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1da177e4 LT |
1 | /* $Id: setup.c,v 1.8 2000/02/02 04:42:38 prumpf Exp $ |
2 | * | |
3 | * Initial setup-routines for HP 9000 based hardware. | |
4 | * | |
5 | * Copyright (C) 1991, 1992, 1995 Linus Torvalds | |
6 | * Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de> | |
7 | * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf) | |
8 | * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net> | |
9 | * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org> | |
10 | * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net> | |
11 | * | |
12 | * Initial PA-RISC Version: 04-23-1999 by Helge Deller | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or modify | |
15 | * it under the terms of the GNU General Public License as published by | |
16 | * the Free Software Foundation; either version 2, or (at your option) | |
17 | * any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
27 | * | |
28 | */ | |
29 | ||
30 | #include <linux/config.h> | |
31 | #include <linux/kernel.h> | |
32 | #include <linux/initrd.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/console.h> | |
35 | #include <linux/seq_file.h> | |
36 | #define PCI_DEBUG | |
37 | #include <linux/pci.h> | |
38 | #undef PCI_DEBUG | |
39 | #include <linux/proc_fs.h> | |
40 | ||
41 | #include <asm/processor.h> | |
42 | #include <asm/pdc.h> | |
43 | #include <asm/led.h> | |
44 | #include <asm/machdep.h> /* for pa7300lc_init() proto */ | |
45 | #include <asm/pdc_chassis.h> | |
46 | #include <asm/io.h> | |
47 | #include <asm/setup.h> | |
48 | ||
49 | char command_line[COMMAND_LINE_SIZE]; | |
50 | ||
51 | /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */ | |
52 | struct proc_dir_entry * proc_runway_root = NULL; | |
53 | struct proc_dir_entry * proc_gsc_root = NULL; | |
54 | struct proc_dir_entry * proc_mckinley_root = NULL; | |
55 | ||
56 | #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA)) | |
57 | int parisc_bus_is_phys = 1; /* Assume no IOMMU is present */ | |
58 | EXPORT_SYMBOL(parisc_bus_is_phys); | |
59 | #endif | |
60 | ||
61 | /* This sets the vmerge boundary and size, it's here because it has to | |
62 | * be available on all platforms (zero means no-virtual merging) */ | |
63 | unsigned long parisc_vmerge_boundary = 0; | |
64 | unsigned long parisc_vmerge_max_size = 0; | |
65 | ||
66 | void __init setup_cmdline(char **cmdline_p) | |
67 | { | |
68 | extern unsigned int boot_args[]; | |
69 | ||
70 | /* Collect stuff passed in from the boot loader */ | |
71 | ||
72 | /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */ | |
73 | if (boot_args[0] < 64) { | |
74 | /* called from hpux boot loader */ | |
75 | saved_command_line[0] = '\0'; | |
76 | } else { | |
77 | strcpy(saved_command_line, (char *)__va(boot_args[1])); | |
78 | ||
79 | #ifdef CONFIG_BLK_DEV_INITRD | |
80 | if (boot_args[2] != 0) /* did palo pass us a ramdisk? */ | |
81 | { | |
82 | initrd_start = (unsigned long)__va(boot_args[2]); | |
83 | initrd_end = (unsigned long)__va(boot_args[3]); | |
84 | } | |
85 | #endif | |
86 | } | |
87 | ||
88 | strcpy(command_line, saved_command_line); | |
89 | *cmdline_p = command_line; | |
90 | } | |
91 | ||
92 | #ifdef CONFIG_PA11 | |
93 | void __init dma_ops_init(void) | |
94 | { | |
95 | switch (boot_cpu_data.cpu_type) { | |
96 | case pcx: | |
97 | /* | |
98 | * We've got way too many dependencies on 1.1 semantics | |
99 | * to support 1.0 boxes at this point. | |
100 | */ | |
101 | panic( "PA-RISC Linux currently only supports machines that conform to\n" | |
102 | "the PA-RISC 1.1 or 2.0 architecture specification.\n"); | |
103 | ||
104 | case pcxs: | |
105 | case pcxt: | |
106 | hppa_dma_ops = &pcx_dma_ops; | |
107 | break; | |
108 | case pcxl2: | |
109 | pa7300lc_init(); | |
110 | case pcxl: /* falls through */ | |
111 | hppa_dma_ops = &pcxl_dma_ops; | |
112 | break; | |
113 | default: | |
114 | break; | |
115 | } | |
116 | } | |
117 | #endif | |
118 | ||
119 | extern int init_per_cpu(int cpuid); | |
120 | extern void collect_boot_cpu_data(void); | |
121 | ||
122 | void __init setup_arch(char **cmdline_p) | |
123 | { | |
124 | #ifdef __LP64__ | |
125 | extern int parisc_narrow_firmware; | |
126 | #endif | |
127 | ||
128 | init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */ | |
129 | ||
130 | #ifdef __LP64__ | |
131 | printk(KERN_INFO "The 64-bit Kernel has started...\n"); | |
132 | #else | |
133 | printk(KERN_INFO "The 32-bit Kernel has started...\n"); | |
134 | #endif | |
135 | ||
136 | pdc_console_init(); | |
137 | ||
138 | #ifdef __LP64__ | |
139 | if(parisc_narrow_firmware) { | |
140 | printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n"); | |
141 | } | |
142 | #endif | |
143 | setup_pdc(); | |
144 | setup_cmdline(cmdline_p); | |
145 | collect_boot_cpu_data(); | |
146 | do_memory_inventory(); /* probe for physical memory */ | |
147 | parisc_cache_init(); | |
148 | paging_init(); | |
149 | ||
150 | #ifdef CONFIG_CHASSIS_LCD_LED | |
151 | /* initialize the LCD/LED after boot_cpu_data is available ! */ | |
152 | led_init(); /* LCD/LED initialization */ | |
153 | #endif | |
154 | ||
155 | #ifdef CONFIG_PA11 | |
156 | dma_ops_init(); | |
157 | #endif | |
158 | ||
159 | #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) | |
160 | conswitchp = &dummy_con; /* we use take_over_console() later ! */ | |
161 | #endif | |
162 | ||
163 | } | |
164 | ||
165 | /* | |
166 | * Display cpu info for all cpu's. | |
167 | * for parisc this is in processor.c | |
168 | */ | |
169 | extern int show_cpuinfo (struct seq_file *m, void *v); | |
170 | ||
171 | static void * | |
172 | c_start (struct seq_file *m, loff_t *pos) | |
173 | { | |
174 | /* Looks like the caller will call repeatedly until we return | |
175 | * 0, signaling EOF perhaps. This could be used to sequence | |
176 | * through CPUs for example. Since we print all cpu info in our | |
177 | * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above) | |
178 | * we only allow for one "position". */ | |
179 | return ((long)*pos < 1) ? (void *)1 : NULL; | |
180 | } | |
181 | ||
182 | static void * | |
183 | c_next (struct seq_file *m, void *v, loff_t *pos) | |
184 | { | |
185 | ++*pos; | |
186 | return c_start(m, pos); | |
187 | } | |
188 | ||
189 | static void | |
190 | c_stop (struct seq_file *m, void *v) | |
191 | { | |
192 | } | |
193 | ||
194 | struct seq_operations cpuinfo_op = { | |
195 | .start = c_start, | |
196 | .next = c_next, | |
197 | .stop = c_stop, | |
198 | .show = show_cpuinfo | |
199 | }; | |
200 | ||
201 | static void __init parisc_proc_mkdir(void) | |
202 | { | |
203 | /* | |
204 | ** Can't call proc_mkdir() until after proc_root_init() has been | |
205 | ** called by start_kernel(). In other words, this code can't | |
206 | ** live in arch/.../setup.c because start_parisc() calls | |
207 | ** start_kernel(). | |
208 | */ | |
209 | switch (boot_cpu_data.cpu_type) { | |
210 | case pcxl: | |
211 | case pcxl2: | |
212 | if (NULL == proc_gsc_root) | |
213 | { | |
214 | proc_gsc_root = proc_mkdir("bus/gsc", NULL); | |
215 | } | |
216 | break; | |
217 | case pcxt_: | |
218 | case pcxu: | |
219 | case pcxu_: | |
220 | case pcxw: | |
221 | case pcxw_: | |
222 | case pcxw2: | |
223 | if (NULL == proc_runway_root) | |
224 | { | |
225 | proc_runway_root = proc_mkdir("bus/runway", NULL); | |
226 | } | |
227 | break; | |
228 | case mako: | |
229 | if (NULL == proc_mckinley_root) | |
230 | { | |
231 | proc_mckinley_root = proc_mkdir("bus/mckinley", NULL); | |
232 | } | |
233 | break; | |
234 | default: | |
235 | /* FIXME: this was added to prevent the compiler | |
236 | * complaining about missing pcx, pcxs and pcxt | |
237 | * I'm assuming they have neither gsc nor runway */ | |
238 | break; | |
239 | } | |
240 | } | |
241 | ||
242 | static struct resource central_bus = { | |
243 | .name = "Central Bus", | |
244 | .start = F_EXTEND(0xfff80000), | |
245 | .end = F_EXTEND(0xfffaffff), | |
246 | .flags = IORESOURCE_MEM, | |
247 | }; | |
248 | ||
249 | static struct resource local_broadcast = { | |
250 | .name = "Local Broadcast", | |
251 | .start = F_EXTEND(0xfffb0000), | |
252 | .end = F_EXTEND(0xfffdffff), | |
253 | .flags = IORESOURCE_MEM, | |
254 | }; | |
255 | ||
256 | static struct resource global_broadcast = { | |
257 | .name = "Global Broadcast", | |
258 | .start = F_EXTEND(0xfffe0000), | |
259 | .end = F_EXTEND(0xffffffff), | |
260 | .flags = IORESOURCE_MEM, | |
261 | }; | |
262 | ||
263 | static int __init parisc_init_resources(void) | |
264 | { | |
265 | int result; | |
266 | ||
267 | result = request_resource(&iomem_resource, ¢ral_bus); | |
268 | if (result < 0) { | |
269 | printk(KERN_ERR | |
270 | "%s: failed to claim %s address space!\n", | |
271 | __FILE__, central_bus.name); | |
272 | return result; | |
273 | } | |
274 | ||
275 | result = request_resource(&iomem_resource, &local_broadcast); | |
276 | if (result < 0) { | |
277 | printk(KERN_ERR | |
278 | "%s: failed to claim %saddress space!\n", | |
279 | __FILE__, local_broadcast.name); | |
280 | return result; | |
281 | } | |
282 | ||
283 | result = request_resource(&iomem_resource, &global_broadcast); | |
284 | if (result < 0) { | |
285 | printk(KERN_ERR | |
286 | "%s: failed to claim %s address space!\n", | |
287 | __FILE__, global_broadcast.name); | |
288 | return result; | |
289 | } | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
294 | extern void gsc_init(void); | |
295 | extern void processor_init(void); | |
296 | extern void ccio_init(void); | |
297 | extern void hppb_init(void); | |
298 | extern void dino_init(void); | |
299 | extern void iosapic_init(void); | |
300 | extern void lba_init(void); | |
301 | extern void sba_init(void); | |
302 | extern void eisa_init(void); | |
303 | ||
304 | static int __init parisc_init(void) | |
305 | { | |
306 | parisc_proc_mkdir(); | |
307 | parisc_init_resources(); | |
308 | do_device_inventory(); /* probe for hardware */ | |
309 | ||
310 | parisc_pdc_chassis_init(); | |
311 | ||
312 | /* set up a new led state on systems shipped LED State panel */ | |
313 | pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART); | |
314 | ||
315 | processor_init(); | |
316 | printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n", | |
317 | boot_cpu_data.cpu_count, | |
318 | boot_cpu_data.cpu_name, | |
319 | boot_cpu_data.cpu_hz / 1000000, | |
320 | boot_cpu_data.cpu_hz % 1000000 ); | |
321 | ||
322 | parisc_setup_cache_timing(); | |
323 | ||
324 | /* These are in a non-obvious order, will fix when we have an iotree */ | |
325 | #if defined(CONFIG_IOSAPIC) | |
326 | iosapic_init(); | |
327 | #endif | |
328 | #if defined(CONFIG_IOMMU_SBA) | |
329 | sba_init(); | |
330 | #endif | |
331 | #if defined(CONFIG_PCI_LBA) | |
332 | lba_init(); | |
333 | #endif | |
334 | ||
335 | /* CCIO before any potential subdevices */ | |
336 | #if defined(CONFIG_IOMMU_CCIO) | |
337 | ccio_init(); | |
338 | #endif | |
339 | ||
340 | /* | |
341 | * Need to register Asp & Wax before the EISA adapters for the IRQ | |
342 | * regions. EISA must come before PCI to be sure it gets IRQ region | |
343 | * 0. | |
344 | */ | |
345 | #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX) | |
346 | gsc_init(); | |
347 | #endif | |
348 | #ifdef CONFIG_EISA | |
349 | eisa_init(); | |
350 | #endif | |
351 | ||
352 | #if defined(CONFIG_HPPB) | |
353 | hppb_init(); | |
354 | #endif | |
355 | ||
356 | #if defined(CONFIG_GSC_DINO) | |
357 | dino_init(); | |
358 | #endif | |
359 | ||
360 | #ifdef CONFIG_CHASSIS_LCD_LED | |
361 | register_led_regions(); /* register LED port info in procfs */ | |
362 | #endif | |
363 | ||
364 | return 0; | |
365 | } | |
366 | ||
367 | arch_initcall(parisc_init); | |
368 |