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