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 /* machine dependent timer functions */
  46 void (*mach_sched_init)(irq_handler_t handler);
  47 void (*mach_tick)(void);
  48 void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
  49 int (*mach_set_clock_mmss)(unsigned long);
  50 unsigned long (*mach_gettimeoffset)(void);
  51
  52 /* machine dependent reboot functions */
  53 void (*mach_reset)(void);
  54 void (*mach_halt)(void);
  55 void (*mach_power_off)(void);
  56
  57
  58 #ifdef CONFIG_M68000
  59         #define CPU "MC68000"
  60 #endif
  61 #ifdef CONFIG_M68328
  62         #define CPU "MC68328"
  63 #endif
  64 #ifdef CONFIG_M68EZ328
  65         #define CPU "MC68EZ328"
  66 #endif
  67 #ifdef CONFIG_M68VZ328
  68         #define CPU "MC68VZ328"
  69 #endif
  70 #ifdef CONFIG_M68332
  71         #define CPU "MC68332"
  72 #endif
  73 #ifdef CONFIG_M68360
  74         #define CPU "MC68360"
  75 #endif
  76 #if defined(CONFIG_M5206)
  77         #define CPU "COLDFIRE(m5206)"
  78 #endif
  79 #if defined(CONFIG_M5206e)
  80         #define CPU "COLDFIRE(m5206e)"
  81 #endif
  82 #if defined(CONFIG_M520x)
  83         #define CPU "COLDFIRE(m520x)"
  84 #endif
  85 #if defined(CONFIG_M523x)
  86         #define CPU "COLDFIRE(m523x)"
  87 #endif
  88 #if defined(CONFIG_M5249)
  89         #define CPU "COLDFIRE(m5249)"
  90 #endif
  91 #if defined(CONFIG_M5271)
  92         #define CPU "COLDFIRE(m5270/5271)"
  93 #endif
  94 #if defined(CONFIG_M5272)
  95         #define CPU "COLDFIRE(m5272)"
  96 #endif
  97 #if defined(CONFIG_M5275)
  98         #define CPU "COLDFIRE(m5274/5275)"
  99 #endif
 100 #if defined(CONFIG_M528x)
 101         #define CPU "COLDFIRE(m5280/5282)"
 102 #endif
 103 #if defined(CONFIG_M5307)
 104         #define CPU "COLDFIRE(m5307)"
 105 #endif
 106 #if defined(CONFIG_M532x)
 107         #define CPU "COLDFIRE(m532x)"
 108 #endif
 109 #if defined(CONFIG_M5407)
 110         #define CPU "COLDFIRE(m5407)"
 111 #endif
 112 #ifndef CPU
 113         #define CPU "UNKNOWN"
 114 #endif
 115
 116 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 117 extern int _ramstart, _ramend;
 118
 119 void setup_arch(char **cmdline_p)
 120 {
 121         int bootmap_size;
 122
 123         memory_start = PAGE_ALIGN(_ramstart);
 124         memory_end = _ramend;
 125
 126         init_mm.start_code = (unsigned long) &_stext;
 127         init_mm.end_code = (unsigned long) &_etext;
 128         init_mm.end_data = (unsigned long) &_edata;
 129         init_mm.brk = (unsigned long) 0;
 130
 131         config_BSP(&command_line[0], sizeof(command_line));
 132
 133 #if defined(CONFIG_BOOTPARAM)
 134         strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
 135         command_line[sizeof(command_line) - 1] = 0;
 136 #endif
 137
 138         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 139
 140 #ifdef CONFIG_UCDIMM
 141         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 142 #endif
 143 #ifdef CONFIG_M68VZ328
 144         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 145 #endif
 146 #ifdef CONFIG_COLDFIRE
 147         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 148 #ifdef CONFIG_M5307
 149         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 150 #endif
 151 #ifdef CONFIG_ELITE
 152         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 153 #endif
 154 #ifdef CONFIG_TELOS
 155         printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
 156 #endif
 157 #endif
 158         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 159
 160 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 161         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 162 #endif
 163
 164 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 165         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 166 #endif
 167
 168 #ifdef CONFIG_M68EZ328ADS
 169         printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 170 #endif
 171
 172 #ifdef CONFIG_ALMA_ANS
 173         printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
 174 #endif
 175 #if defined (CONFIG_M68360)
 176         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 177         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 178 #endif
 179 #ifdef CONFIG_DRAGEN2
 180         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 181 #endif
 182 #ifdef CONFIG_M5235EVB
 183         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
 184 #endif
 185
 186 #ifdef DEBUG
 187         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 188                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 189                 (int) &_sdata, (int) &_edata,
 190                 (int) &_sbss, (int) &_ebss);
 191         printk(KERN_DEBUG "MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ",
 192                 (int) &_ebss, (int) memory_start,
 193                 (int) memory_start, (int) memory_end);
 194 #endif
 195
 196         /* Keep a copy of command line */
 197         *cmdline_p = &command_line[0];
 198         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 199         boot_command_line[COMMAND_LINE_SIZE-1] = 0;
 200
 201 #ifdef DEBUG
 202         if (strlen(*cmdline_p))
 203                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 204 #endif
 205
 206 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 207         conswitchp = &dummy_con;
 208 #endif
 209
 210         /*
 211          * Give all the memory to the bootmap allocator, tell it to put the
 212          * boot mem_map at the start of memory.
 213          */
 214         bootmap_size = init_bootmem_node(
 215                         NODE_DATA(0),
 216                         memory_start >> PAGE_SHIFT, /* map goes here */
 217                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 218                         memory_end >> PAGE_SHIFT);
 219         /*
 220          * Free the usable memory, we have to make sure we do not free
 221          * the bootmem bitmap so we then reserve it after freeing it :-)
 222          */
 223         free_bootmem(memory_start, memory_end - memory_start);
 224         reserve_bootmem(memory_start, bootmap_size);
 225
 226         /*
 227          * Get kmalloc into gear.
 228          */
 229         paging_init();
 230 }
 231
 232 /*
 233  *      Get CPU information for use by the procfs.
 234  */
 235 static int show_cpuinfo(struct seq_file *m, void *v)
 236 {
 237         char *cpu, *mmu, *fpu;
 238         u_long clockfreq;
 239
 240         cpu = CPU;
 241         mmu = "none";
 242         fpu = "none";
 243
 244 #ifdef CONFIG_COLDFIRE
 245         clockfreq = (loops_per_jiffy * HZ) * 3;
 246 #else
 247         clockfreq = (loops_per_jiffy * HZ) * 16;
 248 #endif
 249
 250         seq_printf(m, "CPU:\t\t%s\n"
 251                       "MMU:\t\t%s\n"
 252                       "FPU:\t\t%s\n"
 253                       "Clocking:\t%lu.%1luMHz\n"
 254                       "BogoMips:\t%lu.%02lu\n"
 255                       "Calibration:\t%lu loops\n",
 256                       cpu, mmu, fpu,
 257                       clockfreq / 1000000,
 258                       (clockfreq / 100000) % 10,
 259                       (loops_per_jiffy * HZ) / 500000,
 260                       ((loops_per_jiffy * HZ) / 5000) % 100,
 261                       (loops_per_jiffy * HZ));
 262
 263         return 0;
 264 }
 265
 266 static void *c_start(struct seq_file *m, loff_t *pos)
 267 {
 268         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 269 }
 270
 271 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 272 {
 273         ++*pos;
 274         return c_start(m, pos);
 275 }
 276
 277 static void c_stop(struct seq_file *m, void *v)
 278 {
 279 }
 280
 281 struct seq_operations cpuinfo_op = {
 282         .start  = c_start,
 283         .next   = c_next,
 284         .stop   = c_stop,
 285         .show   = show_cpuinfo,
 286 };
 287
 288 void arch_gettod(int *year, int *mon, int *day, int *hour,
 289                  int *min, int *sec)
 290 {
 291         if (mach_gettod)
 292                 mach_gettod(year, mon, day, hour, min, sec);
 293         else
 294                 *year = *mon = *day = *hour = *min = *sec = 0;
 295 }
 296