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