arch/m68knommu/kernel/setup.c

   1 /*
   2  *  linux/arch/m68knommu/kernel/setup.c
   3  *
   4  *  Copyright (C) 1999-2007  Greg Ungerer (gerg@snapgear.com)
   5  *  Copyright (C) 1998,1999  D. Jeff Dionne <jeff@uClinux.org>
   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/kernel.h>
  20 #include <linux/sched.h>
  21 #include <linux/delay.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/fb.h>
  24 #include <linux/module.h>
  25 #include <linux/console.h>
  26 #include <linux/errno.h>
  27 #include <linux/string.h>
  28 #include <linux/bootmem.h>
  29 #include <linux/seq_file.h>
  30 #include <linux/init.h>
  31
  32 #include <asm/setup.h>
  33 #include <asm/irq.h>
  34 #include <asm/machdep.h>
  35 #include <asm/pgtable.h>
  36
  37 unsigned long memory_start;
  38 unsigned long memory_end;
  39
  40 EXPORT_SYMBOL(memory_start);
  41 EXPORT_SYMBOL(memory_end);
  42
  43 char __initdata command_line[COMMAND_LINE_SIZE];
  44
  45 void (*mach_trap_init)(void);
  46
  47 /* machine dependent timer functions */
  48 void (*mach_sched_init)(irq_handler_t handler);
  49 void (*mach_tick)(void);
  50 void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
  51 int (*mach_set_clock_mmss)(unsigned long);
  52 unsigned long (*mach_gettimeoffset)(void);
  53
  54 /* machine dependent reboot functions */
  55 void (*mach_reset)(void);
  56 void (*mach_halt)(void);
  57 void (*mach_power_off)(void);
  58
  59
  60 #ifdef CONFIG_M68000
  61         #define CPU "MC68000"
  62 #endif
  63 #ifdef CONFIG_M68328
  64         #define CPU "MC68328"
  65 #endif
  66 #ifdef CONFIG_M68EZ328
  67         #define CPU "MC68EZ328"
  68 #endif
  69 #ifdef CONFIG_M68VZ328
  70         #define CPU "MC68VZ328"
  71 #endif
  72 #ifdef CONFIG_M68332
  73         #define CPU "MC68332"
  74 #endif
  75 #ifdef CONFIG_M68360
  76         #define CPU "MC68360"
  77 #endif
  78 #if defined(CONFIG_M5206)
  79         #define CPU "COLDFIRE(m5206)"
  80 #endif
  81 #if defined(CONFIG_M5206e)
  82         #define CPU "COLDFIRE(m5206e)"
  83 #endif
  84 #if defined(CONFIG_M520x)
  85         #define CPU "COLDFIRE(m520x)"
  86 #endif
  87 #if defined(CONFIG_M523x)
  88         #define CPU "COLDFIRE(m523x)"
  89 #endif
  90 #if defined(CONFIG_M5249)
  91         #define CPU "COLDFIRE(m5249)"
  92 #endif
  93 #if defined(CONFIG_M5271)
  94         #define CPU "COLDFIRE(m5270/5271)"
  95 #endif
  96 #if defined(CONFIG_M5272)
  97         #define CPU "COLDFIRE(m5272)"
  98 #endif
  99 #if defined(CONFIG_M5275)
 100         #define CPU "COLDFIRE(m5274/5275)"
 101 #endif
 102 #if defined(CONFIG_M528x)
 103         #define CPU "COLDFIRE(m5280/5282)"
 104 #endif
 105 #if defined(CONFIG_M5307)
 106         #define CPU "COLDFIRE(m5307)"
 107 #endif
 108 #if defined(CONFIG_M532x)
 109         #define CPU "COLDFIRE(m532x)"
 110 #endif
 111 #if defined(CONFIG_M5407)
 112         #define CPU "COLDFIRE(m5407)"
 113 #endif
 114 #ifndef CPU
 115         #define CPU "UNKNOWN"
 116 #endif
 117
 118 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 119 extern int _ramstart, _ramend;
 120
 121 void setup_arch(char **cmdline_p)
 122 {
 123         int bootmap_size;
 124
 125         memory_start = PAGE_ALIGN(_ramstart);
 126         memory_end = _ramend;
 127
 128         init_mm.start_code = (unsigned long) &_stext;
 129         init_mm.end_code = (unsigned long) &_etext;
 130         init_mm.end_data = (unsigned long) &_edata;
 131         init_mm.brk = (unsigned long) 0;
 132
 133         config_BSP(&command_line[0], sizeof(command_line));
 134
 135         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 136
 137 #ifdef CONFIG_UCDIMM
 138         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 139 #endif
 140 #ifdef CONFIG_M68VZ328
 141         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 142 #endif
 143 #ifdef CONFIG_COLDFIRE
 144         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 145 #ifdef CONFIG_M5307
 146         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 147 #endif
 148 #ifdef CONFIG_ELITE
 149         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 150 #endif
 151 #ifdef CONFIG_TELOS
 152         printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
 153 #endif
 154 #endif
 155         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 156
 157 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 158         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 159 #endif
 160
 161 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 162         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 163 #endif
 164
 165 #ifdef CONFIG_M68EZ328ADS
 166         printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 167 #endif
 168
 169 #ifdef CONFIG_ALMA_ANS
 170         printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 171 #endif
 172 #if defined (CONFIG_M68360)
 173         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 174         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 175 #endif
 176 #ifdef CONFIG_DRAGEN2
 177         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 178 #endif
 179 #ifdef CONFIG_M5235EVB
 180         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
 181 #endif
 182
 183 #ifdef DEBUG
 184         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 185                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 186                 (int) &_sdata, (int) &_edata,
 187                 (int) &_sbss, (int) &_ebss);
 188         printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
 189                 "STACK=0x%06x-0x%06x\n",
 190                 (int) &_ebss, (int) memory_start,
 191                 (int) memory_start, (int) memory_end,
 192                 (int) memory_end, (int) _ramend);
 193 #endif
 194
 195         /* Keep a copy of command line */
 196         *cmdline_p = &command_line[0];
 197         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 198         boot_command_line[COMMAND_LINE_SIZE-1] = 0;
 199
 200 #ifdef DEBUG
 201         if (strlen(*cmdline_p))
 202                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 203 #endif
 204
 205 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 206         conswitchp = &dummy_con;
 207 #endif
 208
 209         /*
 210          * Give all the memory to the bootmap allocator, tell it to put the
 211          * boot mem_map at the start of memory.
 212          */
 213         bootmap_size = init_bootmem_node(
 214                         NODE_DATA(0),
 215                         memory_start >> PAGE_SHIFT, /* map goes here */
 216                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 217                         memory_end >> PAGE_SHIFT);
 218         /*
 219          * Free the usable memory, we have to make sure we do not free
 220          * the bootmem bitmap so we then reserve it after freeing it :-)
 221          */
 222         free_bootmem(memory_start, memory_end - memory_start);
 223         reserve_bootmem(memory_start, bootmap_size);
 224
 225         /*
 226          * Get kmalloc into gear.
 227          */
 228         paging_init();
 229 }
 230
 231 /*
 232  *      Get CPU information for use by the procfs.
 233  */
 234 static int show_cpuinfo(struct seq_file *m, void *v)
 235 {
 236         char *cpu, *mmu, *fpu;
 237         u_long clockfreq;
 238
 239         cpu = CPU;
 240         mmu = "none";
 241         fpu = "none";
 242
 243 #ifdef CONFIG_COLDFIRE
 244         clockfreq = (loops_per_jiffy * HZ) * 3;
 245 #else
 246         clockfreq = (loops_per_jiffy * HZ) * 16;
 247 #endif
 248
 249         seq_printf(m, "CPU:\t\t%s\n"
 250                       "MMU:\t\t%s\n"
 251                       "FPU:\t\t%s\n"
 252                       "Clocking:\t%lu.%1luMHz\n"
 253                       "BogoMips:\t%lu.%02lu\n"
 254                       "Calibration:\t%lu loops\n",
 255                       cpu, mmu, fpu,
 256                       clockfreq / 1000000,
 257                       (clockfreq / 100000) % 10,
 258                       (loops_per_jiffy * HZ) / 500000,
 259                       ((loops_per_jiffy * HZ) / 5000) % 100,
 260                       (loops_per_jiffy * HZ));
 261
 262         return 0;
 263 }
 264
 265 static void *c_start(struct seq_file *m, loff_t *pos)
 266 {
 267         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 268 }
 269
 270 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 271 {
 272         ++*pos;
 273         return c_start(m, pos);
 274 }
 275
 276 static void c_stop(struct seq_file *m, void *v)
 277 {
 278 }
 279
 280 struct seq_operations cpuinfo_op = {
 281         .start  = c_start,
 282         .next   = c_next,
 283         .stop   = c_stop,
 284         .show   = show_cpuinfo,
 285 };
 286
 287 void arch_gettod(int *year, int *mon, int *day, int *hour,
 288                  int *min, int *sec)
 289 {
 290         if (mach_gettod)
 291                 mach_gettod(year, mon, day, hour, min, sec);
 292         else
 293                 *year = *mon = *day = *hour = *min = *sec = 0;
 294 }
 295