Subversion Repositories or1k

/*

 *  linux/arch/or32/kernel/setup.c

 *

 * Based on m86k

 */

/*

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

 */

#include <linux/config.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/fs.h>

#include <linux/fb.h>

#include <linux/console.h>

#include <linux/genhd.h>

#include <linux/errno.h>

#include <linux/string.h>

#include <linux/major.h>

#include <asm/irq.h>

#include <asm/machdep.h>

#ifdef CONFIG_BLK_DEV_INITRD

#include <linux/blk.h>

#include <asm/pgtable.h>

#endif

extern void register_console(void (*proc)(const char *));

#ifdef CONFIG_CONSOLE

extern struct consw *conswitchp;

#ifdef CONFIG_FRAMEBUFFER

extern struct consw fb_con;

#endif

#endif

#ifdef CONFIG_BLK_DEV_INITRD

extern unsigned long _initrd_start;

extern unsigned long _initrd_end;

#endif

unsigned long rom_length;

unsigned long memory_start;

unsigned long memory_end;

char command_line[512];

char saved_command_line[512];

char console_device[16];

char console_default[] = "CONSOLE=/dev/ttyS0";

/* setup some dummy routines */

static void dummy_waitbut(void)

{

}

void (*mach_sched_init) (void (*handler)(int, void *, struct pt_regs *)) = NULL;

void (*mach_tick)( void ) = NULL;

/* machine dependent keyboard functions */

int (*mach_keyb_init) (void) = NULL;

int (*mach_kbdrate) (struct kbd_repeat *) = NULL;

void (*mach_kbd_leds) (unsigned int) = NULL;

/* machine dependent irq functions */

void (*mach_init_IRQ) (void) = NULL;

void (*(*mach_default_handler)[]) (int, void *, struct pt_regs *) = NULL;

int (*mach_request_irq) (unsigned int, void (*)(int, void *, struct pt_regs *),

                         unsigned long, const char *, void *);

int (*mach_free_irq) (unsigned int, void *);

void (*mach_enable_irq) (unsigned int) = NULL;

void (*mach_disable_irq) (unsigned int) = NULL;

int (*mach_get_irq_list) (char *) = NULL;

int (*mach_process_int) (int, struct pt_regs *) = NULL;

void (*mach_trap_init) (void);

/* machine dependent timer functions */

unsigned long (*mach_gettimeoffset) (void) = NULL;

void (*mach_gettod) (int*, int*, int*, int*, int*, int*) = NULL;

int (*mach_hwclk) (int, struct hwclk_time*) = NULL;

int (*mach_set_clock_mmss) (unsigned long) = NULL;

void (*mach_mksound)( unsigned int count, unsigned int ticks ) = NULL;

void (*mach_reset)( void ) = NULL;

void (*waitbut)(void) = dummy_waitbut;

void (*mach_debug_init)(void) = NULL;

#ifdef CONFIG_OR32

        #define CPU "OR32"

#endif

/*

 *      Setup the console. There may be a console defined in

 *      the command line arguments, so we look there first. If the

 *      command line arguments don't exist then we default to the

 *      first serial port. If we are going to use a console then

 *      setup its device name and the UART for it.

 */

void setup_console(void)

{

        char *sp, *cp;

        int i;

        extern void rs_console_init(void);

        extern void rs_console_print(const char *b);

#ifdef CONFIG_SERIAL

        extern int rs_console_setup(char *arg);

#endif

        /* Quickly check if any command line arguments for CONSOLE. */

        for (sp = NULL, i = 0; (i < sizeof(command_line)-8); i++) {

                if (command_line[i] == 0)

                        break;

                if (command_line[i] == 'C') {

                        if (!strncmp(&command_line[i], "CONSOLE=", 8)) {

                                sp = &command_line[i + 8];

                                break;

                        }

                }

        }

        /* If no CONSOLE defined then default one */

        if (sp == NULL) {

                strcpy(command_line, console_default);

                sp = command_line + 8;

        }

        /* If console specified then copy it into name buffer */

        for (cp = sp, i = 0; (i < (sizeof(console_device) - 1)); i++) {

                if ((*sp == 0) || (*sp == ' ') || (*sp == ','))

                        break;

                console_device[i] = *sp++;

        }

        console_device[i] = 0;

#ifdef CONFIG_SERIAL

        /* If a serial console then init it */

        if (rs_console_setup(cp)) {

                rs_console_init();

                register_console(rs_console_print);

        }

#endif

}

#if defined( CONFIG_GEN) && defined( CONFIG_OR32 )

#define CAT_ROMARRAY

#endif

void setup_arch(char **cmdline_p,

                unsigned long * memory_start_p, unsigned long * memory_end_p)

{

        extern int _stext, _etext;

        extern int _sdata, _edata;

        extern int _sbss, _ebss, _end;

        extern int _ramstart, _ramend;

#ifdef CAT_ROMARRAY

        extern int __data_rom_start;

        extern int __data_start;

#endif

        memory_start = (unsigned long)&_end;

        memory_end = (unsigned long)&_ramend - 4096; /* <- stack area */

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

        setup_console();

  printk("\nOpenRisc 1000 support (C) www.opencores.org\n");

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

        printk("Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");

#ifdef DEBUG

        printk("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("KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "

                "STACK=0x%06x-0x%06x\n",

                (int) &_ebss, (int) memory_start,

                (int) memory_start, (int) memory_end,

                (int) memory_end, (int) &_ramend);

#endif

        init_task.mm->start_code = (unsigned long) &_stext;

        init_task.mm->end_code = (unsigned long) &_etext;

        init_task.mm->end_data = (unsigned long) &_edata;

        init_task.mm->brk = (unsigned long) &_end;

        ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);

        /* Keep a copy of command line */

        *cmdline_p = &command_line[0];

        memcpy(saved_command_line, command_line, sizeof(saved_command_line));

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

#ifdef DEBUG

        if (strlen(*cmdline_p))

                printk("Command line: '%s'\n", *cmdline_p);

        else

                printk("No Command line passed\n");

#endif

        *memory_start_p = memory_start;

        *memory_end_p = memory_end;

        /*rom_length = (unsigned long)&_flashend - (unsigned long)&_romvec;*/

#ifdef CONFIG_BLK_DEV_INITRD

        initrd_start = (unsigned long)&_initrd_start;

        initrd_end = (unsigned long)&_initrd_end;

#endif

#ifdef CONFIG_CONSOLE

#ifdef CONFIG_FRAMEBUFFER

        conswitchp = &fb_con;

#else

        conswitchp = 0;

#endif

#endif

#ifdef DEBUG

        printk("Done setup_arch\n");

#endif

}

int get_cpuinfo(char * buffer)

{

    char *cpu, *mmu, *fpu;

    u_long clockfreq, clockfactor;

    cpu = CPU;

    mmu = "none";

    fpu = "none";

    clockfactor = 16;

    clockfreq = loops_per_sec*clockfactor;

    return(sprintf(buffer, "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_sec/500000,(loops_per_sec/5000)%100,

                   loops_per_sec));

}

void arch_gettod(int *year, int *mon, int *day, int *hour,

                 int *min, int *sec)

{

        if (mach_gettod)

                mach_gettod(year, mon, day, hour, min, sec);

        else

                *year = *mon = *day = *hour = *min = *sec = 0;

}