Commit | Line | Data |
---|---|---|
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 | ||
14cf11af PM |
26 | #include <linux/init.h> |
27 | #include <linux/errno.h> | |
28 | #include <linux/sched.h> | |
29 | #include <linux/kernel.h> | |
30 | #include <linux/mm.h> | |
31 | #include <linux/stddef.h> | |
32 | #include <linux/unistd.h> | |
33 | #include <linux/ptrace.h> | |
34 | #include <linux/slab.h> | |
35 | #include <linux/user.h> | |
14cf11af PM |
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/initrd.h> | |
42 | #include <linux/vt_kern.h> | |
43 | #include <linux/console.h> | |
14cf11af PM |
44 | #include <linux/pci.h> |
45 | #include <linux/adb.h> | |
46 | #include <linux/cuda.h> | |
47 | #include <linux/pmu.h> | |
48 | #include <linux/irq.h> | |
49 | #include <linux/seq_file.h> | |
50 | #include <linux/root_dev.h> | |
51 | #include <linux/bitops.h> | |
52 | #include <linux/suspend.h> | |
5f867dc7 JL |
53 | #include <linux/of_device.h> |
54 | #include <linux/of_platform.h> | |
d9b2b2a2 | 55 | #include <linux/lmb.h> |
14cf11af PM |
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> | |
14cf11af PM |
68 | #include <asm/cputable.h> |
69 | #include <asm/btext.h> | |
70 | #include <asm/pmac_feature.h> | |
71 | #include <asm/time.h> | |
14cf11af | 72 | #include <asm/mmu_context.h> |
35499c01 PM |
73 | #include <asm/iommu.h> |
74 | #include <asm/smu.h> | |
75 | #include <asm/pmc.h> | |
51d3082f | 76 | #include <asm/udbg.h> |
14cf11af | 77 | |
3c3f42d6 | 78 | #include "pmac.h" |
14cf11af PM |
79 | |
80 | #undef SHOW_GATWICK_IRQS | |
81 | ||
14cf11af PM |
82 | int ppc_override_l2cr = 0; |
83 | int ppc_override_l2cr_value; | |
84 | int has_l2cache = 0; | |
85 | ||
d2515c80 | 86 | int pmac_newworld; |
9b6b563c | 87 | |
14cf11af PM |
88 | static int current_root_goodness = -1; |
89 | ||
35499c01 | 90 | extern struct machdep_calls pmac_md; |
14cf11af PM |
91 | |
92 | #define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */ | |
93 | ||
35499c01 | 94 | #ifdef CONFIG_PPC64 |
35499c01 | 95 | int sccdbg; |
14cf11af PM |
96 | #endif |
97 | ||
98 | sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN; | |
35499c01 PM |
99 | EXPORT_SYMBOL(sys_ctrler); |
100 | ||
101 | #ifdef CONFIG_PMAC_SMU | |
102 | unsigned long smu_cmdbuf_abs; | |
103 | EXPORT_SYMBOL(smu_cmdbuf_abs); | |
104 | #endif | |
14cf11af PM |
105 | |
106 | #ifdef CONFIG_SMP | |
107 | extern struct smp_ops_t psurge_smp_ops; | |
108 | extern struct smp_ops_t core99_smp_ops; | |
109 | #endif /* CONFIG_SMP */ | |
110 | ||
0dd194d0 | 111 | static void pmac_show_cpuinfo(struct seq_file *m) |
14cf11af PM |
112 | { |
113 | struct device_node *np; | |
018a3d1d | 114 | const char *pp; |
14cf11af | 115 | int plen; |
0dd194d0 PM |
116 | int mbmodel; |
117 | unsigned int mbflags; | |
14cf11af PM |
118 | char* mbname; |
119 | ||
0dd194d0 PM |
120 | mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, |
121 | PMAC_MB_INFO_MODEL, 0); | |
122 | mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, | |
123 | PMAC_MB_INFO_FLAGS, 0); | |
124 | if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, | |
125 | (long) &mbname) != 0) | |
14cf11af PM |
126 | mbname = "Unknown"; |
127 | ||
128 | /* find motherboard type */ | |
129 | seq_printf(m, "machine\t\t: "); | |
0dd194d0 | 130 | np = of_find_node_by_path("/"); |
14cf11af | 131 | if (np != NULL) { |
e2eb6392 | 132 | pp = of_get_property(np, "model", NULL); |
14cf11af PM |
133 | if (pp != NULL) |
134 | seq_printf(m, "%s\n", pp); | |
135 | else | |
136 | seq_printf(m, "PowerMac\n"); | |
e2eb6392 | 137 | pp = of_get_property(np, "compatible", &plen); |
14cf11af PM |
138 | if (pp != NULL) { |
139 | seq_printf(m, "motherboard\t:"); | |
140 | while (plen > 0) { | |
141 | int l = strlen(pp) + 1; | |
142 | seq_printf(m, " %s", pp); | |
143 | plen -= l; | |
144 | pp += l; | |
145 | } | |
146 | seq_printf(m, "\n"); | |
147 | } | |
0dd194d0 | 148 | of_node_put(np); |
14cf11af PM |
149 | } else |
150 | seq_printf(m, "PowerMac\n"); | |
151 | ||
152 | /* print parsed model */ | |
153 | seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname); | |
154 | seq_printf(m, "pmac flags\t: %08x\n", mbflags); | |
155 | ||
156 | /* find l2 cache info */ | |
0dd194d0 PM |
157 | np = of_find_node_by_name(NULL, "l2-cache"); |
158 | if (np == NULL) | |
159 | np = of_find_node_by_type(NULL, "cache"); | |
160 | if (np != NULL) { | |
e2eb6392 SR |
161 | const unsigned int *ic = |
162 | of_get_property(np, "i-cache-size", NULL); | |
163 | const unsigned int *dc = | |
164 | of_get_property(np, "d-cache-size", NULL); | |
14cf11af PM |
165 | seq_printf(m, "L2 cache\t:"); |
166 | has_l2cache = 1; | |
e2eb6392 | 167 | if (of_get_property(np, "cache-unified", NULL) != 0 && dc) { |
14cf11af PM |
168 | seq_printf(m, " %dK unified", *dc / 1024); |
169 | } else { | |
170 | if (ic) | |
171 | seq_printf(m, " %dK instruction", *ic / 1024); | |
172 | if (dc) | |
173 | seq_printf(m, "%s %dK data", | |
174 | (ic? " +": ""), *dc / 1024); | |
175 | } | |
e2eb6392 | 176 | pp = of_get_property(np, "ram-type", NULL); |
14cf11af PM |
177 | if (pp) |
178 | seq_printf(m, " %s", pp); | |
179 | seq_printf(m, "\n"); | |
0dd194d0 | 180 | of_node_put(np); |
14cf11af PM |
181 | } |
182 | ||
183 | /* Indicate newworld/oldworld */ | |
184 | seq_printf(m, "pmac-generation\t: %s\n", | |
185 | pmac_newworld ? "NewWorld" : "OldWorld"); | |
14cf11af PM |
186 | } |
187 | ||
35499c01 PM |
188 | #ifndef CONFIG_ADB_CUDA |
189 | int find_via_cuda(void) | |
190 | { | |
30686ba6 SR |
191 | struct device_node *dn = of_find_node_by_name(NULL, "via-cuda"); |
192 | ||
193 | if (!dn) | |
35499c01 | 194 | return 0; |
30686ba6 | 195 | of_node_put(dn); |
35499c01 PM |
196 | printk("WARNING ! Your machine is CUDA-based but your kernel\n"); |
197 | printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n"); | |
198 | return 0; | |
199 | } | |
200 | #endif | |
14cf11af | 201 | |
35499c01 PM |
202 | #ifndef CONFIG_ADB_PMU |
203 | int find_via_pmu(void) | |
14cf11af | 204 | { |
30686ba6 SR |
205 | struct device_node *dn = of_find_node_by_name(NULL, "via-pmu"); |
206 | ||
207 | if (!dn) | |
35499c01 | 208 | return 0; |
30686ba6 | 209 | of_node_put(dn); |
35499c01 PM |
210 | printk("WARNING ! Your machine is PMU-based but your kernel\n"); |
211 | printk(" wasn't compiled with CONFIG_ADB_PMU option !\n"); | |
a575b807 | 212 | return 0; |
35499c01 PM |
213 | } |
214 | #endif | |
14cf11af | 215 | |
35499c01 PM |
216 | #ifndef CONFIG_PMAC_SMU |
217 | int smu_init(void) | |
218 | { | |
219 | /* should check and warn if SMU is present */ | |
220 | return 0; | |
221 | } | |
222 | #endif | |
14cf11af | 223 | |
35499c01 PM |
224 | #ifdef CONFIG_PPC32 |
225 | static volatile u32 *sysctrl_regs; | |
14cf11af | 226 | |
35499c01 PM |
227 | static void __init ohare_init(void) |
228 | { | |
30686ba6 SR |
229 | struct device_node *dn; |
230 | ||
14cf11af PM |
231 | /* this area has the CPU identification register |
232 | and some registers used by smp boards */ | |
233 | sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000); | |
14cf11af | 234 | |
35499c01 PM |
235 | /* |
236 | * Turn on the L2 cache. | |
237 | * We assume that we have a PSX memory controller iff | |
238 | * we have an ohare I/O controller. | |
239 | */ | |
30686ba6 SR |
240 | dn = of_find_node_by_name(NULL, "ohare"); |
241 | if (dn) { | |
242 | of_node_put(dn); | |
35499c01 PM |
243 | if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) { |
244 | if (sysctrl_regs[4] & 0x10) | |
245 | sysctrl_regs[4] |= 0x04000020; | |
246 | else | |
247 | sysctrl_regs[4] |= 0x04000000; | |
248 | if(has_l2cache) | |
249 | printk(KERN_INFO "Level 2 cache enabled\n"); | |
250 | } | |
251 | } | |
252 | } | |
14cf11af | 253 | |
35499c01 PM |
254 | static void __init l2cr_init(void) |
255 | { | |
14cf11af PM |
256 | /* Checks "l2cr-value" property in the registry */ |
257 | if (cpu_has_feature(CPU_FTR_L2CR)) { | |
1658ab66 | 258 | struct device_node *np = of_find_node_by_name(NULL, "cpus"); |
14cf11af | 259 | if (np == 0) |
1658ab66 | 260 | np = of_find_node_by_type(NULL, "cpu"); |
14cf11af | 261 | if (np != 0) { |
018a3d1d | 262 | const unsigned int *l2cr = |
e2eb6392 | 263 | of_get_property(np, "l2cr-value", NULL); |
14cf11af PM |
264 | if (l2cr != 0) { |
265 | ppc_override_l2cr = 1; | |
266 | ppc_override_l2cr_value = *l2cr; | |
267 | _set_L2CR(0); | |
268 | _set_L2CR(ppc_override_l2cr_value); | |
269 | } | |
1658ab66 | 270 | of_node_put(np); |
14cf11af PM |
271 | } |
272 | } | |
273 | ||
274 | if (ppc_override_l2cr) | |
35499c01 PM |
275 | printk(KERN_INFO "L2CR overridden (0x%x), " |
276 | "backside cache is %s\n", | |
277 | ppc_override_l2cr_value, | |
278 | (ppc_override_l2cr_value & 0x80000000) | |
14cf11af | 279 | ? "enabled" : "disabled"); |
35499c01 PM |
280 | } |
281 | #endif | |
282 | ||
ff38e7c8 | 283 | static void __init pmac_setup_arch(void) |
35499c01 | 284 | { |
a575b807 | 285 | struct device_node *cpu, *ic; |
018a3d1d | 286 | const int *fp; |
35499c01 PM |
287 | unsigned long pvr; |
288 | ||
289 | pvr = PVR_VER(mfspr(SPRN_PVR)); | |
290 | ||
291 | /* Set loops_per_jiffy to a half-way reasonable value, | |
292 | for use until calibrate_delay gets called. */ | |
293 | loops_per_jiffy = 50000000 / HZ; | |
294 | cpu = of_find_node_by_type(NULL, "cpu"); | |
295 | if (cpu != NULL) { | |
e2eb6392 | 296 | fp = of_get_property(cpu, "clock-frequency", NULL); |
35499c01 PM |
297 | if (fp != NULL) { |
298 | if (pvr >= 0x30 && pvr < 0x80) | |
299 | /* PPC970 etc. */ | |
300 | loops_per_jiffy = *fp / (3 * HZ); | |
301 | else if (pvr == 4 || pvr >= 8) | |
302 | /* 604, G3, G4 etc. */ | |
303 | loops_per_jiffy = *fp / HZ; | |
304 | else | |
305 | /* 601, 603, etc. */ | |
306 | loops_per_jiffy = *fp / (2 * HZ); | |
307 | } | |
308 | of_node_put(cpu); | |
309 | } | |
310 | ||
a575b807 | 311 | /* See if newworld or oldworld */ |
22059a90 | 312 | ic = of_find_node_with_property(NULL, "interrupt-controller"); |
d2515c80 OH |
313 | if (ic) { |
314 | pmac_newworld = 1; | |
a575b807 | 315 | of_node_put(ic); |
d2515c80 | 316 | } |
a575b807 | 317 | |
35499c01 PM |
318 | /* Lookup PCI hosts */ |
319 | pmac_pci_init(); | |
320 | ||
321 | #ifdef CONFIG_PPC32 | |
322 | ohare_init(); | |
323 | l2cr_init(); | |
324 | #endif /* CONFIG_PPC32 */ | |
325 | ||
14cf11af | 326 | find_via_cuda(); |
14cf11af | 327 | find_via_pmu(); |
35499c01 PM |
328 | smu_init(); |
329 | ||
21e38dfe TB |
330 | #if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \ |
331 | defined(CONFIG_PPC64) | |
14cf11af PM |
332 | pmac_nvram_init(); |
333 | #endif | |
35499c01 PM |
334 | |
335 | #ifdef CONFIG_PPC32 | |
14cf11af PM |
336 | #ifdef CONFIG_BLK_DEV_INITRD |
337 | if (initrd_start) | |
338 | ROOT_DEV = Root_RAM0; | |
339 | else | |
340 | #endif | |
341 | ROOT_DEV = DEFAULT_ROOT_DEVICE; | |
35499c01 | 342 | #endif |
14cf11af PM |
343 | |
344 | #ifdef CONFIG_SMP | |
345 | /* Check for Core99 */ | |
30686ba6 SR |
346 | ic = of_find_node_by_name(NULL, "uni-n"); |
347 | if (!ic) | |
348 | ic = of_find_node_by_name(NULL, "u3"); | |
349 | if (!ic) | |
350 | ic = of_find_node_by_name(NULL, "u4"); | |
351 | if (ic) { | |
352 | of_node_put(ic); | |
7ed476d1 | 353 | smp_ops = &core99_smp_ops; |
30686ba6 | 354 | } |
35499c01 | 355 | #ifdef CONFIG_PPC32 |
c63c4faa PM |
356 | else { |
357 | /* | |
358 | * We have to set bits in cpu_possible_map here since the | |
359 | * secondary CPU(s) aren't in the device tree, and | |
360 | * setup_per_cpu_areas only allocates per-cpu data for | |
361 | * CPUs in the cpu_possible_map. | |
362 | */ | |
363 | int cpu; | |
364 | ||
365 | for (cpu = 1; cpu < 4 && cpu < NR_CPUS; ++cpu) | |
366 | cpu_set(cpu, cpu_possible_map); | |
7ed476d1 | 367 | smp_ops = &psurge_smp_ops; |
c63c4faa | 368 | } |
35499c01 | 369 | #endif |
14cf11af | 370 | #endif /* CONFIG_SMP */ |
e8222502 BH |
371 | |
372 | #ifdef CONFIG_ADB | |
373 | if (strstr(cmd_line, "adb_sync")) { | |
374 | extern int __adb_probe_sync; | |
375 | __adb_probe_sync = 1; | |
376 | } | |
377 | #endif /* CONFIG_ADB */ | |
14cf11af PM |
378 | } |
379 | ||
14cf11af | 380 | #ifdef CONFIG_SCSI |
405861a0 | 381 | void note_scsi_host(struct device_node *node, void *host) |
14cf11af | 382 | { |
14cf11af | 383 | } |
9b6b563c | 384 | EXPORT_SYMBOL(note_scsi_host); |
14cf11af PM |
385 | #endif |
386 | ||
35499c01 PM |
387 | static int initializing = 1; |
388 | ||
14cf11af PM |
389 | static int pmac_late_init(void) |
390 | { | |
391 | initializing = 0; | |
d9333afd JB |
392 | /* this is udbg (which is __init) and we can later use it during |
393 | * cpu hotplug (in smp_core99_kick_cpu) */ | |
394 | ppc_md.progress = NULL; | |
14cf11af PM |
395 | return 0; |
396 | } | |
d518b717 | 397 | machine_late_initcall(powermac, pmac_late_init); |
14cf11af | 398 | |
d7418031 SR |
399 | /* |
400 | * This is __init_refok because we check for "initializing" before | |
401 | * touching any of the __init sensitive things and "initializing" | |
402 | * will be false after __init time. This can't be __init because it | |
403 | * can be called whenever a disk is first accessed. | |
404 | */ | |
405 | void __init_refok note_bootable_part(dev_t dev, int part, int goodness) | |
14cf11af | 406 | { |
14cf11af PM |
407 | char *p; |
408 | ||
409 | if (!initializing) | |
410 | return; | |
411 | if ((goodness <= current_root_goodness) && | |
412 | ROOT_DEV != DEFAULT_ROOT_DEVICE) | |
413 | return; | |
b8757b21 ABL |
414 | p = strstr(boot_command_line, "root="); |
415 | if (p != NULL && (p == boot_command_line || p[-1] == ' ')) | |
14cf11af PM |
416 | return; |
417 | ||
6ee0d9f7 PM |
418 | ROOT_DEV = dev + part; |
419 | current_root_goodness = goodness; | |
14cf11af PM |
420 | } |
421 | ||
14cf11af | 422 | #ifdef CONFIG_ADB_CUDA |
35499c01 PM |
423 | static void cuda_restart(void) |
424 | { | |
14cf11af | 425 | struct adb_request req; |
14cf11af | 426 | |
35499c01 PM |
427 | cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM); |
428 | for (;;) | |
429 | cuda_poll(); | |
430 | } | |
431 | ||
432 | static void cuda_shutdown(void) | |
433 | { | |
434 | struct adb_request req; | |
435 | ||
436 | cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN); | |
437 | for (;;) | |
438 | cuda_poll(); | |
439 | } | |
440 | ||
441 | #else | |
442 | #define cuda_restart() | |
443 | #define cuda_shutdown() | |
444 | #endif | |
445 | ||
446 | #ifndef CONFIG_ADB_PMU | |
447 | #define pmu_restart() | |
448 | #define pmu_shutdown() | |
449 | #endif | |
450 | ||
451 | #ifndef CONFIG_PMAC_SMU | |
452 | #define smu_restart() | |
453 | #define smu_shutdown() | |
454 | #endif | |
455 | ||
456 | static void pmac_restart(char *cmd) | |
457 | { | |
14cf11af | 458 | switch (sys_ctrler) { |
14cf11af | 459 | case SYS_CTRLER_CUDA: |
35499c01 | 460 | cuda_restart(); |
14cf11af | 461 | break; |
14cf11af PM |
462 | case SYS_CTRLER_PMU: |
463 | pmu_restart(); | |
464 | break; | |
35499c01 PM |
465 | case SYS_CTRLER_SMU: |
466 | smu_restart(); | |
467 | break; | |
14cf11af PM |
468 | default: ; |
469 | } | |
470 | } | |
471 | ||
35499c01 | 472 | static void pmac_power_off(void) |
14cf11af | 473 | { |
14cf11af | 474 | switch (sys_ctrler) { |
14cf11af | 475 | case SYS_CTRLER_CUDA: |
35499c01 | 476 | cuda_shutdown(); |
14cf11af | 477 | break; |
14cf11af PM |
478 | case SYS_CTRLER_PMU: |
479 | pmu_shutdown(); | |
480 | break; | |
35499c01 PM |
481 | case SYS_CTRLER_SMU: |
482 | smu_shutdown(); | |
483 | break; | |
14cf11af PM |
484 | default: ; |
485 | } | |
486 | } | |
487 | ||
488 | static void | |
489 | pmac_halt(void) | |
490 | { | |
491 | pmac_power_off(); | |
492 | } | |
493 | ||
35499c01 PM |
494 | /* |
495 | * Early initialization. | |
496 | */ | |
497 | static void __init pmac_init_early(void) | |
498 | { | |
51d3082f BH |
499 | /* Enable early btext debug if requested */ |
500 | if (strstr(cmd_line, "btextdbg")) { | |
501 | udbg_adb_init_early(); | |
502 | register_early_udbg_console(); | |
35499c01 PM |
503 | } |
504 | ||
51d3082f BH |
505 | /* Probe motherboard chipset */ |
506 | pmac_feature_init(); | |
507 | ||
51d3082f BH |
508 | /* Initialize debug stuff */ |
509 | udbg_scc_init(!!strstr(cmd_line, "sccdbg")); | |
510 | udbg_adb_init(!!strstr(cmd_line, "btextdbg")); | |
511 | ||
512 | #ifdef CONFIG_PPC64 | |
1beb6a7d | 513 | iommu_init_early_dart(); |
35499c01 PM |
514 | #endif |
515 | } | |
516 | ||
35499c01 | 517 | static int __init pmac_declare_of_platform_devices(void) |
14cf11af | 518 | { |
a28d3af2 | 519 | struct device_node *np; |
14cf11af | 520 | |
e8222502 BH |
521 | if (machine_is(chrp)) |
522 | return -1; | |
523 | ||
730745a5 | 524 | np = of_find_node_by_name(NULL, "valkyrie"); |
35499c01 PM |
525 | if (np) |
526 | of_platform_device_create(np, "valkyrie", NULL); | |
730745a5 | 527 | np = of_find_node_by_name(NULL, "platinum"); |
35499c01 PM |
528 | if (np) |
529 | of_platform_device_create(np, "platinum", NULL); | |
35499c01 PM |
530 | np = of_find_node_by_type(NULL, "smu"); |
531 | if (np) { | |
532 | of_platform_device_create(np, "smu", NULL); | |
533 | of_node_put(np); | |
534 | } | |
14cf11af PM |
535 | |
536 | return 0; | |
537 | } | |
d518b717 | 538 | machine_device_initcall(powermac, pmac_declare_of_platform_devices); |
35499c01 | 539 | |
025d7917 BH |
540 | #ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE |
541 | /* | |
542 | * This is called very early, as part of console_init() (typically just after | |
543 | * time_init()). This function is respondible for trying to find a good | |
544 | * default console on serial ports. It tries to match the open firmware | |
545 | * default output with one of the available serial console drivers. | |
546 | */ | |
547 | static int __init check_pmac_serial_console(void) | |
548 | { | |
549 | struct device_node *prom_stdout = NULL; | |
550 | int offset = 0; | |
551 | const char *name; | |
552 | #ifdef CONFIG_SERIAL_PMACZILOG_TTYS | |
553 | char *devname = "ttyS"; | |
554 | #else | |
555 | char *devname = "ttyPZ"; | |
556 | #endif | |
557 | ||
558 | pr_debug(" -> check_pmac_serial_console()\n"); | |
559 | ||
560 | /* The user has requested a console so this is already set up. */ | |
561 | if (strstr(boot_command_line, "console=")) { | |
562 | pr_debug(" console was specified !\n"); | |
563 | return -EBUSY; | |
564 | } | |
565 | ||
566 | if (!of_chosen) { | |
567 | pr_debug(" of_chosen is NULL !\n"); | |
568 | return -ENODEV; | |
569 | } | |
570 | ||
571 | /* We are getting a weird phandle from OF ... */ | |
572 | /* ... So use the full path instead */ | |
573 | name = of_get_property(of_chosen, "linux,stdout-path", NULL); | |
574 | if (name == NULL) { | |
575 | pr_debug(" no linux,stdout-path !\n"); | |
576 | return -ENODEV; | |
577 | } | |
578 | prom_stdout = of_find_node_by_path(name); | |
579 | if (!prom_stdout) { | |
580 | pr_debug(" can't find stdout package %s !\n", name); | |
581 | return -ENODEV; | |
582 | } | |
583 | pr_debug("stdout is %s\n", prom_stdout->full_name); | |
584 | ||
585 | name = of_get_property(prom_stdout, "name", NULL); | |
586 | if (!name) { | |
587 | pr_debug(" stdout package has no name !\n"); | |
588 | goto not_found; | |
589 | } | |
590 | ||
591 | if (strcmp(name, "ch-a") == 0) | |
592 | offset = 0; | |
593 | else if (strcmp(name, "ch-b") == 0) | |
594 | offset = 1; | |
595 | else | |
596 | goto not_found; | |
597 | of_node_put(prom_stdout); | |
598 | ||
599 | pr_debug("Found serial console at %s%d\n", devname, offset); | |
600 | ||
601 | return add_preferred_console(devname, offset, NULL); | |
602 | ||
603 | not_found: | |
604 | pr_debug("No preferred console found !\n"); | |
605 | of_node_put(prom_stdout); | |
606 | return -ENODEV; | |
607 | } | |
608 | console_initcall(check_pmac_serial_console); | |
609 | ||
610 | #endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */ | |
611 | ||
35499c01 PM |
612 | /* |
613 | * Called very early, MMU is off, device-tree isn't unflattened | |
614 | */ | |
e8222502 | 615 | static int __init pmac_probe(void) |
35499c01 | 616 | { |
e8222502 BH |
617 | unsigned long root = of_get_flat_dt_root(); |
618 | ||
619 | if (!of_flat_dt_is_compatible(root, "Power Macintosh") && | |
620 | !of_flat_dt_is_compatible(root, "MacRISC")) | |
35499c01 PM |
621 | return 0; |
622 | ||
e8222502 | 623 | #ifdef CONFIG_PPC64 |
35499c01 PM |
624 | /* |
625 | * On U3, the DART (iommu) must be allocated now since it | |
626 | * has an impact on htab_initialize (due to the large page it | |
627 | * occupies having to be broken up so the DART itself is not | |
628 | * part of the cacheable linar mapping | |
629 | */ | |
1beb6a7d | 630 | alloc_dart_table(); |
7d0daae4 ME |
631 | |
632 | hpte_init_native(); | |
35499c01 PM |
633 | #endif |
634 | ||
e8222502 BH |
635 | #ifdef CONFIG_PPC32 |
636 | /* isa_io_base gets set in pmac_pci_init */ | |
e8222502 BH |
637 | ISA_DMA_THRESHOLD = ~0L; |
638 | DMA_MODE_READ = 1; | |
639 | DMA_MODE_WRITE = 2; | |
e8222502 BH |
640 | #endif /* CONFIG_PPC32 */ |
641 | ||
35499c01 PM |
642 | #ifdef CONFIG_PMAC_SMU |
643 | /* | |
644 | * SMU based G5s need some memory below 2Gb, at least the current | |
645 | * driver needs that. We have to allocate it now. We allocate 4k | |
646 | * (1 small page) for now. | |
647 | */ | |
648 | smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL); | |
649 | #endif /* CONFIG_PMAC_SMU */ | |
650 | ||
651 | return 1; | |
652 | } | |
653 | ||
654 | #ifdef CONFIG_PPC64 | |
51d3082f BH |
655 | /* Move that to pci.c */ |
656 | static int pmac_pci_probe_mode(struct pci_bus *bus) | |
35499c01 | 657 | { |
95272262 | 658 | struct device_node *node = pci_bus_to_OF_node(bus); |
35499c01 PM |
659 | |
660 | /* We need to use normal PCI probing for the AGP bus, | |
1beb6a7d | 661 | * since the device for the AGP bridge isn't in the tree. |
444532d4 | 662 | * Same for the PCIe host on U4 and the HT host bridge. |
1beb6a7d | 663 | */ |
55b61fec | 664 | if (bus->self == NULL && (of_device_is_compatible(node, "u3-agp") || |
444532d4 BH |
665 | of_device_is_compatible(node, "u4-pcie") || |
666 | of_device_is_compatible(node, "u3-ht"))) | |
35499c01 | 667 | return PCI_PROBE_NORMAL; |
35499c01 PM |
668 | return PCI_PROBE_DEVTREE; |
669 | } | |
d9333afd JB |
670 | |
671 | #ifdef CONFIG_HOTPLUG_CPU | |
672 | /* access per cpu vars from generic smp.c */ | |
673 | DECLARE_PER_CPU(int, cpu_state); | |
674 | ||
675 | static void pmac_cpu_die(void) | |
676 | { | |
677 | /* | |
678 | * turn off as much as possible, we'll be | |
679 | * kicked out as this will only be invoked | |
680 | * on core99 platforms for now ... | |
681 | */ | |
682 | ||
683 | printk(KERN_INFO "CPU#%d offline\n", smp_processor_id()); | |
684 | __get_cpu_var(cpu_state) = CPU_DEAD; | |
685 | smp_wmb(); | |
686 | ||
687 | /* | |
688 | * during the path that leads here preemption is disabled, | |
689 | * reenable it now so that when coming up preempt count is | |
690 | * zero correctly | |
691 | */ | |
692 | preempt_enable(); | |
693 | ||
694 | /* | |
695 | * hard-disable interrupts for the non-NAP case, the NAP code | |
696 | * needs to re-enable interrupts (but soft-disables them) | |
697 | */ | |
698 | hard_irq_disable(); | |
699 | ||
700 | while (1) { | |
701 | /* let's not take timer interrupts too often ... */ | |
702 | set_dec(0x7fffffff); | |
703 | ||
704 | /* should always be true at this point */ | |
705 | if (cpu_has_feature(CPU_FTR_CAN_NAP)) | |
706 | power4_cpu_offline_powersave(); | |
707 | else { | |
708 | HMT_low(); | |
709 | HMT_very_low(); | |
710 | } | |
711 | } | |
712 | } | |
713 | #endif /* CONFIG_HOTPLUG_CPU */ | |
714 | ||
715 | #endif /* CONFIG_PPC64 */ | |
35499c01 | 716 | |
e8222502 BH |
717 | define_machine(powermac) { |
718 | .name = "PowerMac", | |
35499c01 PM |
719 | .probe = pmac_probe, |
720 | .setup_arch = pmac_setup_arch, | |
721 | .init_early = pmac_init_early, | |
722 | .show_cpuinfo = pmac_show_cpuinfo, | |
35499c01 | 723 | .init_IRQ = pmac_pic_init, |
cc5d0189 | 724 | .get_irq = NULL, /* changed later */ |
f90bb153 | 725 | .pci_irq_fixup = pmac_pci_irq_fixup, |
35499c01 PM |
726 | .restart = pmac_restart, |
727 | .power_off = pmac_power_off, | |
728 | .halt = pmac_halt, | |
729 | .time_init = pmac_time_init, | |
730 | .get_boot_time = pmac_get_boot_time, | |
731 | .set_rtc_time = pmac_set_rtc_time, | |
732 | .get_rtc_time = pmac_get_rtc_time, | |
733 | .calibrate_decr = pmac_calibrate_decr, | |
734 | .feature_call = pmac_do_feature_call, | |
be6b8439 | 735 | .progress = udbg_progress, |
35499c01 | 736 | #ifdef CONFIG_PPC64 |
51d3082f | 737 | .pci_probe_mode = pmac_pci_probe_mode, |
a0652fc9 | 738 | .power_save = power4_idle, |
35499c01 | 739 | .enable_pmcs = power4_enable_pmcs, |
3d1229d6 | 740 | #endif /* CONFIG_PPC64 */ |
35499c01 PM |
741 | #ifdef CONFIG_PPC32 |
742 | .pcibios_enable_device_hook = pmac_pci_enable_device_hook, | |
743 | .pcibios_after_init = pmac_pcibios_after_init, | |
744 | .phys_mem_access_prot = pci_phys_mem_access_prot, | |
745 | #endif | |
e8222502 | 746 | #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64) |
d9333afd | 747 | .cpu_die = pmac_cpu_die, |
e8222502 | 748 | #endif |
4c4ece3c GP |
749 | #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC32) |
750 | .cpu_die = generic_mach_cpu_die, | |
751 | #endif | |
35499c01 | 752 | }; |