projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] powerpc: Merge kexec
[deliverable/linux.git] / arch / powerpc / platforms / powermac / setup.c
CommitLineData
14cf11af 1/*
35499c01 2 * Powermac setup and early boot code plus other random bits.
14cf11af
PM		 3 *
4 * PowerPC version
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 *
7 * Adapted for Power Macintosh by Paul Mackerras
35499c01 8 * Copyright (C) 1996 Paul Mackerras (paulus@samba.org)
14cf11af
PM		 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>
3d1229d6 63#include <asm/kexec.h>
14cf11af
PM		 64#include <asm/pci-bridge.h>
65#include <asm/ohare.h>
66#include <asm/mediabay.h>
67#include <asm/machdep.h>
68#include <asm/dma.h>
14cf11af
PM		 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>
35499c01
PM		 75#include <asm/iommu.h>
76#include <asm/smu.h>
77#include <asm/pmc.h>
78#include <asm/mpic.h>
fbf1769d 79#include <asm/lmb.h>
14cf11af 80
3c3f42d6 81#include "pmac.h"
14cf11af
PM		 82
83#undef SHOW_GATWICK_IRQS
84
14cf11af
PM		 85unsigned char drive_info;
86
87int ppc_override_l2cr = 0;
88int ppc_override_l2cr_value;
89int has_l2cache = 0;
90
9b6b563c
PM		 91int pmac_newworld = 1;
92
14cf11af
PM		 93static int current_root_goodness = -1;
94
95extern int pmac_newworld;
35499c01 96extern struct machdep_calls pmac_md;
14cf11af
PM		 97
98#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */
99
35499c01
PM		 100#ifdef CONFIG_PPC64
101#include <asm/udbg.h>
102int sccdbg;
14cf11af
PM		 103#endif
104
35499c01
PM		 105extern void zs_kgdb_hook(int tty_num);
106
14cf11af 107sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
35499c01
PM		 108EXPORT_SYMBOL(sys_ctrler);
109
110#ifdef CONFIG_PMAC_SMU
111unsigned long smu_cmdbuf_abs;
112EXPORT_SYMBOL(smu_cmdbuf_abs);
113#endif
14cf11af
PM		 114
115#ifdef CONFIG_SMP
116extern struct smp_ops_t psurge_smp_ops;
117extern struct smp_ops_t core99_smp_ops;
118#endif /* CONFIG_SMP */
119
0dd194d0 120static void pmac_show_cpuinfo(struct seq_file *m)
14cf11af
PM		 121{
122 struct device_node *np;
123 char *pp;
124 int plen;
0dd194d0
PM		 125 int mbmodel;
126 unsigned int mbflags;
14cf11af
PM		 127 char* mbname;
128
0dd194d0
PM		 129 mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
130 PMAC_MB_INFO_MODEL, 0);
131 mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
132 PMAC_MB_INFO_FLAGS, 0);
133 if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
134 (long) &mbname) != 0)
14cf11af
PM		 135 mbname = "Unknown";
136
137 /* find motherboard type */
138 seq_printf(m, "machine\t\t: ");
0dd194d0 139 np = of_find_node_by_path("/");
14cf11af
PM		 140 if (np != NULL) {
141 pp = (char *) get_property(np, "model", NULL);
142 if (pp != NULL)
143 seq_printf(m, "%s\n", pp);
144 else
145 seq_printf(m, "PowerMac\n");
146 pp = (char *) get_property(np, "compatible", &plen);
147 if (pp != NULL) {
148 seq_printf(m, "motherboard\t:");
149 while (plen > 0) {
150 int l = strlen(pp) + 1;
151 seq_printf(m, " %s", pp);
152 plen -= l;
153 pp += l;
154 }
155 seq_printf(m, "\n");
156 }
0dd194d0 157 of_node_put(np);
14cf11af
PM		 158 } else
159 seq_printf(m, "PowerMac\n");
160
161 /* print parsed model */
162 seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
163 seq_printf(m, "pmac flags\t: %08x\n", mbflags);
164
165 /* find l2 cache info */
0dd194d0
PM		 166 np = of_find_node_by_name(NULL, "l2-cache");
167 if (np == NULL)
168 np = of_find_node_by_type(NULL, "cache");
169 if (np != NULL) {
14cf11af
PM		 170 unsigned int *ic = (unsigned int *)
171 get_property(np, "i-cache-size", NULL);
172 unsigned int *dc = (unsigned int *)
173 get_property(np, "d-cache-size", NULL);
174 seq_printf(m, "L2 cache\t:");
175 has_l2cache = 1;
176 if (get_property(np, "cache-unified", NULL) != 0 && dc) {
177 seq_printf(m, " %dK unified", *dc / 1024);
178 } else {
179 if (ic)
180 seq_printf(m, " %dK instruction", *ic / 1024);
181 if (dc)
182 seq_printf(m, "%s %dK data",
183 (ic? " +": ""), *dc / 1024);
184 }
185 pp = get_property(np, "ram-type", NULL);
186 if (pp)
187 seq_printf(m, " %s", pp);
188 seq_printf(m, "\n");
0dd194d0 189 of_node_put(np);
14cf11af
PM		 190 }
191
192 /* Indicate newworld/oldworld */
193 seq_printf(m, "pmac-generation\t: %s\n",
194 pmac_newworld ? "NewWorld" : "OldWorld");
14cf11af
PM		 195}
196
35499c01
PM		 197#ifndef CONFIG_ADB_CUDA
198int find_via_cuda(void)
199{
200 if (!find_devices("via-cuda"))
201 return 0;
202 printk("WARNING ! Your machine is CUDA-based but your kernel\n");
203 printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n");
204 return 0;
205}
206#endif
14cf11af 207
35499c01
PM		 208#ifndef CONFIG_ADB_PMU
209int find_via_pmu(void)
14cf11af 210{
35499c01
PM		 211 if (!find_devices("via-pmu"))
212 return 0;
213 printk("WARNING ! Your machine is PMU-based but your kernel\n");
214 printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
a575b807 215 return 0;
35499c01
PM		 216}
217#endif
14cf11af 218
35499c01
PM		 219#ifndef CONFIG_PMAC_SMU
220int smu_init(void)
221{
222 /* should check and warn if SMU is present */
223 return 0;
224}
225#endif
14cf11af 226
35499c01
PM		 227#ifdef CONFIG_PPC32
228static volatile u32 *sysctrl_regs;
14cf11af 229
35499c01
PM		 230static void __init ohare_init(void)
231{
14cf11af
PM		 232 /* this area has the CPU identification register
233 and some registers used by smp boards */
234 sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
14cf11af 235
35499c01
PM		 236 /*
237 * Turn on the L2 cache.
238 * We assume that we have a PSX memory controller iff
239 * we have an ohare I/O controller.
240 */
241 if (find_devices("ohare") != NULL) {
242 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
243 if (sysctrl_regs[4] & 0x10)
244 sysctrl_regs[4] |= 0x04000020;
245 else
246 sysctrl_regs[4] |= 0x04000000;
247 if(has_l2cache)
248 printk(KERN_INFO "Level 2 cache enabled\n");
249 }
250 }
251}
14cf11af 252
35499c01
PM		 253static void __init l2cr_init(void)
254{
14cf11af
PM		 255 /* Checks "l2cr-value" property in the registry */
256 if (cpu_has_feature(CPU_FTR_L2CR)) {
257 struct device_node *np = find_devices("cpus");
258 if (np == 0)
259 np = find_type_devices("cpu");
260 if (np != 0) {
261 unsigned int *l2cr = (unsigned int *)
262 get_property(np, "l2cr-value", NULL);
263 if (l2cr != 0) {
264 ppc_override_l2cr = 1;
265 ppc_override_l2cr_value = *l2cr;
266 _set_L2CR(0);
267 _set_L2CR(ppc_override_l2cr_value);
268 }
269 }
270 }
271
272 if (ppc_override_l2cr)
35499c01
PM		 273 printk(KERN_INFO "L2CR overridden (0x%x), "
274 "backside cache is %s\n",
275 ppc_override_l2cr_value,
276 (ppc_override_l2cr_value & 0x80000000)
14cf11af 277 ? "enabled" : "disabled");
35499c01
PM		 278}
279#endif
280
281void __init pmac_setup_arch(void)
282{
a575b807 283 struct device_node *cpu, *ic;
35499c01
PM		 284 int *fp;
285 unsigned long pvr;
286
287 pvr = PVR_VER(mfspr(SPRN_PVR));
288
289 /* Set loops_per_jiffy to a half-way reasonable value,
290 for use until calibrate_delay gets called. */
291 loops_per_jiffy = 50000000 / HZ;
292 cpu = of_find_node_by_type(NULL, "cpu");
293 if (cpu != NULL) {
294 fp = (int *) get_property(cpu, "clock-frequency", NULL);
295 if (fp != NULL) {
296 if (pvr >= 0x30 && pvr < 0x80)
297 /* PPC970 etc. */
298 loops_per_jiffy = *fp / (3 * HZ);
299 else if (pvr == 4 || pvr >= 8)
300 /* 604, G3, G4 etc. */
301 loops_per_jiffy = *fp / HZ;
302 else
303 /* 601, 603, etc. */
304 loops_per_jiffy = *fp / (2 * HZ);
305 }
306 of_node_put(cpu);
307 }
308
a575b807 309 /* See if newworld or oldworld */
bfab1019
PM		 310 for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; )
311 if (get_property(ic, "interrupt-controller", NULL))
312 break;
a575b807
PM		 313 pmac_newworld = (ic != NULL);
314 if (ic)
315 of_node_put(ic);
316
35499c01
PM		 317 /* Lookup PCI hosts */
318 pmac_pci_init();
319
320#ifdef CONFIG_PPC32
321 ohare_init();
322 l2cr_init();
323#endif /* CONFIG_PPC32 */
324
325#ifdef CONFIG_PPC64
326 /* Probe motherboard chipset */
327 /* this is done earlier in setup_arch for 32-bit */
328 pmac_feature_init();
329
330 /* We can NAP */
331 powersave_nap = 1;
332 printk(KERN_INFO "Using native/NAP idle loop\n");
333#endif
14cf11af
PM		 334
335#ifdef CONFIG_KGDB
336 zs_kgdb_hook(0);
337#endif
338
14cf11af 339 find_via_cuda();
14cf11af 340 find_via_pmu();
35499c01
PM		 341 smu_init();
342
91c33d28 343#if defined(CONFIG_NVRAM) || defined(CONFIG_PPC64)
14cf11af
PM		 344 pmac_nvram_init();
345#endif
35499c01
PM		 346
347#ifdef CONFIG_PPC32
14cf11af
PM		 348#ifdef CONFIG_BLK_DEV_INITRD
349 if (initrd_start)
350 ROOT_DEV = Root_RAM0;
351 else
352#endif
353 ROOT_DEV = DEFAULT_ROOT_DEVICE;
35499c01 354#endif
14cf11af
PM		 355
356#ifdef CONFIG_SMP
357 /* Check for Core99 */
358 if (find_devices("uni-n") || find_devices("u3"))
7ed476d1 359 smp_ops = &core99_smp_ops;
35499c01 360#ifdef CONFIG_PPC32
14cf11af 361 else
7ed476d1 362 smp_ops = &psurge_smp_ops;
35499c01 363#endif
14cf11af 364#endif /* CONFIG_SMP */
14cf11af
PM		 365}
366
9b6b563c
PM		 367char *bootpath;
368char *bootdevice;
14cf11af
PM		 369void *boot_host;
370int boot_target;
371int boot_part;
372extern dev_t boot_dev;
373
374#ifdef CONFIG_SCSI
35499c01 375void __init note_scsi_host(struct device_node *node, void *host)
14cf11af
PM		 376{
377 int l;
378 char *p;
379
380 l = strlen(node->full_name);
381 if (bootpath != NULL && bootdevice != NULL
382 && strncmp(node->full_name, bootdevice, l) == 0
383 && (bootdevice[l] == '/' || bootdevice[l] == 0)) {
384 boot_host = host;
385 /*
386 * There's a bug in OF 1.0.5. (Why am I not surprised.)
387 * If you pass a path like scsi/sd@1:0 to canon, it returns
388 * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0
389 * That is, the scsi target number doesn't get preserved.
390 * So we pick the target number out of bootpath and use that.
391 */
392 p = strstr(bootpath, "/sd@");
393 if (p != NULL) {
394 p += 4;
395 boot_target = simple_strtoul(p, NULL, 10);
396 p = strchr(p, ':');
397 if (p != NULL)
398 boot_part = simple_strtoul(p + 1, NULL, 10);
399 }
400 }
401}
9b6b563c 402EXPORT_SYMBOL(note_scsi_host);
14cf11af
PM		 403#endif
404
405#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
35499c01 406static dev_t __init find_ide_boot(void)
14cf11af
PM		 407{
408 char *p;
409 int n;
410 dev_t __init pmac_find_ide_boot(char *bootdevice, int n);
411
412 if (bootdevice == NULL)
413 return 0;
414 p = strrchr(bootdevice, '/');
415 if (p == NULL)
416 return 0;
417 n = p - bootdevice;
418
419 return pmac_find_ide_boot(bootdevice, n);
420}
421#endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
422
35499c01 423static void __init find_boot_device(void)
14cf11af
PM		 424{
425#if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
426 boot_dev = find_ide_boot();
427#endif
428}
429
14cf11af
PM		 430/* TODO: Merge the suspend-to-ram with the common code !!!
431 * currently, this is a stub implementation for suspend-to-disk
432 * only
433 */
434
435#ifdef CONFIG_SOFTWARE_SUSPEND
436
437static int pmac_pm_prepare(suspend_state_t state)
438{
439 printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
440
441 return 0;
442}
443
444static int pmac_pm_enter(suspend_state_t state)
445{
446 printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
447
448 /* Giveup the lazy FPU & vec so we don't have to back them
449 * up from the low level code
450 */
451 enable_kernel_fp();
452
453#ifdef CONFIG_ALTIVEC
400d2212 454 if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
14cf11af
PM		 455 enable_kernel_altivec();
456#endif /* CONFIG_ALTIVEC */
457
458 return 0;
459}
460
461static int pmac_pm_finish(suspend_state_t state)
462{
463 printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
464
465 /* Restore userland MMU context */
466 set_context(current->active_mm->context, current->active_mm->pgd);
467
468 return 0;
469}
470
471static struct pm_ops pmac_pm_ops = {
472 .pm_disk_mode = PM_DISK_SHUTDOWN,
473 .prepare = pmac_pm_prepare,
474 .enter = pmac_pm_enter,
475 .finish = pmac_pm_finish,
476};
477
478#endif /* CONFIG_SOFTWARE_SUSPEND */
479
35499c01
PM		 480static int initializing = 1;
481
14cf11af
PM		 482static int pmac_late_init(void)
483{
484 initializing = 0;
485#ifdef CONFIG_SOFTWARE_SUSPEND
486 pm_set_ops(&pmac_pm_ops);
487#endif /* CONFIG_SOFTWARE_SUSPEND */
488 return 0;
489}
490
491late_initcall(pmac_late_init);
492
493/* can't be __init - can be called whenever a disk is first accessed */
35499c01 494void note_bootable_part(dev_t dev, int part, int goodness)
14cf11af
PM		 495{
496 static int found_boot = 0;
497 char *p;
498
499 if (!initializing)
500 return;
501 if ((goodness <= current_root_goodness) &&
502 ROOT_DEV != DEFAULT_ROOT_DEVICE)
503 return;
504 p = strstr(saved_command_line, "root=");
505 if (p != NULL && (p == saved_command_line || p[-1] == ' '))
506 return;
507
508 if (!found_boot) {
509 find_boot_device();
510 found_boot = 1;
511 }
512 if (!boot_dev || dev == boot_dev) {
513 ROOT_DEV = dev + part;
514 boot_dev = 0;
515 current_root_goodness = goodness;
516 }
517}
518
14cf11af 519#ifdef CONFIG_ADB_CUDA
35499c01
PM		 520static void cuda_restart(void)
521{
14cf11af 522 struct adb_request req;
14cf11af 523
35499c01
PM		 524 cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
525 for (;;)
526 cuda_poll();
527}
528
529static void cuda_shutdown(void)
530{
531 struct adb_request req;
532
533 cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
534 for (;;)
535 cuda_poll();
536}
537
538#else
539#define cuda_restart()
540#define cuda_shutdown()
541#endif
542
543#ifndef CONFIG_ADB_PMU
544#define pmu_restart()
545#define pmu_shutdown()
546#endif
547
548#ifndef CONFIG_PMAC_SMU
549#define smu_restart()
550#define smu_shutdown()
551#endif
552
553static void pmac_restart(char *cmd)
554{
14cf11af 555 switch (sys_ctrler) {
14cf11af 556 case SYS_CTRLER_CUDA:
35499c01 557 cuda_restart();
14cf11af 558 break;
14cf11af
PM		 559 case SYS_CTRLER_PMU:
560 pmu_restart();
561 break;
35499c01
PM		 562 case SYS_CTRLER_SMU:
563 smu_restart();
564 break;
14cf11af
PM		 565 default: ;
566 }
567}
568
35499c01 569static void pmac_power_off(void)
14cf11af 570{
14cf11af 571 switch (sys_ctrler) {
14cf11af 572 case SYS_CTRLER_CUDA:
35499c01 573 cuda_shutdown();
14cf11af 574 break;
14cf11af
PM		 575 case SYS_CTRLER_PMU:
576 pmu_shutdown();
577 break;
35499c01
PM		 578 case SYS_CTRLER_SMU:
579 smu_shutdown();
580 break;
14cf11af
PM		 581 default: ;
582 }
583}
584
585static void
586pmac_halt(void)
587{
588 pmac_power_off();
589}
590
35499c01 591#ifdef CONFIG_PPC32
9b6b563c 592void __init pmac_init(void)
14cf11af 593{
35499c01 594 /* isa_io_base gets set in pmac_pci_init */
14cf11af
PM		 595 isa_mem_base = PMAC_ISA_MEM_BASE;
596 pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
597 ISA_DMA_THRESHOLD = ~0L;
598 DMA_MODE_READ = 1;
599 DMA_MODE_WRITE = 2;
600
35499c01 601 ppc_md = pmac_md;
14cf11af
PM		 602
603#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
604#ifdef CONFIG_BLK_DEV_IDE_PMAC
605 ppc_ide_md.ide_init_hwif = pmac_ide_init_hwif_ports;
606 ppc_ide_md.default_io_base = pmac_ide_get_base;
607#endif /* CONFIG_BLK_DEV_IDE_PMAC */
608#endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
609
14cf11af
PM		 610 if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
611
612}
35499c01 613#endif
14cf11af 614
35499c01
PM		 615/*
616 * Early initialization.
617 */
618static void __init pmac_init_early(void)
619{
620#ifdef CONFIG_PPC64
621 /* Initialize hash table, from now on, we can take hash faults
622 * and call ioremap
623 */
624 hpte_init_native();
625
626 /* Init SCC */
627 if (strstr(cmd_line, "sccdbg")) {
628 sccdbg = 1;
629 udbg_init_scc(NULL);
630 }
631
632 /* Setup interrupt mapping options */
633 ppc64_interrupt_controller = IC_OPEN_PIC;
634
635 iommu_init_early_u3();
636#endif
637}
638
639static void __init pmac_progress(char *s, unsigned short hex)
14cf11af 640{
35499c01
PM		 641#ifdef CONFIG_PPC64
642 if (sccdbg) {
643 udbg_puts(s);
644 udbg_puts("\n");
645 return;
646 }
647#endif
648#ifdef CONFIG_BOOTX_TEXT
14cf11af
PM		 649 if (boot_text_mapped) {
650 btext_drawstring(s);
651 btext_drawchar('\n');
652 }
14cf11af 653#endif /* CONFIG_BOOTX_TEXT */
35499c01 654}
14cf11af 655
35499c01
PM		 656/*
657 * pmac has no legacy IO, anything calling this function has to
658 * fail or bad things will happen
659 */
660static int pmac_check_legacy_ioport(unsigned int baseport)
661{
662 return -ENODEV;
663}
664
665static int __init pmac_declare_of_platform_devices(void)
14cf11af 666{
98599013 667 struct device_node *np, *npp;
14cf11af
PM		 668
669 np = find_devices("uni-n");
670 if (np) {
671 for (np = np->child; np != NULL; np = np->sibling)
672 if (strncmp(np->name, "i2c", 3) == 0) {
673 of_platform_device_create(np, "uni-n-i2c",
674 NULL);
675 break;
676 }
677 }
35499c01
PM		 678 np = find_devices("valkyrie");
679 if (np)
680 of_platform_device_create(np, "valkyrie", NULL);
681 np = find_devices("platinum");
682 if (np)
683 of_platform_device_create(np, "platinum", NULL);
684
98599013
PM		 685 npp = of_find_node_by_name(NULL, "u3");
686 if (npp) {
687 for (np = NULL; (np = of_get_next_child(npp, np)) != NULL;) {
14cf11af 688 if (strncmp(np->name, "i2c", 3) == 0) {
98599013
PM		 689 of_platform_device_create(np, "u3-i2c", NULL);
690 of_node_put(np);
14cf11af
PM		 691 break;
692 }
98599013
PM		 693 }
694 of_node_put(npp);
14cf11af 695 }
35499c01
PM		 696 np = of_find_node_by_type(NULL, "smu");
697 if (np) {
698 of_platform_device_create(np, "smu", NULL);
699 of_node_put(np);
700 }
14cf11af
PM		 701
702 return 0;
703}
704
705device_initcall(pmac_declare_of_platform_devices);
35499c01
PM		 706
707/*
708 * Called very early, MMU is off, device-tree isn't unflattened
709 */
710static int __init pmac_probe(int platform)
711{
712#ifdef CONFIG_PPC64
713 if (platform != PLATFORM_POWERMAC)
714 return 0;
715
716 /*
717 * On U3, the DART (iommu) must be allocated now since it
718 * has an impact on htab_initialize (due to the large page it
719 * occupies having to be broken up so the DART itself is not
720 * part of the cacheable linar mapping
721 */
722 alloc_u3_dart_table();
723#endif
724
725#ifdef CONFIG_PMAC_SMU
726 /*
727 * SMU based G5s need some memory below 2Gb, at least the current
728 * driver needs that. We have to allocate it now. We allocate 4k
729 * (1 small page) for now.
730 */
731 smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
732#endif /* CONFIG_PMAC_SMU */
733
734 return 1;
735}
736
737#ifdef CONFIG_PPC64
738static int pmac_probe_mode(struct pci_bus *bus)
739{
740 struct device_node *node = bus->sysdata;
741
742 /* We need to use normal PCI probing for the AGP bus,
743 since the device for the AGP bridge isn't in the tree. */
744 if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
745 return PCI_PROBE_NORMAL;
746
747 return PCI_PROBE_DEVTREE;
748}
749#endif
750
751struct machdep_calls __initdata pmac_md = {
752#if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
753 .cpu_die = generic_mach_cpu_die,
754#endif
755 .probe = pmac_probe,
756 .setup_arch = pmac_setup_arch,
757 .init_early = pmac_init_early,
758 .show_cpuinfo = pmac_show_cpuinfo,
35499c01
PM		 759 .init_IRQ = pmac_pic_init,
760 .get_irq = mpic_get_irq, /* changed later */
761 .pcibios_fixup = pmac_pcibios_fixup,
762 .restart = pmac_restart,
763 .power_off = pmac_power_off,
764 .halt = pmac_halt,
765 .time_init = pmac_time_init,
766 .get_boot_time = pmac_get_boot_time,
767 .set_rtc_time = pmac_set_rtc_time,
768 .get_rtc_time = pmac_get_rtc_time,
769 .calibrate_decr = pmac_calibrate_decr,
770 .feature_call = pmac_do_feature_call,
771 .check_legacy_ioport = pmac_check_legacy_ioport,
772 .progress = pmac_progress,
773#ifdef CONFIG_PPC64
774 .pci_probe_mode = pmac_probe_mode,
775 .idle_loop = native_idle,
776 .enable_pmcs = power4_enable_pmcs,
3d1229d6
ME		 777#ifdef CONFIG_KEXEC
778 .machine_kexec = default_machine_kexec,
779 .machine_kexec_prepare = default_machine_kexec_prepare,
35499c01 780#endif
3d1229d6 781#endif /* CONFIG_PPC64 */
35499c01
PM		 782#ifdef CONFIG_PPC32
783 .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
784 .pcibios_after_init = pmac_pcibios_after_init,
785 .phys_mem_access_prot = pci_phys_mem_access_prot,
786#endif
787};
Linux kernel - Deliverables
This page took 0.109925 seconds and 5 git commands to generate.