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//==========================================================================

//

//      plf_misc.c

//

//      HAL platform miscellaneous functions

//

//==========================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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// You should have received a copy of the GNU General Public License along

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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

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// or inline functions from this file, or you compile this file and link it

// with other works to produce a work based on this file, this file does not

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//####ECOSGPLCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    nickg

// Contributors: nickg, gthomas, jlarmour

// Date:         2000-03-10

// Purpose:      HAL miscellaneous functions

// Description:  This file contains miscellaneous functions provided by the

//               HAL.

//

//####DESCRIPTIONEND####

//

//========================================================================*/

#include <pkgconf/hal.h>

#include <cyg/infra/cyg_type.h>         // Base types

#include <cyg/infra/cyg_trac.h>         // tracing macros

#include <cyg/infra/cyg_ass.h>          // assertion macros

#include <cyg/hal/hal_arch.h>           // architectural definitions

#include <cyg/hal/hal_intr.h>           // Interrupt handling

#include <cyg/hal/v850_common.h>        // Hardware definitions

#include <cyg/hal/hal_if.h>             // ROM monitor interfaces

#include <cyg/infra/diag.h>             // diag_printf

extern void show_hex4(unsigned long val);

extern void show_hex1(unsigned long val);

extern void show_8bit_reg(void *addr);

extern void show_led(int p);

void

cyg_hal_platform_hardware_init(void)

{

    hal_if_init();  // Initialize GDB[ROM]/eCos interfaces

    show_led(' ');

    show_led(' ');

}

void

show_hex4(unsigned long val)

{

    show_hex1(val>>24);

    show_hex1(val>>16);

    show_hex1(val>>8);

    show_hex1(val);

}

void

show_hex1(unsigned long val)

{

    static char *hex = "0123456789ABCDEF";

    show_led(hex[(val & 0xF0) >> 4]);

    show_led(hex[val & 0x0F]);

}

void

show_8bit_reg(void *addr)

{

    unsigned char *reg = (unsigned char *)addr;

    unsigned char val = *reg;

    show_led(' ');

    show_hex4((unsigned long)reg);

    show_led('=');

    show_hex1((unsigned long)val);

    show_led('/');

}

#define SEG_0 0x00

#define SEG_A 0x01

#define SEG_B 0x02

#define SEG_C 0x04

#define SEG_D 0x08

#define SEG_E 0x10

#define SEG_F 0x20

#define SEG_G 0x40

#define SEG_H 0x80

#define LED(a,b,c,d,e,f,g,h) SEG_##a|SEG_##b|SEG_##c|SEG_##d|SEG_##e|SEG_##f|SEG_##g|SEG_##h

static unsigned char led_bits[] = {

    LED(H,0,0,0,0,0,0,0), // 0x20

        0x30, // 0x21 !

        0x00, // 0x22 @

        0x00, // 0x23

        0x00, // 0x24

        0x00, // 0x25

        0x00, // 0x26

        0x00, // 0x27

        0x00, // 0x28

        0x00, // 0x29

        0x00, // 0x2A

        0x00, // 0x2B

        0x00, // 0x2C

        0x00, // 0x2D

        0x00, // 0x2E

        LED(E,G,B,0,0,0,0,0), // 0x2F

        LED(A,B,C,D,E,F,0,0), // 0x30

        LED(0,B,C,0,0,0,0,0), // 0x31

        LED(A,B,G,E,D,0,0,0), // 0x32

        LED(A,B,G,C,D,0,0,0), // 0x33

        LED(F,G,B,C,0,0,0,0), // 0x34

        LED(A,F,G,C,D,0,0,0), // 0x35

        LED(A,F,G,C,D,E,0,0), // 0x36

        LED(A,B,C,0,0,0,0,0), // 0x37

        LED(A,B,C,D,E,F,G,0), // 0x38

        LED(A,F,G,B,C,0,0,0), // 0x39

        LED(0,0,0,0,0,0,0,0), // 0x3A

        LED(0,0,0,0,0,0,0,0), // 0x3B

        LED(0,0,0,0,0,0,0,0), // 0x3C

        LED(D,G,0,0,0,0,0,0), // 0x3D - =

        LED(0,0,0,0,0,0,0,0), // 0x3E

        LED(0,0,0,0,0,0,0,0), // 0x3F

        LED(0,0,0,0,0,0,0,0), // 0x40

        LED(A,F,G,B,E,C,0,0), // 0x41 - A

        LED(F,G,E,D,C,0,0,0), // 0x42 - B

        LED(A,F,E,D,0,0,0,0), // 0x43 - C

        LED(B,G,E,D,C,0,0,0), // 0x44 - D

        LED(A,F,G,E,D,0,0,0), // 0x45 - E

        LED(A,F,G,E,0,0,0,0), // 0x46 - F

        LED(0,0,0,0,0,0,0,0), // 0x47

        LED(0,0,0,0,0,0,0,0), // 0x48

        LED(0,0,0,0,0,0,0,0), // 0x49

        LED(0,0,0,0,0,0,0,0), // 0x4A

        LED(0,0,0,0,0,0,0,0), // 0x4B

        LED(0,0,0,0,0,0,0,0), // 0x4C

        LED(0,0,0,0,0,0,0,0), // 0x4D

        LED(0,0,0,0,0,0,0,0), // 0x4E

        LED(0,0,0,0,0,0,0,0), // 0x4F

        LED(0,0,0,0,0,0,0,0), // 0x50

        LED(0,0,0,0,0,0,0,0), // 0x51

        LED(0,0,0,0,0,0,0,0), // 0x52

        LED(0,0,0,0,0,0,0,0), // 0x53

        LED(0,0,0,0,0,0,0,0), // 0x54

        LED(0,0,0,0,0,0,0,0), // 0x55

        LED(0,0,0,0,0,0,0,0), // 0x56

        LED(0,0,0,0,0,0,0,0), // 0x57

        LED(0,0,0,0,0,0,0,0), // 0x58

        LED(0,0,0,0,0,0,0,0), // 0x59

        LED(0,0,0,0,0,0,0,0), // 0x5A

        LED(0,0,0,0,0,0,0,0), // 0x5B

        LED(0,0,0,0,0,0,0,0), // 0x5C

        LED(0,0,0,0,0,0,0,0), // 0x5D

        LED(0,0,0,0,0,0,0,0), // 0x5E

        LED(0,0,0,0,0,0,0,0), // 0x5F

        LED(0,0,0,0,0,0,0,0), // 0x60

        LED(0,0,0,0,0,0,0,0), // 0x61

        LED(0,0,0,0,0,0,0,0), // 0x62

        LED(0,0,0,0,0,0,0,0), // 0x63

        LED(0,0,0,0,0,0,0,0), // 0x64

        LED(0,0,0,0,0,0,0,0), // 0x65

        LED(0,0,0,0,0,0,0,0), // 0x66

        LED(0,0,0,0,0,0,0,0), // 0x67

        LED(0,0,0,0,0,0,0,0), // 0x68

        LED(0,0,0,0,0,0,0,0), // 0x69

        LED(0,0,0,0,0,0,0,0), // 0x6A

        LED(0,0,0,0,0,0,0,0), // 0x6B

        LED(0,0,0,0,0,0,0,0), // 0x6C

        LED(0,0,0,0,0,0,0,0), // 0x6D

        LED(0,0,0,0,0,0,0,0), // 0x6E

        LED(0,0,0,0,0,0,0,0), // 0x6F

        LED(0,0,0,0,0,0,0,0), // 0x70

        LED(0,0,0,0,0,0,0,0), // 0x71

        LED(0,0,0,0,0,0,0,0), // 0x72

        LED(0,0,0,0,0,0,0,0), // 0x73

        LED(0,0,0,0,0,0,0,0), // 0x74

        LED(0,0,0,0,0,0,0,0), // 0x75

        LED(0,0,0,0,0,0,0,0), // 0x76

        LED(0,0,0,0,0,0,0,0), // 0x77

        LED(0,0,0,0,0,0,0,0), // 0x78

        LED(0,0,0,0,0,0,0,0), // 0x79

        LED(0,0,0,0,0,0,0,0), // 0x7A

        LED(0,0,0,0,0,0,0,0), // 0x7B

        LED(0,0,0,0,0,0,0,0), // 0x7C

        LED(0,0,0,0,0,0,0,0), // 0x7D

        LED(A,0,0,0,0,0,0,0), // 0x7E - ~

        LED(0,0,0,0,0,0,0,0), // 0x7F

};

#define DELAY 10000

void

show_led(int p)

{

    volatile unsigned char *led = (volatile unsigned char *)0xFFFFF014;

    int j;

    for (j = 0;  j < DELAY;  j++) {

        *led = led_bits[p-0x20];

    }

    for (j = 0;  j < DELAY*3;  j++) {

        *led = 0;

    }

}

void

FAIL(char *m)

{

    static char *fail_reason;

    fail_reason = m;

#if 0

    while (1) {

        show_led('~');

        show_hex4(m);

        show_led('/');

    }

#else

    diag_printf("FAIL: %s\n", m);

#endif

}

void

ALERT(char *m)

{

    static char *alert_reason;

    alert_reason = m;

#if 0

    show_led('~');

    show_led('~');

    show_hex4(m);

    show_led('/');

#else

    diag_printf("ALERT: %s\n", m);

#endif

}

//

// Clock support, using 16 bit timer TM1

//

CYG_WORD32 cyg_hal_clock_period;

void

hal_clock_initialize(cyg_int32 period)

{

    volatile unsigned char *tmc = (volatile unsigned char *)V850_REG_TMC1;

    volatile unsigned char *crc = (volatile unsigned char *)V850_REG_CRC1;

    volatile unsigned char *prm = (volatile unsigned char *)V850_REG_PRM10;

    volatile unsigned short *cmp0 = (volatile unsigned short *)V850_REG_CR10;

    volatile unsigned short *cmp1 = (volatile unsigned short *)V850_REG_CR11;

    *tmc = 0x00;  // Halt timer

    *crc = 0x00;  // Select simple compare mode

    *prm = 0x01;  // System clock / 4

    *cmp0 = period;

    *cmp1 = period;

    *tmc = 0x0C;  // Continuous, reset mode (interval timer)

    cyg_hal_clock_period = period;

}

void

hal_clock_reset(int vector, cyg_uint32 period)

{

    hal_clock_initialize(period);

}

//

// Return the number of clock "ticks" since last interrupt

//

cyg_uint32 hal_clock_read(void)

{

    volatile unsigned short *timer = (volatile unsigned short *)V850_REG_TM1;

    return (cyg_uint32)*timer;

}

extern void _hal_thread_load_context(HAL_SavedRegisters **to)

     CYGBLD_ATTRIB_NORET;

extern void _hal_thread_switch_context(HAL_SavedRegisters **to, HAL_SavedRegisters **from);

void hal_thread_load_context(CYG_ADDRESS to)

{

    HAL_SavedRegisters **new_context = (HAL_SavedRegisters **)to;

#if 0

    diag_printf("Load context: %x\n", *new_context);

    show_regs(*new_context);

#endif

    _hal_thread_load_context(new_context);

}

void hal_thread_switch_context(CYG_ADDRESS to, CYG_ADDRESS from)

{

    HAL_SavedRegisters **old_context = (HAL_SavedRegisters **)from;

    HAL_SavedRegisters **new_context = (HAL_SavedRegisters **)to;

#if 0

    diag_printf("Switch context - old: %x, new: %x\n", *old_context, *new_context);

    show_regs(*new_context);

#endif

    _hal_thread_switch_context(new_context, old_context);

}