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/console.h>
  27 #include <linux/genhd.h>
  28 #include <linux/errno.h>
  29 #include <linux/string.h>
  30 #include <linux/major.h>
  31 #include <linux/bootmem.h>
  32 #include <linux/seq_file.h>
  33 #include <linux/root_dev.h>
  34 #include <linux/init.h>
  35
  36 #include <asm/setup.h>
  37 #include <asm/irq.h>
  38 #include <asm/machdep.h>
  39
  40 #ifdef CONFIG_BLK_DEV_INITRD
  41 #include <asm/pgtable.h>
  42 #endif
  43
  44 unsigned long rom_length;
  45 unsigned long memory_start;
  46 unsigned long memory_end;
  47
  48 char command_line[COMMAND_LINE_SIZE];
  49
  50 /* setup some dummy routines */
  51 static void dummy_waitbut(void)
  52 {
  53 }
  54
  55 void (*mach_sched_init) (irqreturn_t (*handler)(int, void *, struct pt_regs *)) = NULL;
  56 void (*mach_tick)( void ) = NULL;
  57 /* machine dependent keyboard functions */
  58 int (*mach_keyb_init) (void) = NULL;
  59 int (*mach_kbdrate) (struct kbd_repeat *) = NULL;
  60 void (*mach_kbd_leds) (unsigned int) = NULL;
  61 /* machine dependent irq functions */
  62 void (*mach_init_IRQ) (void) = NULL;
  63 irqreturn_t (*(*mach_default_handler)[]) (int, void *, struct pt_regs *) = NULL;
  64 void (*mach_enable_irq) (unsigned int) = NULL;
  65 void (*mach_disable_irq) (unsigned int) = NULL;
  66 int (*mach_get_irq_list) (struct seq_file *, void *) = NULL;
  67 void (*mach_process_int) (int irq, struct pt_regs *fp) = NULL;
  68 void (*mach_trap_init) (void);
  69 /* machine dependent timer functions */
  70 unsigned long (*mach_gettimeoffset) (void) = NULL;
  71 void (*mach_gettod) (int*, int*, int*, int*, int*, int*) = NULL;
  72 int (*mach_hwclk) (int, struct hwclk_time*) = NULL;
  73 int (*mach_set_clock_mmss) (unsigned long) = NULL;
  74 void (*mach_mksound)( unsigned int count, unsigned int ticks ) = NULL;
  75 void (*mach_reset)( void ) = NULL;
  76 void (*waitbut)(void) = dummy_waitbut;
  77 void (*mach_debug_init)(void) = NULL;
  78 void (*mach_halt)( void ) = NULL;
  79 void (*mach_power_off)( void ) = NULL;
  80
  81
  82 #ifdef CONFIG_M68000
  83         #define CPU "MC68000"
  84 #endif
  85 #ifdef CONFIG_M68328
  86         #define CPU "MC68328"
  87 #endif
  88 #ifdef CONFIG_M68EZ328
  89         #define CPU "MC68EZ328"
  90 #endif
  91 #ifdef CONFIG_M68VZ328
  92         #define CPU "MC68VZ328"
  93 #endif
  94 #ifdef CONFIG_M68332
  95         #define CPU "MC68332"
  96 #endif
  97 #ifdef CONFIG_M68360
  98         #define CPU "MC68360"
  99 #endif
 100 #if defined(CONFIG_M5206)
 101         #define CPU "COLDFIRE(m5206)"
 102 #endif
 103 #if defined(CONFIG_M5206e)
 104         #define CPU "COLDFIRE(m5206e)"
 105 #endif
 106 #if defined(CONFIG_M5249)
 107         #define CPU "COLDFIRE(m5249)"
 108 #endif
 109 #if defined(CONFIG_M527x)
 110         #define CPU "COLDFIRE(m5270/5271/5274/5275)"
 111 #endif
 112 #if defined(CONFIG_M5272)
 113         #define CPU "COLDFIRE(m5272)"
 114 #endif
 115 #if defined(CONFIG_M528x)
 116         #define CPU "COLDFIRE(m5280/5282)"
 117 #endif
 118 #if defined(CONFIG_M5307)
 119         #define CPU "COLDFIRE(m5307)"
 120 #endif
 121 #if defined(CONFIG_M5407)
 122         #define CPU "COLDFIRE(m5407)"
 123 #endif
 124 #ifndef CPU
 125         #define CPU "UNKOWN"
 126 #endif
 127
 128 /* (es) */
 129 /* note: why is this defined here?  the must be a better place to put this */
 130 #if defined( CONFIG_TELOS) || defined( CONFIG_UCDIMM ) || defined( CONFIG_UCSIMM ) || defined(CONFIG_DRAGEN2) || (defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ))
 131 #define CAT_ROMARRAY
 132 #endif
 133 /* (/es) */
 134
 135 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 136 extern int _ramstart, _ramend;
 137
 138 void setup_arch(char **cmdline_p)
 139 {
 140         int bootmap_size;
 141
 142 #if defined(CAT_ROMARRAY) && defined(DEBUG)
 143         extern int __data_rom_start;
 144         extern int __data_start;
 145         int *romarray = (int *)((int) &__data_rom_start +
 146                               (int)&_edata - (int)&__data_start);
 147 #endif
 148
 149         memory_start = PAGE_ALIGN(_ramstart);
 150         memory_end = _ramend; /* by now the stack is part of the init task */
 151
 152         init_mm.start_code = (unsigned long) &_stext;
 153         init_mm.end_code = (unsigned long) &_etext;
 154         init_mm.end_data = (unsigned long) &_edata;
 155         init_mm.brk = (unsigned long) 0;
 156
 157         config_BSP(&command_line[0], sizeof(command_line));
 158
 159         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 160
 161 #ifdef CONFIG_UCDIMM
 162         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 163 #endif
 164 #ifdef CONFIG_M68VZ328
 165         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 166 #endif
 167 #ifdef CONFIG_COLDFIRE
 168         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 169 #ifdef CONFIG_M5307
 170         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 171 #endif
 172 #ifdef CONFIG_ELITE
 173         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 174 #endif
 175 #ifdef CONFIG_TELOS
 176         printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
 177 #endif
 178 #endif
 179         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 180
 181 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 182         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 183 #endif
 184
 185 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 186         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 187 #endif
 188
 189 #ifdef CONFIG_M68EZ328ADS
 190         printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 191 #endif
 192
 193 #ifdef CONFIG_ALMA_ANS
 194         printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 195 #endif
 196 #if defined (CONFIG_M68360)
 197         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 198         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 199 #endif
 200 #ifdef CONFIG_DRAGEN2
 201         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 202 #endif
 203
 204 #ifdef DEBUG
 205         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 206                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 207                 (int) &_sdata, (int) &_edata,
 208                 (int) &_sbss, (int) &_ebss);
 209         printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
 210                 "STACK=0x%06x-0x%06x\n",
 211 #ifdef CAT_ROMARRAY
 212                 (int) romarray, ((int) romarray) + romarray[2],
 213 #else
 214                 (int) &_ebss, (int) memory_start,
 215 #endif
 216                 (int) memory_start, (int) memory_end,
 217                 (int) memory_end, (int) _ramend);
 218 #endif
 219
 220         /* Keep a copy of command line */
 221         *cmdline_p = &command_line[0];
 222         memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
 223         saved_command_line[COMMAND_LINE_SIZE-1] = 0;
 224
 225 #ifdef DEBUG
 226         if (strlen(*cmdline_p))
 227                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 228 #endif
 229
 230 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 231         conswitchp = &dummy_con;
 232 #endif
 233
 234         /*
 235          * Give all the memory to the bootmap allocator, tell it to put the
 236          * boot mem_map at the start of memory.
 237          */
 238         bootmap_size = init_bootmem_node(
 239                         NODE_DATA(0),
 240                         memory_start >> PAGE_SHIFT, /* map goes here */
 241                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 242                         memory_end >> PAGE_SHIFT);
 243         /*
 244          * Free the usable memory, we have to make sure we do not free
 245          * the bootmem bitmap so we then reserve it after freeing it :-)
 246          */
 247         free_bootmem(memory_start, memory_end - memory_start);
 248         reserve_bootmem(memory_start, bootmap_size);
 249
 250         /*
 251          * Get kmalloc into gear.
 252          */
 253         paging_init();
 254 }
 255
 256 int get_cpuinfo(char * buffer)
 257 {
 258     char *cpu, *mmu, *fpu;
 259     u_long clockfreq;
 260
 261     cpu = CPU;
 262     mmu = "none";
 263     fpu = "none";
 264
 265 #ifdef CONFIG_COLDFIRE
 266     clockfreq = (loops_per_jiffy*HZ)*3;
 267 #else
 268     clockfreq = (loops_per_jiffy*HZ)*16;
 269 #endif
 270
 271     return(sprintf(buffer, "CPU:\t\t%s\n"
 272                    "MMU:\t\t%s\n"
 273                    "FPU:\t\t%s\n"
 274                    "Clocking:\t%lu.%1luMHz\n"
 275                    "BogoMips:\t%lu.%02lu\n"
 276                    "Calibration:\t%lu loops\n",
 277                    cpu, mmu, fpu,
 278                    clockfreq/1000000,(clockfreq/100000)%10,
 279                    (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
 280                    (loops_per_jiffy*HZ)));
 281
 282 }
 283
 284 /*
 285  *      Get CPU information for use by the procfs.
 286  */
 287
 288 static int show_cpuinfo(struct seq_file *m, void *v)
 289 {
 290     char *cpu, *mmu, *fpu;
 291     u_long clockfreq;
 292
 293     cpu = CPU;
 294     mmu = "none";
 295     fpu = "none";
 296
 297 #ifdef CONFIG_COLDFIRE
 298     clockfreq = (loops_per_jiffy*HZ)*3;
 299 #else
 300     clockfreq = (loops_per_jiffy*HZ)*16;
 301 #endif
 302
 303     seq_printf(m, "CPU:\t\t%s\n"
 304                    "MMU:\t\t%s\n"
 305                    "FPU:\t\t%s\n"
 306                    "Clocking:\t%lu.%1luMHz\n"
 307                    "BogoMips:\t%lu.%02lu\n"
 308                    "Calibration:\t%lu loops\n",
 309                    cpu, mmu, fpu,
 310                    clockfreq/1000000,(clockfreq/100000)%10,
 311                    (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
 312                    (loops_per_jiffy*HZ));
 313
 314         return 0;
 315 }
 316
 317 static void *c_start(struct seq_file *m, loff_t *pos)
 318 {
 319         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 320 }
 321
 322 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 323 {
 324         ++*pos;
 325         return c_start(m, pos);
 326 }
 327
 328 static void c_stop(struct seq_file *m, void *v)
 329 {
 330 }
 331
 332 struct seq_operations cpuinfo_op = {
 333         .start  = c_start,
 334         .next   = c_next,
 335         .stop   = c_stop,
 336         .show   = show_cpuinfo,
 337 };
 338
 339 void arch_gettod(int *year, int *mon, int *day, int *hour,
 340                  int *min, int *sec)
 341 {
 342         if (mach_gettod)
 343                 mach_gettod(year, mon, day, hour, min, sec);
 344         else
 345                 *year = *mon = *day = *hour = *min = *sec = 0;
 346 }
 347