcr_write != NULL)
708 dcr->opaque = opaque;
709 dcr->dcr_read = dcr_read;
710 dcr->dcr_write = dcr_write;
715 int ppc_dcr_init (CPUState *env, int (*read_error)(int dcrn),
716 int (*write_error)(int dcrn))
720 dcr_env = qemu_mallocz(sizeof(ppc_dcr_t));
723 dcr_env->read_error = read_error;
724 dcr_env->write_error = write_error;
725 env->dcr_env = dcr_env;
732 /*****************************************************************************/
733 /* Handle system reset (for now, just stop emulation) */
734 void cpu_ppc_reset (CPUState *env)
736 printf("Reset asked... Stop emulation\n");
741 /*****************************************************************************/
743 void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val)
755 printf("Set loglevel to %04x\n", val);
756 cpu_set_log(val | 0x100);
761 /*****************************************************************************/
763 void NVRAM_set_byte (m48t59_t *nvram, uint32_t addr, uint8_t value)
765 m48t59_write(nvram, addr, value);
768 uint8_t NVRAM_get_byte (m48t59_t *nvram, uint32_t addr)
770 return m48t59_read(nvram, addr);
773 void NVRAM_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
775 m48t59_write(nvram, addr, value >> 8);
776 m48t59_write(nvram, addr + 1, value & 0xFF);
779 uint16_t NVRAM_get_word (m48t59_t *nvram, uint32_t addr)
783 tmp = m48t59_read(nvram, addr) << 8;
784 tmp |= m48t59_read(nvram, addr + 1);
788 void NVRAM_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value)
790 m48t59_write(nvram, addr, value >> 24);
791 m48t59_write(nvram, addr + 1, (value >> 16) & 0xFF);
792 m48t59_write(nvram, addr + 2, (value >> 8) & 0xFF);
793 m48t59_write(nvram, addr + 3, value & 0xFF);
796 uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr)
800 tmp = m48t59_read(nvram, addr) << 24;
801 tmp |= m48t59_read(nvram, addr + 1) << 16;
802 tmp |= m48t59_read(nvram, addr + 2) << 8;
803 tmp |= m48t59_read(nvram, addr + 3);
808 void NVRAM_set_string (m48t59_t *nvram, uint32_t addr,
809 const unsigned char *str, uint32_t max)
813 for (i = 0; i < max && str[i] != '\0'; i++) {
814 m48t59_write(nvram, addr + i, str[i]);
816 m48t59_write(nvram, addr + max - 1, '\0');
819 int NVRAM_get_string (m48t59_t *nvram, uint8_t *dst, uint16_t addr, int max)
824 for (i = 0; i < max; i++) {
825 dst[i] = NVRAM_get_byte(nvram, addr + i);
833 static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
836 uint16_t pd, pd1, pd2;
841 pd2 = ((pd >> 4) & 0x000F) ^ pd1;
842 tmp ^= (pd1 << 3) | (pd1 << 8);
843 tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);
848 uint16_t NVRAM_compute_crc (m48t59_t *nvram, uint32_t start, uint32_t count)
851 uint16_t crc = 0xFFFF;
856 for (i = 0; i != count; i++) {
857 crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
860 crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
866 #define CMDLINE_ADDR 0x017ff000
868 int PPC_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
869 const unsigned char *arch,
870 uint32_t RAM_size, int boot_device,
871 uint32_t kernel_image, uint32_t kernel_size,
873 uint32_t initrd_image, uint32_t initrd_size,
874 uint32_t NVRAM_image,
875 int width, int height, int depth)
879 /* Set parameters for Open Hack'Ware BIOS */
880 NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
881 NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */
882 NVRAM_set_word(nvram, 0x14, NVRAM_size);
883 NVRAM_set_string(nvram, 0x20, arch, 16);
884 NVRAM_set_lword(nvram, 0x30, RAM_size);
885 NVRAM_set_byte(nvram, 0x34, boot_device);
886 NVRAM_set_lword(nvram, 0x38, kernel_image);
887 NVRAM_set_lword(nvram, 0x3C, kernel_size);
889 /* XXX: put the cmdline in NVRAM too ? */
890 strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
891 NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
892 NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
894 NVRAM_set_lword(nvram, 0x40, 0);
895 NVRAM_set_lword(nvram, 0x44, 0);
897 NVRAM_set_lword(nvram, 0x48, initrd_image);
898 NVRAM_set_lword(nvram, 0x4C, initrd_size);
899 NVRAM_set_lword(nvram, 0x50, NVRAM_image);
901 NVRAM_set_word(nvram, 0x54, width);
902 NVRAM_set_word(nvram, 0x56, height);
903 NVRAM_set_word(nvram, 0x58, depth);
904 crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
905 NVRAM_set_word(nvram, 0xFC, crc);