linux/arch/m68knommu/kernel/setup.c
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   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
  38unsigned long memory_start;
  39unsigned long memory_end;
  40
  41EXPORT_SYMBOL(memory_start);
  42EXPORT_SYMBOL(memory_end);
  43
  44char __initdata command_line[COMMAND_LINE_SIZE];
  45
  46/* machine dependent timer functions */
  47void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
  48int (*mach_set_clock_mmss)(unsigned long);
  49
  50/* machine dependent reboot functions */
  51void (*mach_reset)(void);
  52void (*mach_halt)(void);
  53void (*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
 111extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
 112extern int _ramstart, _ramend;
 113
 114void __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#ifdef DEBUG
 170        printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
 171                "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
 172                (int) &_sdata, (int) &_edata,
 173                (int) &_sbss, (int) &_ebss);
 174        printk(KERN_DEBUG "MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ",
 175                (int) &_ebss, (int) memory_start,
 176                (int) memory_start, (int) memory_end);
 177#endif
 178
 179        /* Keep a copy of command line */
 180        *cmdline_p = &command_line[0];
 181        memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 182        boot_command_line[COMMAND_LINE_SIZE-1] = 0;
 183
 184#ifdef DEBUG
 185        if (strlen(*cmdline_p))
 186                printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
 187#endif
 188
 189#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
 190        conswitchp = &dummy_con;
 191#endif
 192
 193        /*
 194         * Give all the memory to the bootmap allocator, tell it to put the
 195         * boot mem_map at the start of memory.
 196         */
 197        bootmap_size = init_bootmem_node(
 198                        NODE_DATA(0),
 199                        memory_start >> PAGE_SHIFT, /* map goes here */
 200                        PAGE_OFFSET >> PAGE_SHIFT,      /* 0 on coldfire */
 201                        memory_end >> PAGE_SHIFT);
 202        /*
 203         * Free the usable memory, we have to make sure we do not free
 204         * the bootmem bitmap so we then reserve it after freeing it :-)
 205         */
 206        free_bootmem(memory_start, memory_end - memory_start);
 207        reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);
 208
 209        /*
 210         * Get kmalloc into gear.
 211         */
 212        paging_init();
 213}
 214
 215/*
 216 *      Get CPU information for use by the procfs.
 217 */
 218static int show_cpuinfo(struct seq_file *m, void *v)
 219{
 220        char *cpu, *mmu, *fpu;
 221        u_long clockfreq;
 222
 223        cpu = CPU;
 224        mmu = "none";
 225        fpu = "none";
 226
 227#ifdef CONFIG_COLDFIRE
 228        clockfreq = (loops_per_jiffy * HZ) * 3;
 229#else
 230        clockfreq = (loops_per_jiffy * HZ) * 16;
 231#endif
 232
 233        seq_printf(m, "CPU:\t\t%s\n"
 234                      "MMU:\t\t%s\n"
 235                      "FPU:\t\t%s\n"
 236                      "Clocking:\t%lu.%1luMHz\n"
 237                      "BogoMips:\t%lu.%02lu\n"
 238                      "Calibration:\t%lu loops\n",
 239                      cpu, mmu, fpu,
 240                      clockfreq / 1000000,
 241                      (clockfreq / 100000) % 10,
 242                      (loops_per_jiffy * HZ) / 500000,
 243                      ((loops_per_jiffy * HZ) / 5000) % 100,
 244                      (loops_per_jiffy * HZ));
 245
 246        return 0;
 247}
 248
 249static void *c_start(struct seq_file *m, loff_t *pos)
 250{
 251        return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
 252}
 253
 254static void *c_next(struct seq_file *m, void *v, loff_t *pos)
 255{
 256        ++*pos;
 257        return c_start(m, pos);
 258}
 259
 260static void c_stop(struct seq_file *m, void *v)
 261{
 262}
 263
 264const struct seq_operations cpuinfo_op = {
 265        .start  = c_start,
 266        .next   = c_next,
 267        .stop   = c_stop,
 268        .show   = show_cpuinfo,
 269};
 270
 271