[PARISC] Further updates to timer_interrupt()
[linux-2.6.22.y-op.git] / arch / parisc / kernel / setup.c
blob3c7a3faf78edcc657443772e5fe785472df4ef8c
1 /* $Id: setup.c,v 1.8 2000/02/02 04:42:38 prumpf Exp $
3 * Initial setup-routines for HP 9000 based hardware.
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>
12 * Initial PA-RISC Version: 04-23-1999 by Helge Deller
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.
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.
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.
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>
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>
48 char command_line[COMMAND_LINE_SIZE] __read_mostly;
50 /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
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;
55 #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA))
56 int parisc_bus_is_phys __read_mostly = 1; /* Assume no IOMMU is present */
57 EXPORT_SYMBOL(parisc_bus_is_phys);
58 #endif
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;
65 void __init setup_cmdline(char **cmdline_p)
67 extern unsigned int boot_args[];
69 /* Collect stuff passed in from the boot loader */
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 */
74 saved_command_line[0] = '\0';
75 } else {
76 strcpy(saved_command_line, (char *)__va(boot_args[1]));
78 #ifdef CONFIG_BLK_DEV_INITRD
79 if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
81 initrd_start = (unsigned long)__va(boot_args[2]);
82 initrd_end = (unsigned long)__va(boot_args[3]);
84 #endif
87 strcpy(command_line, saved_command_line);
88 *cmdline_p = command_line;
91 #ifdef CONFIG_PA11
92 void __init dma_ops_init(void)
94 switch (boot_cpu_data.cpu_type) {
95 case pcx:
97 * We've got way too many dependencies on 1.1 semantics
98 * to support 1.0 boxes at this point.
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");
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;
116 #endif
118 extern int init_per_cpu(int cpuid);
119 extern void collect_boot_cpu_data(void);
121 void __init setup_arch(char **cmdline_p)
123 #ifdef __LP64__
124 extern int parisc_narrow_firmware;
125 #endif
127 init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
129 #ifdef __LP64__
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
135 pdc_console_init();
137 #ifdef __LP64__
138 if(parisc_narrow_firmware) {
139 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
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();
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
154 #ifdef CONFIG_PA11
155 dma_ops_init();
156 #endif
158 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
159 conswitchp = &dummy_con; /* we use take_over_console() later ! */
160 #endif
165 * Display cpu info for all cpu's.
166 * for parisc this is in processor.c
168 extern int show_cpuinfo (struct seq_file *m, void *v);
170 static void *
171 c_start (struct seq_file *m, loff_t *pos)
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;
181 static void *
182 c_next (struct seq_file *m, void *v, loff_t *pos)
184 ++*pos;
185 return c_start(m, pos);
188 static void
189 c_stop (struct seq_file *m, void *v)
193 struct seq_operations cpuinfo_op = {
194 .start = c_start,
195 .next = c_next,
196 .stop = c_stop,
197 .show = show_cpuinfo
200 static void __init parisc_proc_mkdir(void)
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().
208 switch (boot_cpu_data.cpu_type) {
209 case pcxl:
210 case pcxl2:
211 if (NULL == proc_gsc_root)
213 proc_gsc_root = proc_mkdir("bus/gsc", NULL);
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)
224 proc_runway_root = proc_mkdir("bus/runway", NULL);
226 break;
227 case mako:
228 if (NULL == proc_mckinley_root)
230 proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
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;
241 static struct resource central_bus = {
242 .name = "Central Bus",
243 .start = F_EXTEND(0xfff80000),
244 .end = F_EXTEND(0xfffaffff),
245 .flags = IORESOURCE_MEM,
248 static struct resource local_broadcast = {
249 .name = "Local Broadcast",
250 .start = F_EXTEND(0xfffb0000),
251 .end = F_EXTEND(0xfffdffff),
252 .flags = IORESOURCE_MEM,
255 static struct resource global_broadcast = {
256 .name = "Global Broadcast",
257 .start = F_EXTEND(0xfffe0000),
258 .end = F_EXTEND(0xffffffff),
259 .flags = IORESOURCE_MEM,
262 static int __init parisc_init_resources(void)
264 int result;
266 result = request_resource(&iomem_resource, &central_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;
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;
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;
290 return 0;
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);
303 static int __init parisc_init(void)
305 u32 osid = (OS_ID_LINUX << 16);
307 parisc_proc_mkdir();
308 parisc_init_resources();
309 do_device_inventory(); /* probe for hardware */
311 parisc_pdc_chassis_init();
313 /* set up a new led state on systems shipped LED State panel */
314 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
316 /* tell PDC we're Linux. Nevermind failure. */
317 pdc_stable_write(0x40, &osid, sizeof(osid));
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 );
326 parisc_setup_cache_timing();
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
339 /* CCIO before any potential subdevices */
340 #if defined(CONFIG_IOMMU_CCIO)
341 ccio_init();
342 #endif
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.
349 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
350 gsc_init();
351 #endif
352 #ifdef CONFIG_EISA
353 eisa_init();
354 #endif
356 #if defined(CONFIG_HPPB)
357 hppb_init();
358 #endif
360 #if defined(CONFIG_GSC_DINO)
361 dino_init();
362 #endif
364 #ifdef CONFIG_CHASSIS_LCD_LED
365 register_led_regions(); /* register LED port info in procfs */
366 #endif
368 return 0;
371 arch_initcall(parisc_init);