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//==========================================================================
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//
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// wallclock_mpc5xx.cxx
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//
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// mpc5xx RTC module driver.
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//
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//==========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): Bob Koninckx
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// Contributors: Bob Koninckx
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// Date: 2002-01-18
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// Purpose: Wallclock driver for mpc5xx
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//
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//####DESCRIPTIONEND####
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//
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//==========================================================================
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#include <pkgconf/wallclock.h> // Wallclock device config
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#include <cyg/hal/hal_io.h> // IO macros
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#include <cyg/infra/cyg_type.h> // Common type definitions and support
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#include <cyg/io/wallclock.hxx> // The WallClock API
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#include <cyg/io/wallclock/wallclock.inl> // Helpers
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#include <cyg/hal/hal_arch.h> // RTC register definitions
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#include <cyg/infra/diag.h> // For debugging
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//-----------------------------------------------------------------------------
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// Functions required for the hardware-driver API.
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// Returns the number of seconds elapsed since 1970-01-01 00:00:00.
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cyg_uint32
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Cyg_WallClock::get_hw_seconds(void)
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{
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cyg_uint32 now;
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HAL_READ_UINT32(CYGARC_REG_IMM_RTC, now);
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return now;
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}
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#ifndef CYGSEM_WALLCLOCK_SET_GET_MODE
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void
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Cyg_WallClock::init_hw_seconds(void)
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{
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cyg_uint32 key = 0x55ccaa33;
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cyg_uint16 rtcsc;
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// Write zero to the time register
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// and start up the RTC
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HAL_WRITE_UINT32(CYGARC_REG_IMM_RTCK, key);
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HAL_WRITE_UINT32(CYGARC_REG_IMM_RTCSCK, key);
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key = 0;
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HAL_WRITE_UINT32(CYGARC_REG_IMM_RTC, key);
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HAL_READ_UINT16(CYGARC_REG_IMM_RTCSC, rtcsc);
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rtcsc |= 0x0001;
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HAL_WRITE_UINT16(CYGARC_REG_IMM_RTCSC, rtcsc);
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}
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#endif // CYGSEM_WALLCLOCK_SET_GET_MODE
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//-----------------------------------------------------------------------------
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// End of wallclock_mpc5xx.cxx
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