arch/parisc/kernel/setup.c

   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
  30 #include <linux/config.h>
  31 #include <linux/kernel.h>
  32 #include <linux/initrd.h>
  33 #include <linux/init.h>
  34 #include <linux/console.h>
  35 #include <linux/seq_file.h>
  36 #define PCI_DEBUG
  37 #include <linux/pci.h>
  38 #undef PCI_DEBUG
  39 #include <linux/proc_fs.h>
  40
  41 #include <asm/processor.h>
  42 #include <asm/pdc.h>
  43 #include <asm/led.h>
  44 #include <asm/machdep.h>        /* for pa7300lc_init() proto */
  45 #include <asm/pdc_chassis.h>
  46 #include <asm/io.h>
  47 #include <asm/setup.h>
  48
  49 char    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 = NULL;
  53 struct proc_dir_entry * proc_gsc_root = NULL;
  54 struct proc_dir_entry * proc_mckinley_root = NULL;
  55
  56
  57 void __init setup_cmdline(char **cmdline_p)
  58 {
  59         extern unsigned int boot_args[];
  60
  61         /* Collect stuff passed in from the boot loader */
  62
  63         /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
  64         if (boot_args[0] < 64) {
  65                 /* called from hpux boot loader */
  66                 saved_command_line[0] = '\0';
  67         } else {
  68                 strcpy(saved_command_line, (char *)__va(boot_args[1]));
  69
  70 #ifdef CONFIG_BLK_DEV_INITRD
  71                 if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
  72                 {
  73                     initrd_start = (unsigned long)__va(boot_args[2]);
  74                     initrd_end = (unsigned long)__va(boot_args[3]);
  75                 }
  76 #endif
  77         }
  78
  79         strcpy(command_line, saved_command_line);
  80         *cmdline_p = command_line;
  81 }
  82
  83 #ifdef CONFIG_PA11
  84 void __init dma_ops_init(void)
  85 {
  86         switch (boot_cpu_data.cpu_type) {
  87         case pcx:
  88                 /*
  89                  * We've got way too many dependencies on 1.1 semantics
  90                  * to support 1.0 boxes at this point.
  91                  */
  92                 panic(  "PA-RISC Linux currently only supports machines that conform to\n"
  93                         "the PA-RISC 1.1 or 2.0 architecture specification.\n");
  94
  95         case pcxs:
  96         case pcxt:
  97                 hppa_dma_ops = &pcx_dma_ops;
  98                 break;
  99         case pcxl2:
 100                 pa7300lc_init();
 101         case pcxl: /* falls through */
 102                 hppa_dma_ops = &pcxl_dma_ops;
 103                 break;
 104         default:
 105                 break;
 106         }
 107 }
 108 #endif
 109
 110 extern int init_per_cpu(int cpuid);
 111 extern void collect_boot_cpu_data(void);
 112
 113 void __init setup_arch(char **cmdline_p)
 114 {
 115         init_per_cpu(smp_processor_id());       /* Set Modes & Enable FP */
 116
 117 #ifdef __LP64__
 118         printk(KERN_INFO "The 64-bit Kernel has started...\n");
 119 #else
 120         printk(KERN_INFO "The 32-bit Kernel has started...\n");
 121 #endif
 122
 123         pdc_console_init();
 124
 125 #ifdef __LP64__
 126         extern int parisc_narrow_firmware;
 127         if(parisc_narrow_firmware) {
 128                 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
 129         }
 130 #endif
 131         setup_pdc();
 132         setup_cmdline(cmdline_p);
 133         collect_boot_cpu_data();
 134         do_memory_inventory();  /* probe for physical memory */
 135         parisc_cache_init();
 136         paging_init();
 137
 138 #ifdef CONFIG_CHASSIS_LCD_LED
 139         /* initialize the LCD/LED after boot_cpu_data is available ! */
 140         led_init();             /* LCD/LED initialization */
 141 #endif
 142
 143 #ifdef CONFIG_PA11
 144         dma_ops_init();
 145 #endif
 146
 147 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
 148         conswitchp = &dummy_con;        /* we use take_over_console() later ! */
 149 #endif
 150
 151 }
 152
 153 /*
 154  * Display cpu info for all cpu's.
 155  * for parisc this is in processor.c
 156  */
 157 extern int show_cpuinfo (struct seq_file *m, void *v);
 158
 159 static void *
 160 c_start (struct seq_file *m, loff_t *pos)
 161 {
 162         /* Looks like the caller will call repeatedly until we return
 163          * 0, signaling EOF perhaps.  This could be used to sequence
 164          * through CPUs for example.  Since we print all cpu info in our
 165          * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
 166          * we only allow for one "position".  */
 167         return ((long)*pos < 1) ? (void *)1 : NULL;
 168 }
 169
 170 static void *
 171 c_next (struct seq_file *m, void *v, loff_t *pos)
 172 {
 173         ++*pos;
 174         return c_start(m, pos);
 175 }
 176
 177 static void
 178 c_stop (struct seq_file *m, void *v)
 179 {
 180 }
 181
 182 struct seq_operations cpuinfo_op = {
 183         .start  = c_start,
 184         .next   = c_next,
 185         .stop   = c_stop,
 186         .show   = show_cpuinfo
 187 };
 188
 189 static void __init parisc_proc_mkdir(void)
 190 {
 191         /*
 192         ** Can't call proc_mkdir() until after proc_root_init() has been
 193         ** called by start_kernel(). In other words, this code can't
 194         ** live in arch/.../setup.c because start_parisc() calls
 195         ** start_kernel().
 196         */
 197         switch (boot_cpu_data.cpu_type) {
 198         case pcxl:
 199         case pcxl2:
 200                 if (NULL == proc_gsc_root)
 201                 {
 202                         proc_gsc_root = proc_mkdir("bus/gsc", 0);
 203                 }
 204                 break;
 205         case pcxt_:
 206         case pcxu:
 207         case pcxu_:
 208         case pcxw:
 209         case pcxw_:
 210         case pcxw2:
 211                 if (NULL == proc_runway_root)
 212                 {
 213                         proc_runway_root = proc_mkdir("bus/runway", 0);
 214                 }
 215                 break;
 216         case mako:
 217                 if (NULL == proc_mckinley_root)
 218                 {
 219                         proc_mckinley_root = proc_mkdir("bus/mckinley", 0);
 220                 }
 221                 break;
 222         default:
 223                 /* FIXME: this was added to prevent the compiler
 224                  * complaining about missing pcx, pcxs and pcxt
 225                  * I'm assuming they have neither gsc nor runway */
 226                 break;
 227         }
 228 }
 229
 230 static struct resource central_bus = {
 231         .name   = "Central Bus",
 232         .start  = F_EXTEND(0xfff80000),
 233         .end    = F_EXTEND(0xfffaffff),
 234         .flags  = IORESOURCE_MEM,
 235 };
 236
 237 static struct resource local_broadcast = {
 238         .name   = "Local Broadcast",
 239         .start  = F_EXTEND(0xfffb0000),
 240         .end    = F_EXTEND(0xfffdffff),
 241         .flags  = IORESOURCE_MEM,
 242 };
 243
 244 static struct resource global_broadcast = {
 245         .name   = "Global Broadcast",
 246         .start  = F_EXTEND(0xfffe0000),
 247         .end    = F_EXTEND(0xffffffff),
 248         .flags  = IORESOURCE_MEM,
 249 };
 250
 251 static int __init parisc_init_resources(void)
 252 {
 253         int result;
 254
 255         result = request_resource(&iomem_resource, &central_bus);
 256         if (result < 0) {
 257                 printk(KERN_ERR
 258                        "%s: failed to claim %s address space!\n",
 259                        __FILE__, central_bus.name);
 260                 return result;
 261         }
 262
 263         result = request_resource(&iomem_resource, &local_broadcast);
 264         if (result < 0) {
 265                 printk(KERN_ERR
 266                        "%s: failed to claim %saddress space!\n",
 267                        __FILE__, local_broadcast.name);
 268                 return result;
 269         }
 270
 271         result = request_resource(&iomem_resource, &global_broadcast);
 272         if (result < 0) {
 273                 printk(KERN_ERR
 274                        "%s: failed to claim %s address space!\n",
 275                        __FILE__, global_broadcast.name);
 276                 return result;
 277         }
 278
 279         return 0;
 280 }
 281
 282 extern void gsc_init(void);
 283 extern void processor_init(void);
 284 extern void ccio_init(void);
 285 extern void hppb_init(void);
 286 extern void dino_init(void);
 287 extern void iosapic_init(void);
 288 extern void lba_init(void);
 289 extern void sba_init(void);
 290 extern void eisa_init(void);
 291
 292 static int __init parisc_init(void)
 293 {
 294         parisc_proc_mkdir();
 295         parisc_init_resources();
 296         do_device_inventory();                  /* probe for hardware */
 297
 298         parisc_pdc_chassis_init();
 299
 300         /* set up a new led state on systems shipped LED State panel */
 301         pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
 302
 303         processor_init();
 304         printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n",
 305                         boot_cpu_data.cpu_count,
 306                         boot_cpu_data.cpu_name,
 307                         boot_cpu_data.cpu_hz / 1000000,
 308                         boot_cpu_data.cpu_hz % 1000000  );
 309
 310         /* These are in a non-obvious order, will fix when we have an iotree */
 311 #if defined(CONFIG_IOSAPIC)
 312         iosapic_init();
 313 #endif
 314 #if defined(CONFIG_IOMMU_SBA)
 315         sba_init();
 316 #endif
 317 #if defined(CONFIG_PCI_LBA)
 318         lba_init();
 319 #endif
 320
 321         /* CCIO before any potential subdevices */
 322 #if defined(CONFIG_IOMMU_CCIO)
 323         ccio_init();
 324 #endif
 325
 326         /*
 327          * Need to register Asp & Wax before the EISA adapters for the IRQ
 328          * regions.  EISA must come before PCI to be sure it gets IRQ region
 329          * 0.
 330          */
 331 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
 332         gsc_init();
 333 #endif
 334 #ifdef CONFIG_EISA
 335         eisa_init();
 336 #endif
 337
 338 #if defined(CONFIG_HPPB)
 339         hppb_init();
 340 #endif
 341
 342 #if defined(CONFIG_GSC_DINO)
 343         dino_init();
 344 #endif
 345
 346 #ifdef CONFIG_CHASSIS_LCD_LED
 347         register_led_regions(); /* register LED port info in procfs */
 348 #endif
 349
 350         return 0;
 351 }
 352
 353 arch_initcall(parisc_init);
 354