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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> | |
66b15db6 | 34 | #include <linux/export.h> |
14cf11af | 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> | |
95f72d1e | 55 | #include <linux/memblock.h> |
14cf11af PM |
56 | |
57 | #include <asm/reg.h> | |
58 | #include <asm/sections.h> | |
59 | #include <asm/prom.h> | |
14cf11af PM |
60 | #include <asm/pgtable.h> |
61 | #include <asm/io.h> | |
62 | #include <asm/pci-bridge.h> | |
63 | #include <asm/ohare.h> | |
64 | #include <asm/mediabay.h> | |
65 | #include <asm/machdep.h> | |
66 | #include <asm/dma.h> | |
14cf11af PM |
67 | #include <asm/cputable.h> |
68 | #include <asm/btext.h> | |
69 | #include <asm/pmac_feature.h> | |
70 | #include <asm/time.h> | |
14cf11af | 71 | #include <asm/mmu_context.h> |
35499c01 PM |
72 | #include <asm/iommu.h> |
73 | #include <asm/smu.h> | |
74 | #include <asm/pmc.h> | |
51d3082f | 75 | #include <asm/udbg.h> |
14cf11af | 76 | |
3c3f42d6 | 77 | #include "pmac.h" |
14cf11af PM |
78 | |
79 | #undef SHOW_GATWICK_IRQS | |
80 | ||
14cf11af PM |
81 | int ppc_override_l2cr = 0; |
82 | int ppc_override_l2cr_value; | |
83 | int has_l2cache = 0; | |
84 | ||
d2515c80 | 85 | int pmac_newworld; |
9b6b563c | 86 | |
14cf11af PM |
87 | static int current_root_goodness = -1; |
88 | ||
35499c01 | 89 | extern struct machdep_calls pmac_md; |
14cf11af PM |
90 | |
91 | #define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */ | |
92 | ||
35499c01 | 93 | #ifdef CONFIG_PPC64 |
35499c01 | 94 | int sccdbg; |
14cf11af PM |
95 | #endif |
96 | ||
97 | sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN; | |
35499c01 PM |
98 | EXPORT_SYMBOL(sys_ctrler); |
99 | ||
100 | #ifdef CONFIG_PMAC_SMU | |
101 | unsigned long smu_cmdbuf_abs; | |
102 | EXPORT_SYMBOL(smu_cmdbuf_abs); | |
103 | #endif | |
14cf11af | 104 | |
0dd194d0 | 105 | static void pmac_show_cpuinfo(struct seq_file *m) |
14cf11af PM |
106 | { |
107 | struct device_node *np; | |
018a3d1d | 108 | const char *pp; |
14cf11af | 109 | int plen; |
0dd194d0 PM |
110 | int mbmodel; |
111 | unsigned int mbflags; | |
14cf11af PM |
112 | char* mbname; |
113 | ||
0dd194d0 PM |
114 | mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, |
115 | PMAC_MB_INFO_MODEL, 0); | |
116 | mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, | |
117 | PMAC_MB_INFO_FLAGS, 0); | |
118 | if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME, | |
119 | (long) &mbname) != 0) | |
14cf11af PM |
120 | mbname = "Unknown"; |
121 | ||
122 | /* find motherboard type */ | |
123 | seq_printf(m, "machine\t\t: "); | |
0dd194d0 | 124 | np = of_find_node_by_path("/"); |
14cf11af | 125 | if (np != NULL) { |
e2eb6392 | 126 | pp = of_get_property(np, "model", NULL); |
14cf11af PM |
127 | if (pp != NULL) |
128 | seq_printf(m, "%s\n", pp); | |
129 | else | |
130 | seq_printf(m, "PowerMac\n"); | |
e2eb6392 | 131 | pp = of_get_property(np, "compatible", &plen); |
14cf11af PM |
132 | if (pp != NULL) { |
133 | seq_printf(m, "motherboard\t:"); | |
134 | while (plen > 0) { | |
135 | int l = strlen(pp) + 1; | |
136 | seq_printf(m, " %s", pp); | |
137 | plen -= l; | |
138 | pp += l; | |
139 | } | |
140 | seq_printf(m, "\n"); | |
141 | } | |
0dd194d0 | 142 | of_node_put(np); |
14cf11af PM |
143 | } else |
144 | seq_printf(m, "PowerMac\n"); | |
145 | ||
146 | /* print parsed model */ | |
147 | seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname); | |
148 | seq_printf(m, "pmac flags\t: %08x\n", mbflags); | |
149 | ||
150 | /* find l2 cache info */ | |
0dd194d0 PM |
151 | np = of_find_node_by_name(NULL, "l2-cache"); |
152 | if (np == NULL) | |
153 | np = of_find_node_by_type(NULL, "cache"); | |
154 | if (np != NULL) { | |
e2eb6392 SR |
155 | const unsigned int *ic = |
156 | of_get_property(np, "i-cache-size", NULL); | |
157 | const unsigned int *dc = | |
158 | of_get_property(np, "d-cache-size", NULL); | |
14cf11af PM |
159 | seq_printf(m, "L2 cache\t:"); |
160 | has_l2cache = 1; | |
e2eb6392 | 161 | if (of_get_property(np, "cache-unified", NULL) != 0 && dc) { |
14cf11af PM |
162 | seq_printf(m, " %dK unified", *dc / 1024); |
163 | } else { | |
164 | if (ic) | |
165 | seq_printf(m, " %dK instruction", *ic / 1024); | |
166 | if (dc) | |
167 | seq_printf(m, "%s %dK data", | |
168 | (ic? " +": ""), *dc / 1024); | |
169 | } | |
e2eb6392 | 170 | pp = of_get_property(np, "ram-type", NULL); |
14cf11af PM |
171 | if (pp) |
172 | seq_printf(m, " %s", pp); | |
173 | seq_printf(m, "\n"); | |
0dd194d0 | 174 | of_node_put(np); |
14cf11af PM |
175 | } |
176 | ||
177 | /* Indicate newworld/oldworld */ | |
178 | seq_printf(m, "pmac-generation\t: %s\n", | |
179 | pmac_newworld ? "NewWorld" : "OldWorld"); | |
14cf11af PM |
180 | } |
181 | ||
35499c01 PM |
182 | #ifndef CONFIG_ADB_CUDA |
183 | int find_via_cuda(void) | |
184 | { | |
30686ba6 SR |
185 | struct device_node *dn = of_find_node_by_name(NULL, "via-cuda"); |
186 | ||
187 | if (!dn) | |
35499c01 | 188 | return 0; |
30686ba6 | 189 | of_node_put(dn); |
35499c01 PM |
190 | printk("WARNING ! Your machine is CUDA-based but your kernel\n"); |
191 | printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n"); | |
192 | return 0; | |
193 | } | |
194 | #endif | |
14cf11af | 195 | |
35499c01 PM |
196 | #ifndef CONFIG_ADB_PMU |
197 | int find_via_pmu(void) | |
14cf11af | 198 | { |
30686ba6 SR |
199 | struct device_node *dn = of_find_node_by_name(NULL, "via-pmu"); |
200 | ||
201 | if (!dn) | |
35499c01 | 202 | return 0; |
30686ba6 | 203 | of_node_put(dn); |
35499c01 PM |
204 | printk("WARNING ! Your machine is PMU-based but your kernel\n"); |
205 | printk(" wasn't compiled with CONFIG_ADB_PMU option !\n"); | |
a575b807 | 206 | return 0; |
35499c01 PM |
207 | } |
208 | #endif | |
14cf11af | 209 | |
35499c01 PM |
210 | #ifndef CONFIG_PMAC_SMU |
211 | int smu_init(void) | |
212 | { | |
213 | /* should check and warn if SMU is present */ | |
214 | return 0; | |
215 | } | |
216 | #endif | |
14cf11af | 217 | |
35499c01 PM |
218 | #ifdef CONFIG_PPC32 |
219 | static volatile u32 *sysctrl_regs; | |
14cf11af | 220 | |
35499c01 PM |
221 | static void __init ohare_init(void) |
222 | { | |
30686ba6 SR |
223 | struct device_node *dn; |
224 | ||
14cf11af PM |
225 | /* this area has the CPU identification register |
226 | and some registers used by smp boards */ | |
227 | sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000); | |
14cf11af | 228 | |
35499c01 PM |
229 | /* |
230 | * Turn on the L2 cache. | |
231 | * We assume that we have a PSX memory controller iff | |
232 | * we have an ohare I/O controller. | |
233 | */ | |
30686ba6 SR |
234 | dn = of_find_node_by_name(NULL, "ohare"); |
235 | if (dn) { | |
236 | of_node_put(dn); | |
35499c01 PM |
237 | if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) { |
238 | if (sysctrl_regs[4] & 0x10) | |
239 | sysctrl_regs[4] |= 0x04000020; | |
240 | else | |
241 | sysctrl_regs[4] |= 0x04000000; | |
242 | if(has_l2cache) | |
243 | printk(KERN_INFO "Level 2 cache enabled\n"); | |
244 | } | |
245 | } | |
246 | } | |
14cf11af | 247 | |
35499c01 PM |
248 | static void __init l2cr_init(void) |
249 | { | |
14cf11af PM |
250 | /* Checks "l2cr-value" property in the registry */ |
251 | if (cpu_has_feature(CPU_FTR_L2CR)) { | |
1658ab66 | 252 | struct device_node *np = of_find_node_by_name(NULL, "cpus"); |
14cf11af | 253 | if (np == 0) |
1658ab66 | 254 | np = of_find_node_by_type(NULL, "cpu"); |
14cf11af | 255 | if (np != 0) { |
018a3d1d | 256 | const unsigned int *l2cr = |
e2eb6392 | 257 | of_get_property(np, "l2cr-value", NULL); |
14cf11af PM |
258 | if (l2cr != 0) { |
259 | ppc_override_l2cr = 1; | |
260 | ppc_override_l2cr_value = *l2cr; | |
261 | _set_L2CR(0); | |
262 | _set_L2CR(ppc_override_l2cr_value); | |
263 | } | |
1658ab66 | 264 | of_node_put(np); |
14cf11af PM |
265 | } |
266 | } | |
267 | ||
268 | if (ppc_override_l2cr) | |
35499c01 PM |
269 | printk(KERN_INFO "L2CR overridden (0x%x), " |
270 | "backside cache is %s\n", | |
271 | ppc_override_l2cr_value, | |
272 | (ppc_override_l2cr_value & 0x80000000) | |
14cf11af | 273 | ? "enabled" : "disabled"); |
35499c01 PM |
274 | } |
275 | #endif | |
276 | ||
ff38e7c8 | 277 | static void __init pmac_setup_arch(void) |
35499c01 | 278 | { |
a575b807 | 279 | struct device_node *cpu, *ic; |
018a3d1d | 280 | const int *fp; |
35499c01 PM |
281 | unsigned long pvr; |
282 | ||
283 | pvr = PVR_VER(mfspr(SPRN_PVR)); | |
284 | ||
285 | /* Set loops_per_jiffy to a half-way reasonable value, | |
286 | for use until calibrate_delay gets called. */ | |
287 | loops_per_jiffy = 50000000 / HZ; | |
288 | cpu = of_find_node_by_type(NULL, "cpu"); | |
289 | if (cpu != NULL) { | |
e2eb6392 | 290 | fp = of_get_property(cpu, "clock-frequency", NULL); |
35499c01 PM |
291 | if (fp != NULL) { |
292 | if (pvr >= 0x30 && pvr < 0x80) | |
293 | /* PPC970 etc. */ | |
294 | loops_per_jiffy = *fp / (3 * HZ); | |
295 | else if (pvr == 4 || pvr >= 8) | |
296 | /* 604, G3, G4 etc. */ | |
297 | loops_per_jiffy = *fp / HZ; | |
298 | else | |
299 | /* 601, 603, etc. */ | |
300 | loops_per_jiffy = *fp / (2 * HZ); | |
301 | } | |
302 | of_node_put(cpu); | |
303 | } | |
304 | ||
a575b807 | 305 | /* See if newworld or oldworld */ |
22059a90 | 306 | ic = of_find_node_with_property(NULL, "interrupt-controller"); |
d2515c80 OH |
307 | if (ic) { |
308 | pmac_newworld = 1; | |
a575b807 | 309 | of_node_put(ic); |
d2515c80 | 310 | } |
a575b807 | 311 | |
35499c01 PM |
312 | /* Lookup PCI hosts */ |
313 | pmac_pci_init(); | |
314 | ||
315 | #ifdef CONFIG_PPC32 | |
316 | ohare_init(); | |
317 | l2cr_init(); | |
318 | #endif /* CONFIG_PPC32 */ | |
319 | ||
14cf11af | 320 | find_via_cuda(); |
14cf11af | 321 | find_via_pmu(); |
35499c01 PM |
322 | smu_init(); |
323 | ||
21e38dfe TB |
324 | #if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \ |
325 | defined(CONFIG_PPC64) | |
14cf11af PM |
326 | pmac_nvram_init(); |
327 | #endif | |
35499c01 PM |
328 | |
329 | #ifdef CONFIG_PPC32 | |
14cf11af PM |
330 | #ifdef CONFIG_BLK_DEV_INITRD |
331 | if (initrd_start) | |
332 | ROOT_DEV = Root_RAM0; | |
333 | else | |
334 | #endif | |
335 | ROOT_DEV = DEFAULT_ROOT_DEVICE; | |
35499c01 | 336 | #endif |
14cf11af | 337 | |
e8222502 BH |
338 | #ifdef CONFIG_ADB |
339 | if (strstr(cmd_line, "adb_sync")) { | |
340 | extern int __adb_probe_sync; | |
341 | __adb_probe_sync = 1; | |
342 | } | |
343 | #endif /* CONFIG_ADB */ | |
14cf11af PM |
344 | } |
345 | ||
14cf11af | 346 | #ifdef CONFIG_SCSI |
405861a0 | 347 | void note_scsi_host(struct device_node *node, void *host) |
14cf11af | 348 | { |
14cf11af | 349 | } |
9b6b563c | 350 | EXPORT_SYMBOL(note_scsi_host); |
14cf11af PM |
351 | #endif |
352 | ||
35499c01 PM |
353 | static int initializing = 1; |
354 | ||
14cf11af PM |
355 | static int pmac_late_init(void) |
356 | { | |
357 | initializing = 0; | |
14cf11af PM |
358 | return 0; |
359 | } | |
d518b717 | 360 | machine_late_initcall(powermac, pmac_late_init); |
14cf11af | 361 | |
d7418031 SR |
362 | /* |
363 | * This is __init_refok because we check for "initializing" before | |
364 | * touching any of the __init sensitive things and "initializing" | |
365 | * will be false after __init time. This can't be __init because it | |
366 | * can be called whenever a disk is first accessed. | |
367 | */ | |
368 | void __init_refok note_bootable_part(dev_t dev, int part, int goodness) | |
14cf11af | 369 | { |
14cf11af PM |
370 | char *p; |
371 | ||
372 | if (!initializing) | |
373 | return; | |
374 | if ((goodness <= current_root_goodness) && | |
375 | ROOT_DEV != DEFAULT_ROOT_DEVICE) | |
376 | return; | |
b8757b21 ABL |
377 | p = strstr(boot_command_line, "root="); |
378 | if (p != NULL && (p == boot_command_line || p[-1] == ' ')) | |
14cf11af PM |
379 | return; |
380 | ||
6ee0d9f7 PM |
381 | ROOT_DEV = dev + part; |
382 | current_root_goodness = goodness; | |
14cf11af PM |
383 | } |
384 | ||
14cf11af | 385 | #ifdef CONFIG_ADB_CUDA |
35499c01 PM |
386 | static void cuda_restart(void) |
387 | { | |
14cf11af | 388 | struct adb_request req; |
14cf11af | 389 | |
35499c01 PM |
390 | cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM); |
391 | for (;;) | |
392 | cuda_poll(); | |
393 | } | |
394 | ||
395 | static void cuda_shutdown(void) | |
396 | { | |
397 | struct adb_request req; | |
398 | ||
399 | cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN); | |
400 | for (;;) | |
401 | cuda_poll(); | |
402 | } | |
403 | ||
404 | #else | |
405 | #define cuda_restart() | |
406 | #define cuda_shutdown() | |
407 | #endif | |
408 | ||
409 | #ifndef CONFIG_ADB_PMU | |
410 | #define pmu_restart() | |
411 | #define pmu_shutdown() | |
412 | #endif | |
413 | ||
414 | #ifndef CONFIG_PMAC_SMU | |
415 | #define smu_restart() | |
416 | #define smu_shutdown() | |
417 | #endif | |
418 | ||
419 | static void pmac_restart(char *cmd) | |
420 | { | |
14cf11af | 421 | switch (sys_ctrler) { |
14cf11af | 422 | case SYS_CTRLER_CUDA: |
35499c01 | 423 | cuda_restart(); |
14cf11af | 424 | break; |
14cf11af PM |
425 | case SYS_CTRLER_PMU: |
426 | pmu_restart(); | |
427 | break; | |
35499c01 PM |
428 | case SYS_CTRLER_SMU: |
429 | smu_restart(); | |
430 | break; | |
14cf11af PM |
431 | default: ; |
432 | } | |
433 | } | |
434 | ||
35499c01 | 435 | static void pmac_power_off(void) |
14cf11af | 436 | { |
14cf11af | 437 | switch (sys_ctrler) { |
14cf11af | 438 | case SYS_CTRLER_CUDA: |
35499c01 | 439 | cuda_shutdown(); |
14cf11af | 440 | break; |
14cf11af PM |
441 | case SYS_CTRLER_PMU: |
442 | pmu_shutdown(); | |
443 | break; | |
35499c01 PM |
444 | case SYS_CTRLER_SMU: |
445 | smu_shutdown(); | |
446 | break; | |
14cf11af PM |
447 | default: ; |
448 | } | |
449 | } | |
450 | ||
451 | static void | |
452 | pmac_halt(void) | |
453 | { | |
454 | pmac_power_off(); | |
455 | } | |
456 | ||
35499c01 PM |
457 | /* |
458 | * Early initialization. | |
459 | */ | |
460 | static void __init pmac_init_early(void) | |
461 | { | |
51d3082f BH |
462 | /* Enable early btext debug if requested */ |
463 | if (strstr(cmd_line, "btextdbg")) { | |
464 | udbg_adb_init_early(); | |
465 | register_early_udbg_console(); | |
35499c01 PM |
466 | } |
467 | ||
51d3082f BH |
468 | /* Probe motherboard chipset */ |
469 | pmac_feature_init(); | |
470 | ||
51d3082f BH |
471 | /* Initialize debug stuff */ |
472 | udbg_scc_init(!!strstr(cmd_line, "sccdbg")); | |
473 | udbg_adb_init(!!strstr(cmd_line, "btextdbg")); | |
474 | ||
475 | #ifdef CONFIG_PPC64 | |
1beb6a7d | 476 | iommu_init_early_dart(); |
35499c01 | 477 | #endif |
7ccbe504 BH |
478 | |
479 | /* SMP Init has to be done early as we need to patch up | |
828a6986 | 480 | * cpu_possible_mask before interrupt stacks are allocated |
7ccbe504 BH |
481 | * or kaboom... |
482 | */ | |
483 | #ifdef CONFIG_SMP | |
484 | pmac_setup_smp(); | |
485 | #endif | |
35499c01 PM |
486 | } |
487 | ||
35499c01 | 488 | static int __init pmac_declare_of_platform_devices(void) |
14cf11af | 489 | { |
a28d3af2 | 490 | struct device_node *np; |
14cf11af | 491 | |
e8222502 BH |
492 | if (machine_is(chrp)) |
493 | return -1; | |
494 | ||
730745a5 | 495 | np = of_find_node_by_name(NULL, "valkyrie"); |
3631cb83 | 496 | if (np) { |
35499c01 | 497 | of_platform_device_create(np, "valkyrie", NULL); |
3631cb83 JL |
498 | of_node_put(np); |
499 | } | |
730745a5 | 500 | np = of_find_node_by_name(NULL, "platinum"); |
3631cb83 | 501 | if (np) { |
35499c01 | 502 | of_platform_device_create(np, "platinum", NULL); |
3631cb83 JL |
503 | of_node_put(np); |
504 | } | |
35499c01 PM |
505 | np = of_find_node_by_type(NULL, "smu"); |
506 | if (np) { | |
507 | of_platform_device_create(np, "smu", NULL); | |
508 | of_node_put(np); | |
509 | } | |
98b14d6b MZ |
510 | np = of_find_node_by_type(NULL, "fcu"); |
511 | if (np == NULL) { | |
512 | /* Some machines have strangely broken device-tree */ | |
513 | np = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/fan@15e"); | |
514 | } | |
515 | if (np) { | |
516 | of_platform_device_create(np, "temperature", NULL); | |
517 | of_node_put(np); | |
518 | } | |
14cf11af PM |
519 | |
520 | return 0; | |
521 | } | |
d518b717 | 522 | machine_device_initcall(powermac, pmac_declare_of_platform_devices); |
35499c01 | 523 | |
025d7917 BH |
524 | #ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE |
525 | /* | |
526 | * This is called very early, as part of console_init() (typically just after | |
527 | * time_init()). This function is respondible for trying to find a good | |
528 | * default console on serial ports. It tries to match the open firmware | |
529 | * default output with one of the available serial console drivers. | |
530 | */ | |
531 | static int __init check_pmac_serial_console(void) | |
532 | { | |
533 | struct device_node *prom_stdout = NULL; | |
534 | int offset = 0; | |
535 | const char *name; | |
536 | #ifdef CONFIG_SERIAL_PMACZILOG_TTYS | |
537 | char *devname = "ttyS"; | |
538 | #else | |
539 | char *devname = "ttyPZ"; | |
540 | #endif | |
541 | ||
542 | pr_debug(" -> check_pmac_serial_console()\n"); | |
543 | ||
544 | /* The user has requested a console so this is already set up. */ | |
545 | if (strstr(boot_command_line, "console=")) { | |
546 | pr_debug(" console was specified !\n"); | |
547 | return -EBUSY; | |
548 | } | |
549 | ||
550 | if (!of_chosen) { | |
551 | pr_debug(" of_chosen is NULL !\n"); | |
552 | return -ENODEV; | |
553 | } | |
554 | ||
555 | /* We are getting a weird phandle from OF ... */ | |
556 | /* ... So use the full path instead */ | |
557 | name = of_get_property(of_chosen, "linux,stdout-path", NULL); | |
558 | if (name == NULL) { | |
559 | pr_debug(" no linux,stdout-path !\n"); | |
560 | return -ENODEV; | |
561 | } | |
562 | prom_stdout = of_find_node_by_path(name); | |
563 | if (!prom_stdout) { | |
564 | pr_debug(" can't find stdout package %s !\n", name); | |
565 | return -ENODEV; | |
566 | } | |
567 | pr_debug("stdout is %s\n", prom_stdout->full_name); | |
568 | ||
569 | name = of_get_property(prom_stdout, "name", NULL); | |
570 | if (!name) { | |
571 | pr_debug(" stdout package has no name !\n"); | |
572 | goto not_found; | |
573 | } | |
574 | ||
575 | if (strcmp(name, "ch-a") == 0) | |
576 | offset = 0; | |
577 | else if (strcmp(name, "ch-b") == 0) | |
578 | offset = 1; | |
579 | else | |
580 | goto not_found; | |
581 | of_node_put(prom_stdout); | |
582 | ||
583 | pr_debug("Found serial console at %s%d\n", devname, offset); | |
584 | ||
585 | return add_preferred_console(devname, offset, NULL); | |
586 | ||
587 | not_found: | |
588 | pr_debug("No preferred console found !\n"); | |
589 | of_node_put(prom_stdout); | |
590 | return -ENODEV; | |
591 | } | |
592 | console_initcall(check_pmac_serial_console); | |
593 | ||
594 | #endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */ | |
595 | ||
35499c01 PM |
596 | /* |
597 | * Called very early, MMU is off, device-tree isn't unflattened | |
598 | */ | |
e8222502 | 599 | static int __init pmac_probe(void) |
35499c01 | 600 | { |
e8222502 BH |
601 | unsigned long root = of_get_flat_dt_root(); |
602 | ||
603 | if (!of_flat_dt_is_compatible(root, "Power Macintosh") && | |
604 | !of_flat_dt_is_compatible(root, "MacRISC")) | |
35499c01 PM |
605 | return 0; |
606 | ||
e8222502 | 607 | #ifdef CONFIG_PPC64 |
35499c01 PM |
608 | /* |
609 | * On U3, the DART (iommu) must be allocated now since it | |
610 | * has an impact on htab_initialize (due to the large page it | |
611 | * occupies having to be broken up so the DART itself is not | |
612 | * part of the cacheable linar mapping | |
613 | */ | |
1beb6a7d | 614 | alloc_dart_table(); |
7d0daae4 ME |
615 | |
616 | hpte_init_native(); | |
35499c01 PM |
617 | #endif |
618 | ||
e8222502 BH |
619 | #ifdef CONFIG_PPC32 |
620 | /* isa_io_base gets set in pmac_pci_init */ | |
e8222502 BH |
621 | ISA_DMA_THRESHOLD = ~0L; |
622 | DMA_MODE_READ = 1; | |
623 | DMA_MODE_WRITE = 2; | |
e8222502 BH |
624 | #endif /* CONFIG_PPC32 */ |
625 | ||
35499c01 PM |
626 | #ifdef CONFIG_PMAC_SMU |
627 | /* | |
628 | * SMU based G5s need some memory below 2Gb, at least the current | |
629 | * driver needs that. We have to allocate it now. We allocate 4k | |
630 | * (1 small page) for now. | |
631 | */ | |
95f72d1e | 632 | smu_cmdbuf_abs = memblock_alloc_base(4096, 4096, 0x80000000UL); |
35499c01 PM |
633 | #endif /* CONFIG_PMAC_SMU */ |
634 | ||
635 | return 1; | |
636 | } | |
637 | ||
638 | #ifdef CONFIG_PPC64 | |
51d3082f BH |
639 | /* Move that to pci.c */ |
640 | static int pmac_pci_probe_mode(struct pci_bus *bus) | |
35499c01 | 641 | { |
95272262 | 642 | struct device_node *node = pci_bus_to_OF_node(bus); |
35499c01 PM |
643 | |
644 | /* We need to use normal PCI probing for the AGP bus, | |
1beb6a7d | 645 | * since the device for the AGP bridge isn't in the tree. |
444532d4 | 646 | * Same for the PCIe host on U4 and the HT host bridge. |
1beb6a7d | 647 | */ |
55b61fec | 648 | if (bus->self == NULL && (of_device_is_compatible(node, "u3-agp") || |
444532d4 BH |
649 | of_device_is_compatible(node, "u4-pcie") || |
650 | of_device_is_compatible(node, "u3-ht"))) | |
35499c01 | 651 | return PCI_PROBE_NORMAL; |
35499c01 PM |
652 | return PCI_PROBE_DEVTREE; |
653 | } | |
d9333afd | 654 | #endif /* CONFIG_PPC64 */ |
35499c01 | 655 | |
e8222502 BH |
656 | define_machine(powermac) { |
657 | .name = "PowerMac", | |
35499c01 PM |
658 | .probe = pmac_probe, |
659 | .setup_arch = pmac_setup_arch, | |
660 | .init_early = pmac_init_early, | |
661 | .show_cpuinfo = pmac_show_cpuinfo, | |
35499c01 | 662 | .init_IRQ = pmac_pic_init, |
cc5d0189 | 663 | .get_irq = NULL, /* changed later */ |
f90bb153 | 664 | .pci_irq_fixup = pmac_pci_irq_fixup, |
35499c01 PM |
665 | .restart = pmac_restart, |
666 | .power_off = pmac_power_off, | |
667 | .halt = pmac_halt, | |
668 | .time_init = pmac_time_init, | |
669 | .get_boot_time = pmac_get_boot_time, | |
670 | .set_rtc_time = pmac_set_rtc_time, | |
671 | .get_rtc_time = pmac_get_rtc_time, | |
672 | .calibrate_decr = pmac_calibrate_decr, | |
673 | .feature_call = pmac_do_feature_call, | |
be6b8439 | 674 | .progress = udbg_progress, |
35499c01 | 675 | #ifdef CONFIG_PPC64 |
51d3082f | 676 | .pci_probe_mode = pmac_pci_probe_mode, |
a0652fc9 | 677 | .power_save = power4_idle, |
35499c01 | 678 | .enable_pmcs = power4_enable_pmcs, |
3d1229d6 | 679 | #endif /* CONFIG_PPC64 */ |
35499c01 PM |
680 | #ifdef CONFIG_PPC32 |
681 | .pcibios_enable_device_hook = pmac_pci_enable_device_hook, | |
682 | .pcibios_after_init = pmac_pcibios_after_init, | |
683 | .phys_mem_access_prot = pci_phys_mem_access_prot, | |
684 | #endif | |
685 | }; |