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_M68360
  68         #define CPU "MC68360"
  69 #endif
  70 #if defined(CONFIG_M5206)
  71         #define CPU "COLDFIRE(m5206)"
  72 #endif
  73 #if defined(CONFIG_M5206e)
  74         #define CPU "COLDFIRE(m5206e)"
  75 #endif
  76 #if defined(CONFIG_M520x)
  77         #define CPU "COLDFIRE(m520x)"
  78 #endif
  79 #if defined(CONFIG_M523x)
  80         #define CPU "COLDFIRE(m523x)"
  81 #endif
  82 #if defined(CONFIG_M5249)
  83         #define CPU "COLDFIRE(m5249)"
  84 #endif
  85 #if defined(CONFIG_M5271)
  86         #define CPU "COLDFIRE(m5270/5271)"
  87 #endif
  88 #if defined(CONFIG_M5272)
  89         #define CPU "COLDFIRE(m5272)"
  90 #endif
  91 #if defined(CONFIG_M5275)
  92         #define CPU "COLDFIRE(m5274/5275)"
  93 #endif
  94 #if defined(CONFIG_M528x)
  95         #define CPU "COLDFIRE(m5280/5282)"
  96 #endif
  97 #if defined(CONFIG_M5307)
  98         #define CPU "COLDFIRE(m5307)"
  99 #endif
 100 #if defined(CONFIG_M532x)
 101         #define CPU "COLDFIRE(m532x)"
 102 #endif
 103 #if defined(CONFIG_M5407)
 104         #define CPU "COLDFIRE(m5407)"
 105 #endif
 106 #ifndef CPU
 107         #define CPU "UNKNOWN"
 108 #endif
 109
 110 extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 111 extern int _ramstart, _ramend;
 112
 113 void __init setup_arch(char **cmdline_p)
 114 {
 115         int bootmap_size;
 116
 117         memory_start = PAGE_ALIGN(_ramstart);
 118         memory_end = _ramend;
 119
 120         init_mm.start_code = (unsigned long) &_stext;
 121         init_mm.end_code = (unsigned long) &_etext;
 122         init_mm.end_data = (unsigned long) &_edata;
 123         init_mm.brk = (unsigned long) 0;
 124
 125         config_BSP(&command_line[0], sizeof(command_line));
 126
 127 #if defined(CONFIG_BOOTPARAM)
 128         strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
 129         command_line[sizeof(command_line) - 1] = 0;
 130 #endif
 131
 132         printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
 133
 134 #ifdef CONFIG_UCDIMM
 135         printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
 136 #endif
 137 #ifdef CONFIG_M68VZ328
 138         printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
 139 #endif
 140 #ifdef CONFIG_COLDFIRE
 141         printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
 142 #ifdef CONFIG_M5307
 143         printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
 144 #endif
 145 #ifdef CONFIG_ELITE
 146         printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
 147 #endif
 148 #endif
 149         printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
 150
 151 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
 152         printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
 153 #endif
 154 #if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
 155         printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
 156 #endif
 157 #if defined (CONFIG_M68360)
 158         printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
 159         printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
 160 #endif
 161 #ifdef CONFIG_DRAGEN2
 162         printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
 163 #endif
 164 #ifdef CONFIG_M5235EVB
 165         printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
 166 #endif
 167
 168 #ifdef DEBUG
 169         printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 170                 "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 171                 (int) &_sdata, (int) &_edata,
 172                 (int) &_sbss, (int) &_ebss);
 173         printk(KERN_DEBUG "MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ",
 174                 (int) &_ebss, (int) memory_start,
 175                 (int) memory_start, (int) memory_end);
 176 #endif
 177
 178         /* Keep a copy of command line */
 179         *cmdline_p = &command_line[0];
 180         memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 181         boot_command_line[COMMAND_LINE_SIZE-1] = 0;
 182
 183 #ifdef DEBUG
 184         if (strlen(*cmdline_p))
 185                 printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 186 #endif
 187
 188 #if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 189         conswitchp = &dummy_con;
 190 #endif
 191
 192         /*
 193          * Give all the memory to the bootmap allocator, tell it to put the
 194          * boot mem_map at the start of memory.
 195          */
 196         bootmap_size = init_bootmem_node(
 197                         NODE_DATA(0),
 198                         memory_start >> PAGE_SHIFT, /* map goes here */
 199                         PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 200                         memory_end >> PAGE_SHIFT);
 201         /*
 202          * Free the usable memory, we have to make sure we do not free
 203          * the bootmem bitmap so we then reserve it after freeing it :-)
 204          */
 205         free_bootmem(memory_start, memory_end - memory_start);
 206         reserve_bootmem(memory_start, bootmap_size);
 207
 208         /*
 209          * Get kmalloc into gear.
 210          */
 211         paging_init();
 212 }
 213
 214 /*
 215  *      Get CPU information for use by the procfs.
 216  */
 217 static int show_cpuinfo(struct seq_file *m, void *v)
 218 {
 219         char *cpu, *mmu, *fpu;
 220         u_long clockfreq;
 221
 222         cpu = CPU;
 223         mmu = "none";
 224         fpu = "none";
 225
 226 #ifdef CONFIG_COLDFIRE
 227         clockfreq = (loops_per_jiffy * HZ) * 3;
 228 #else
 229         clockfreq = (loops_per_jiffy * HZ) * 16;
 230 #endif
 231
 232         seq_printf(m, "CPU:\t\t%s\n"
 233                       "MMU:\t\t%s\n"
 234                       "FPU:\t\t%s\n"
 235                       "Clocking:\t%lu.%1luMHz\n"
 236                       "BogoMips:\t%lu.%02lu\n"
 237                       "Calibration:\t%lu loops\n",
 238                       cpu, mmu, fpu,
 239                       clockfreq / 1000000,
 240                       (clockfreq / 100000) % 10,
 241                       (loops_per_jiffy * HZ) / 500000,
 242                       ((loops_per_jiffy * HZ) / 5000) % 100,
 243                       (loops_per_jiffy * HZ));
 244
 245         return 0;
 246 }
 247
 248 static void *c_start(struct seq_file *m, loff_t *pos)
 249 {
 250         return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 251 }
 252
 253 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 254 {
 255         ++*pos;
 256         return c_start(m, pos);
 257 }
 258
 259 static void c_stop(struct seq_file *m, void *v)
 260 {
 261 }
 262
 263 struct seq_operations cpuinfo_op = {
 264         .start  = c_start,
 265         .next   = c_next,
 266         .stop   = c_stop,
 267         .show   = show_cpuinfo,
 268 };
 269