arch/m68knommu/kernel/setup.c

   1 /*
   2  *  linux/arch/m68knommu/kernel/setup.c
   3  *
   4  *  Copyright (C) 1999-2004  Greg Ungerer (gerg@snapgear.com)
   5  *  Copyright (C) 1998,1999  D. Jeff Dionne <jeff@lineo.ca>
   6  *  Copyleft  ()) 2000       James D. Schettine {james@telos-systems.com}
   7  *  Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
   8  *  Copyright (C) 1995       Hamish Macdonald
   9  *  Copyright (C) 2000       Lineo Inc. (www.lineo.com)
  10  *  Copyright (C) 2001       Lineo, Inc. <www.lineo.com>
  11  *
  12  *  68VZ328 Fixes/support    Evan Stawnyczy <e@lineo.ca>
  13  */
  14
  15 /*
  16  * This file handles the architecture-dependent parts of system setup
  17  */
  18
  19 #include <linux/config.h>
  20 #include <linux/kernel.h>
  21 #include <linux/sched.h>
  22 #include <linux/delay.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/fs.h>
  25 #include <linux/fb.h>
  26 #include <linux/module.h>
  27 #include <linux/console.h>
  28 #include <linux/genhd.h>
  29 #include <linux/errno.h>
  30 #include <linux/string.h>
  31 #include <linux/major.h>
  32 #include <linux/bootmem.h>
  33 #include <linux/seq_file.h>
  34 #include <linux/root_dev.h>
  35 #include <linux/init.h>
  36
  37 #include <asm/setup.h>
  38 #include <asm/irq.h>
  39 #include <asm/machdep.h>
  40
  41 #ifdef CONFIG_BLK_DEV_INITRD
  42 #include <asm/pgtable.h>
  43 #endif
  44
  45 unsigned long rom_length;
  46 unsigned long memory_start;
  47 unsigned long memory_end;
  48
  49 EXPORT_SYMBOL(memory_start);
  50 EXPORT_SYMBOL(memory_end);
  51
  52 char command_line[COMMAND_LINE_SIZE];
  53
  54 /* setup some dummy routines */
  55 static void dummy_waitbut(void)
  56 {
  57 }
  58
  59 void (*mach_sched_init) (irqreturn_t (*handler)(int, void *, struct pt_regs *)) = NULL;
  60 void (*mach_tick)( void ) = NULL;
  61 /* machine dependent keyboard functions */
  62 int (*mach_keyb_init) (void) = NULL;
  63 int (*mach_kbdrate) (struct kbd_repeat *) = NULL;
  64 void (*mach_kbd_leds) (unsigned int) = NULL;
  65 /* machine dependent irq functions */
  66 void (*mach_init_IRQ) (void) = NULL;
  67 irqreturn_t (*(*mach_default_handler)[]) (int, void *, struct pt_regs *) = NULL;
  68 void (*mach_enable_irq) (unsigned int) = NULL;
  69 void (*mach_disable_irq) (unsigned int) = NULL;
  70 int (*mach_get_irq_list) (struct seq_file *, void *) = NULL;
  71 void (*mach_process_int) (int irq, struct pt_regs *fp) = NULL;
  72 void (*mach_trap_init) (void);
  73 /* machine dependent timer functions */
  74 unsigned long (*mach_gettimeoffset) (void) = NULL;
  75 void (*mach_gettod) (int*, int*, int*, int*, int*, int*) = NULL;
  76 int (*mach_hwclk) (int, struct hwclk_time*) = NULL;
  77 int (*mach_set_clock_mmss) (unsigned long) = NULL;
  78 void (*mach_mksound)( unsigned int count, unsigned int ticks ) = NULL;
  79 void (*mach_reset)( void ) = NULL;
  80 void (*waitbut)(void) = dummy_waitbut;
  81 void (*mach_debug_init)(void) = NULL;
  82 void (*mach_halt)( void ) = NULL;
  83 void (*mach_power_off)( void ) = NULL;
  84
  85
  86 #ifdef CONFIG_M68000
  87         #define CPU "MC68000"
  88 #endif
  89 #ifdef CONFIG_M68328
  90         #define CPU "MC68328"
  91 #endif
  92 #ifdef CONFIG_M68EZ328
  93         #define CPU "MC68EZ328"
  94 #endif
  95 #ifdef CONFIG_M68VZ328
  96         #define CPU "MC68VZ328"
  97 #endif
  98 #ifdef CONFIG_M68332
  99         #define CPU "MC68332"
 100 #endif
 101 #ifdef CONFIG_M68360
 102         #define CPU "MC68360"
 103 #endif
 104 #if defined(CONFIG_M5206)
 105         #define CPU "COLDFIRE(m5206)"
 106 #endif
 107 #if defined(CONFIG_M5206e)
 108         #define CPU "COLDFIRE(m5206e)"
 109 #endif
 110 #if defined(CONFIG_M523x)
 111         #define CPU "COLDFIRE(m523x)"
 112 #endif
 113 #if defined(CONFIG_M5249)
 114         #define CPU "COLDFIRE(m5249)"
 115 #endif
 116 #if defined(CONFIG_M5271)
 117         #define CPU "COLDFIRE(m5270/5271)"
 118 #endif
 119 #if defined(CONFIG_M5272)
 120         #define CPU "COLDFIRE(m5272)"
 121 #endif
 122 #if defined(CONFIG_M5275)
 123         #define CPU "COLDFIRE(m5274/5275)"
 124 #endif
 125 #if defined(CONFIG_M528x)
 126         #define CPU "COLDFIRE(m5280/5282)"
 127 #endif
 128 #if defined(CONFIG_M5307)
 129         #define CPU "COLDFIRE(m5307)"
 130 #endif
 131 #if defined(CONFIG_M5407)
 132         #define CPU "COLDFIRE(m5407)"
 133 #endif
 134 #ifndef CPU
 135         #define CPU "UNKOWN"
 136 #endif
 137
 138 /* (es) */
 139 /* note: why is this defined here?  the must be a better place to put this */
 140 #if defined( CONFIG_TELOS) || defined( CONFIG_UCDIMM ) || defined( CONFIG_UCSIMM ) || defined(CONFIG_DRAGEN2) || (defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ))
 141 #define CAT_ROMARRAY
 142 #endif
 143 /* (/es) */
 144
 145 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 146 extern int _ramstart, _ramend;
 147
 148 void setup_arch(char **cmdline_p)
 149 {
 150         int bootmap_size;
 151
 152 #if defined(CAT_ROMARRAY) && defined(DEBUG)
 153         extern int __data_rom_start;
 154         extern int __data_start;
 155         int *romarray = (int *)((int) &__data_rom_start +
 156                               (int)&_edata - (int)&__data_start);
 157 #endif
 158
 159         memory_start = PAGE_ALIGN(_ramstart);
 160         memory_end = _ramend; /* by now the stack is part of the init task */
 161
 162         init_mm.start_code = (unsigned long) &_stext;
 163         init_mm.end_code = (unsigned long) &_etext;
 164         init_mm.end_data = (unsigned long) &_edata;
 165         init_mm.brk = (unsigned long) 0;
 166
 167         config_BSP(&command_line[0], sizeof(command_line));
 168
 169         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 170
 171 #ifdef CONFIG_UCDIMM
 172         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 173 #endif
 174 #ifdef CONFIG_M68VZ328
 175         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 176 #endif
 177 #ifdef CONFIG_COLDFIRE
 178         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 179 #ifdef CONFIG_M5307
 180         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 181 #endif
 182 #ifdef CONFIG_ELITE
 183         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 184 #endif
 185 #ifdef CONFIG_TELOS
 186         printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
 187 #endif
 188 #endif
 189         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 190
 191 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 192         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 193 #endif
 194
 195 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 196         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 197 #endif
 198
 199 #ifdef CONFIG_M68EZ328ADS
 200         printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 201 #endif
 202
 203 #ifdef CONFIG_ALMA_ANS
 204         printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 205 #endif
 206 #if defined (CONFIG_M68360)
 207         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 208         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 209 #endif
 210 #ifdef CONFIG_DRAGEN2
 211         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 212 #endif
 213 #ifdef CONFIG_M5235EVB
 214         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
 215 #endif
 216
 217 #ifdef DEBUG
 218         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 219                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 220                 (int) &_sdata, (int) &_edata,
 221                 (int) &_sbss, (int) &_ebss);
 222         printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
 223                 "STACK=0x%06x-0x%06x\n",
 224 #ifdef CAT_ROMARRAY
 225                 (int) romarray, ((int) romarray) + romarray[2],
 226 #else
 227                 (int) &_ebss, (int) memory_start,
 228 #endif
 229                 (int) memory_start, (int) memory_end,
 230                 (int) memory_end, (int) _ramend);
 231 #endif
 232
 233         /* Keep a copy of command line */
 234         *cmdline_p = &command_line[0];
 235         memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
 236         saved_command_line[COMMAND_LINE_SIZE-1] = 0;
 237
 238 #ifdef DEBUG
 239         if (strlen(*cmdline_p))
 240                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 241 #endif
 242
 243 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 244         conswitchp = &dummy_con;
 245 #endif
 246
 247         /*
 248          * Give all the memory to the bootmap allocator, tell it to put the
 249          * boot mem_map at the start of memory.
 250          */
 251         bootmap_size = init_bootmem_node(
 252                         NODE_DATA(0),
 253                         memory_start >> PAGE_SHIFT, /* map goes here */
 254                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 255                         memory_end >> PAGE_SHIFT);
 256         /*
 257          * Free the usable memory, we have to make sure we do not free
 258          * the bootmem bitmap so we then reserve it after freeing it :-)
 259          */
 260         free_bootmem(memory_start, memory_end - memory_start);
 261         reserve_bootmem(memory_start, bootmap_size);
 262
 263         /*
 264          * Get kmalloc into gear.
 265          */
 266         paging_init();
 267 }
 268
 269 int get_cpuinfo(char * buffer)
 270 {
 271     char *cpu, *mmu, *fpu;
 272     u_long clockfreq;
 273
 274     cpu = CPU;
 275     mmu = "none";
 276     fpu = "none";
 277
 278 #ifdef CONFIG_COLDFIRE
 279     clockfreq = (loops_per_jiffy*HZ)*3;
 280 #else
 281     clockfreq = (loops_per_jiffy*HZ)*16;
 282 #endif
 283
 284     return(sprintf(buffer, "CPU:\t\t%s\n"
 285                    "MMU:\t\t%s\n"
 286                    "FPU:\t\t%s\n"
 287                    "Clocking:\t%lu.%1luMHz\n"
 288                    "BogoMips:\t%lu.%02lu\n"
 289                    "Calibration:\t%lu loops\n",
 290                    cpu, mmu, fpu,
 291                    clockfreq/1000000,(clockfreq/100000)%10,
 292                    (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
 293                    (loops_per_jiffy*HZ)));
 294
 295 }
 296
 297 /*
 298  *      Get CPU information for use by the procfs.
 299  */
 300
 301 static int show_cpuinfo(struct seq_file *m, void *v)
 302 {
 303     char *cpu, *mmu, *fpu;
 304     u_long clockfreq;
 305
 306     cpu = CPU;
 307     mmu = "none";
 308     fpu = "none";
 309
 310 #ifdef CONFIG_COLDFIRE
 311     clockfreq = (loops_per_jiffy*HZ)*3;
 312 #else
 313     clockfreq = (loops_per_jiffy*HZ)*16;
 314 #endif
 315
 316     seq_printf(m, "CPU:\t\t%s\n"
 317                    "MMU:\t\t%s\n"
 318                    "FPU:\t\t%s\n"
 319                    "Clocking:\t%lu.%1luMHz\n"
 320                    "BogoMips:\t%lu.%02lu\n"
 321                    "Calibration:\t%lu loops\n",
 322                    cpu, mmu, fpu,
 323                    clockfreq/1000000,(clockfreq/100000)%10,
 324                    (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
 325                    (loops_per_jiffy*HZ));
 326
 327         return 0;
 328 }
 329
 330 static void *c_start(struct seq_file *m, loff_t *pos)
 331 {
 332         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 333 }
 334
 335 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 336 {
 337         ++*pos;
 338         return c_start(m, pos);
 339 }
 340
 341 static void c_stop(struct seq_file *m, void *v)
 342 {
 343 }
 344
 345 struct seq_operations cpuinfo_op = {
 346         .start  = c_start,
 347         .next   = c_next,
 348         .stop   = c_stop,
 349         .show   = show_cpuinfo,
 350 };
 351
 352 void arch_gettod(int *year, int *mon, int *day, int *hour,
 353                  int *min, int *sec)
 354 {
 355         if (mach_gettod)
 356                 mach_gettod(year, mon, day, hour, min, sec);
 357         else
 358                 *year = *mon = *day = *hour = *min = *sec = 0;
 359 }
 360