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071327ec | 1 | /* |
1da177e4 LT |
2 | * Initial setup-routines for HP 9000 based hardware. |
3 | * | |
4 | * Copyright (C) 1991, 1992, 1995 Linus Torvalds | |
5 | * Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de> | |
6 | * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf) | |
7 | * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net> | |
8 | * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org> | |
9 | * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net> | |
10 | * | |
11 | * Initial PA-RISC Version: 04-23-1999 by Helge Deller | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2, or (at your option) | |
16 | * any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | * | |
27 | */ | |
28 | ||
1da177e4 LT |
29 | #include <linux/kernel.h> |
30 | #include <linux/initrd.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/console.h> | |
33 | #include <linux/seq_file.h> | |
34 | #define PCI_DEBUG | |
35 | #include <linux/pci.h> | |
36 | #undef PCI_DEBUG | |
37 | #include <linux/proc_fs.h> | |
a87df54e | 38 | #include <linux/export.h> |
1da177e4 LT |
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> | |
f0514ae3 | 47 | #include <asm/unwind.h> |
1da177e4 | 48 | |
01da41b8 | 49 | static char __initdata command_line[COMMAND_LINE_SIZE]; |
1da177e4 LT |
50 | |
51 | /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */ | |
8039de10 HD |
52 | struct proc_dir_entry * proc_runway_root __read_mostly = NULL; |
53 | struct proc_dir_entry * proc_gsc_root __read_mostly = NULL; | |
54 | struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL; | |
1da177e4 LT |
55 | |
56 | #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA)) | |
8039de10 | 57 | int parisc_bus_is_phys __read_mostly = 1; /* Assume no IOMMU is present */ |
1da177e4 LT |
58 | EXPORT_SYMBOL(parisc_bus_is_phys); |
59 | #endif | |
60 | ||
1da177e4 LT |
61 | void __init setup_cmdline(char **cmdline_p) |
62 | { | |
63 | extern unsigned int boot_args[]; | |
64 | ||
65 | /* Collect stuff passed in from the boot loader */ | |
66 | ||
67 | /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */ | |
68 | if (boot_args[0] < 64) { | |
69 | /* called from hpux boot loader */ | |
668f9931 | 70 | boot_command_line[0] = '\0'; |
1da177e4 | 71 | } else { |
ea99b1ad CG |
72 | strlcpy(boot_command_line, (char *)__va(boot_args[1]), |
73 | COMMAND_LINE_SIZE); | |
1da177e4 LT |
74 | |
75 | #ifdef CONFIG_BLK_DEV_INITRD | |
76 | if (boot_args[2] != 0) /* did palo pass us a ramdisk? */ | |
77 | { | |
78 | initrd_start = (unsigned long)__va(boot_args[2]); | |
79 | initrd_end = (unsigned long)__va(boot_args[3]); | |
80 | } | |
81 | #endif | |
82 | } | |
83 | ||
668f9931 | 84 | strcpy(command_line, boot_command_line); |
1da177e4 LT |
85 | *cmdline_p = command_line; |
86 | } | |
87 | ||
88 | #ifdef CONFIG_PA11 | |
89 | void __init dma_ops_init(void) | |
90 | { | |
91 | switch (boot_cpu_data.cpu_type) { | |
92 | case pcx: | |
93 | /* | |
94 | * We've got way too many dependencies on 1.1 semantics | |
95 | * to support 1.0 boxes at this point. | |
96 | */ | |
97 | panic( "PA-RISC Linux currently only supports machines that conform to\n" | |
98 | "the PA-RISC 1.1 or 2.0 architecture specification.\n"); | |
99 | ||
100 | case pcxs: | |
101 | case pcxt: | |
102 | hppa_dma_ops = &pcx_dma_ops; | |
103 | break; | |
104 | case pcxl2: | |
105 | pa7300lc_init(); | |
106 | case pcxl: /* falls through */ | |
107 | hppa_dma_ops = &pcxl_dma_ops; | |
108 | break; | |
109 | default: | |
110 | break; | |
111 | } | |
112 | } | |
113 | #endif | |
114 | ||
115 | extern int init_per_cpu(int cpuid); | |
116 | extern void collect_boot_cpu_data(void); | |
117 | ||
118 | void __init setup_arch(char **cmdline_p) | |
119 | { | |
a8f44e38 | 120 | #ifdef CONFIG_64BIT |
1da177e4 LT |
121 | extern int parisc_narrow_firmware; |
122 | #endif | |
f0514ae3 | 123 | unwind_init(); |
1da177e4 LT |
124 | |
125 | init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */ | |
126 | ||
a8f44e38 | 127 | #ifdef CONFIG_64BIT |
1da177e4 LT |
128 | printk(KERN_INFO "The 64-bit Kernel has started...\n"); |
129 | #else | |
130 | printk(KERN_INFO "The 32-bit Kernel has started...\n"); | |
131 | #endif | |
132 | ||
6a45716a HD |
133 | printk(KERN_INFO "Default page size is %dKB.\n", (int)(PAGE_SIZE / 1024)); |
134 | ||
1da177e4 LT |
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 | /* | |
7022672e | 165 | * Display CPU info for all CPUs. |
1da177e4 LT |
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 | ||
03a44825 | 193 | const struct seq_operations cpuinfo_op = { |
1da177e4 LT |
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: | |
2cbd42db | 228 | case mako2: |
1da177e4 LT |
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 | { | |
ec1fdc24 | 306 | u32 osid = (OS_ID_LINUX << 16); |
3f9edb53 | 307 | |
1da177e4 LT |
308 | parisc_proc_mkdir(); |
309 | parisc_init_resources(); | |
310 | do_device_inventory(); /* probe for hardware */ | |
311 | ||
312 | parisc_pdc_chassis_init(); | |
313 | ||
314 | /* set up a new led state on systems shipped LED State panel */ | |
315 | pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART); | |
3f9edb53 TV |
316 | |
317 | /* tell PDC we're Linux. Nevermind failure. */ | |
318 | pdc_stable_write(0x40, &osid, sizeof(osid)); | |
1da177e4 LT |
319 | |
320 | processor_init(); | |
321 | printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n", | |
ef017beb | 322 | num_present_cpus(), |
1da177e4 LT |
323 | boot_cpu_data.cpu_name, |
324 | boot_cpu_data.cpu_hz / 1000000, | |
325 | boot_cpu_data.cpu_hz % 1000000 ); | |
326 | ||
327 | parisc_setup_cache_timing(); | |
328 | ||
329 | /* These are in a non-obvious order, will fix when we have an iotree */ | |
330 | #if defined(CONFIG_IOSAPIC) | |
331 | iosapic_init(); | |
332 | #endif | |
333 | #if defined(CONFIG_IOMMU_SBA) | |
334 | sba_init(); | |
335 | #endif | |
336 | #if defined(CONFIG_PCI_LBA) | |
337 | lba_init(); | |
338 | #endif | |
339 | ||
340 | /* CCIO before any potential subdevices */ | |
341 | #if defined(CONFIG_IOMMU_CCIO) | |
342 | ccio_init(); | |
343 | #endif | |
344 | ||
345 | /* | |
346 | * Need to register Asp & Wax before the EISA adapters for the IRQ | |
347 | * regions. EISA must come before PCI to be sure it gets IRQ region | |
348 | * 0. | |
349 | */ | |
350 | #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX) | |
351 | gsc_init(); | |
352 | #endif | |
353 | #ifdef CONFIG_EISA | |
354 | eisa_init(); | |
355 | #endif | |
356 | ||
357 | #if defined(CONFIG_HPPB) | |
358 | hppb_init(); | |
359 | #endif | |
360 | ||
361 | #if defined(CONFIG_GSC_DINO) | |
362 | dino_init(); | |
363 | #endif | |
364 | ||
365 | #ifdef CONFIG_CHASSIS_LCD_LED | |
366 | register_led_regions(); /* register LED port info in procfs */ | |
367 | #endif | |
368 | ||
369 | return 0; | |
370 | } | |
1da177e4 LT |
371 | arch_initcall(parisc_init); |
372 | ||
089d5528 KM |
373 | void start_parisc(void) |
374 | { | |
375 | extern void start_kernel(void); | |
376 | ||
377 | int ret, cpunum; | |
378 | struct pdc_coproc_cfg coproc_cfg; | |
379 | ||
380 | cpunum = smp_processor_id(); | |
381 | ||
382 | set_firmware_width_unlocked(); | |
383 | ||
384 | ret = pdc_coproc_cfg_unlocked(&coproc_cfg); | |
385 | if (ret >= 0 && coproc_cfg.ccr_functional) { | |
386 | mtctl(coproc_cfg.ccr_functional, 10); | |
387 | ||
ef017beb HD |
388 | per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision; |
389 | per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model; | |
089d5528 KM |
390 | |
391 | asm volatile ("fstd %fr0,8(%sp)"); | |
392 | } else { | |
393 | panic("must have an fpu to boot linux"); | |
394 | } | |
395 | ||
396 | start_kernel(); | |
397 | // not reached | |
398 | } |