LXR linux/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
  37unsigned long memory_start;
  38unsigned long memory_end;
  39
  40EXPORT_SYMBOL(memory_start);
  41EXPORT_SYMBOL(memory_end);
  42
  43char __initdata command_line[COMMAND_LINE_SIZE];
  44
  45/* machine dependent timer functions */
  46void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
  47int (*mach_set_clock_mmss)(unsigned long);
  48
  49/* machine dependent reboot functions */
  50void (*mach_reset)(void);
  51void (*mach_halt)(void);
  52void (*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
 110extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 111extern int _ramstart, _ramend;
 112
 113void __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, BOOTMEM_DEFAULT);
 207
 208        /*
 209         * Get kmalloc into gear.
 210         */
 211        paging_init();
 212}
 213
 214/*
 215 *      Get CPU information for use by the procfs.
 216 */
 217static 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
 248static void *c_start(struct seq_file *m, loff_t *pos)
 249{
 250        return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 251}
 252
 253static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 254{
 255        ++*pos;
 256        return c_start(m, pos);
 257}
 258
 259static void c_stop(struct seq_file *m, void *v)
 260{
 261}
 262
 263const struct seq_operations cpuinfo_op = {
 264        .start  = c_start,
 265        .next   = c_next,
 266        .stop   = c_stop,
 267        .show   = show_cpuinfo,
 268};
 269
 270