Subversion Repositories ao68000

/*

 *  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 <linux/initrd.h>

#include <linux/root_dev.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

#if defined(CONFIG_AO68000)

        #define CPU "AO68000"

#endif

#ifndef CPU

        #define CPU "UNKNOWN"

#endif

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

extern int _ramstart, _ramend;

#if defined(CONFIG_UBOOT)

/*

 * parse_uboot_commandline

 *

 * Copies u-boot commandline arguments and store them in the proper linux

 * variables.

 *

 * Assumes:

 *      _init_sp global contains the address in the stack pointer when the

 *      kernel starts (see head.S::_start)

 *

 *      U-Boot calling convention:

 *      (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);

 *

 *      _init_sp can be parsed as such

 *

 *      _init_sp+00 = u-boot cmd after jsr into kernel (skip)

 *      _init_sp+04 = &kernel board_info (residual data)

 *      _init_sp+08 = &initrd_start

 *      _init_sp+12 = &initrd_end

 *      _init_sp+16 = &cmd_start

 *      _init_sp+20 = &cmd_end

 *

 *      This also assumes that the memory locations pointed to are still

 *      unmodified. U-boot places them near the end of external SDRAM.

 *

 * Argument(s):

 *      commandp = the linux commandline arg container to fill.

 *      size     = the sizeof commandp.

 *

 * Returns:

 */

void parse_uboot_commandline(char *commandp, int size)

{

        extern unsigned long _init_sp;

        unsigned long *sp;

        unsigned long uboot_kbd;

        unsigned long uboot_initrd_start, uboot_initrd_end;

        unsigned long uboot_cmd_start, uboot_cmd_end;

        sp = (unsigned long *)_init_sp;

        uboot_kbd = sp[1];

        uboot_initrd_start = sp[2];

        uboot_initrd_end = sp[3];

        uboot_cmd_start = sp[4];

        uboot_cmd_end = sp[5];

        if (uboot_cmd_start && uboot_cmd_end)

                strncpy(commandp, (const char *)uboot_cmd_start, size);

#if defined(CONFIG_BLK_DEV_INITRD)

        if (uboot_initrd_start && uboot_initrd_end &&

                (uboot_initrd_end > uboot_initrd_start)) {

                initrd_start = uboot_initrd_start;

                initrd_end = uboot_initrd_end;

                ROOT_DEV = Root_RAM0;

                printk(KERN_INFO "initrd at 0x%lx:0x%lx\n",

                        initrd_start, initrd_end);

        }

#endif /* if defined(CONFIG_BLK_DEV_INITRD) */

}

#endif /* #if defined(CONFIG_UBOOT) */

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 /* CONFIG_BOOTPARAM */

#if defined(CONFIG_UBOOT)

        /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */

        #if defined(CONFIG_BOOTPARAM)

                /* Add the whitespace separator */

                command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' ';

                /* Parse uboot command line into the rest of the buffer */

                parse_uboot_commandline(

                        &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)],

                        (sizeof(command_line) -

                        (strlen(CONFIG_BOOTPARAM_STRING)+1)));

        /* Only CONFIG_UBOOT defined, create cmdline */

        #else

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

        #endif /* CONFIG_BOOTPARAM */

        command_line[sizeof(command_line) - 1] = 0;

#endif /* CONFIG_UBOOT */

        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

        pr_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);

        pr_debug("MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ",

                 (int) &_ebss, (int) memory_start,

                 (int) memory_start, (int) memory_end);

        /* 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);

#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD)

        if ((initrd_start > 0) && (initrd_start < initrd_end) &&

                        (initrd_end < memory_end))

                reserve_bootmem(initrd_start, initrd_end - initrd_start,

                                 BOOTMEM_DEFAULT);

#endif /* if defined(CONFIG_BLK_DEV_INITRD) */

        /*

         * 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,

};