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

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

Version: ~ [ linux-5.9-rc6 ] ~ [ linux-5.8.10 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.66 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.146 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.198 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.236 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.236 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ 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 #include <linux/sched.h>
 40 #include <linux/sched/clock.h>
 41 #include <linux/start_kernel.h>
 42 
 43 #include <asm/processor.h>
 44 #include <asm/sections.h>
 45 #include <asm/pdc.h>
 46 #include <asm/led.h>
 47 #include <asm/machdep.h>        /* for pa7300lc_init() proto */
 48 #include <asm/pdc_chassis.h>
 49 #include <asm/io.h>
 50 #include <asm/setup.h>
 51 #include <asm/unwind.h>
 52 #include <asm/smp.h>
 53 
 54 static char __initdata command_line[COMMAND_LINE_SIZE];
 55 
 56 /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
 57 struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
 58 struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
 59 struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
 60 
 61 #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA))
 62 int parisc_bus_is_phys __read_mostly = 1;       /* Assume no IOMMU is present */
 63 EXPORT_SYMBOL(parisc_bus_is_phys);
 64 #endif
 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                 boot_command_line[0] = '\0';
 76         } else {
 77                 strlcpy(boot_command_line, (char *)__va(boot_args[1]),
 78                         COMMAND_LINE_SIZE);
 79 
 80 #ifdef CONFIG_BLK_DEV_INITRD
 81                 if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
 82                 {
 83                     initrd_start = (unsigned long)__va(boot_args[2]);
 84                     initrd_end = (unsigned long)__va(boot_args[3]);
 85                 }
 86 #endif
 87         }
 88 
 89         strcpy(command_line, boot_command_line);
 90         *cmdline_p = command_line;
 91 }
 92 
 93 #ifdef CONFIG_PA11
 94 void __init dma_ops_init(void)
 95 {
 96         switch (boot_cpu_data.cpu_type) {
 97         case pcx:
 98                 /*
 99                  * We've got way too many dependencies on 1.1 semantics
100                  * to support 1.0 boxes at this point.
101                  */
102                 panic(  "PA-RISC Linux currently only supports machines that conform to\n"
103                         "the PA-RISC 1.1 or 2.0 architecture specification.\n");
104 
105         case pcxs:
106         case pcxt:
107                 hppa_dma_ops = &pcx_dma_ops;
108                 break;
109         case pcxl2:
110                 pa7300lc_init();
111         case pcxl: /* falls through */
112                 hppa_dma_ops = &pcxl_dma_ops;
113                 break;
114         default:
115                 break;
116         }
117 }
118 #endif
119 
120 extern void collect_boot_cpu_data(void);
121 
122 void __init setup_arch(char **cmdline_p)
123 {
124 #ifdef CONFIG_64BIT
125         extern int parisc_narrow_firmware;
126 #endif
127         unwind_init();
128 
129         init_per_cpu(smp_processor_id());       /* Set Modes & Enable FP */
130 
131 #ifdef CONFIG_64BIT
132         printk(KERN_INFO "The 64-bit Kernel has started...\n");
133 #else
134         printk(KERN_INFO "The 32-bit Kernel has started...\n");
135 #endif
136 
137         printk(KERN_INFO "Kernel default page size is %d KB. Huge pages ",
138                 (int)(PAGE_SIZE / 1024));
139 #ifdef CONFIG_HUGETLB_PAGE
140         printk(KERN_CONT "enabled with %d MB physical and %d MB virtual size",
141                  1 << (REAL_HPAGE_SHIFT - 20), 1 << (HPAGE_SHIFT - 20));
142 #else
143         printk(KERN_CONT "disabled");
144 #endif
145         printk(KERN_CONT ".\n");
146 
147         /*
148          * Check if initial kernel page mappings are sufficient.
149          * panic early if not, else we may access kernel functions
150          * and variables which can't be reached.
151          */
152         if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
153                 panic("KERNEL_INITIAL_ORDER too small!");
154 
155         pdc_console_init();
156 
157 #ifdef CONFIG_64BIT
158         if(parisc_narrow_firmware) {
159                 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
160         }
161 #endif
162         setup_pdc();
163         setup_cmdline(cmdline_p);
164         collect_boot_cpu_data();
165         do_memory_inventory();  /* probe for physical memory */
166         parisc_cache_init();
167         paging_init();
168 
169 #ifdef CONFIG_CHASSIS_LCD_LED
170         /* initialize the LCD/LED after boot_cpu_data is available ! */
171         led_init();             /* LCD/LED initialization */
172 #endif
173 
174 #ifdef CONFIG_PA11
175         dma_ops_init();
176 #endif
177 
178 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
179         conswitchp = &dummy_con;        /* we use do_take_over_console() later ! */
180 #endif
181 
182         clear_sched_clock_stable();
183 }
184 
185 /*
186  * Display CPU info for all CPUs.
187  * for parisc this is in processor.c
188  */
189 extern int show_cpuinfo (struct seq_file *m, void *v);
190 
191 static void *
192 c_start (struct seq_file *m, loff_t *pos)
193 {
194         /* Looks like the caller will call repeatedly until we return
195          * 0, signaling EOF perhaps.  This could be used to sequence
196          * through CPUs for example.  Since we print all cpu info in our
197          * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
198          * we only allow for one "position".  */
199         return ((long)*pos < 1) ? (void *)1 : NULL;
200 }
201 
202 static void *
203 c_next (struct seq_file *m, void *v, loff_t *pos)
204 {
205         ++*pos;
206         return c_start(m, pos);
207 }
208 
209 static void
210 c_stop (struct seq_file *m, void *v)
211 {
212 }
213 
214 const struct seq_operations cpuinfo_op = {
215         .start  = c_start,
216         .next   = c_next,
217         .stop   = c_stop,
218         .show   = show_cpuinfo
219 };
220 
221 static void __init parisc_proc_mkdir(void)
222 {
223         /*
224         ** Can't call proc_mkdir() until after proc_root_init() has been
225         ** called by start_kernel(). In other words, this code can't
226         ** live in arch/.../setup.c because start_parisc() calls
227         ** start_kernel().
228         */
229         switch (boot_cpu_data.cpu_type) {
230         case pcxl:
231         case pcxl2:
232                 if (NULL == proc_gsc_root)
233                 {
234                         proc_gsc_root = proc_mkdir("bus/gsc", NULL);
235                 }
236                 break;
237         case pcxt_:
238         case pcxu:
239         case pcxu_:
240         case pcxw:
241         case pcxw_:
242         case pcxw2:
243                 if (NULL == proc_runway_root)
244                 {
245                         proc_runway_root = proc_mkdir("bus/runway", NULL);
246                 }
247                 break;
248         case mako:
249         case mako2:
250                 if (NULL == proc_mckinley_root)
251                 {
252                         proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
253                 }
254                 break;
255         default:
256                 /* FIXME: this was added to prevent the compiler 
257                  * complaining about missing pcx, pcxs and pcxt
258                  * I'm assuming they have neither gsc nor runway */
259                 break;
260         }
261 }
262 
263 static struct resource central_bus = {
264         .name   = "Central Bus",
265         .start  = F_EXTEND(0xfff80000),
266         .end    = F_EXTEND(0xfffaffff),
267         .flags  = IORESOURCE_MEM,
268 };
269 
270 static struct resource local_broadcast = {
271         .name   = "Local Broadcast",
272         .start  = F_EXTEND(0xfffb0000),
273         .end    = F_EXTEND(0xfffdffff),
274         .flags  = IORESOURCE_MEM,
275 };
276 
277 static struct resource global_broadcast = {
278         .name   = "Global Broadcast",
279         .start  = F_EXTEND(0xfffe0000),
280         .end    = F_EXTEND(0xffffffff),
281         .flags  = IORESOURCE_MEM,
282 };
283 
284 static int __init parisc_init_resources(void)
285 {
286         int result;
287 
288         result = request_resource(&iomem_resource, &central_bus);
289         if (result < 0) {
290                 printk(KERN_ERR 
291                        "%s: failed to claim %s address space!\n", 
292                        __FILE__, central_bus.name);
293                 return result;
294         }
295 
296         result = request_resource(&iomem_resource, &local_broadcast);
297         if (result < 0) {
298                 printk(KERN_ERR 
299                        "%s: failed to claim %saddress space!\n", 
300                        __FILE__, local_broadcast.name);
301                 return result;
302         }
303 
304         result = request_resource(&iomem_resource, &global_broadcast);
305         if (result < 0) {
306                 printk(KERN_ERR 
307                        "%s: failed to claim %s address space!\n", 
308                        __FILE__, global_broadcast.name);
309                 return result;
310         }
311 
312         return 0;
313 }
314 
315 extern void gsc_init(void);
316 extern void processor_init(void);
317 extern void ccio_init(void);
318 extern void hppb_init(void);
319 extern void dino_init(void);
320 extern void iosapic_init(void);
321 extern void lba_init(void);
322 extern void sba_init(void);
323 extern void eisa_init(void);
324 
325 static int __init parisc_init(void)
326 {
327         u32 osid = (OS_ID_LINUX << 16);
328 
329         parisc_proc_mkdir();
330         parisc_init_resources();
331         do_device_inventory();                  /* probe for hardware */
332 
333         parisc_pdc_chassis_init();
334         
335         /* set up a new led state on systems shipped LED State panel */
336         pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
337 
338         /* tell PDC we're Linux. Nevermind failure. */
339         pdc_stable_write(0x40, &osid, sizeof(osid));
340         
341         /* start with known state */
342         flush_cache_all_local();
343         flush_tlb_all_local(NULL);
344 
345         processor_init();
346 #ifdef CONFIG_SMP
347         pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n",
348                 num_online_cpus(), num_present_cpus(),
349 #else
350         pr_info("CPU(s): 1 x %s at %d.%06d MHz\n",
351 #endif
352                         boot_cpu_data.cpu_name,
353                         boot_cpu_data.cpu_hz / 1000000,
354                         boot_cpu_data.cpu_hz % 1000000  );
355 
356         parisc_setup_cache_timing();
357 
358         /* These are in a non-obvious order, will fix when we have an iotree */
359 #if defined(CONFIG_IOSAPIC)
360         iosapic_init();
361 #endif
362 #if defined(CONFIG_IOMMU_SBA)
363         sba_init();
364 #endif
365 #if defined(CONFIG_PCI_LBA)
366         lba_init();
367 #endif
368 
369         /* CCIO before any potential subdevices */
370 #if defined(CONFIG_IOMMU_CCIO)
371         ccio_init();
372 #endif
373 
374         /*
375          * Need to register Asp & Wax before the EISA adapters for the IRQ
376          * regions.  EISA must come before PCI to be sure it gets IRQ region
377          * 0.
378          */
379 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
380         gsc_init();
381 #endif
382 #ifdef CONFIG_EISA
383         eisa_init();
384 #endif
385 
386 #if defined(CONFIG_HPPB)
387         hppb_init();
388 #endif
389 
390 #if defined(CONFIG_GSC_DINO)
391         dino_init();
392 #endif
393 
394 #ifdef CONFIG_CHASSIS_LCD_LED
395         register_led_regions(); /* register LED port info in procfs */
396 #endif
397 
398         return 0;
399 }
400 arch_initcall(parisc_init);
401 
402 void __init start_parisc(void)
403 {
404         extern void early_trap_init(void);
405 
406         int ret, cpunum;
407         struct pdc_coproc_cfg coproc_cfg;
408 
409         cpunum = smp_processor_id();
410 
411         init_cpu_topology();
412 
413         set_firmware_width_unlocked();
414 
415         ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
416         if (ret >= 0 && coproc_cfg.ccr_functional) {
417                 mtctl(coproc_cfg.ccr_functional, 10);
418 
419                 per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
420                 per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
421 
422                 asm volatile ("fstd     %fr0,8(%sp)");
423         } else {
424                 panic("must have an fpu to boot linux");
425         }
426 
427         early_trap_init(); /* initialize checksum of fault_vector */
428 
429         start_kernel();
430         // not reached
431 }
432 

~ [ 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