~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/parisc/kernel/setup.c

Version: ~ [ linux-5.12-rc1 ] ~ [ linux-5.11.2 ] ~ [ linux-5.10.19 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.101 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.177 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.222 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.258 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.258 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  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 
 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>
 38 #include <linux/export.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 #include <asm/unwind.h>
 48 
 49 static char __initdata 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 __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;
 55 
 56 #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA))
 57 int parisc_bus_is_phys __read_mostly = 1;       /* Assume no IOMMU is present */
 58 EXPORT_SYMBOL(parisc_bus_is_phys);
 59 #endif
 60 
 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 */
 70                 boot_command_line[0] = '\0';
 71         } else {
 72                 strlcpy(boot_command_line, (char *)__va(boot_args[1]),
 73                         COMMAND_LINE_SIZE);
 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 
 84         strcpy(command_line, boot_command_line);
 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 {
120 #ifdef CONFIG_64BIT
121         extern int parisc_narrow_firmware;
122 #endif
123         unwind_init();
124 
125         init_per_cpu(smp_processor_id());       /* Set Modes & Enable FP */
126 
127 #ifdef CONFIG_64BIT
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 
133         printk(KERN_INFO "Default page size is %dKB.\n", (int)(PAGE_SIZE / 1024));
134 
135         pdc_console_init();
136 
137 #ifdef CONFIG_64BIT
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 do_take_over_console() later ! */
160 #endif
161 
162 }
163 
164 /*
165  * Display CPU info for all CPUs.
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 const 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         case mako2:
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, &central_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         u32 osid = (OS_ID_LINUX << 16);
307 
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);
316 
317         /* tell PDC we're Linux. Nevermind failure. */
318         pdc_stable_write(0x40, &osid, sizeof(osid));
319         
320         processor_init();
321 #ifdef CONFIG_SMP
322         pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n",
323                 num_online_cpus(), num_present_cpus(),
324 #else
325         pr_info("CPU(s): 1 x %s at %d.%06d MHz\n",
326 #endif
327                         boot_cpu_data.cpu_name,
328                         boot_cpu_data.cpu_hz / 1000000,
329                         boot_cpu_data.cpu_hz % 1000000  );
330 
331         parisc_setup_cache_timing();
332 
333         /* These are in a non-obvious order, will fix when we have an iotree */
334 #if defined(CONFIG_IOSAPIC)
335         iosapic_init();
336 #endif
337 #if defined(CONFIG_IOMMU_SBA)
338         sba_init();
339 #endif
340 #if defined(CONFIG_PCI_LBA)
341         lba_init();
342 #endif
343 
344         /* CCIO before any potential subdevices */
345 #if defined(CONFIG_IOMMU_CCIO)
346         ccio_init();
347 #endif
348 
349         /*
350          * Need to register Asp & Wax before the EISA adapters for the IRQ
351          * regions.  EISA must come before PCI to be sure it gets IRQ region
352          * 0.
353          */
354 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
355         gsc_init();
356 #endif
357 #ifdef CONFIG_EISA
358         eisa_init();
359 #endif
360 
361 #if defined(CONFIG_HPPB)
362         hppb_init();
363 #endif
364 
365 #if defined(CONFIG_GSC_DINO)
366         dino_init();
367 #endif
368 
369 #ifdef CONFIG_CHASSIS_LCD_LED
370         register_led_regions(); /* register LED port info in procfs */
371 #endif
372 
373         return 0;
374 }
375 arch_initcall(parisc_init);
376 
377 void start_parisc(void)
378 {
379         extern void start_kernel(void);
380 
381         int ret, cpunum;
382         struct pdc_coproc_cfg coproc_cfg;
383 
384         cpunum = smp_processor_id();
385 
386         set_firmware_width_unlocked();
387 
388         ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
389         if (ret >= 0 && coproc_cfg.ccr_functional) {
390                 mtctl(coproc_cfg.ccr_functional, 10);
391 
392                 per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
393                 per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
394 
395                 asm volatile ("fstd     %fr0,8(%sp)");
396         } else {
397                 panic("must have an fpu to boot linux");
398         }
399 
400         start_kernel();
401         // not reached
402 }
403 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp