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setup.c

/*
 *  linux/arch/m68knommu/kernel/setup.c
 *
 *  Copyright (C) 1999-2007  Greg Ungerer (gerg@snapgear.com)
 *  Copyright (C) 1998,1999  D. Jeff Dionne <jeff@uClinux.org>
 *  Copyleft  ()) 2000       James D. Schettine {james@telos-systems.com}
 *  Copyright (C) 1998       Kenneth Albanowski <kjahds@kjahds.com>
 *  Copyright (C) 1995       Hamish Macdonald
 *  Copyright (C) 2000       Lineo Inc. (www.lineo.com)
 *  Copyright (C) 2001       Lineo, Inc. <www.lineo.com>
 *
 *  68VZ328 Fixes/support    Evan Stawnyczy <e@lineo.ca>
 */

/*
 * This file handles the architecture-dependent parts of system setup
 */

#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/console.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/init.h>

#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#include <asm/pgtable.h>

unsigned long memory_start;
unsigned long memory_end;

EXPORT_SYMBOL(memory_start);
EXPORT_SYMBOL(memory_end);

char __initdata command_line[COMMAND_LINE_SIZE];

/* machine dependent timer functions */
void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
int (*mach_set_clock_mmss)(unsigned long);

/* machine dependent reboot functions */
void (*mach_reset)(void);
void (*mach_halt)(void);
void (*mach_power_off)(void);


#ifdef CONFIG_M68000
      #define CPU "MC68000"
#endif
#ifdef CONFIG_M68328
      #define CPU "MC68328"
#endif
#ifdef CONFIG_M68EZ328
      #define CPU "MC68EZ328"
#endif
#ifdef CONFIG_M68VZ328
      #define CPU "MC68VZ328"
#endif
#ifdef CONFIG_M68360
      #define CPU "MC68360"
#endif
#if defined(CONFIG_M5206)
      #define     CPU "COLDFIRE(m5206)"
#endif
#if defined(CONFIG_M5206e)
      #define     CPU "COLDFIRE(m5206e)"
#endif
#if defined(CONFIG_M520x)
      #define CPU "COLDFIRE(m520x)"
#endif
#if defined(CONFIG_M523x)
      #define CPU "COLDFIRE(m523x)"
#endif
#if defined(CONFIG_M5249)
      #define CPU "COLDFIRE(m5249)"
#endif
#if defined(CONFIG_M5271)
      #define CPU "COLDFIRE(m5270/5271)"
#endif
#if defined(CONFIG_M5272)
      #define CPU "COLDFIRE(m5272)"
#endif
#if defined(CONFIG_M5275)
      #define CPU "COLDFIRE(m5274/5275)"
#endif
#if defined(CONFIG_M528x)
      #define CPU "COLDFIRE(m5280/5282)"
#endif
#if defined(CONFIG_M5307)
      #define     CPU "COLDFIRE(m5307)"
#endif
#if defined(CONFIG_M532x)
      #define     CPU "COLDFIRE(m532x)"
#endif
#if defined(CONFIG_M5407)
      #define     CPU "COLDFIRE(m5407)"
#endif
#ifndef CPU
      #define     CPU "UNKNOWN"
#endif

extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
extern int _ramstart, _ramend;

void __init setup_arch(char **cmdline_p)
{
      int bootmap_size;

      memory_start = PAGE_ALIGN(_ramstart);
      memory_end = _ramend;

      init_mm.start_code = (unsigned long) &_stext;
      init_mm.end_code = (unsigned long) &_etext;
      init_mm.end_data = (unsigned long) &_edata;
      init_mm.brk = (unsigned long) 0;

      config_BSP(&command_line[0], sizeof(command_line));

#if defined(CONFIG_BOOTPARAM)
      strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line));
      command_line[sizeof(command_line) - 1] = 0;
#endif

      printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");

#ifdef CONFIG_UCDIMM
      printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
#endif
#ifdef CONFIG_M68VZ328
      printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
#endif
#ifdef CONFIG_COLDFIRE
      printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
#ifdef CONFIG_M5307
      printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
#endif
#ifdef CONFIG_ELITE
      printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
#endif
#endif
      printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");

#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
      printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
#endif
#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
      printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
#endif
#if defined (CONFIG_M68360)
      printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
      printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
#endif
#ifdef CONFIG_DRAGEN2
      printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
#endif
#ifdef CONFIG_M5235EVB
      printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n");
#endif

#ifdef DEBUG
      printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
            "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
            (int) &_sdata, (int) &_edata,
            (int) &_sbss, (int) &_ebss);
      printk(KERN_DEBUG "MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ",
            (int) &_ebss, (int) memory_start,
            (int) memory_start, (int) memory_end);
#endif

      /* Keep a copy of command line */
      *cmdline_p = &command_line[0];
      memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
      boot_command_line[COMMAND_LINE_SIZE-1] = 0;

#ifdef DEBUG
      if (strlen(*cmdline_p))
            printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
#endif

#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
      conswitchp = &dummy_con;
#endif

      /*
       * Give all the memory to the bootmap allocator, tell it to put the
       * boot mem_map at the start of memory.
       */
      bootmap_size = init_bootmem_node(
                  NODE_DATA(0),
                  memory_start >> PAGE_SHIFT, /* map goes here */
                  PAGE_OFFSET >> PAGE_SHIFT,    /* 0 on coldfire */
                  memory_end >> PAGE_SHIFT);
      /*
       * Free the usable memory, we have to make sure we do not free
       * the bootmem bitmap so we then reserve it after freeing it :-)
       */
      free_bootmem(memory_start, memory_end - memory_start);
      reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT);

      /*
       * Get kmalloc into gear.
       */
      paging_init();
}

/*
 *    Get CPU information for use by the procfs.
 */
static int show_cpuinfo(struct seq_file *m, void *v)
{
      char *cpu, *mmu, *fpu;
      u_long clockfreq;

      cpu = CPU;
      mmu = "none";
      fpu = "none";

#ifdef CONFIG_COLDFIRE
      clockfreq = (loops_per_jiffy * HZ) * 3;
#else
      clockfreq = (loops_per_jiffy * HZ) * 16;
#endif

      seq_printf(m, "CPU:\t\t%s\n"
                  "MMU:\t\t%s\n"
                  "FPU:\t\t%s\n"
                  "Clocking:\t%lu.%1luMHz\n"
                  "BogoMips:\t%lu.%02lu\n"
                  "Calibration:\t%lu loops\n",
                  cpu, mmu, fpu,
                  clockfreq / 1000000,
                  (clockfreq / 100000) % 10,
                  (loops_per_jiffy * HZ) / 500000,
                  ((loops_per_jiffy * HZ) / 5000) % 100,
                  (loops_per_jiffy * HZ));

      return 0;
}

static void *c_start(struct seq_file *m, loff_t *pos)
{
      return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
}

static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
      ++*pos;
      return c_start(m, pos);
}

static void c_stop(struct seq_file *m, void *v)
{
}

const struct seq_operations cpuinfo_op = {
      .start      = c_start,
      .next = c_next,
      .stop = c_stop,
      .show = show_cpuinfo,
};


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