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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 Free Software Foundation, 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.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY 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.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): nickg
// Contributors: nickg, jlarmour, jskov
// Date: 2000-05-15
// 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/hal_cache.h> // Cache handling
#include <cyg/hal/drv_api.h> // CYG_ISR_HANDLED
#include <cyg/hal/hal_if.h> // Calling interface definitions
#include <cyg/hal/hal_misc.h> // Helper functions
//--------------------------------------------------------------------------
#define CYGARC_REG_SUPERIO_IREG 0xb4000398
#define CYGARC_REG_SUPERIO_DREG 0xb4000399
#define CYGARC_REG_SUPERIO_FER 0x00 // function enable
#define CYGARC_REG_SUPERIO_FAR 0x01 // function address
#define CYGARC_REG_SUPERIO_PTR 0x02 // power and test
#define CYGARC_REG_SUPERIO_CLK 0x51 // clock controller
#define CYGARC_REG_SUPERIO_FER_PAR 0x01
#define CYGARC_REG_SUPERIO_FER_SCC1 0x02
#define CYGARC_REG_SUPERIO_FER_SCC2 0x04
#define CYGARC_REG_SUPERIO_CLK_14M 0x00 // 14MHz source
#define CYGARC_REG_SUPERIO_CLK_CME 0x04 // clock multiplier enabled
#define CYGARC_REG_SUPERIO_PTR_PPEXT 0x80 // extended
static void write_super_io(cyg_uint8 offset, cyg_uint8 data)
{
HAL_WRITE_UINT8(CYGARC_REG_SUPERIO_IREG, offset);
HAL_WRITE_UINT8(CYGARC_REG_SUPERIO_DREG, data);
HAL_WRITE_UINT8(CYGARC_REG_SUPERIO_DREG, data);
}
void hal_platform_init(void)
{
hal_if_init();
// Configure the SuperIO chip
write_super_io(CYGARC_REG_SUPERIO_FER,
CYGARC_REG_SUPERIO_FER_SCC1|CYGARC_REG_SUPERIO_FER_SCC2);
write_super_io(CYGARC_REG_SUPERIO_FAR, 0x10);
write_super_io(CYGARC_REG_SUPERIO_CLK,
CYGARC_REG_SUPERIO_CLK_14M|CYGARC_REG_SUPERIO_CLK_CME);
// Set up VSC320 interrupt controller. INT1 must merge INT2 and
// INT3 according to the platform specification.
HAL_WRITE_UINT32(CYGARC_REG_INT_CFG1,
CYGARC_REG_INT_CFG_INT2|CYGARC_REG_INT_CFG_INT3);
// Unmask vectors which are entry points for interrupt controllers
HAL_INTERRUPT_UNMASK(CYGNUM_HAL_INTERRUPT_V320USC_INT0);
HAL_INTERRUPT_UNMASK(CYGNUM_HAL_INTERRUPT_V320USC_INT1);
HAL_INTERRUPT_UNMASK(CYGNUM_HAL_INTERRUPT_IO);
}
//--------------------------------------------------------------------------
// End of plf_misc.c
|
