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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 | ||
1da177e4 LT |
30 | #include <linux/kernel.h> |
31 | #include <linux/initrd.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/console.h> | |
34 | #include <linux/seq_file.h> | |
35 | #define PCI_DEBUG | |
36 | #include <linux/pci.h> | |
37 | #undef PCI_DEBUG | |
38 | #include <linux/proc_fs.h> | |
39 | ||
40 | #include <asm/processor.h> | |
41 | #include <asm/pdc.h> | |
42 | #include <asm/led.h> | |
43 | #include <asm/machdep.h> /* for pa7300lc_init() proto */ | |
44 | #include <asm/pdc_chassis.h> | |
45 | #include <asm/io.h> | |
46 | #include <asm/setup.h> | |
47 | ||
0ff851e1 | 48 | char __initdata command_line[COMMAND_LINE_SIZE]; |
1da177e4 LT |
49 | |
50 | /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */ | |
8039de10 HD |
51 | struct proc_dir_entry * proc_runway_root __read_mostly = NULL; |
52 | struct proc_dir_entry * proc_gsc_root __read_mostly = NULL; | |
53 | struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL; | |
1da177e4 LT |
54 | |
55 | #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA)) | |
8039de10 | 56 | int parisc_bus_is_phys __read_mostly = 1; /* Assume no IOMMU is present */ |
1da177e4 LT |
57 | EXPORT_SYMBOL(parisc_bus_is_phys); |
58 | #endif | |
59 | ||
60 | /* This sets the vmerge boundary and size, it's here because it has to | |
61 | * be available on all platforms (zero means no-virtual merging) */ | |
62 | unsigned long parisc_vmerge_boundary = 0; | |
63 | unsigned long parisc_vmerge_max_size = 0; | |
64 | ||
65 | void __init setup_cmdline(char **cmdline_p) | |
66 | { | |
67 | extern unsigned int boot_args[]; | |
68 | ||
69 | /* Collect stuff passed in from the boot loader */ | |
70 | ||
71 | /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */ | |
72 | if (boot_args[0] < 64) { | |
73 | /* called from hpux boot loader */ | |
668f9931 | 74 | boot_command_line[0] = '\0'; |
1da177e4 | 75 | } else { |
668f9931 | 76 | strcpy(boot_command_line, (char *)__va(boot_args[1])); |
1da177e4 LT |
77 | |
78 | #ifdef CONFIG_BLK_DEV_INITRD | |
79 | if (boot_args[2] != 0) /* did palo pass us a ramdisk? */ | |
80 | { | |
81 | initrd_start = (unsigned long)__va(boot_args[2]); | |
82 | initrd_end = (unsigned long)__va(boot_args[3]); | |
83 | } | |
84 | #endif | |
85 | } | |
86 | ||
668f9931 | 87 | strcpy(command_line, boot_command_line); |
1da177e4 LT |
88 | *cmdline_p = command_line; |
89 | } | |
90 | ||
91 | #ifdef CONFIG_PA11 | |
92 | void __init dma_ops_init(void) | |
93 | { | |
94 | switch (boot_cpu_data.cpu_type) { | |
95 | case pcx: | |
96 | /* | |
97 | * We've got way too many dependencies on 1.1 semantics | |
98 | * to support 1.0 boxes at this point. | |
99 | */ | |
100 | panic( "PA-RISC Linux currently only supports machines that conform to\n" | |
101 | "the PA-RISC 1.1 or 2.0 architecture specification.\n"); | |
102 | ||
103 | case pcxs: | |
104 | case pcxt: | |
105 | hppa_dma_ops = &pcx_dma_ops; | |
106 | break; | |
107 | case pcxl2: | |
108 | pa7300lc_init(); | |
109 | case pcxl: /* falls through */ | |
110 | hppa_dma_ops = &pcxl_dma_ops; | |
111 | break; | |
112 | default: | |
113 | break; | |
114 | } | |
115 | } | |
116 | #endif | |
117 | ||
118 | extern int init_per_cpu(int cpuid); | |
119 | extern void collect_boot_cpu_data(void); | |
120 | ||
121 | void __init setup_arch(char **cmdline_p) | |
122 | { | |
a8f44e38 | 123 | #ifdef CONFIG_64BIT |
1da177e4 LT |
124 | extern int parisc_narrow_firmware; |
125 | #endif | |
126 | ||
127 | init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */ | |
128 | ||
a8f44e38 | 129 | #ifdef CONFIG_64BIT |
1da177e4 LT |
130 | printk(KERN_INFO "The 64-bit Kernel has started...\n"); |
131 | #else | |
132 | printk(KERN_INFO "The 32-bit Kernel has started...\n"); | |
133 | #endif | |
134 | ||
135 | pdc_console_init(); | |
136 | ||
a8f44e38 | 137 | #ifdef CONFIG_64BIT |
1da177e4 LT |
138 | if(parisc_narrow_firmware) { |
139 | printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n"); | |
140 | } | |
141 | #endif | |
142 | setup_pdc(); | |
143 | setup_cmdline(cmdline_p); | |
144 | collect_boot_cpu_data(); | |
145 | do_memory_inventory(); /* probe for physical memory */ | |
146 | parisc_cache_init(); | |
147 | paging_init(); | |
148 | ||
149 | #ifdef CONFIG_CHASSIS_LCD_LED | |
150 | /* initialize the LCD/LED after boot_cpu_data is available ! */ | |
151 | led_init(); /* LCD/LED initialization */ | |
152 | #endif | |
153 | ||
154 | #ifdef CONFIG_PA11 | |
155 | dma_ops_init(); | |
156 | #endif | |
157 | ||
158 | #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE) | |
159 | conswitchp = &dummy_con; /* we use take_over_console() later ! */ | |
160 | #endif | |
161 | ||
162 | } | |
163 | ||
164 | /* | |
165 | * Display cpu info for all cpu's. | |
166 | * for parisc this is in processor.c | |
167 | */ | |
168 | extern int show_cpuinfo (struct seq_file *m, void *v); | |
169 | ||
170 | static void * | |
171 | c_start (struct seq_file *m, loff_t *pos) | |
172 | { | |
173 | /* Looks like the caller will call repeatedly until we return | |
174 | * 0, signaling EOF perhaps. This could be used to sequence | |
175 | * through CPUs for example. Since we print all cpu info in our | |
176 | * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above) | |
177 | * we only allow for one "position". */ | |
178 | return ((long)*pos < 1) ? (void *)1 : NULL; | |
179 | } | |
180 | ||
181 | static void * | |
182 | c_next (struct seq_file *m, void *v, loff_t *pos) | |
183 | { | |
184 | ++*pos; | |
185 | return c_start(m, pos); | |
186 | } | |
187 | ||
188 | static void | |
189 | c_stop (struct seq_file *m, void *v) | |
190 | { | |
191 | } | |
192 | ||
193 | struct seq_operations cpuinfo_op = { | |
194 | .start = c_start, | |
195 | .next = c_next, | |
196 | .stop = c_stop, | |
197 | .show = show_cpuinfo | |
198 | }; | |
199 | ||
200 | static void __init parisc_proc_mkdir(void) | |
201 | { | |
202 | /* | |
203 | ** Can't call proc_mkdir() until after proc_root_init() has been | |
204 | ** called by start_kernel(). In other words, this code can't | |
205 | ** live in arch/.../setup.c because start_parisc() calls | |
206 | ** start_kernel(). | |
207 | */ | |
208 | switch (boot_cpu_data.cpu_type) { | |
209 | case pcxl: | |
210 | case pcxl2: | |
211 | if (NULL == proc_gsc_root) | |
212 | { | |
213 | proc_gsc_root = proc_mkdir("bus/gsc", NULL); | |
214 | } | |
215 | break; | |
216 | case pcxt_: | |
217 | case pcxu: | |
218 | case pcxu_: | |
219 | case pcxw: | |
220 | case pcxw_: | |
221 | case pcxw2: | |
222 | if (NULL == proc_runway_root) | |
223 | { | |
224 | proc_runway_root = proc_mkdir("bus/runway", NULL); | |
225 | } | |
226 | break; | |
227 | case mako: | |
228 | if (NULL == proc_mckinley_root) | |
229 | { | |
230 | proc_mckinley_root = proc_mkdir("bus/mckinley", NULL); | |
231 | } | |
232 | break; | |
233 | default: | |
234 | /* FIXME: this was added to prevent the compiler | |
235 | * complaining about missing pcx, pcxs and pcxt | |
236 | * I'm assuming they have neither gsc nor runway */ | |
237 | break; | |
238 | } | |
239 | } | |
240 | ||
241 | static struct resource central_bus = { | |
242 | .name = "Central Bus", | |
243 | .start = F_EXTEND(0xfff80000), | |
244 | .end = F_EXTEND(0xfffaffff), | |
245 | .flags = IORESOURCE_MEM, | |
246 | }; | |
247 | ||
248 | static struct resource local_broadcast = { | |
249 | .name = "Local Broadcast", | |
250 | .start = F_EXTEND(0xfffb0000), | |
251 | .end = F_EXTEND(0xfffdffff), | |
252 | .flags = IORESOURCE_MEM, | |
253 | }; | |
254 | ||
255 | static struct resource global_broadcast = { | |
256 | .name = "Global Broadcast", | |
257 | .start = F_EXTEND(0xfffe0000), | |
258 | .end = F_EXTEND(0xffffffff), | |
259 | .flags = IORESOURCE_MEM, | |
260 | }; | |
261 | ||
262 | static int __init parisc_init_resources(void) | |
263 | { | |
264 | int result; | |
265 | ||
266 | result = request_resource(&iomem_resource, ¢ral_bus); | |
267 | if (result < 0) { | |
268 | printk(KERN_ERR | |
269 | "%s: failed to claim %s address space!\n", | |
270 | __FILE__, central_bus.name); | |
271 | return result; | |
272 | } | |
273 | ||
274 | result = request_resource(&iomem_resource, &local_broadcast); | |
275 | if (result < 0) { | |
276 | printk(KERN_ERR | |
277 | "%s: failed to claim %saddress space!\n", | |
278 | __FILE__, local_broadcast.name); | |
279 | return result; | |
280 | } | |
281 | ||
282 | result = request_resource(&iomem_resource, &global_broadcast); | |
283 | if (result < 0) { | |
284 | printk(KERN_ERR | |
285 | "%s: failed to claim %s address space!\n", | |
286 | __FILE__, global_broadcast.name); | |
287 | return result; | |
288 | } | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | extern void gsc_init(void); | |
294 | extern void processor_init(void); | |
295 | extern void ccio_init(void); | |
296 | extern void hppb_init(void); | |
297 | extern void dino_init(void); | |
298 | extern void iosapic_init(void); | |
299 | extern void lba_init(void); | |
300 | extern void sba_init(void); | |
301 | extern void eisa_init(void); | |
302 | ||
303 | static int __init parisc_init(void) | |
304 | { | |
ec1fdc24 | 305 | u32 osid = (OS_ID_LINUX << 16); |
3f9edb53 | 306 | |
1da177e4 LT |
307 | parisc_proc_mkdir(); |
308 | parisc_init_resources(); | |
309 | do_device_inventory(); /* probe for hardware */ | |
310 | ||
311 | parisc_pdc_chassis_init(); | |
312 | ||
313 | /* set up a new led state on systems shipped LED State panel */ | |
314 | pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART); | |
3f9edb53 TV |
315 | |
316 | /* tell PDC we're Linux. Nevermind failure. */ | |
317 | pdc_stable_write(0x40, &osid, sizeof(osid)); | |
1da177e4 LT |
318 | |
319 | processor_init(); | |
320 | printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n", | |
321 | boot_cpu_data.cpu_count, | |
322 | boot_cpu_data.cpu_name, | |
323 | boot_cpu_data.cpu_hz / 1000000, | |
324 | boot_cpu_data.cpu_hz % 1000000 ); | |
325 | ||
326 | parisc_setup_cache_timing(); | |
327 | ||
328 | /* These are in a non-obvious order, will fix when we have an iotree */ | |
329 | #if defined(CONFIG_IOSAPIC) | |
330 | iosapic_init(); | |
331 | #endif | |
332 | #if defined(CONFIG_IOMMU_SBA) | |
333 | sba_init(); | |
334 | #endif | |
335 | #if defined(CONFIG_PCI_LBA) | |
336 | lba_init(); | |
337 | #endif | |
338 | ||
339 | /* CCIO before any potential subdevices */ | |
340 | #if defined(CONFIG_IOMMU_CCIO) | |
341 | ccio_init(); | |
342 | #endif | |
343 | ||
344 | /* | |
345 | * Need to register Asp & Wax before the EISA adapters for the IRQ | |
346 | * regions. EISA must come before PCI to be sure it gets IRQ region | |
347 | * 0. | |
348 | */ | |
349 | #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX) | |
350 | gsc_init(); | |
351 | #endif | |
352 | #ifdef CONFIG_EISA | |
353 | eisa_init(); | |
354 | #endif | |
355 | ||
356 | #if defined(CONFIG_HPPB) | |
357 | hppb_init(); | |
358 | #endif | |
359 | ||
360 | #if defined(CONFIG_GSC_DINO) | |
361 | dino_init(); | |
362 | #endif | |
363 | ||
364 | #ifdef CONFIG_CHASSIS_LCD_LED | |
365 | register_led_regions(); /* register LED port info in procfs */ | |
366 | #endif | |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
371 | arch_initcall(parisc_init); | |
372 |