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Diffstat (limited to 'ecos/packages/devs/wallclock/powerpc/mpc5xx/current/src/wallclock_mpc5xx.cxx')
| -rw-r--r-- | ecos/packages/devs/wallclock/powerpc/mpc5xx/current/src/wallclock_mpc5xx.cxx | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/ecos/packages/devs/wallclock/powerpc/mpc5xx/current/src/wallclock_mpc5xx.cxx b/ecos/packages/devs/wallclock/powerpc/mpc5xx/current/src/wallclock_mpc5xx.cxx new file mode 100644 index 0000000..0c57e81 --- /dev/null +++ b/ecos/packages/devs/wallclock/powerpc/mpc5xx/current/src/wallclock_mpc5xx.cxx @@ -0,0 +1,99 @@ +//========================================================================== +// +// 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 |