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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [devs/] [wallclock/] [powerpc/] [mpc5xx/] [current/] [src/] [wallclock_mpc5xx.cxx] - Rev 786
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//========================================================================== // // wallclock_mpc5xx.cxx // // mpc5xx RTC module driver. // //========================================================================== // ####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): Bob Koninckx // Contributors: Bob Koninckx // Date: 2002-01-18 // Purpose: Wallclock driver for mpc5xx // //####DESCRIPTIONEND#### // //========================================================================== #include <pkgconf/wallclock.h> // Wallclock device config #include <cyg/hal/hal_io.h> // IO macros #include <cyg/infra/cyg_type.h> // Common type definitions and support #include <cyg/io/wallclock.hxx> // The WallClock API #include <cyg/io/wallclock/wallclock.inl> // Helpers #include <cyg/hal/hal_arch.h> // RTC register definitions #include <cyg/infra/diag.h> // For debugging //----------------------------------------------------------------------------- // Functions required for the hardware-driver API. // Returns the number of seconds elapsed since 1970-01-01 00:00:00. cyg_uint32 Cyg_WallClock::get_hw_seconds(void) { cyg_uint32 now; HAL_READ_UINT32(CYGARC_REG_IMM_RTC, now); return now; } #ifndef CYGSEM_WALLCLOCK_SET_GET_MODE void Cyg_WallClock::init_hw_seconds(void) { cyg_uint32 key = 0x55ccaa33; cyg_uint16 rtcsc; // Write zero to the time register // and start up the RTC HAL_WRITE_UINT32(CYGARC_REG_IMM_RTCK, key); HAL_WRITE_UINT32(CYGARC_REG_IMM_RTCSCK, key); key = 0; HAL_WRITE_UINT32(CYGARC_REG_IMM_RTC, key); HAL_READ_UINT16(CYGARC_REG_IMM_RTCSC, rtcsc); rtcsc |= 0x0001; HAL_WRITE_UINT16(CYGARC_REG_IMM_RTCSC, rtcsc); } #endif // CYGSEM_WALLCLOCK_SET_GET_MODE //----------------------------------------------------------------------------- // End of wallclock_mpc5xx.cxx