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Linux-2.6.12-rc2
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / ppc / kernel / setup.c
1 /*
2 * Common prep/pmac/chrp boot and setup code.
3 */
4
5 #include <linux/config.h>
6 #include <linux/module.h>
7 #include <linux/string.h>
8 #include <linux/sched.h>
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/reboot.h>
12 #include <linux/delay.h>
13 #include <linux/initrd.h>
14 #include <linux/ide.h>
15 #include <linux/tty.h>
16 #include <linux/bootmem.h>
17 #include <linux/seq_file.h>
18 #include <linux/root_dev.h>
19 #include <linux/cpu.h>
20 #include <linux/console.h>
21
22 #include <asm/residual.h>
23 #include <asm/io.h>
24 #include <asm/prom.h>
25 #include <asm/processor.h>
26 #include <asm/pgtable.h>
27 #include <asm/bootinfo.h>
28 #include <asm/setup.h>
29 #include <asm/amigappc.h>
30 #include <asm/smp.h>
31 #include <asm/elf.h>
32 #include <asm/cputable.h>
33 #include <asm/bootx.h>
34 #include <asm/btext.h>
35 #include <asm/machdep.h>
36 #include <asm/uaccess.h>
37 #include <asm/system.h>
38 #include <asm/pmac_feature.h>
39 #include <asm/sections.h>
40 #include <asm/nvram.h>
41 #include <asm/xmon.h>
42 #include <asm/ocp.h>
43
44 #if defined(CONFIG_85xx) || defined(CONFIG_83xx)
45 #include <asm/ppc_sys.h>
46 #endif
47
48 #if defined CONFIG_KGDB
49 #include <asm/kgdb.h>
50 #endif
51
52 extern void platform_init(unsigned long r3, unsigned long r4,
53 unsigned long r5, unsigned long r6, unsigned long r7);
54 extern void bootx_init(unsigned long r4, unsigned long phys);
55 extern void identify_cpu(unsigned long offset, unsigned long cpu);
56 extern void do_cpu_ftr_fixups(unsigned long offset);
57 extern void reloc_got2(unsigned long offset);
58
59 extern void ppc6xx_idle(void);
60 extern void power4_idle(void);
61
62 extern boot_infos_t *boot_infos;
63 struct ide_machdep_calls ppc_ide_md;
64 char *sysmap;
65 unsigned long sysmap_size;
66
67 /* Used with the BI_MEMSIZE bootinfo parameter to store the memory
68 size value reported by the boot loader. */
69 unsigned long boot_mem_size;
70
71 unsigned long ISA_DMA_THRESHOLD;
72 unsigned long DMA_MODE_READ, DMA_MODE_WRITE;
73
74 #ifdef CONFIG_PPC_MULTIPLATFORM
75 int _machine = 0;
76
77 extern void prep_init(unsigned long r3, unsigned long r4,
78 unsigned long r5, unsigned long r6, unsigned long r7);
79 extern void pmac_init(unsigned long r3, unsigned long r4,
80 unsigned long r5, unsigned long r6, unsigned long r7);
81 extern void chrp_init(unsigned long r3, unsigned long r4,
82 unsigned long r5, unsigned long r6, unsigned long r7);
83 #endif /* CONFIG_PPC_MULTIPLATFORM */
84
85 #ifdef CONFIG_MAGIC_SYSRQ
86 unsigned long SYSRQ_KEY = 0x54;
87 #endif /* CONFIG_MAGIC_SYSRQ */
88
89 #ifdef CONFIG_VGA_CONSOLE
90 unsigned long vgacon_remap_base;
91 #endif
92
93 struct machdep_calls ppc_md;
94
95 /*
96 * These are used in binfmt_elf.c to put aux entries on the stack
97 * for each elf executable being started.
98 */
99 int dcache_bsize;
100 int icache_bsize;
101 int ucache_bsize;
102
103 #if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_FB_VGA16) || \
104 defined(CONFIG_FB_VGA16_MODULE) || defined(CONFIG_FB_VESA)
105 struct screen_info screen_info = {
106 0, 25, /* orig-x, orig-y */
107 0, /* unused */
108 0, /* orig-video-page */
109 0, /* orig-video-mode */
110 80, /* orig-video-cols */
111 0,0,0, /* ega_ax, ega_bx, ega_cx */
112 25, /* orig-video-lines */
113 1, /* orig-video-isVGA */
114 16 /* orig-video-points */
115 };
116 #endif /* CONFIG_VGA_CONSOLE || CONFIG_FB_VGA16 || CONFIG_FB_VESA */
117
118 void machine_restart(char *cmd)
119 {
120 #ifdef CONFIG_NVRAM
121 nvram_sync();
122 #endif
123 ppc_md.restart(cmd);
124 }
125
126 EXPORT_SYMBOL(machine_restart);
127
128 void machine_power_off(void)
129 {
130 #ifdef CONFIG_NVRAM
131 nvram_sync();
132 #endif
133 ppc_md.power_off();
134 }
135
136 EXPORT_SYMBOL(machine_power_off);
137
138 void machine_halt(void)
139 {
140 #ifdef CONFIG_NVRAM
141 nvram_sync();
142 #endif
143 ppc_md.halt();
144 }
145
146 EXPORT_SYMBOL(machine_halt);
147
148 void (*pm_power_off)(void) = machine_power_off;
149
150 #ifdef CONFIG_TAU
151 extern u32 cpu_temp(unsigned long cpu);
152 extern u32 cpu_temp_both(unsigned long cpu);
153 #endif /* CONFIG_TAU */
154
155 int show_cpuinfo(struct seq_file *m, void *v)
156 {
157 int i = (int) v - 1;
158 int err = 0;
159 unsigned int pvr;
160 unsigned short maj, min;
161 unsigned long lpj;
162
163 if (i >= NR_CPUS) {
164 /* Show summary information */
165 #ifdef CONFIG_SMP
166 unsigned long bogosum = 0;
167 for (i = 0; i < NR_CPUS; ++i)
168 if (cpu_online(i))
169 bogosum += cpu_data[i].loops_per_jiffy;
170 seq_printf(m, "total bogomips\t: %lu.%02lu\n",
171 bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
172 #endif /* CONFIG_SMP */
173
174 if (ppc_md.show_cpuinfo != NULL)
175 err = ppc_md.show_cpuinfo(m);
176 return err;
177 }
178
179 #ifdef CONFIG_SMP
180 if (!cpu_online(i))
181 return 0;
182 pvr = cpu_data[i].pvr;
183 lpj = cpu_data[i].loops_per_jiffy;
184 #else
185 pvr = mfspr(SPRN_PVR);
186 lpj = loops_per_jiffy;
187 #endif
188
189 seq_printf(m, "processor\t: %d\n", i);
190 seq_printf(m, "cpu\t\t: ");
191
192 if (cur_cpu_spec[i]->pvr_mask)
193 seq_printf(m, "%s", cur_cpu_spec[i]->cpu_name);
194 else
195 seq_printf(m, "unknown (%08x)", pvr);
196 #ifdef CONFIG_ALTIVEC
197 if (cur_cpu_spec[i]->cpu_features & CPU_FTR_ALTIVEC)
198 seq_printf(m, ", altivec supported");
199 #endif
200 seq_printf(m, "\n");
201
202 #ifdef CONFIG_TAU
203 if (cur_cpu_spec[i]->cpu_features & CPU_FTR_TAU) {
204 #ifdef CONFIG_TAU_AVERAGE
205 /* more straightforward, but potentially misleading */
206 seq_printf(m, "temperature \t: %u C (uncalibrated)\n",
207 cpu_temp(i));
208 #else
209 /* show the actual temp sensor range */
210 u32 temp;
211 temp = cpu_temp_both(i);
212 seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
213 temp & 0xff, temp >> 16);
214 #endif
215 }
216 #endif /* CONFIG_TAU */
217
218 if (ppc_md.show_percpuinfo != NULL) {
219 err = ppc_md.show_percpuinfo(m, i);
220 if (err)
221 return err;
222 }
223
224 switch (PVR_VER(pvr)) {
225 case 0x0020: /* 403 family */
226 maj = PVR_MAJ(pvr) + 1;
227 min = PVR_MIN(pvr);
228 break;
229 case 0x1008: /* 740P/750P ?? */
230 maj = ((pvr >> 8) & 0xFF) - 1;
231 min = pvr & 0xFF;
232 break;
233 case 0x8083: /* e300 */
234 maj = PVR_MAJ(pvr);
235 min = PVR_MIN(pvr);
236 break;
237 case 0x8020: /* e500 */
238 maj = PVR_MAJ(pvr);
239 min = PVR_MIN(pvr);
240 break;
241 default:
242 maj = (pvr >> 8) & 0xFF;
243 min = pvr & 0xFF;
244 break;
245 }
246
247 seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
248 maj, min, PVR_VER(pvr), PVR_REV(pvr));
249
250 seq_printf(m, "bogomips\t: %lu.%02lu\n",
251 lpj / (500000/HZ), (lpj / (5000/HZ)) % 100);
252
253 #if defined(CONFIG_85xx) || defined(CONFIG_83xx)
254 if (cur_ppc_sys_spec->ppc_sys_name)
255 seq_printf(m, "chipset\t\t: %s\n",
256 cur_ppc_sys_spec->ppc_sys_name);
257 #endif
258
259 #ifdef CONFIG_SMP
260 seq_printf(m, "\n");
261 #endif
262
263 return 0;
264 }
265
266 static void *c_start(struct seq_file *m, loff_t *pos)
267 {
268 int i = *pos;
269
270 return i <= NR_CPUS? (void *) (i + 1): NULL;
271 }
272
273 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
274 {
275 ++*pos;
276 return c_start(m, pos);
277 }
278
279 static void c_stop(struct seq_file *m, void *v)
280 {
281 }
282
283 struct seq_operations cpuinfo_op = {
284 .start =c_start,
285 .next = c_next,
286 .stop = c_stop,
287 .show = show_cpuinfo,
288 };
289
290 /*
291 * We're called here very early in the boot. We determine the machine
292 * type and call the appropriate low-level setup functions.
293 * -- Cort <cort@fsmlabs.com>
294 *
295 * Note that the kernel may be running at an address which is different
296 * from the address that it was linked at, so we must use RELOC/PTRRELOC
297 * to access static data (including strings). -- paulus
298 */
299 __init
300 unsigned long
301 early_init(int r3, int r4, int r5)
302 {
303 unsigned long phys;
304 unsigned long offset = reloc_offset();
305
306 /* Default */
307 phys = offset + KERNELBASE;
308
309 /* First zero the BSS -- use memset, some arches don't have
310 * caches on yet */
311 memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
312
313 /*
314 * Identify the CPU type and fix up code sections
315 * that depend on which cpu we have.
316 */
317 identify_cpu(offset, 0);
318 do_cpu_ftr_fixups(offset);
319
320 #if defined(CONFIG_PPC_MULTIPLATFORM)
321 reloc_got2(offset);
322
323 /* If we came here from BootX, clear the screen,
324 * set up some pointers and return. */
325 if ((r3 == 0x426f6f58) && (r5 == 0))
326 bootx_init(r4, phys);
327
328 /*
329 * don't do anything on prep
330 * for now, don't use bootinfo because it breaks yaboot 0.5
331 * and assume that if we didn't find a magic number, we have OF
332 */
333 else if (*(unsigned long *)(0) != 0xdeadc0de)
334 phys = prom_init(r3, r4, (prom_entry)r5);
335
336 reloc_got2(-offset);
337 #endif
338
339 return phys;
340 }
341
342 #ifdef CONFIG_PPC_OF
343 /*
344 * Assume here that all clock rates are the same in a
345 * smp system. -- Cort
346 */
347 int __openfirmware
348 of_show_percpuinfo(struct seq_file *m, int i)
349 {
350 struct device_node *cpu_node;
351 u32 *fp;
352 int s;
353
354 cpu_node = find_type_devices("cpu");
355 if (!cpu_node)
356 return 0;
357 for (s = 0; s < i && cpu_node->next; s++)
358 cpu_node = cpu_node->next;
359 fp = (u32 *)get_property(cpu_node, "clock-frequency", NULL);
360 if (fp)
361 seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000);
362 return 0;
363 }
364
365 void __init
366 intuit_machine_type(void)
367 {
368 char *model;
369 struct device_node *root;
370
371 /* ask the OF info if we're a chrp or pmac */
372 root = find_path_device("/");
373 if (root != 0) {
374 /* assume pmac unless proven to be chrp -- Cort */
375 _machine = _MACH_Pmac;
376 model = get_property(root, "device_type", NULL);
377 if (model && !strncmp("chrp", model, 4))
378 _machine = _MACH_chrp;
379 else {
380 model = get_property(root, "model", NULL);
381 if (model && !strncmp(model, "IBM", 3))
382 _machine = _MACH_chrp;
383 }
384 }
385 }
386 #endif
387
388 #ifdef CONFIG_PPC_MULTIPLATFORM
389 /*
390 * The PPC_MULTIPLATFORM version of platform_init...
391 */
392 void __init
393 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
394 unsigned long r6, unsigned long r7)
395 {
396 #ifdef CONFIG_BOOTX_TEXT
397 if (boot_text_mapped) {
398 btext_clearscreen();
399 btext_welcome();
400 }
401 #endif
402
403 parse_bootinfo(find_bootinfo());
404
405 /* if we didn't get any bootinfo telling us what we are... */
406 if (_machine == 0) {
407 /* prep boot loader tells us if we're prep or not */
408 if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) )
409 _machine = _MACH_prep;
410 }
411
412 /* not much more to do here, if prep */
413 if (_machine == _MACH_prep) {
414 prep_init(r3, r4, r5, r6, r7);
415 return;
416 }
417
418 /* prom_init has already been called from __start */
419 if (boot_infos)
420 relocate_nodes();
421
422 /* If we aren't PReP, we can find out if we're Pmac
423 * or CHRP with this. */
424 if (_machine == 0)
425 intuit_machine_type();
426
427 /* finish_device_tree may need _machine defined. */
428 finish_device_tree();
429
430 /*
431 * If we were booted via quik, r3 points to the physical
432 * address of the command-line parameters.
433 * If we were booted from an xcoff image (i.e. netbooted or
434 * booted from floppy), we get the command line from the
435 * bootargs property of the /chosen node.
436 * If an initial ramdisk is present, r3 and r4
437 * are used for initrd_start and initrd_size,
438 * otherwise they contain 0xdeadbeef.
439 */
440 if (r3 >= 0x4000 && r3 < 0x800000 && r4 == 0) {
441 strlcpy(cmd_line, (char *)r3 + KERNELBASE,
442 sizeof(cmd_line));
443 } else if (boot_infos != 0) {
444 /* booted by BootX - check for ramdisk */
445 if (boot_infos->kernelParamsOffset != 0)
446 strlcpy(cmd_line, (char *) boot_infos
447 + boot_infos->kernelParamsOffset,
448 sizeof(cmd_line));
449 #ifdef CONFIG_BLK_DEV_INITRD
450 if (boot_infos->ramDisk) {
451 initrd_start = (unsigned long) boot_infos
452 + boot_infos->ramDisk;
453 initrd_end = initrd_start + boot_infos->ramDiskSize;
454 initrd_below_start_ok = 1;
455 }
456 #endif
457 } else {
458 struct device_node *chosen;
459 char *p;
460
461 #ifdef CONFIG_BLK_DEV_INITRD
462 if (r3 && r4 && r4 != 0xdeadbeef) {
463 if (r3 < KERNELBASE)
464 r3 += KERNELBASE;
465 initrd_start = r3;
466 initrd_end = r3 + r4;
467 ROOT_DEV = Root_RAM0;
468 initrd_below_start_ok = 1;
469 }
470 #endif
471 chosen = find_devices("chosen");
472 if (chosen != NULL) {
473 p = get_property(chosen, "bootargs", NULL);
474 if (p && *p) {
475 strlcpy(cmd_line, p, sizeof(cmd_line));
476 }
477 }
478 }
479 #ifdef CONFIG_ADB
480 if (strstr(cmd_line, "adb_sync")) {
481 extern int __adb_probe_sync;
482 __adb_probe_sync = 1;
483 }
484 #endif /* CONFIG_ADB */
485
486 switch (_machine) {
487 case _MACH_Pmac:
488 pmac_init(r3, r4, r5, r6, r7);
489 break;
490 case _MACH_chrp:
491 chrp_init(r3, r4, r5, r6, r7);
492 break;
493 }
494 }
495
496 #ifdef CONFIG_SERIAL_CORE_CONSOLE
497 extern char *of_stdout_device;
498
499 static int __init set_preferred_console(void)
500 {
501 struct device_node *prom_stdout;
502 char *name;
503 int offset;
504
505 if (of_stdout_device == NULL)
506 return -ENODEV;
507
508 /* The user has requested a console so this is already set up. */
509 if (strstr(saved_command_line, "console="))
510 return -EBUSY;
511
512 prom_stdout = find_path_device(of_stdout_device);
513 if (!prom_stdout)
514 return -ENODEV;
515
516 name = (char *)get_property(prom_stdout, "name", NULL);
517 if (!name)
518 return -ENODEV;
519
520 if (strcmp(name, "serial") == 0) {
521 int i;
522 u32 *reg = (u32 *)get_property(prom_stdout, "reg", &i);
523 if (i > 8) {
524 switch (reg[1]) {
525 case 0x3f8:
526 offset = 0;
527 break;
528 case 0x2f8:
529 offset = 1;
530 break;
531 case 0x898:
532 offset = 2;
533 break;
534 case 0x890:
535 offset = 3;
536 break;
537 default:
538 /* We dont recognise the serial port */
539 return -ENODEV;
540 }
541 }
542 } else if (strcmp(name, "ch-a") == 0)
543 offset = 0;
544 else if (strcmp(name, "ch-b") == 0)
545 offset = 1;
546 else
547 return -ENODEV;
548 return add_preferred_console("ttyS", offset, NULL);
549 }
550 console_initcall(set_preferred_console);
551 #endif /* CONFIG_SERIAL_CORE_CONSOLE */
552 #endif /* CONFIG_PPC_MULTIPLATFORM */
553
554 struct bi_record *find_bootinfo(void)
555 {
556 struct bi_record *rec;
557
558 rec = (struct bi_record *)_ALIGN((ulong)__bss_start+(1<<20)-1,(1<<20));
559 if ( rec->tag != BI_FIRST ) {
560 /*
561 * This 0x10000 offset is a terrible hack but it will go away when
562 * we have the bootloader handle all the relocation and
563 * prom calls -- Cort
564 */
565 rec = (struct bi_record *)_ALIGN((ulong)__bss_start+0x10000+(1<<20)-1,(1<<20));
566 if ( rec->tag != BI_FIRST )
567 return NULL;
568 }
569 return rec;
570 }
571
572 void parse_bootinfo(struct bi_record *rec)
573 {
574 if (rec == NULL || rec->tag != BI_FIRST)
575 return;
576 while (rec->tag != BI_LAST) {
577 ulong *data = rec->data;
578 switch (rec->tag) {
579 case BI_CMD_LINE:
580 strlcpy(cmd_line, (void *)data, sizeof(cmd_line));
581 break;
582 case BI_SYSMAP:
583 sysmap = (char *)((data[0] >= (KERNELBASE)) ? data[0] :
584 (data[0]+KERNELBASE));
585 sysmap_size = data[1];
586 break;
587 #ifdef CONFIG_BLK_DEV_INITRD
588 case BI_INITRD:
589 initrd_start = data[0] + KERNELBASE;
590 initrd_end = data[0] + data[1] + KERNELBASE;
591 break;
592 #endif /* CONFIG_BLK_DEV_INITRD */
593 #ifdef CONFIG_PPC_MULTIPLATFORM
594 case BI_MACHTYPE:
595 _machine = data[0];
596 break;
597 #endif
598 case BI_MEMSIZE:
599 boot_mem_size = data[0];
600 break;
601 }
602 rec = (struct bi_record *)((ulong)rec + rec->size);
603 }
604 }
605
606 /*
607 * Find out what kind of machine we're on and save any data we need
608 * from the early boot process (devtree is copied on pmac by prom_init()).
609 * This is called very early on the boot process, after a minimal
610 * MMU environment has been set up but before MMU_init is called.
611 */
612 void __init
613 machine_init(unsigned long r3, unsigned long r4, unsigned long r5,
614 unsigned long r6, unsigned long r7)
615 {
616 #ifdef CONFIG_CMDLINE
617 strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
618 #endif /* CONFIG_CMDLINE */
619
620 #ifdef CONFIG_6xx
621 ppc_md.power_save = ppc6xx_idle;
622 #endif
623 #ifdef CONFIG_POWER4
624 ppc_md.power_save = power4_idle;
625 #endif
626
627 platform_init(r3, r4, r5, r6, r7);
628
629 if (ppc_md.progress)
630 ppc_md.progress("id mach(): done", 0x200);
631 }
632
633 /* Checks "l2cr=xxxx" command-line option */
634 int __init ppc_setup_l2cr(char *str)
635 {
636 if (cpu_has_feature(CPU_FTR_L2CR)) {
637 unsigned long val = simple_strtoul(str, NULL, 0);
638 printk(KERN_INFO "l2cr set to %lx\n", val);
639 _set_L2CR(0); /* force invalidate by disable cache */
640 _set_L2CR(val); /* and enable it */
641 }
642 return 1;
643 }
644 __setup("l2cr=", ppc_setup_l2cr);
645
646 #ifdef CONFIG_GENERIC_NVRAM
647
648 /* Generic nvram hooks used by drivers/char/gen_nvram.c */
649 unsigned char nvram_read_byte(int addr)
650 {
651 if (ppc_md.nvram_read_val)
652 return ppc_md.nvram_read_val(addr);
653 return 0xff;
654 }
655 EXPORT_SYMBOL(nvram_read_byte);
656
657 void nvram_write_byte(unsigned char val, int addr)
658 {
659 if (ppc_md.nvram_write_val)
660 ppc_md.nvram_write_val(addr, val);
661 }
662 EXPORT_SYMBOL(nvram_write_byte);
663
664 void nvram_sync(void)
665 {
666 if (ppc_md.nvram_sync)
667 ppc_md.nvram_sync();
668 }
669 EXPORT_SYMBOL(nvram_sync);
670
671 #endif /* CONFIG_NVRAM */
672
673 static struct cpu cpu_devices[NR_CPUS];
674
675 int __init ppc_init(void)
676 {
677 int i;
678
679 /* clear the progress line */
680 if ( ppc_md.progress ) ppc_md.progress(" ", 0xffff);
681
682 /* register CPU devices */
683 for (i = 0; i < NR_CPUS; i++)
684 if (cpu_possible(i))
685 register_cpu(&cpu_devices[i], i, NULL);
686
687 /* call platform init */
688 if (ppc_md.init != NULL) {
689 ppc_md.init();
690 }
691 return 0;
692 }
693
694 arch_initcall(ppc_init);
695
696 /* Warning, IO base is not yet inited */
697 void __init setup_arch(char **cmdline_p)
698 {
699 extern char *klimit;
700 extern void do_init_bootmem(void);
701
702 /* so udelay does something sensible, assume <= 1000 bogomips */
703 loops_per_jiffy = 500000000 / HZ;
704
705 #ifdef CONFIG_PPC_MULTIPLATFORM
706 /* This could be called "early setup arch", it must be done
707 * now because xmon need it
708 */
709 if (_machine == _MACH_Pmac)
710 pmac_feature_init(); /* New cool way */
711 #endif
712
713 #ifdef CONFIG_XMON
714 xmon_map_scc();
715 if (strstr(cmd_line, "xmon"))
716 xmon(NULL);
717 #endif /* CONFIG_XMON */
718 if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
719
720 #if defined(CONFIG_KGDB)
721 if (ppc_md.kgdb_map_scc)
722 ppc_md.kgdb_map_scc();
723 set_debug_traps();
724 if (strstr(cmd_line, "gdb")) {
725 if (ppc_md.progress)
726 ppc_md.progress("setup_arch: kgdb breakpoint", 0x4000);
727 printk("kgdb breakpoint activated\n");
728 breakpoint();
729 }
730 #endif
731
732 /*
733 * Set cache line size based on type of cpu as a default.
734 * Systems with OF can look in the properties on the cpu node(s)
735 * for a possibly more accurate value.
736 */
737 if (cpu_has_feature(CPU_FTR_SPLIT_ID_CACHE)) {
738 dcache_bsize = cur_cpu_spec[0]->dcache_bsize;
739 icache_bsize = cur_cpu_spec[0]->icache_bsize;
740 ucache_bsize = 0;
741 } else
742 ucache_bsize = dcache_bsize = icache_bsize
743 = cur_cpu_spec[0]->dcache_bsize;
744
745 /* reboot on panic */
746 panic_timeout = 180;
747
748 init_mm.start_code = PAGE_OFFSET;
749 init_mm.end_code = (unsigned long) _etext;
750 init_mm.end_data = (unsigned long) _edata;
751 init_mm.brk = (unsigned long) klimit;
752
753 /* Save unparsed command line copy for /proc/cmdline */
754 strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
755 *cmdline_p = cmd_line;
756
757 /* set up the bootmem stuff with available memory */
758 do_init_bootmem();
759 if ( ppc_md.progress ) ppc_md.progress("setup_arch: bootmem", 0x3eab);
760
761 #ifdef CONFIG_PPC_OCP
762 /* Initialize OCP device list */
763 ocp_early_init();
764 if ( ppc_md.progress ) ppc_md.progress("ocp: exit", 0x3eab);
765 #endif
766
767 #ifdef CONFIG_DUMMY_CONSOLE
768 conswitchp = &dummy_con;
769 #endif
770
771 ppc_md.setup_arch();
772 if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
773
774 paging_init();
775
776 /* this is for modules since _machine can be a define -- Cort */
777 ppc_md.ppc_machine = _machine;
778 }
kernel source for telekom puls (alcatel/mediatek)