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 #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA))
  57 int parisc_bus_is_phys = 1;     /* Assume no IOMMU is present */
  58 EXPORT_SYMBOL(parisc_bus_is_phys);
  59 #endif
  60
  61 /* This sets the vmerge boundary and size, it's here because it has to
  62  * be available on all platforms (zero means no-virtual merging) */
  63 unsigned long parisc_vmerge_boundary = 0;
  64 unsigned long parisc_vmerge_max_size = 0;
  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                 saved_command_line[0] = '\0';
  76         } else {
  77                 strcpy(saved_command_line, (char *)__va(boot_args[1]));
  78
  79 #ifdef CONFIG_BLK_DEV_INITRD
  80                 if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
  81                 {
  82                     initrd_start = (unsigned long)__va(boot_args[2]);
  83                     initrd_end = (unsigned long)__va(boot_args[3]);
  84                 }
  85 #endif
  86         }
  87
  88         strcpy(command_line, saved_command_line);
  89         *cmdline_p = command_line;
  90 }
  91
  92 #ifdef CONFIG_PA11
  93 void __init dma_ops_init(void)
  94 {
  95         switch (boot_cpu_data.cpu_type) {
  96         case pcx:
  97                 /*
  98                  * We've got way too many dependencies on 1.1 semantics
  99                  * to support 1.0 boxes at this point.
 100                  */
 101                 panic(  "PA-RISC Linux currently only supports machines that conform to\n"
 102                         "the PA-RISC 1.1 or 2.0 architecture specification.\n");
 103
 104         case pcxs:
 105         case pcxt:
 106                 hppa_dma_ops = &pcx_dma_ops;
 107                 break;
 108         case pcxl2:
 109                 pa7300lc_init();
 110         case pcxl: /* falls through */
 111                 hppa_dma_ops = &pcxl_dma_ops;
 112                 break;
 113         default:
 114                 break;
 115         }
 116 }
 117 #endif
 118
 119 extern int init_per_cpu(int cpuid);
 120 extern void collect_boot_cpu_data(void);
 121
 122 void __init setup_arch(char **cmdline_p)
 123 {
 124 #ifdef __LP64__
 125         extern int parisc_narrow_firmware;
 126 #endif
 127
 128         init_per_cpu(smp_processor_id());       /* Set Modes & Enable FP */
 129
 130 #ifdef __LP64__
 131         printk(KERN_INFO "The 64-bit Kernel has started...\n");
 132 #else
 133         printk(KERN_INFO "The 32-bit Kernel has started...\n");
 134 #endif
 135
 136         pdc_console_init();
 137
 138 #ifdef __LP64__
 139         if(parisc_narrow_firmware) {
 140                 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
 141         }
 142 #endif
 143         setup_pdc();
 144         setup_cmdline(cmdline_p);
 145         collect_boot_cpu_data();
 146         do_memory_inventory();  /* probe for physical memory */
 147         parisc_cache_init();
 148         paging_init();
 149
 150 #ifdef CONFIG_CHASSIS_LCD_LED
 151         /* initialize the LCD/LED after boot_cpu_data is available ! */
 152         led_init();             /* LCD/LED initialization */
 153 #endif
 154
 155 #ifdef CONFIG_PA11
 156         dma_ops_init();
 157 #endif
 158
 159 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
 160         conswitchp = &dummy_con;        /* we use take_over_console() later ! */
 161 #endif
 162
 163 }
 164
 165 /*
 166  * Display cpu info for all cpu's.
 167  * for parisc this is in processor.c
 168  */
 169 extern int show_cpuinfo (struct seq_file *m, void *v);
 170
 171 static void *
 172 c_start (struct seq_file *m, loff_t *pos)
 173 {
 174         /* Looks like the caller will call repeatedly until we return
 175          * 0, signaling EOF perhaps.  This could be used to sequence
 176          * through CPUs for example.  Since we print all cpu info in our
 177          * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
 178          * we only allow for one "position".  */
 179         return ((long)*pos < 1) ? (void *)1 : NULL;
 180 }
 181
 182 static void *
 183 c_next (struct seq_file *m, void *v, loff_t *pos)
 184 {
 185         ++*pos;
 186         return c_start(m, pos);
 187 }
 188
 189 static void
 190 c_stop (struct seq_file *m, void *v)
 191 {
 192 }
 193
 194 struct seq_operations cpuinfo_op = {
 195         .start  = c_start,
 196         .next   = c_next,
 197         .stop   = c_stop,
 198         .show   = show_cpuinfo
 199 };
 200
 201 static void __init parisc_proc_mkdir(void)
 202 {
 203         /*
 204         ** Can't call proc_mkdir() until after proc_root_init() has been
 205         ** called by start_kernel(). In other words, this code can't
 206         ** live in arch/.../setup.c because start_parisc() calls
 207         ** start_kernel().
 208         */
 209         switch (boot_cpu_data.cpu_type) {
 210         case pcxl:
 211         case pcxl2:
 212                 if (NULL == proc_gsc_root)
 213                 {
 214                         proc_gsc_root = proc_mkdir("bus/gsc", NULL);
 215                 }
 216                 break;
 217         case pcxt_:
 218         case pcxu:
 219         case pcxu_:
 220         case pcxw:
 221         case pcxw_:
 222         case pcxw2:
 223                 if (NULL == proc_runway_root)
 224                 {
 225                         proc_runway_root = proc_mkdir("bus/runway", NULL);
 226                 }
 227                 break;
 228         case mako:
 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         parisc_proc_mkdir();
 307         parisc_init_resources();
 308         do_device_inventory();                  /* probe for hardware */
 309
 310         parisc_pdc_chassis_init();
 311
 312         /* set up a new led state on systems shipped LED State panel */
 313         pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
 314
 315         processor_init();
 316         printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n",
 317                         boot_cpu_data.cpu_count,
 318                         boot_cpu_data.cpu_name,
 319                         boot_cpu_data.cpu_hz / 1000000,
 320                         boot_cpu_data.cpu_hz % 1000000  );
 321
 322         parisc_setup_cache_timing();
 323
 324         /* These are in a non-obvious order, will fix when we have an iotree */
 325 #if defined(CONFIG_IOSAPIC)
 326         iosapic_init();
 327 #endif
 328 #if defined(CONFIG_IOMMU_SBA)
 329         sba_init();
 330 #endif
 331 #if defined(CONFIG_PCI_LBA)
 332         lba_init();
 333 #endif
 334
 335         /* CCIO before any potential subdevices */
 336 #if defined(CONFIG_IOMMU_CCIO)
 337         ccio_init();
 338 #endif
 339
 340         /*
 341          * Need to register Asp & Wax before the EISA adapters for the IRQ
 342          * regions.  EISA must come before PCI to be sure it gets IRQ region
 343          * 0.
 344          */
 345 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
 346         gsc_init();
 347 #endif
 348 #ifdef CONFIG_EISA
 349         eisa_init();
 350 #endif
 351
 352 #if defined(CONFIG_HPPB)
 353         hppb_init();
 354 #endif
 355
 356 #if defined(CONFIG_GSC_DINO)
 357         dino_init();
 358 #endif
 359
 360 #ifdef CONFIG_CHASSIS_LCD_LED
 361         register_led_regions(); /* register LED port info in procfs */
 362 #endif
 363
 364         return 0;
 365 }
 366
 367 arch_initcall(parisc_init);
 368