1 /*
2 * arch/ppc/platforms/setup.c
3 *
4 * PowerPC version
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 *
7 * Adapted for Power Macintosh by Paul Mackerras
8 * Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au)
9 *
10 * Derived from "arch/alpha/kernel/setup.c"
11 * Copyright (C) 1995 Linus Torvalds
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
17 *
18 */
19
20 /*
21 * bootup setup stuff..
22 */
23
24 #include <linux/config.h>
25 #include <linux/init.h>
26 #include <linux/errno.h>
27 #include <linux/sched.h>
28 #include <linux/kernel.h>
29 #include <linux/mm.h>
30 #include <linux/stddef.h>
31 #include <linux/unistd.h>
32 #include <linux/ptrace.h>
33 #include <linux/slab.h>
34 #include <linux/user.h>
35 #include <linux/a.out.h>
36 #include <linux/tty.h>
37 #include <linux/string.h>
38 #include <linux/delay.h>
39 #include <linux/ioport.h>
40 #include <linux/major.h>
41 #include <linux/blk.h>
42 #include <linux/vt_kern.h>
43 #include <linux/console.h>
44 #include <linux/ide.h>
45 #include <linux/pci.h>
46 #include <linux/adb.h>
47 #include <linux/cuda.h>
48 #include <linux/pmu.h>
49 #include <linux/irq.h>
50 #include <linux/seq_file.h>
51 #include <linux/blkdev.h>
52 #include <linux/genhd.h>
53
54 #include <asm/processor.h>
55 #include <asm/sections.h>
56 #include <asm/prom.h>
57 #include <asm/system.h>
58 #include <asm/pgtable.h>
59 #include <asm/bitops.h>
60 #include <asm/io.h>
61 #include <asm/pci-bridge.h>
62 #include <asm/ohare.h>
63 #include <asm/mediabay.h>
64 #include <asm/machdep.h>
65 #include <asm/keyboard.h>
66 #include <asm/dma.h>
67 #include <asm/bootx.h>
68 #include <asm/cputable.h>
69 #include <asm/btext.h>
70 #include <asm/pmac_feature.h>
71 #include <asm/time.h>
72
73 #include "pmac_pic.h"
74 #include "mem_pieces.h"
75 #include "scsi.h" /* sd_find_target */
76 #include "sd.h"
77 #include "mac.h"
78
79 extern long pmac_time_init(void);
80 extern unsigned long pmac_get_rtc_time(void);
81 extern int pmac_set_rtc_time(unsigned long nowtime);
82 extern void pmac_read_rtc_time(void);
83 extern void pmac_calibrate_decr(void);
84 extern void pmac_pcibios_fixup(void);
85 extern void pmac_find_bridges(void);
86 extern ide_ioreg_t pmac_ide_get_base(int index);
87 extern void pmac_ide_init_hwif_ports(hw_regs_t *hw,
88 ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq);
89
90 extern int mackbd_setkeycode(unsigned int scancode, unsigned int keycode);
91 extern int mackbd_getkeycode(unsigned int scancode);
92 extern int mackbd_translate(unsigned char keycode, unsigned char *keycodep,
93 char raw_mode);
94 extern char mackbd_unexpected_up(unsigned char keycode);
95 extern void mackbd_leds(unsigned char leds);
96 extern void __init mackbd_init_hw(void);
97 extern int mac_hid_kbd_translate(unsigned char scancode, unsigned char *keycode,
98 char raw_mode);
99 extern char mac_hid_kbd_unexpected_up(unsigned char keycode);
100 extern void mac_hid_init_hw(void);
101 extern unsigned char mac_hid_kbd_sysrq_xlate[];
102 extern unsigned char pckbd_sysrq_xlate[];
103 extern unsigned char mackbd_sysrq_xlate[];
104 extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
105 extern int pckbd_getkeycode(unsigned int scancode);
106 extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
107 char raw_mode);
108 extern char pckbd_unexpected_up(unsigned char keycode);
109 extern int keyboard_sends_linux_keycodes;
110 extern void pmac_nvram_update(void);
111
112 extern int pmac_pci_enable_device_hook(struct pci_dev *dev, int initial);
113 extern void pmac_pcibios_after_init(void);
114
115 struct device_node *memory_node;
116
117 unsigned char drive_info;
118
119 int ppc_override_l2cr = 0;
120 int ppc_override_l2cr_value;
121 int has_l2cache = 0;
122
123 static int current_root_goodness = -1;
124
125 extern char saved_command_line[];
126
127 extern int pmac_newworld;
128
129 #define DEFAULT_ROOT_DEVICE 0x0801 /* sda1 - slightly silly choice */
130
131 extern void zs_kgdb_hook(int tty_num);
132 static void ohare_init(void);
133 #ifdef CONFIG_BOOTX_TEXT
134 void pmac_progress(char *s, unsigned short hex);
135 #endif
136
137 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
138
139 #ifdef CONFIG_SMP
140 extern struct smp_ops_t psurge_smp_ops;
141 extern struct smp_ops_t core99_smp_ops;
142 #endif /* CONFIG_SMP */
143
144 /*
145 * Assume here that all clock rates are the same in a
146 * smp system. -- Cort
147 */
148 int __openfirmware
of_show_percpuinfo(struct seq_file * m,int i)149 of_show_percpuinfo(struct seq_file *m, int i)
150 {
151 struct device_node *cpu_node;
152 int *fp, s;
153
154 cpu_node = find_type_devices("cpu");
155 if (!cpu_node)
156 return 0;
157 for (s = 0; s < i && cpu_node->next; s++)
158 cpu_node = cpu_node->next;
159 fp = (int *) get_property(cpu_node, "clock-frequency", NULL);
160 if (fp)
161 seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000);
162 return 0;
163 }
164
165 int __pmac
pmac_show_cpuinfo(struct seq_file * m)166 pmac_show_cpuinfo(struct seq_file *m)
167 {
168 struct device_node *np;
169 char *pp;
170 int plen;
171 int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
172 NULL, PMAC_MB_INFO_MODEL, 0);
173 unsigned int mbflags = (unsigned int)pmac_call_feature(PMAC_FTR_GET_MB_INFO,
174 NULL, PMAC_MB_INFO_FLAGS, 0);
175 char* mbname;
176
177 if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, (int)&mbname) != 0)
178 mbname = "Unknown";
179
180 /* find motherboard type */
181 seq_printf(m, "machine\t\t: ");
182 np = find_devices("device-tree");
183 if (np != NULL) {
184 pp = (char *) get_property(np, "model", NULL);
185 if (pp != NULL)
186 seq_printf(m, "%s\n", pp);
187 else
188 seq_printf(m, "PowerMac\n");
189 pp = (char *) get_property(np, "compatible", &plen);
190 if (pp != NULL) {
191 seq_printf(m, "motherboard\t:");
192 while (plen > 0) {
193 int l = strlen(pp) + 1;
194 seq_printf(m, " %s", pp);
195 plen -= l;
196 pp += l;
197 }
198 seq_printf(m, "\n");
199 }
200 } else
201 seq_printf(m, "PowerMac\n");
202
203 /* print parsed model */
204 seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
205 seq_printf(m, "pmac flags\t: %08x\n", mbflags);
206
207 /* find l2 cache info */
208 np = find_devices("l2-cache");
209 if (np == 0)
210 np = find_type_devices("cache");
211 if (np != 0) {
212 unsigned int *ic = (unsigned int *)
213 get_property(np, "i-cache-size", NULL);
214 unsigned int *dc = (unsigned int *)
215 get_property(np, "d-cache-size", NULL);
216 seq_printf(m, "L2 cache\t:");
217 has_l2cache = 1;
218 if (get_property(np, "cache-unified", NULL) != 0 && dc) {
219 seq_printf(m, " %dK unified", *dc / 1024);
220 } else {
221 if (ic)
222 seq_printf(m, " %dK instruction", *ic / 1024);
223 if (dc)
224 seq_printf(m, "%s %dK data",
225 (ic? " +": ""), *dc / 1024);
226 }
227 pp = get_property(np, "ram-type", NULL);
228 if (pp)
229 seq_printf(m, " %s", pp);
230 seq_printf(m, "\n");
231 }
232
233 /* find ram info */
234 np = find_devices("memory");
235 if (np != 0) {
236 int n;
237 struct reg_property *reg = (struct reg_property *)
238 get_property(np, "reg", &n);
239
240 if (reg != 0) {
241 unsigned long total = 0;
242
243 for (n /= sizeof(struct reg_property); n > 0; --n)
244 total += (reg++)->size;
245 seq_printf(m, "memory\t\t: %luMB\n", total >> 20);
246 }
247 }
248
249 /* Checks "l2cr-value" property in the registry */
250 np = find_devices("cpus");
251 if (np == 0)
252 np = find_type_devices("cpu");
253 if (np != 0) {
254 unsigned int *l2cr = (unsigned int *)
255 get_property(np, "l2cr-value", NULL);
256 if (l2cr != 0) {
257 seq_printf(m, "l2cr override\t: 0x%x\n", *l2cr);
258 }
259 }
260
261 /* Indicate newworld/oldworld */
262 seq_printf(m, "pmac-generation\t: %s\n",
263 pmac_newworld ? "NewWorld" : "OldWorld");
264
265
266 return 0;
267 }
268
269 #ifdef CONFIG_VT
270 /*
271 * Dummy mksound function that does nothing.
272 * The real one is in the dmasound driver.
273 */
274 static void __pmac
pmac_mksound(unsigned int hz,unsigned int ticks)275 pmac_mksound(unsigned int hz, unsigned int ticks)
276 {
277 }
278 #endif /* CONFIG_VT */
279
280 static volatile u32 *sysctrl_regs;
281
282 void __init
pmac_setup_arch(void)283 pmac_setup_arch(void)
284 {
285 struct device_node *cpu;
286 int *fp;
287 unsigned long pvr;
288
289 pvr = PVR_VER(mfspr(PVR));
290
291 /* Set loops_per_jiffy to a half-way reasonable value,
292 for use until calibrate_delay gets called. */
293 cpu = find_type_devices("cpu");
294 if (cpu != 0) {
295 fp = (int *) get_property(cpu, "clock-frequency", NULL);
296 if (fp != 0) {
297 if (pvr == 4 || pvr >= 8)
298 /* 604, G3, G4 etc. */
299 loops_per_jiffy = *fp / HZ;
300 else
301 /* 601, 603, etc. */
302 loops_per_jiffy = *fp / (2*HZ);
303 } else
304 loops_per_jiffy = 50000000 / HZ;
305 }
306
307 /* this area has the CPU identification register
308 and some registers used by smp boards */
309 sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
310 ohare_init();
311
312 /* Lookup PCI hosts */
313 pmac_find_bridges();
314
315 /* Checks "l2cr-value" property in the registry */
316 if (cur_cpu_spec[0]->cpu_features & CPU_FTR_L2CR) {
317 struct device_node *np = find_devices("cpus");
318 if (np == 0)
319 np = find_type_devices("cpu");
320 if (np != 0) {
321 unsigned int *l2cr = (unsigned int *)
322 get_property(np, "l2cr-value", NULL);
323 if (l2cr != 0) {
324 ppc_override_l2cr = 1;
325 ppc_override_l2cr_value = *l2cr;
326 _set_L2CR(0);
327 _set_L2CR(ppc_override_l2cr_value);
328 }
329 }
330 }
331
332 if (ppc_override_l2cr)
333 printk(KERN_INFO "L2CR overriden (0x%x), backside cache is %s\n",
334 ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000)
335 ? "enabled" : "disabled");
336
337 #ifdef CONFIG_KGDB
338 zs_kgdb_hook(0);
339 #endif
340
341 #ifdef CONFIG_ADB_CUDA
342 find_via_cuda();
343 #else
344 if (find_devices("via-cuda")) {
345 printk("WARNING ! Your machine is Cuda based but your kernel\n");
346 printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n");
347 }
348 #endif
349 #ifdef CONFIG_ADB_PMU
350 find_via_pmu();
351 #else
352 if (find_devices("via-pmu")) {
353 printk("WARNING ! Your machine is PMU based but your kernel\n");
354 printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
355 }
356 #endif
357 #ifdef CONFIG_NVRAM
358 pmac_nvram_init();
359 #endif
360 #ifdef CONFIG_DUMMY_CONSOLE
361 conswitchp = &dummy_con;
362 #endif
363 #ifdef CONFIG_VT
364 kd_mksound = pmac_mksound;
365 #endif
366 #ifdef CONFIG_BLK_DEV_INITRD
367 if (initrd_start)
368 ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
369 else
370 #endif
371 ROOT_DEV = to_kdev_t(DEFAULT_ROOT_DEVICE);
372
373 #ifdef CONFIG_SMP
374 /* Check for Core99 */
375 if (find_devices("uni-n"))
376 ppc_md.smp_ops = &core99_smp_ops;
377 else
378 ppc_md.smp_ops = &psurge_smp_ops;
379 #endif /* CONFIG_SMP */
380
381 pci_create_OF_bus_map();
382 }
383
ohare_init(void)384 static void __init ohare_init(void)
385 {
386 /*
387 * Turn on the L2 cache.
388 * We assume that we have a PSX memory controller iff
389 * we have an ohare I/O controller.
390 */
391 if (find_devices("ohare") != NULL) {
392 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
393 if (sysctrl_regs[4] & 0x10)
394 sysctrl_regs[4] |= 0x04000020;
395 else
396 sysctrl_regs[4] |= 0x04000000;
397 if(has_l2cache)
398 printk(KERN_INFO "Level 2 cache enabled\n");
399 }
400 }
401 }
402
403 extern char *bootpath;
404 extern char *bootdevice;
405 void *boot_host;
406 int boot_target;
407 int boot_part;
408 extern kdev_t boot_dev;
409
410 void __init
pmac_init2(void)411 pmac_init2(void)
412 {
413 #ifdef CONFIG_ADB_PMU
414 via_pmu_start();
415 #endif
416 #ifdef CONFIG_ADB_CUDA
417 via_cuda_start();
418 #endif
419 #ifdef CONFIG_PMAC_PBOOK
420 media_bay_init();
421 #endif
422 pmac_feature_late_init();
423 }
424
425 /* Borrowed from fs/partition/check.c */
426 static unsigned char* __init
read_one_block(struct block_device * bdev,unsigned long n,struct page ** v)427 read_one_block(struct block_device *bdev, unsigned long n, struct page **v)
428 {
429 struct address_space *mapping = bdev->bd_inode->i_mapping;
430 int sect = PAGE_CACHE_SIZE / 512;
431 struct page *page;
432
433 page = read_cache_page(mapping, n/sect,
434 (filler_t *)mapping->a_ops->readpage, NULL);
435 if (!IS_ERR(page)) {
436 wait_on_page(page);
437 if (!Page_Uptodate(page))
438 goto fail;
439 if (PageError(page))
440 goto fail;
441 *v = page;
442 return (unsigned char *)page_address(page) + 512 * (n % sect);
443 fail:
444 page_cache_release(page);
445 }
446 *v = NULL;
447 return NULL;
448 }
449
450 #ifdef CONFIG_SCSI
451 void __init
note_scsi_host(struct device_node * node,void * host)452 note_scsi_host(struct device_node *node, void *host)
453 {
454 int l;
455 char *p;
456
457 l = strlen(node->full_name);
458 if (bootpath != NULL && bootdevice != NULL
459 && strncmp(node->full_name, bootdevice, l) == 0
460 && (bootdevice[l] == '/' || bootdevice[l] == 0)) {
461 boot_host = host;
462 /*
463 * There's a bug in OF 1.0.5. (Why am I not surprised.)
464 * If you pass a path like scsi/sd@1:0 to canon, it returns
465 * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0
466 * That is, the scsi target number doesn't get preserved.
467 * So we pick the target number out of bootpath and use that.
468 */
469 p = strstr(bootpath, "/sd@");
470 if (p != NULL) {
471 p += 4;
472 boot_target = simple_strtoul(p, NULL, 10);
473 p = strchr(p, ':');
474 if (p != NULL)
475 boot_part = simple_strtoul(p + 1, NULL, 10);
476 }
477 }
478 }
479 #endif /* CONFIG_SCSI */
480
481 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
482 kdev_t __init
find_ide_boot(void)483 find_ide_boot(void)
484 {
485 char *p;
486 int n;
487 kdev_t __init pmac_find_ide_boot(char *bootdevice, int n);
488
489 if (bootdevice == NULL)
490 return 0;
491 p = strrchr(bootdevice, '/');
492 if (p == NULL)
493 return 0;
494 n = p - bootdevice;
495
496 return pmac_find_ide_boot(bootdevice, n);
497 }
498 #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
499
500 void __init
find_boot_device(void)501 find_boot_device(void)
502 {
503 #if defined(CONFIG_SCSI) && defined(CONFIG_BLK_DEV_SD)
504 if (boot_host != NULL) {
505 boot_dev = sd_find_target(boot_host, boot_target);
506 if (boot_dev != 0)
507 return;
508 }
509 #endif
510 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
511 boot_dev = find_ide_boot();
512 #endif
513 }
514
515 static void __init
check_bootable_part(kdev_t dev,int blk,struct mac_partition * part)516 check_bootable_part(kdev_t dev, int blk, struct mac_partition *part)
517 {
518 int goodness = 0;
519
520 macpart_fix_string(part->processor, 16);
521 macpart_fix_string(part->name, 32);
522 macpart_fix_string(part->type, 32);
523
524 if ((be32_to_cpu(part->status) & MAC_STATUS_BOOTABLE)
525 && strcasecmp(part->processor, "powerpc") == 0)
526 goodness++;
527
528 if (strcasecmp(part->type, "Apple_UNIX_SVR2") == 0
529 || (strnicmp(part->type, "Linux", 5) == 0
530 && strcasecmp(part->type, "Linux_swap") != 0)) {
531 int i, l;
532
533 goodness++;
534 l = strlen(part->name);
535 if (strcmp(part->name, "/") == 0)
536 goodness++;
537 for (i = 0; i <= l - 4; ++i) {
538 if (strnicmp(part->name + i, "root",
539 4) == 0) {
540 goodness += 2;
541 break;
542 }
543 }
544 if (strnicmp(part->name, "swap", 4) == 0)
545 goodness--;
546 }
547
548 if (goodness > current_root_goodness) {
549 ROOT_DEV = MKDEV(MAJOR(dev), MINOR(dev) + blk);
550 current_root_goodness = goodness;
551 }
552 }
553
554 static void __init
check_bootable_disk(kdev_t dev,struct block_device * bdev)555 check_bootable_disk(kdev_t dev, struct block_device *bdev)
556 {
557 struct mac_partition *part;
558 struct mac_driver_desc *md;
559 struct page* pg;
560 unsigned secsize, blocks_in_map, blk;
561 unsigned char* data;
562
563 /* Check driver descriptor */
564 md = (struct mac_driver_desc *) read_one_block(bdev, 0, &pg);
565 if (!md)
566 return;
567 if (be16_to_cpu(md->signature) != MAC_DRIVER_MAGIC)
568 goto fail;
569 secsize = be16_to_cpu(md->block_size);
570 page_cache_release(pg);
571
572 /* Check if it looks like a mac partition map */
573 data = read_one_block(bdev, secsize/512, &pg);
574 if (!data)
575 goto fail;
576 part = (struct mac_partition *) (data + secsize%512);
577 if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC)
578 goto fail;
579
580 /* Iterate the partition map */
581 blocks_in_map = be32_to_cpu(part->map_count);
582 for (blk = 1; blk <= blocks_in_map; ++blk) {
583 int pos = blk * secsize;
584 page_cache_release(pg);
585 data = read_one_block(bdev, pos/512, &pg);
586 if (!data)
587 break;
588 part = (struct mac_partition *) (data + pos%512);
589 if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC)
590 break;
591 check_bootable_part(dev, blk, part);
592 }
593 fail:
594 if (pg)
595 page_cache_release(pg);
596 }
597
598 static int __init
walk_bootable(struct gendisk * hd,void * data)599 walk_bootable(struct gendisk *hd, void *data)
600 {
601 int drive;
602
603 for (drive=0; drive<hd->nr_real; drive++) {
604 kdev_t dev;
605 struct block_device *bdev;
606 int rc;
607
608 dev = MKDEV(hd->major, drive << hd->minor_shift);
609 if (boot_dev && boot_dev != dev)
610 continue;
611 bdev = bdget(kdev_t_to_nr(dev));
612 if (bdev == NULL)
613 continue;
614 rc = blkdev_get(bdev, FMODE_READ, 0, BDEV_RAW);
615 if (rc == 0) {
616 check_bootable_disk(dev, bdev);
617 blkdev_put(bdev, BDEV_RAW);
618 }
619 }
620
621 return 0;
622 }
623
624 void __init
pmac_discover_root(void)625 pmac_discover_root(void)
626 {
627 char* p;
628
629 /* Check if root devices already got selected by other ways */
630 if (ROOT_DEV != to_kdev_t(DEFAULT_ROOT_DEVICE))
631 return;
632 p = strstr(saved_command_line, "root=");
633 if (p != NULL && (p == saved_command_line || p[-1] == ' '))
634 return;
635
636 /* Find the device used for booting if we can */
637 find_boot_device();
638
639 /* Try to locate a partition */
640 walk_gendisk(walk_bootable, NULL);
641 }
642
643 void __pmac
pmac_restart(char * cmd)644 pmac_restart(char *cmd)
645 {
646 #ifdef CONFIG_ADB_CUDA
647 struct adb_request req;
648 #endif /* CONFIG_ADB_CUDA */
649
650 #ifdef CONFIG_NVRAM
651 pmac_nvram_update();
652 #endif
653
654 switch (sys_ctrler) {
655 #ifdef CONFIG_ADB_CUDA
656 case SYS_CTRLER_CUDA:
657 cuda_request(&req, NULL, 2, CUDA_PACKET,
658 CUDA_RESET_SYSTEM);
659 for (;;)
660 cuda_poll();
661 break;
662 #endif /* CONFIG_ADB_CUDA */
663 #ifdef CONFIG_ADB_PMU
664 case SYS_CTRLER_PMU:
665 pmu_restart();
666 break;
667 #endif /* CONFIG_ADB_PMU */
668 default: ;
669 }
670 }
671
672 void __pmac
pmac_power_off(void)673 pmac_power_off(void)
674 {
675 #ifdef CONFIG_ADB_CUDA
676 struct adb_request req;
677 #endif /* CONFIG_ADB_CUDA */
678
679 #ifdef CONFIG_NVRAM
680 pmac_nvram_update();
681 #endif
682
683 switch (sys_ctrler) {
684 #ifdef CONFIG_ADB_CUDA
685 case SYS_CTRLER_CUDA:
686 cuda_request(&req, NULL, 2, CUDA_PACKET,
687 CUDA_POWERDOWN);
688 for (;;)
689 cuda_poll();
690 break;
691 #endif /* CONFIG_ADB_CUDA */
692 #ifdef CONFIG_ADB_PMU
693 case SYS_CTRLER_PMU:
694 pmu_shutdown();
695 break;
696 #endif /* CONFIG_ADB_PMU */
697 default: ;
698 }
699 }
700
701 void __pmac
pmac_halt(void)702 pmac_halt(void)
703 {
704 pmac_power_off();
705 }
706
707
708 /*
709 * Read in a property describing some pieces of memory.
710 */
711
712 static int __init
get_mem_prop(char * name,struct mem_pieces * mp)713 get_mem_prop(char *name, struct mem_pieces *mp)
714 {
715 struct reg_property *rp;
716 int i, s;
717 unsigned int *ip;
718 int nac = prom_n_addr_cells(memory_node);
719 int nsc = prom_n_size_cells(memory_node);
720
721 ip = (unsigned int *) get_property(memory_node, name, &s);
722 if (ip == NULL) {
723 printk(KERN_ERR "error: couldn't get %s property on /memory\n",
724 name);
725 return 0;
726 }
727 s /= (nsc + nac) * 4;
728 rp = mp->regions;
729 for (i = 0; i < s; ++i, ip += nac+nsc) {
730 if (nac >= 2 && ip[nac-2] != 0)
731 continue;
732 rp->address = ip[nac-1];
733 if (nsc >= 2 && ip[nac+nsc-2] != 0)
734 rp->size = ~0U;
735 else
736 rp->size = ip[nac+nsc-1];
737 ++rp;
738 }
739 mp->n_regions = rp - mp->regions;
740
741 /* Make sure the pieces are sorted. */
742 mem_pieces_sort(mp);
743 mem_pieces_coalesce(mp);
744 return 1;
745 }
746
747 /*
748 * On systems with Open Firmware, collect information about
749 * physical RAM and which pieces are already in use.
750 * At this point, we have (at least) the first 8MB mapped with a BAT.
751 * Our text, data, bss use something over 1MB, starting at 0.
752 * Open Firmware may be using 1MB at the 4MB point.
753 */
754 unsigned long __init
pmac_find_end_of_memory(void)755 pmac_find_end_of_memory(void)
756 {
757 unsigned long a, total;
758 struct mem_pieces phys_mem;
759
760 /*
761 * Find out where physical memory is, and check that it
762 * starts at 0 and is contiguous. It seems that RAM is
763 * always physically contiguous on Power Macintoshes.
764 *
765 * Supporting discontiguous physical memory isn't hard,
766 * it just makes the virtual <-> physical mapping functions
767 * more complicated (or else you end up wasting space
768 * in mem_map).
769 */
770 memory_node = find_devices("memory");
771 if (memory_node == NULL || !get_mem_prop("reg", &phys_mem)
772 || phys_mem.n_regions == 0)
773 panic("No RAM??");
774 a = phys_mem.regions[0].address;
775 if (a != 0)
776 panic("RAM doesn't start at physical address 0");
777 total = phys_mem.regions[0].size;
778
779 if (phys_mem.n_regions > 1) {
780 printk("RAM starting at 0x%x is not contiguous\n",
781 phys_mem.regions[1].address);
782 printk("Using RAM from 0 to 0x%lx\n", total-1);
783 }
784
785 return total;
786 }
787
788 void __init
select_adb_keyboard(void)789 select_adb_keyboard(void)
790 {
791 #ifdef CONFIG_VT
792 #ifdef CONFIG_INPUT
793 ppc_md.kbd_init_hw = mac_hid_init_hw;
794 ppc_md.kbd_translate = mac_hid_kbd_translate;
795 ppc_md.kbd_unexpected_up = mac_hid_kbd_unexpected_up;
796 ppc_md.kbd_setkeycode = 0;
797 ppc_md.kbd_getkeycode = 0;
798 ppc_md.kbd_leds = 0;
799 #ifdef CONFIG_MAGIC_SYSRQ
800 #ifdef CONFIG_MAC_ADBKEYCODES
801 if (!keyboard_sends_linux_keycodes) {
802 ppc_md.ppc_kbd_sysrq_xlate = mac_hid_kbd_sysrq_xlate;
803 SYSRQ_KEY = 0x69;
804 } else
805 #endif /* CONFIG_MAC_ADBKEYCODES */
806 {
807 ppc_md.ppc_kbd_sysrq_xlate = pckbd_sysrq_xlate;
808 SYSRQ_KEY = 0x54;
809 }
810 #endif /* CONFIG_MAGIC_SYSRQ */
811 #elif defined(CONFIG_ADB_KEYBOARD)
812 ppc_md.kbd_setkeycode = mackbd_setkeycode;
813 ppc_md.kbd_getkeycode = mackbd_getkeycode;
814 ppc_md.kbd_translate = mackbd_translate;
815 ppc_md.kbd_unexpected_up = mackbd_unexpected_up;
816 ppc_md.kbd_leds = mackbd_leds;
817 ppc_md.kbd_init_hw = mackbd_init_hw;
818 #ifdef CONFIG_MAGIC_SYSRQ
819 ppc_md.ppc_kbd_sysrq_xlate = mackbd_sysrq_xlate;
820 SYSRQ_KEY = 0x69;
821 #endif /* CONFIG_MAGIC_SYSRQ */
822 #endif /* CONFIG_INPUT_ADBHID/CONFIG_ADB_KEYBOARD */
823 #endif /* CONFIG_VT */
824 }
825
826 void __init
pmac_init(unsigned long r3,unsigned long r4,unsigned long r5,unsigned long r6,unsigned long r7)827 pmac_init(unsigned long r3, unsigned long r4, unsigned long r5,
828 unsigned long r6, unsigned long r7)
829 {
830 /* isa_io_base gets set in pmac_find_bridges */
831 isa_mem_base = PMAC_ISA_MEM_BASE;
832 pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
833 ISA_DMA_THRESHOLD = ~0L;
834 DMA_MODE_READ = 1;
835 DMA_MODE_WRITE = 2;
836
837 ppc_md.setup_arch = pmac_setup_arch;
838 ppc_md.show_cpuinfo = pmac_show_cpuinfo;
839 ppc_md.show_percpuinfo = of_show_percpuinfo;
840 ppc_md.irq_cannonicalize = NULL;
841 ppc_md.init_IRQ = pmac_pic_init;
842 ppc_md.get_irq = pmac_get_irq; /* Changed later on ... */
843 ppc_md.init = pmac_init2;
844
845 ppc_md.pcibios_fixup = pmac_pcibios_fixup;
846 ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook;
847 ppc_md.pcibios_after_init = pmac_pcibios_after_init;
848
849 ppc_md.discover_root = pmac_discover_root;
850
851 ppc_md.restart = pmac_restart;
852 ppc_md.power_off = pmac_power_off;
853 ppc_md.halt = pmac_halt;
854
855 ppc_md.time_init = pmac_time_init;
856 ppc_md.set_rtc_time = pmac_set_rtc_time;
857 ppc_md.get_rtc_time = pmac_get_rtc_time;
858 ppc_md.calibrate_decr = pmac_calibrate_decr;
859
860 ppc_md.find_end_of_memory = pmac_find_end_of_memory;
861
862 ppc_md.feature_call = pmac_do_feature_call;
863
864 select_adb_keyboard();
865
866 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
867 #ifdef CONFIG_BLK_DEV_IDE_PMAC
868 ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports;
869 ppc_ide_md.default_io_base = pmac_ide_get_base;
870 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
871 #endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
872
873 #ifdef CONFIG_BOOTX_TEXT
874 ppc_md.progress = pmac_progress;
875 #endif /* CONFIG_BOOTX_TEXT */
876
877 if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
878
879 }
880
881 #ifdef CONFIG_BOOTX_TEXT
882 void __init
pmac_progress(char * s,unsigned short hex)883 pmac_progress(char *s, unsigned short hex)
884 {
885 if (boot_text_mapped) {
886 btext_drawstring(s);
887 btext_drawchar('\n');
888 }
889 }
890 #endif /* CONFIG_BOOTX_TEXT */
891