smsc37m81x.c

来自「eCos操作系统源码」· C语言 代码 · 共 131 行

//=============================================================================
//
//      smsc37m81x.c
//
//      Init code for SMSC 37m81x 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.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// 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
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   jskov
// Contributors:jskov
// Date:        2001-04-02
// Description: Init code for SMSC 37m81x 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-37m81x.pdf
#define SMSC_CONFIG             0xb80003f0
#define SMSC_CONFIG_DATA        0xb80003f1

#define SMSC_CONFIG_DEV         0x07
#define SMSC_CONFIG_ACTIVATE    0x30
#define SMSC_CONFIG_ENTER       0x55
#define SMSC_CONFIG_BASE_HIGH   0x60
#define SMSC_CONFIG_BASE_LOW    0x61
#define SMSC_CONFIG_IRQ         0x70
#define SMSC_CONFIG_EXIT        0xaa
#define SMSC_CONFIG_MODE        0xf0

#define SMSC_CONFIG_DEV_COM1    0x04
#define SMSC_CONFIG_DEV_COM2    0x05

#define SMSC_CONFIG_MODE_HIGH   0x02

#define SMSC_CONFIG_ACTIVATE_ENABLE 0x01


void
cyg_hal_init_superIO(void)
{
    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_ENTER);

    // Configure and enable COM1
    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_DEV);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, SMSC_CONFIG_DEV_COM1);

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_BASE_HIGH);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, 0x03);
    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_BASE_LOW);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, 0xf8);

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_IRQ);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA,
                    (CYGNUM_HAL_INTERRUPT_TTY0-CYGNUM_HAL_INTERRUPT_EXTERNAL_BASE));

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_MODE);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, SMSC_CONFIG_MODE_HIGH);

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_ACTIVATE);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, SMSC_CONFIG_ACTIVATE_ENABLE);

    // Configure and enable COM2
    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_DEV);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, SMSC_CONFIG_DEV_COM2);

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_BASE_HIGH);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, 0x02);
    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_BASE_LOW);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, 0xf8);

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_IRQ);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA,
                    (CYGNUM_HAL_INTERRUPT_TTY1-CYGNUM_HAL_INTERRUPT_EXTERNAL_BASE));

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_MODE);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, SMSC_CONFIG_MODE_HIGH);

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_ACTIVATE);
    HAL_WRITE_UINT8(SMSC_CONFIG_DATA, SMSC_CONFIG_ACTIVATE_ENABLE);

    HAL_WRITE_UINT8(SMSC_CONFIG, SMSC_CONFIG_EXIT);

}

//-----------------------------------------------------------------------------
// end of smsc37m81x.c