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1da177e4 LT |
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 | * Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org) | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or | |
16 | * modify it under the terms of the GNU General Public License | |
17 | * as published by the Free Software Foundation; either version | |
18 | * 2 of the License, or (at your option) any later version. | |
19 | * | |
20 | */ | |
21 | ||
22 | /* | |
23 | * bootup setup stuff.. | |
24 | */ | |
25 | ||
26 | #include <linux/config.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/errno.h> | |
29 | #include <linux/sched.h> | |
30 | #include <linux/kernel.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/stddef.h> | |
33 | #include <linux/unistd.h> | |
34 | #include <linux/ptrace.h> | |
35 | #include <linux/slab.h> | |
36 | #include <linux/user.h> | |
37 | #include <linux/a.out.h> | |
38 | #include <linux/tty.h> | |
39 | #include <linux/string.h> | |
40 | #include <linux/delay.h> | |
41 | #include <linux/ioport.h> | |
42 | #include <linux/major.h> | |
43 | #include <linux/initrd.h> | |
44 | #include <linux/vt_kern.h> | |
45 | #include <linux/console.h> | |
46 | #include <linux/ide.h> | |
47 | #include <linux/pci.h> | |
48 | #include <linux/adb.h> | |
49 | #include <linux/cuda.h> | |
50 | #include <linux/pmu.h> | |
51 | #include <linux/irq.h> | |
52 | #include <linux/seq_file.h> | |
53 | #include <linux/root_dev.h> | |
54 | #include <linux/bitops.h> | |
55 | #include <linux/suspend.h> | |
56 | ||
57 | #include <asm/reg.h> | |
58 | #include <asm/sections.h> | |
59 | #include <asm/prom.h> | |
60 | #include <asm/system.h> | |
61 | #include <asm/pgtable.h> | |
62 | #include <asm/io.h> | |
63 | #include <asm/pci-bridge.h> | |
64 | #include <asm/ohare.h> | |
65 | #include <asm/mediabay.h> | |
66 | #include <asm/machdep.h> | |
67 | #include <asm/dma.h> | |
68 | #include <asm/bootx.h> | |
69 | #include <asm/cputable.h> | |
70 | #include <asm/btext.h> | |
71 | #include <asm/pmac_feature.h> | |
72 | #include <asm/time.h> | |
73 | #include <asm/of_device.h> | |
74 | #include <asm/mmu_context.h> | |
75 | ||
76 | #include "pmac_pic.h" | |
77 | #include "mem_pieces.h" | |
78 | ||
79 | #undef SHOW_GATWICK_IRQS | |
80 | ||
81 | extern long pmac_time_init(void); | |
82 | extern unsigned long pmac_get_rtc_time(void); | |
83 | extern int pmac_set_rtc_time(unsigned long nowtime); | |
84 | extern void pmac_read_rtc_time(void); | |
85 | extern void pmac_calibrate_decr(void); | |
86 | extern void pmac_pcibios_fixup(void); | |
87 | extern void pmac_find_bridges(void); | |
88 | extern unsigned long pmac_ide_get_base(int index); | |
89 | extern void pmac_ide_init_hwif_ports(hw_regs_t *hw, | |
90 | unsigned long data_port, unsigned long ctrl_port, int *irq); | |
91 | ||
92 | extern void pmac_nvram_update(void); | |
93 | extern unsigned char pmac_nvram_read_byte(int addr); | |
94 | extern void pmac_nvram_write_byte(int addr, unsigned char val); | |
95 | extern int pmac_pci_enable_device_hook(struct pci_dev *dev, int initial); | |
96 | extern void pmac_pcibios_after_init(void); | |
97 | extern int of_show_percpuinfo(struct seq_file *m, int i); | |
98 | ||
99 | struct device_node *memory_node; | |
100 | ||
101 | unsigned char drive_info; | |
102 | ||
103 | int ppc_override_l2cr = 0; | |
104 | int ppc_override_l2cr_value; | |
105 | int has_l2cache = 0; | |
106 | ||
107 | static int current_root_goodness = -1; | |
108 | ||
109 | extern int pmac_newworld; | |
110 | ||
111 | #define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */ | |
112 | ||
113 | extern void zs_kgdb_hook(int tty_num); | |
114 | static void ohare_init(void); | |
115 | #ifdef CONFIG_BOOTX_TEXT | |
6fdfb382 | 116 | static void pmac_progress(char *s, unsigned short hex); |
1da177e4 LT |
117 | #endif |
118 | ||
119 | sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN; | |
120 | ||
121 | #ifdef CONFIG_SMP | |
122 | extern struct smp_ops_t psurge_smp_ops; | |
123 | extern struct smp_ops_t core99_smp_ops; | |
124 | #endif /* CONFIG_SMP */ | |
125 | ||
6fdfb382 | 126 | static int __pmac |
1da177e4 LT |
127 | pmac_show_cpuinfo(struct seq_file *m) |
128 | { | |
129 | struct device_node *np; | |
130 | char *pp; | |
131 | int plen; | |
132 | int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, | |
133 | NULL, PMAC_MB_INFO_MODEL, 0); | |
134 | unsigned int mbflags = (unsigned int)pmac_call_feature(PMAC_FTR_GET_MB_INFO, | |
135 | NULL, PMAC_MB_INFO_FLAGS, 0); | |
136 | char* mbname; | |
137 | ||
138 | if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, (int)&mbname) != 0) | |
139 | mbname = "Unknown"; | |
140 | ||
141 | /* find motherboard type */ | |
142 | seq_printf(m, "machine\t\t: "); | |
143 | np = find_devices("device-tree"); | |
144 | if (np != NULL) { | |
145 | pp = (char *) get_property(np, "model", NULL); | |
146 | if (pp != NULL) | |
147 | seq_printf(m, "%s\n", pp); | |
148 | else | |
149 | seq_printf(m, "PowerMac\n"); | |
150 | pp = (char *) get_property(np, "compatible", &plen); | |
151 | if (pp != NULL) { | |
152 | seq_printf(m, "motherboard\t:"); | |
153 | while (plen > 0) { | |
154 | int l = strlen(pp) + 1; | |
155 | seq_printf(m, " %s", pp); | |
156 | plen -= l; | |
157 | pp += l; | |
158 | } | |
159 | seq_printf(m, "\n"); | |
160 | } | |
161 | } else | |
162 | seq_printf(m, "PowerMac\n"); | |
163 | ||
164 | /* print parsed model */ | |
165 | seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname); | |
166 | seq_printf(m, "pmac flags\t: %08x\n", mbflags); | |
167 | ||
168 | /* find l2 cache info */ | |
169 | np = find_devices("l2-cache"); | |
170 | if (np == 0) | |
171 | np = find_type_devices("cache"); | |
172 | if (np != 0) { | |
173 | unsigned int *ic = (unsigned int *) | |
174 | get_property(np, "i-cache-size", NULL); | |
175 | unsigned int *dc = (unsigned int *) | |
176 | get_property(np, "d-cache-size", NULL); | |
177 | seq_printf(m, "L2 cache\t:"); | |
178 | has_l2cache = 1; | |
179 | if (get_property(np, "cache-unified", NULL) != 0 && dc) { | |
180 | seq_printf(m, " %dK unified", *dc / 1024); | |
181 | } else { | |
182 | if (ic) | |
183 | seq_printf(m, " %dK instruction", *ic / 1024); | |
184 | if (dc) | |
185 | seq_printf(m, "%s %dK data", | |
186 | (ic? " +": ""), *dc / 1024); | |
187 | } | |
188 | pp = get_property(np, "ram-type", NULL); | |
189 | if (pp) | |
190 | seq_printf(m, " %s", pp); | |
191 | seq_printf(m, "\n"); | |
192 | } | |
193 | ||
194 | /* find ram info */ | |
195 | np = find_devices("memory"); | |
196 | if (np != 0) { | |
197 | int n; | |
198 | struct reg_property *reg = (struct reg_property *) | |
199 | get_property(np, "reg", &n); | |
200 | ||
201 | if (reg != 0) { | |
202 | unsigned long total = 0; | |
203 | ||
204 | for (n /= sizeof(struct reg_property); n > 0; --n) | |
205 | total += (reg++)->size; | |
206 | seq_printf(m, "memory\t\t: %luMB\n", total >> 20); | |
207 | } | |
208 | } | |
209 | ||
210 | /* Checks "l2cr-value" property in the registry */ | |
211 | np = find_devices("cpus"); | |
212 | if (np == 0) | |
213 | np = find_type_devices("cpu"); | |
214 | if (np != 0) { | |
215 | unsigned int *l2cr = (unsigned int *) | |
216 | get_property(np, "l2cr-value", NULL); | |
217 | if (l2cr != 0) { | |
218 | seq_printf(m, "l2cr override\t: 0x%x\n", *l2cr); | |
219 | } | |
220 | } | |
221 | ||
222 | /* Indicate newworld/oldworld */ | |
223 | seq_printf(m, "pmac-generation\t: %s\n", | |
224 | pmac_newworld ? "NewWorld" : "OldWorld"); | |
225 | ||
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
6fdfb382 | 230 | static int __openfirmware |
1da177e4 LT |
231 | pmac_show_percpuinfo(struct seq_file *m, int i) |
232 | { | |
233 | #ifdef CONFIG_CPU_FREQ_PMAC | |
234 | extern unsigned int pmac_get_one_cpufreq(int i); | |
235 | unsigned int freq = pmac_get_one_cpufreq(i); | |
236 | if (freq != 0) { | |
237 | seq_printf(m, "clock\t\t: %dMHz\n", freq/1000); | |
238 | return 0; | |
239 | } | |
240 | #endif /* CONFIG_CPU_FREQ_PMAC */ | |
241 | return of_show_percpuinfo(m, i); | |
242 | } | |
243 | ||
244 | static volatile u32 *sysctrl_regs; | |
245 | ||
246 | void __init | |
247 | pmac_setup_arch(void) | |
248 | { | |
249 | struct device_node *cpu; | |
250 | int *fp; | |
251 | unsigned long pvr; | |
252 | ||
253 | pvr = PVR_VER(mfspr(SPRN_PVR)); | |
254 | ||
255 | /* Set loops_per_jiffy to a half-way reasonable value, | |
256 | for use until calibrate_delay gets called. */ | |
257 | cpu = find_type_devices("cpu"); | |
258 | if (cpu != 0) { | |
259 | fp = (int *) get_property(cpu, "clock-frequency", NULL); | |
260 | if (fp != 0) { | |
261 | if (pvr == 4 || pvr >= 8) | |
262 | /* 604, G3, G4 etc. */ | |
263 | loops_per_jiffy = *fp / HZ; | |
264 | else | |
265 | /* 601, 603, etc. */ | |
266 | loops_per_jiffy = *fp / (2*HZ); | |
267 | } else | |
268 | loops_per_jiffy = 50000000 / HZ; | |
269 | } | |
270 | ||
271 | /* this area has the CPU identification register | |
272 | and some registers used by smp boards */ | |
273 | sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000); | |
274 | ohare_init(); | |
275 | ||
276 | /* Lookup PCI hosts */ | |
277 | pmac_find_bridges(); | |
278 | ||
279 | /* Checks "l2cr-value" property in the registry */ | |
280 | if (cpu_has_feature(CPU_FTR_L2CR)) { | |
281 | struct device_node *np = find_devices("cpus"); | |
282 | if (np == 0) | |
283 | np = find_type_devices("cpu"); | |
284 | if (np != 0) { | |
285 | unsigned int *l2cr = (unsigned int *) | |
286 | get_property(np, "l2cr-value", NULL); | |
287 | if (l2cr != 0) { | |
288 | ppc_override_l2cr = 1; | |
289 | ppc_override_l2cr_value = *l2cr; | |
290 | _set_L2CR(0); | |
291 | _set_L2CR(ppc_override_l2cr_value); | |
292 | } | |
293 | } | |
294 | } | |
295 | ||
296 | if (ppc_override_l2cr) | |
297 | printk(KERN_INFO "L2CR overriden (0x%x), backside cache is %s\n", | |
298 | ppc_override_l2cr_value, (ppc_override_l2cr_value & 0x80000000) | |
299 | ? "enabled" : "disabled"); | |
300 | ||
301 | #ifdef CONFIG_KGDB | |
302 | zs_kgdb_hook(0); | |
303 | #endif | |
304 | ||
305 | #ifdef CONFIG_ADB_CUDA | |
306 | find_via_cuda(); | |
307 | #else | |
308 | if (find_devices("via-cuda")) { | |
309 | printk("WARNING ! Your machine is Cuda based but your kernel\n"); | |
310 | printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n"); | |
311 | } | |
312 | #endif | |
313 | #ifdef CONFIG_ADB_PMU | |
314 | find_via_pmu(); | |
315 | #else | |
316 | if (find_devices("via-pmu")) { | |
317 | printk("WARNING ! Your machine is PMU based but your kernel\n"); | |
318 | printk(" wasn't compiled with CONFIG_ADB_PMU option !\n"); | |
319 | } | |
320 | #endif | |
321 | #ifdef CONFIG_NVRAM | |
322 | pmac_nvram_init(); | |
323 | #endif | |
324 | #ifdef CONFIG_BLK_DEV_INITRD | |
325 | if (initrd_start) | |
326 | ROOT_DEV = Root_RAM0; | |
327 | else | |
328 | #endif | |
329 | ROOT_DEV = DEFAULT_ROOT_DEVICE; | |
330 | ||
331 | #ifdef CONFIG_SMP | |
332 | /* Check for Core99 */ | |
333 | if (find_devices("uni-n") || find_devices("u3")) | |
334 | ppc_md.smp_ops = &core99_smp_ops; | |
335 | else | |
336 | ppc_md.smp_ops = &psurge_smp_ops; | |
337 | #endif /* CONFIG_SMP */ | |
338 | ||
339 | pci_create_OF_bus_map(); | |
340 | } | |
341 | ||
342 | static void __init ohare_init(void) | |
343 | { | |
344 | /* | |
345 | * Turn on the L2 cache. | |
346 | * We assume that we have a PSX memory controller iff | |
347 | * we have an ohare I/O controller. | |
348 | */ | |
349 | if (find_devices("ohare") != NULL) { | |
350 | if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) { | |
351 | if (sysctrl_regs[4] & 0x10) | |
352 | sysctrl_regs[4] |= 0x04000020; | |
353 | else | |
354 | sysctrl_regs[4] |= 0x04000000; | |
355 | if(has_l2cache) | |
356 | printk(KERN_INFO "Level 2 cache enabled\n"); | |
357 | } | |
358 | } | |
359 | } | |
360 | ||
361 | extern char *bootpath; | |
362 | extern char *bootdevice; | |
363 | void *boot_host; | |
364 | int boot_target; | |
365 | int boot_part; | |
366 | extern dev_t boot_dev; | |
367 | ||
368 | #ifdef CONFIG_SCSI | |
369 | void __init | |
370 | note_scsi_host(struct device_node *node, void *host) | |
371 | { | |
372 | int l; | |
373 | char *p; | |
374 | ||
375 | l = strlen(node->full_name); | |
376 | if (bootpath != NULL && bootdevice != NULL | |
377 | && strncmp(node->full_name, bootdevice, l) == 0 | |
378 | && (bootdevice[l] == '/' || bootdevice[l] == 0)) { | |
379 | boot_host = host; | |
380 | /* | |
381 | * There's a bug in OF 1.0.5. (Why am I not surprised.) | |
382 | * If you pass a path like scsi/sd@1:0 to canon, it returns | |
383 | * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0 | |
384 | * That is, the scsi target number doesn't get preserved. | |
385 | * So we pick the target number out of bootpath and use that. | |
386 | */ | |
387 | p = strstr(bootpath, "/sd@"); | |
388 | if (p != NULL) { | |
389 | p += 4; | |
390 | boot_target = simple_strtoul(p, NULL, 10); | |
391 | p = strchr(p, ':'); | |
392 | if (p != NULL) | |
393 | boot_part = simple_strtoul(p + 1, NULL, 10); | |
394 | } | |
395 | } | |
396 | } | |
397 | #endif | |
398 | ||
399 | #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) | |
400 | static dev_t __init | |
401 | find_ide_boot(void) | |
402 | { | |
403 | char *p; | |
404 | int n; | |
405 | dev_t __init pmac_find_ide_boot(char *bootdevice, int n); | |
406 | ||
407 | if (bootdevice == NULL) | |
408 | return 0; | |
409 | p = strrchr(bootdevice, '/'); | |
410 | if (p == NULL) | |
411 | return 0; | |
412 | n = p - bootdevice; | |
413 | ||
414 | return pmac_find_ide_boot(bootdevice, n); | |
415 | } | |
416 | #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */ | |
417 | ||
6fdfb382 | 418 | static void __init |
1da177e4 LT |
419 | find_boot_device(void) |
420 | { | |
421 | #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC) | |
422 | boot_dev = find_ide_boot(); | |
423 | #endif | |
424 | } | |
425 | ||
426 | static int initializing = 1; | |
427 | /* TODO: Merge the suspend-to-ram with the common code !!! | |
428 | * currently, this is a stub implementation for suspend-to-disk | |
429 | * only | |
430 | */ | |
431 | ||
432 | #ifdef CONFIG_SOFTWARE_SUSPEND | |
433 | ||
434 | static int pmac_pm_prepare(suspend_state_t state) | |
435 | { | |
436 | printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
441 | static int pmac_pm_enter(suspend_state_t state) | |
442 | { | |
443 | printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); | |
444 | ||
445 | /* Giveup the lazy FPU & vec so we don't have to back them | |
446 | * up from the low level code | |
447 | */ | |
448 | enable_kernel_fp(); | |
449 | ||
450 | #ifdef CONFIG_ALTIVEC | |
451 | if (cur_cpu_spec[0]->cpu_features & CPU_FTR_ALTIVEC) | |
452 | enable_kernel_altivec(); | |
453 | #endif /* CONFIG_ALTIVEC */ | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | static int pmac_pm_finish(suspend_state_t state) | |
459 | { | |
460 | printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state); | |
461 | ||
462 | /* Restore userland MMU context */ | |
463 | set_context(current->active_mm->context, current->active_mm->pgd); | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static struct pm_ops pmac_pm_ops = { | |
469 | .pm_disk_mode = PM_DISK_SHUTDOWN, | |
470 | .prepare = pmac_pm_prepare, | |
471 | .enter = pmac_pm_enter, | |
472 | .finish = pmac_pm_finish, | |
473 | }; | |
474 | ||
475 | #endif /* CONFIG_SOFTWARE_SUSPEND */ | |
476 | ||
477 | static int pmac_late_init(void) | |
478 | { | |
479 | initializing = 0; | |
480 | #ifdef CONFIG_SOFTWARE_SUSPEND | |
481 | pm_set_ops(&pmac_pm_ops); | |
482 | #endif /* CONFIG_SOFTWARE_SUSPEND */ | |
483 | return 0; | |
484 | } | |
485 | ||
486 | late_initcall(pmac_late_init); | |
487 | ||
488 | /* can't be __init - can be called whenever a disk is first accessed */ | |
489 | void __pmac | |
490 | note_bootable_part(dev_t dev, int part, int goodness) | |
491 | { | |
492 | static int found_boot = 0; | |
493 | char *p; | |
494 | ||
495 | if (!initializing) | |
496 | return; | |
497 | if ((goodness <= current_root_goodness) && | |
498 | ROOT_DEV != DEFAULT_ROOT_DEVICE) | |
499 | return; | |
500 | p = strstr(saved_command_line, "root="); | |
501 | if (p != NULL && (p == saved_command_line || p[-1] == ' ')) | |
502 | return; | |
503 | ||
504 | if (!found_boot) { | |
505 | find_boot_device(); | |
506 | found_boot = 1; | |
507 | } | |
508 | if (!boot_dev || dev == boot_dev) { | |
509 | ROOT_DEV = dev + part; | |
510 | boot_dev = 0; | |
511 | current_root_goodness = goodness; | |
512 | } | |
513 | } | |
514 | ||
6fdfb382 | 515 | static void __pmac |
1da177e4 LT |
516 | pmac_restart(char *cmd) |
517 | { | |
518 | #ifdef CONFIG_ADB_CUDA | |
519 | struct adb_request req; | |
520 | #endif /* CONFIG_ADB_CUDA */ | |
521 | ||
522 | switch (sys_ctrler) { | |
523 | #ifdef CONFIG_ADB_CUDA | |
524 | case SYS_CTRLER_CUDA: | |
525 | cuda_request(&req, NULL, 2, CUDA_PACKET, | |
526 | CUDA_RESET_SYSTEM); | |
527 | for (;;) | |
528 | cuda_poll(); | |
529 | break; | |
530 | #endif /* CONFIG_ADB_CUDA */ | |
531 | #ifdef CONFIG_ADB_PMU | |
532 | case SYS_CTRLER_PMU: | |
533 | pmu_restart(); | |
534 | break; | |
535 | #endif /* CONFIG_ADB_PMU */ | |
536 | default: ; | |
537 | } | |
538 | } | |
539 | ||
6fdfb382 | 540 | static void __pmac |
1da177e4 LT |
541 | pmac_power_off(void) |
542 | { | |
543 | #ifdef CONFIG_ADB_CUDA | |
544 | struct adb_request req; | |
545 | #endif /* CONFIG_ADB_CUDA */ | |
546 | ||
547 | switch (sys_ctrler) { | |
548 | #ifdef CONFIG_ADB_CUDA | |
549 | case SYS_CTRLER_CUDA: | |
550 | cuda_request(&req, NULL, 2, CUDA_PACKET, | |
551 | CUDA_POWERDOWN); | |
552 | for (;;) | |
553 | cuda_poll(); | |
554 | break; | |
555 | #endif /* CONFIG_ADB_CUDA */ | |
556 | #ifdef CONFIG_ADB_PMU | |
557 | case SYS_CTRLER_PMU: | |
558 | pmu_shutdown(); | |
559 | break; | |
560 | #endif /* CONFIG_ADB_PMU */ | |
561 | default: ; | |
562 | } | |
563 | } | |
564 | ||
6fdfb382 | 565 | static void __pmac |
1da177e4 LT |
566 | pmac_halt(void) |
567 | { | |
568 | pmac_power_off(); | |
569 | } | |
570 | ||
571 | /* | |
572 | * Read in a property describing some pieces of memory. | |
573 | */ | |
574 | ||
575 | static int __init | |
576 | get_mem_prop(char *name, struct mem_pieces *mp) | |
577 | { | |
578 | struct reg_property *rp; | |
579 | int i, s; | |
580 | unsigned int *ip; | |
581 | int nac = prom_n_addr_cells(memory_node); | |
582 | int nsc = prom_n_size_cells(memory_node); | |
583 | ||
584 | ip = (unsigned int *) get_property(memory_node, name, &s); | |
585 | if (ip == NULL) { | |
586 | printk(KERN_ERR "error: couldn't get %s property on /memory\n", | |
587 | name); | |
588 | return 0; | |
589 | } | |
590 | s /= (nsc + nac) * 4; | |
591 | rp = mp->regions; | |
592 | for (i = 0; i < s; ++i, ip += nac+nsc) { | |
593 | if (nac >= 2 && ip[nac-2] != 0) | |
594 | continue; | |
595 | rp->address = ip[nac-1]; | |
596 | if (nsc >= 2 && ip[nac+nsc-2] != 0) | |
597 | rp->size = ~0U; | |
598 | else | |
599 | rp->size = ip[nac+nsc-1]; | |
600 | ++rp; | |
601 | } | |
602 | mp->n_regions = rp - mp->regions; | |
603 | ||
604 | /* Make sure the pieces are sorted. */ | |
605 | mem_pieces_sort(mp); | |
606 | mem_pieces_coalesce(mp); | |
607 | return 1; | |
608 | } | |
609 | ||
610 | /* | |
611 | * On systems with Open Firmware, collect information about | |
612 | * physical RAM and which pieces are already in use. | |
613 | * At this point, we have (at least) the first 8MB mapped with a BAT. | |
614 | * Our text, data, bss use something over 1MB, starting at 0. | |
615 | * Open Firmware may be using 1MB at the 4MB point. | |
616 | */ | |
617 | unsigned long __init | |
618 | pmac_find_end_of_memory(void) | |
619 | { | |
620 | unsigned long a, total; | |
621 | struct mem_pieces phys_mem; | |
622 | ||
623 | /* | |
624 | * Find out where physical memory is, and check that it | |
625 | * starts at 0 and is contiguous. It seems that RAM is | |
626 | * always physically contiguous on Power Macintoshes. | |
627 | * | |
628 | * Supporting discontiguous physical memory isn't hard, | |
629 | * it just makes the virtual <-> physical mapping functions | |
630 | * more complicated (or else you end up wasting space | |
631 | * in mem_map). | |
632 | */ | |
633 | memory_node = find_devices("memory"); | |
634 | if (memory_node == NULL || !get_mem_prop("reg", &phys_mem) | |
635 | || phys_mem.n_regions == 0) | |
636 | panic("No RAM??"); | |
637 | a = phys_mem.regions[0].address; | |
638 | if (a != 0) | |
639 | panic("RAM doesn't start at physical address 0"); | |
640 | total = phys_mem.regions[0].size; | |
641 | ||
642 | if (phys_mem.n_regions > 1) { | |
643 | printk("RAM starting at 0x%x is not contiguous\n", | |
644 | phys_mem.regions[1].address); | |
645 | printk("Using RAM from 0 to 0x%lx\n", total-1); | |
646 | } | |
647 | ||
648 | return total; | |
649 | } | |
650 | ||
651 | void __init | |
652 | pmac_init(unsigned long r3, unsigned long r4, unsigned long r5, | |
653 | unsigned long r6, unsigned long r7) | |
654 | { | |
655 | /* isa_io_base gets set in pmac_find_bridges */ | |
656 | isa_mem_base = PMAC_ISA_MEM_BASE; | |
657 | pci_dram_offset = PMAC_PCI_DRAM_OFFSET; | |
658 | ISA_DMA_THRESHOLD = ~0L; | |
659 | DMA_MODE_READ = 1; | |
660 | DMA_MODE_WRITE = 2; | |
661 | ||
662 | ppc_md.setup_arch = pmac_setup_arch; | |
663 | ppc_md.show_cpuinfo = pmac_show_cpuinfo; | |
664 | ppc_md.show_percpuinfo = pmac_show_percpuinfo; | |
665 | ppc_md.irq_canonicalize = NULL; | |
666 | ppc_md.init_IRQ = pmac_pic_init; | |
667 | ppc_md.get_irq = pmac_get_irq; /* Changed later on ... */ | |
668 | ||
669 | ppc_md.pcibios_fixup = pmac_pcibios_fixup; | |
670 | ppc_md.pcibios_enable_device_hook = pmac_pci_enable_device_hook; | |
671 | ppc_md.pcibios_after_init = pmac_pcibios_after_init; | |
672 | ppc_md.phys_mem_access_prot = pci_phys_mem_access_prot; | |
673 | ||
674 | ppc_md.restart = pmac_restart; | |
675 | ppc_md.power_off = pmac_power_off; | |
676 | ppc_md.halt = pmac_halt; | |
677 | ||
678 | ppc_md.time_init = pmac_time_init; | |
679 | ppc_md.set_rtc_time = pmac_set_rtc_time; | |
680 | ppc_md.get_rtc_time = pmac_get_rtc_time; | |
681 | ppc_md.calibrate_decr = pmac_calibrate_decr; | |
682 | ||
683 | ppc_md.find_end_of_memory = pmac_find_end_of_memory; | |
684 | ||
685 | ppc_md.feature_call = pmac_do_feature_call; | |
686 | ||
687 | #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) | |
688 | #ifdef CONFIG_BLK_DEV_IDE_PMAC | |
689 | ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports; | |
690 | ppc_ide_md.default_io_base = pmac_ide_get_base; | |
691 | #endif /* CONFIG_BLK_DEV_IDE_PMAC */ | |
692 | #endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */ | |
693 | ||
694 | #ifdef CONFIG_BOOTX_TEXT | |
695 | ppc_md.progress = pmac_progress; | |
696 | #endif /* CONFIG_BOOTX_TEXT */ | |
697 | ||
698 | if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0); | |
699 | ||
700 | } | |
701 | ||
702 | #ifdef CONFIG_BOOTX_TEXT | |
6fdfb382 | 703 | static void __init |
1da177e4 LT |
704 | pmac_progress(char *s, unsigned short hex) |
705 | { | |
706 | if (boot_text_mapped) { | |
707 | btext_drawstring(s); | |
708 | btext_drawchar('\n'); | |
709 | } | |
710 | } | |
711 | #endif /* CONFIG_BOOTX_TEXT */ | |
712 | ||
713 | static int __init | |
714 | pmac_declare_of_platform_devices(void) | |
715 | { | |
716 | struct device_node *np; | |
717 | ||
718 | np = find_devices("uni-n"); | |
719 | if (np) { | |
720 | for (np = np->child; np != NULL; np = np->sibling) | |
721 | if (strncmp(np->name, "i2c", 3) == 0) { | |
0365ba7f BH |
722 | of_platform_device_create(np, "uni-n-i2c", |
723 | NULL); | |
1da177e4 LT |
724 | break; |
725 | } | |
726 | } | |
727 | np = find_devices("u3"); | |
728 | if (np) { | |
729 | for (np = np->child; np != NULL; np = np->sibling) | |
730 | if (strncmp(np->name, "i2c", 3) == 0) { | |
0365ba7f BH |
731 | of_platform_device_create(np, "u3-i2c", |
732 | NULL); | |
1da177e4 LT |
733 | break; |
734 | } | |
735 | } | |
736 | ||
737 | np = find_devices("valkyrie"); | |
738 | if (np) | |
0365ba7f | 739 | of_platform_device_create(np, "valkyrie", NULL); |
1da177e4 LT |
740 | np = find_devices("platinum"); |
741 | if (np) | |
0365ba7f | 742 | of_platform_device_create(np, "platinum", NULL); |
1da177e4 LT |
743 | |
744 | return 0; | |
745 | } | |
746 | ||
747 | device_initcall(pmac_declare_of_platform_devices); |