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 #if defined(CONFIG_BOOTPARAM)
 136         strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
 137         command_line[sizeof(command_line) - 1] = 0;
 138 #endif
 139
 140         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 141
 142 #ifdef CONFIG_UCDIMM
 143         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 144 #endif
 145 #ifdef CONFIG_M68VZ328
 146         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 147 #endif
 148 #ifdef CONFIG_COLDFIRE
 149         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 150 #ifdef CONFIG_M5307
 151         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 152 #endif
 153 #ifdef CONFIG_ELITE
 154         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 155 #endif
 156 #ifdef CONFIG_TELOS
 157         printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
 158 #endif
 159 #endif
 160         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 161
 162 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 163         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 164 #endif
 165
 166 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 167         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 168 #endif
 169
 170 #ifdef CONFIG_M68EZ328ADS
 171         printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 172 #endif
 173
 174 #ifdef CONFIG_ALMA_ANS
 175         printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 176 #endif
 177 #if defined (CONFIG_M68360)
 178         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 179         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 180 #endif
 181 #ifdef CONFIG_DRAGEN2
 182         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 183 #endif
 184 #ifdef CONFIG_M5235EVB
 185         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
 186 #endif
 187
 188 #ifdef DEBUG
 189         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 190                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 191                 (int) &_sdata, (int) &_edata,
 192                 (int) &_sbss, (int) &_ebss);
 193         printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
 194                 "STACK=0x%06x-0x%06x\n",
 195                 (int) &_ebss, (int) memory_start,
 196                 (int) memory_start, (int) memory_end,
 197                 (int) memory_end, (int) _ramend);
 198 #endif
 199
 200         /* Keep a copy of command line */
 201         *cmdline_p = &command_line[0];
 202         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 203         boot_command_line[COMMAND_LINE_SIZE-1] = 0;
 204
 205 #ifdef DEBUG
 206         if (strlen(*cmdline_p))
 207                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 208 #endif
 209
 210 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 211         conswitchp = &dummy_con;
 212 #endif
 213
 214         /*
 215          * Give all the memory to the bootmap allocator, tell it to put the
 216          * boot mem_map at the start of memory.
 217          */
 218         bootmap_size = init_bootmem_node(
 219                         NODE_DATA(0),
 220                         memory_start >> PAGE_SHIFT, /* map goes here */
 221                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 222                         memory_end >> PAGE_SHIFT);
 223         /*
 224          * Free the usable memory, we have to make sure we do not free
 225          * the bootmem bitmap so we then reserve it after freeing it :-)
 226          */
 227         free_bootmem(memory_start, memory_end - memory_start);
 228         reserve_bootmem(memory_start, bootmap_size);
 229
 230         /*
 231          * Get kmalloc into gear.
 232          */
 233         paging_init();
 234 }
 235
 236 /*
 237  *      Get CPU information for use by the procfs.
 238  */
 239 static int show_cpuinfo(struct seq_file *m, void *v)
 240 {
 241         char *cpu, *mmu, *fpu;
 242         u_long clockfreq;
 243
 244         cpu = CPU;
 245         mmu = "none";
 246         fpu = "none";
 247
 248 #ifdef CONFIG_COLDFIRE
 249         clockfreq = (loops_per_jiffy * HZ) * 3;
 250 #else
 251         clockfreq = (loops_per_jiffy * HZ) * 16;
 252 #endif
 253
 254         seq_printf(m, "CPU:\t\t%s\n"
 255                       "MMU:\t\t%s\n"
 256                       "FPU:\t\t%s\n"
 257                       "Clocking:\t%lu.%1luMHz\n"
 258                       "BogoMips:\t%lu.%02lu\n"
 259                       "Calibration:\t%lu loops\n",
 260                       cpu, mmu, fpu,
 261                       clockfreq / 1000000,
 262                       (clockfreq / 100000) % 10,
 263                       (loops_per_jiffy * HZ) / 500000,
 264                       ((loops_per_jiffy * HZ) / 5000) % 100,
 265                       (loops_per_jiffy * HZ));
 266
 267         return 0;
 268 }
 269
 270 static void *c_start(struct seq_file *m, loff_t *pos)
 271 {
 272         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 273 }
 274
 275 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 276 {
 277         ++*pos;
 278         return c_start(m, pos);
 279 }
 280
 281 static void c_stop(struct seq_file *m, void *v)
 282 {
 283 }
 284
 285 struct seq_operations cpuinfo_op = {
 286         .start  = c_start,
 287         .next   = c_next,
 288         .stop   = c_stop,
 289         .show   = show_cpuinfo,
 290 };
 291
 292 void arch_gettod(int *year, int *mon, int *day, int *hour,
 293                  int *min, int *sec)
 294 {
 295         if (mach_gettod)
 296                 mach_gettod(year, mon, day, hour, min, sec);
 297         else
 298                 *year = *mon = *day = *hour = *min = *sec = 0;
 299 }
 300