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Diffstat (limited to 'ecos/packages/devs/watchdog/arm/ebsa285')
3 files changed, 284 insertions, 0 deletions
diff --git a/ecos/packages/devs/watchdog/arm/ebsa285/current/ChangeLog b/ecos/packages/devs/watchdog/arm/ebsa285/current/ChangeLog new file mode 100644 index 0000000..ae4179a --- /dev/null +++ b/ecos/packages/devs/watchdog/arm/ebsa285/current/ChangeLog @@ -0,0 +1,33 @@ +2000-05-31 Jesper Skov <jskov@redhat.com> + + * cdl/watchdog_ebsa285.cdl: + * src/watchdog_ebsa285.cxx: + Driver moved to devs/watchdog/arm/ebsa285. Stripped out + unrelated ChangeLog entries. + +1999-08-27 Jesper Skov <jskov@cygnus.co.uk> + + * src/ebsa285.cxx: + Added watchdog device for 21285. + +// ####GPLCOPYRIGHTBEGIN#### +// ------------------------------------------- +// This file is part of eCos, the Embedded Configurable Operating System. +// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. +// +// This program 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. +// +// This program 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 this program; if not, write to the +// Free Software Foundation, Inc., 51 Franklin Street, +// Fifth Floor, Boston, MA 02110-1301, USA. +// ------------------------------------------- +// ####GPLCOPYRIGHTEND#### diff --git a/ecos/packages/devs/watchdog/arm/ebsa285/current/cdl/watchdog_ebsa285.cdl b/ecos/packages/devs/watchdog/arm/ebsa285/current/cdl/watchdog_ebsa285.cdl new file mode 100644 index 0000000..632e48f --- /dev/null +++ b/ecos/packages/devs/watchdog/arm/ebsa285/current/cdl/watchdog_ebsa285.cdl @@ -0,0 +1,101 @@ +# ==================================================================== +# +# watchdog_ebsa285.cdl +# +# eCos watchdog for ARM/EBSA285 driver configuration data +# +# ==================================================================== +## ####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): jskov +# Contributors: jskov +# Date: 2000-05-31 +# +#####DESCRIPTIONEND#### +# +# ==================================================================== + +cdl_package CYGPKG_DEVICES_WATCHDOG_ARM_EBSA285 { + parent CYGPKG_IO_WATCHDOG + active_if CYGPKG_IO_WATCHDOG + display "EBSA285 watchdog driver" + requires CYGPKG_HAL_ARM_EBSA285 + requires CYGPKG_KERNEL + hardware + compile watchdog_ebsa285.cxx + implements CYGINT_WATCHDOG_HW_IMPLEMENTATIONS + implements CYGINT_WATCHDOG_RESETS_ON_TIMEOUT + active_if CYGIMP_WATCHDOG_HARDWARE + + cdl_option CYGIMP_WATCHDOG_HARDWARE { + parent CYGPKG_IO_WATCHDOG_IMPLEMENTATION + display "Hardware watchdog" + default_value 1 + implements CYGINT_WATCHDOG_IMPLEMENTATIONS + } + + cdl_component CYGPKG_DEVICES_WATCHDOG_ARM_EBSA285_OPTIONS { + display "EBSA285 watchdog build options" + flavor none + description " + Package specific build options including control over + compiler flags used only in building this package, + and details of which tests are built." + + + cdl_option CYGPKG_DEVICES_WATCHDOG_ARM_EBSA285_CFLAGS_ADD { + display "Additional compiler flags" + flavor data + no_define + default_value { "" } + description " + This option modifies the set of compiler flags for + building the watchdog device. These flags are used in addition + to the set of global flags." + } + + cdl_option CYGPKG_DEVICES_WATCHDOG_ARM_EBSA285_CFLAGS_REMOVE { + display "Suppressed compiler flags" + flavor data + no_define + default_value { "" } + description " + This option modifies the set of compiler flags for + building the watchdog device. These flags are removed from + the set of global flags if present." + } + + } +} diff --git a/ecos/packages/devs/watchdog/arm/ebsa285/current/src/watchdog_ebsa285.cxx b/ecos/packages/devs/watchdog/arm/ebsa285/current/src/watchdog_ebsa285.cxx new file mode 100644 index 0000000..06f5527 --- /dev/null +++ b/ecos/packages/devs/watchdog/arm/ebsa285/current/src/watchdog_ebsa285.cxx @@ -0,0 +1,150 @@ +//========================================================================== +// +// watchdog/ebsa285.cxx +// +// Watchdog implementation for Intel EBSA-285 StronARM board +// +//========================================================================== +// ####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): jskov (based on the MN10300 watchdog code by nickg) +// Contributors: jskov, nickg +// Date: 1999-08-26 +// Purpose: Watchdog class implementation +// Description: Contains an implementation of the Watchdog class for use +// with the EBSA285/21285 hardware watchdog timer. +// +//####DESCRIPTIONEND#### +// +//========================================================================== + +#include <pkgconf/system.h> // system configuration file +#include <pkgconf/watchdog.h> // configuration for this package +#include <pkgconf/kernel.h> // kernel config + +#include <cyg/infra/cyg_trac.h> // tracing macros +#include <cyg/kernel/instrmnt.h> // instrumentation + +#include <cyg/hal/hal_io.h> // IO register access + +#include <cyg/io/watchdog.hxx> // watchdog API + +// ------------------------------------------------------------------------- +// 21285 watchdog works by letting timer4 run; if it ever underflows, +// it resets the system. +// Timer 4 is set to run at fclk_in/16 = 50MHz/16 = 3.125MHz +// The timer register is 24 bits, so it can easily hold a value that +// gives a 1s timeout. +#define WATCHDOG_TIMER_TICKS 3125000 +#define WATCHDOG_RESOLUTION (1000000000) + +// ------------------------------------------------------------------------- +// Constructor + +void +Cyg_Watchdog::init_hw(void) +{ + CYG_REPORT_FUNCTION(); + + // HW doesn't need init + + resolution = WATCHDOG_RESOLUTION; + + CYG_REPORT_RETURN(); +} + + + +// ------------------------------------------------------------------------- +// Start the watchdog running. + +void +Cyg_Watchdog::start(void) +{ + CYG_REPORT_FUNCTION(); + + // Init the watchdog timer. + HAL_WRITE_UINT32(SA110_TIMER4_LOAD, WATCHDOG_TIMER_TICKS); + HAL_WRITE_UINT32(SA110_TIMER4_CLEAR, 0); + HAL_WRITE_UINT32(SA110_TIMER4_CONTROL, + SA110_TIMER_CONTROL_ENABLE|SA110_TIMER_CONTROL_SCALE_16); + // Enable the watchdog. + cyg_uint32 ctrl; + HAL_READ_UINT32(SA110_CONTROL, ctrl); + ctrl |= SA110_CONTROL_WATCHDOG; + HAL_WRITE_UINT32(SA110_CONTROL, ctrl); + + CYG_REPORT_RETURN(); +} + +// ------------------------------------------------------------------------- +// Reset watchdog timer. This needs to be called regularly to prevent +// the watchdog firing. + +void +Cyg_Watchdog::reset() +{ + CYG_REPORT_FUNCTION(); + + HAL_WRITE_UINT32(SA110_TIMER4_LOAD, WATCHDOG_TIMER_TICKS); + + CYG_REPORT_RETURN(); +} + +#if 0 +// ------------------------------------------------------------------------- +// Trigger the watchdog as if the timer had expired. + +void +Cyg_Watchdog::reset_action(void) +{ + CYG_REPORT_FUNCTION(); + + // Init the watchdog timer. + HAL_WRITE_UINT32(SA110_TIMER4_LOAD, 1); + HAL_WRITE_UINT32(SA110_TIMER4_CONTROL, SA110_TIMER_CONTROL_ENABLE); + // Enable the watchdog. + cyg_uint32 ctrl; + HAL_READ_UINT32(SA110_CONTROL, ctrl); + ctrl |= SA110_CONTROL_WATCHDOG; + HAL_WRITE_UINT32(SA110_CONTROL, ctrl); + + CYG_REPORT_RETURN(); +} +#endif + + +// ------------------------------------------------------------------------- +// EOF watchdog_ebsa285.cxx |