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

//

//      smsc37c93x.c

//

//      Init code for SMSC 37C93x super IO controller

//

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

//####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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//

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

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//####ECOSGPLCOPYRIGHTEND####

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

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

//

// Author(s):   jskov

// Contributors:jskov

// Date:        2001-05-30

// Description: Init code for SMSC 37C93x super IO controller

//

//####DESCRIPTIONEND####

//

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

#include <pkgconf/hal.h>

#include CYGBLD_HAL_PLATFORM_H

#include <cyg/hal/hal_arch.h>           // SAVE/RESTORE GP macros

#include <cyg/hal/hal_io.h>             // IO macros

#include <cyg/hal/hal_intr.h>           // interrupt vectors

// From page 137+ in SMSC-37C93x.pdf

#define SMSC_CONFIG              0xb04007e0

#define SMSC_CONFIG_DATA         0xb04007e2

#define SMSC_CONFIG_DEV          0x0700

#define SMSC_CONFIG_POWER        0x2200

#define SMSC_CONFIG_ACTIVATE     0x3000

#define SMSC_CONFIG_ENTER        0x5500

#define SMSC_CONFIG_BASE_HIGH    0x6000

#define SMSC_CONFIG_BASE_LOW     0x6100

#define SMSC_CONFIG_IRQ          0x7000

#define SMSC_CONFIG_EXIT         0xaa00

#define SMSC_CONFIG_MODE         0xf000

#define SMSC_CONFIG_DEV_COM1     0x0400

#define SMSC_CONFIG_DEV_COM2     0x0500

#define SMSC_CONFIG_MODE_HIGH    0x0200

#define SMSC_CONFIG_ACTIVATE_ENABLE 0x0100

#define SMSC_CONFIG_POWER_COM1   0x1000

#define SMSC_CONFIG_POWER_COM2   0x2000

void

cyg_hal_init_superIO(void)

{

    // Note: two writes unlike the 37m81x!

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_ENTER);

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_ENTER);

    // Power ON COM1

    HAL_WRITE_UINT16(SMSC_CONFIG_POWER, SMSC_CONFIG_POWER_COM1);

    // Configure and enable COM1

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_DEV);

    HAL_WRITE_UINT16(SMSC_CONFIG_DATA, SMSC_CONFIG_DEV_COM1);

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_BASE_HIGH);

    HAL_WRITE_UINT16(SMSC_CONFIG_DATA, 0x0300);

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_BASE_LOW);

    HAL_WRITE_UINT16(SMSC_CONFIG_DATA, 0xf800);

    // Select IRQ 4 (see chap 8. Interrupt Controller)

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_IRQ);

    HAL_WRITE_UINT16(SMSC_CONFIG_DATA, 4<<8);

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_MODE);

    HAL_WRITE_UINT16(SMSC_CONFIG_DATA, SMSC_CONFIG_MODE_HIGH);

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_ACTIVATE);

    HAL_WRITE_UINT16(SMSC_CONFIG_DATA, SMSC_CONFIG_ACTIVATE_ENABLE);

    // Exit setup mode

    HAL_WRITE_UINT16(SMSC_CONFIG, SMSC_CONFIG_EXIT);

}

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

// end of smsc37c93x.c