# ====================================================================
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# ====================================================================
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#
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#
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# hal_synth.cdl
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# hal_synth.cdl
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#
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#
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# Synthetic target architectural configuration data
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# Synthetic target architectural configuration data
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#
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#
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# ====================================================================
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# ====================================================================
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#####ECOSGPLCOPYRIGHTBEGIN####
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#####ECOSGPLCOPYRIGHTBEGIN####
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## -------------------------------------------
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## -------------------------------------------
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## This file is part of eCos, the Embedded Configurable Operating System.
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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 Red Hat, Inc.
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## Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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##
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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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## 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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## 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 version.
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## Software Foundation; either version 2 or (at your option) any later version.
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##
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##
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## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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## eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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## WARRANTY; without even the implied warranty of MERCHANTABILITY or
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## 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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## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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## for more details.
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## for more details.
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##
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##
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## You should have received a copy of the GNU General Public License along
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## You should have received a copy of the GNU General Public License along
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## with eCos; if not, write to the Free Software Foundation, Inc.,
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## with eCos; if not, write to the Free Software Foundation, Inc.,
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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## 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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##
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##
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## As a special exception, if other files instantiate templates or use macros
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## As a special exception, if other files instantiate templates or use macros
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## or inline functions from this file, or you compile this file and link it
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## or inline functions from this file, or you compile this file and link it
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## with other works to produce a work based on this file, this file does not
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## with other works to produce a work based on this file, this file does not
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## by itself cause the resulting work to be covered by the GNU General Public
|
## by itself cause the resulting work to be covered by the GNU General Public
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## License. However the source code for this file must still be made available
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## License. However the source code for this file must still be made available
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## in accordance with section (3) of the GNU General Public License.
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## in accordance with section (3) of the GNU General Public License.
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##
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##
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## This exception does not invalidate any other reasons why a work based on
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## This exception does not invalidate any other reasons why a work based on
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## this file might be covered by the GNU General Public License.
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## this file might be covered by the GNU General Public License.
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##
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##
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## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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## Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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## at http://sources.redhat.com/ecos/ecos-license/
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## at http://sources.redhat.com/ecos/ecos-license/
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## -------------------------------------------
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## -------------------------------------------
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#####ECOSGPLCOPYRIGHTEND####
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#####ECOSGPLCOPYRIGHTEND####
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# ====================================================================
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# ====================================================================
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######DESCRIPTIONBEGIN####
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######DESCRIPTIONBEGIN####
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#
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#
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# Author(s): jskov
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# Author(s): jskov
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# Original data: jskov
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# Original data: jskov
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# Contributors: bartv
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# Contributors: bartv
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# Date: 1999-11-01
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# Date: 1999-11-01
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#
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#
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#####DESCRIPTIONEND####
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#####DESCRIPTIONEND####
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#
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#
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# ====================================================================
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# ====================================================================
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cdl_package CYGPKG_HAL_SYNTH {
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cdl_package CYGPKG_HAL_SYNTH {
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display "Linux Synthetic target"
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display "Linux Synthetic target"
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parent CYGPKG_HAL_I386
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parent CYGPKG_HAL_I386
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define_header hal_synth.h
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define_header hal_synth.h
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include_dir cyg/hal
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include_dir cyg/hal
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requires !CYGDBG_KERNEL_DEBUG_GDB_THREAD_SUPPORT
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requires !CYGDBG_KERNEL_DEBUG_GDB_THREAD_SUPPORT
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description "
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description "
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The Linux Synthetic Target HAL package provides the
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The Linux Synthetic Target HAL package provides the
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support needed to run eCos binaries on top of a
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support needed to run eCos binaries on top of a
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Linux kernel."
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Linux kernel."
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implements CYGINT_HAL_TESTS_NO_CACHES
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implements CYGINT_HAL_TESTS_NO_CACHES
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make {
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make {
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/lib/target.ld: /src/synth.ld
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/lib/target.ld: /src/synth.ld
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$(CC) -E -P -Wp,-MD,target.tmp -DEXTRAS=1 -xc $(INCLUDE_PATH) $(CFLAGS) -o $@ $<
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$(CC) -E -P -Wp,-MD,target.tmp -DEXTRAS=1 -xc $(INCLUDE_PATH) $(CFLAGS) -o $@ $<
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@echo $@ ": \\" > $(notdir $@).deps
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@echo $@ ": \\" > $(notdir $@).deps
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@tail +2 target.tmp >> $(notdir $@).deps
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@tail +2 target.tmp >> $(notdir $@).deps
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@echo >> $(notdir $@).deps
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@echo >> $(notdir $@).deps
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@rm target.tmp
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@rm target.tmp
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}
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}
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compile synth_entry.c synth_diag.c synth_intr.c
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compile synth_entry.c synth_diag.c synth_intr.c
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define_proc {
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define_proc {
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puts $::cdl_system_header "#define CYGBLD_HAL_TARGET_H "
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puts $::cdl_system_header "#define CYGBLD_HAL_TARGET_H "
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}
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}
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# Real-time clock/counter specifics
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# Real-time clock/counter specifics
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cdl_component CYGNUM_HAL_RTC_CONSTANTS {
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cdl_component CYGNUM_HAL_RTC_CONSTANTS {
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display "Real-time clock constants."
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display "Real-time clock constants."
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description "
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description "
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These values are used in the usec field of the itimerval structure
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These values are used in the usec field of the itimerval structure
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when using getitimer/setitimer."
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when using getitimer/setitimer."
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flavor none
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flavor none
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cdl_option CYGNUM_HAL_RTC_NUMERATOR {
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cdl_option CYGNUM_HAL_RTC_NUMERATOR {
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display "Real-time clock numerator"
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display "Real-time clock numerator"
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flavor data
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flavor data
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calculated 1000000000
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calculated 1000000000
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}
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}
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cdl_option CYGNUM_HAL_RTC_DENOMINATOR {
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cdl_option CYGNUM_HAL_RTC_DENOMINATOR {
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display "Real-time clock denominator"
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display "Real-time clock denominator"
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flavor data
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flavor data
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calculated 100
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calculated 100
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}
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}
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cdl_option CYGNUM_HAL_RTC_PERIOD {
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cdl_option CYGNUM_HAL_RTC_PERIOD {
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display "Real-time clock period"
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display "Real-time clock period"
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flavor data
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flavor data
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calculated 10000
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calculated 10000
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}
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}
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}
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}
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# What to do when idling
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# What to do when idling
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cdl_option CYGIMP_HAL_IDLE_THREAD_SPIN {
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cdl_option CYGIMP_HAL_IDLE_THREAD_SPIN {
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display "Spin when idle"
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display "Spin when idle"
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default_value CYGIMP_IDLE_THREAD_YIELD
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default_value CYGIMP_IDLE_THREAD_YIELD
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description "
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description "
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By default, whenever the eCos application enters the idle thread
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By default, whenever the eCos application enters the idle thread
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the synthetic target HAL will make a select() system call. Effectively
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the synthetic target HAL will make a select() system call. Effectively
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this causes the application to block until an interrupt occurs,
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this causes the application to block until an interrupt occurs,
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without consuming any cpu resources, as if the hardware supported
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without consuming any cpu resources, as if the hardware supported
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some sort of IDLE instruction. Usually this behaviour is desirable.
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some sort of IDLE instruction. Usually this behaviour is desirable.
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However it interferes with the emulation of some hardware. For
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However it interferes with the emulation of some hardware. For
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example the synthetic watchdog timer device can use consumed cpu time
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example the synthetic watchdog timer device can use consumed cpu time
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rather than wallclock time to determine whether or not the watchdog
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rather than wallclock time to determine whether or not the watchdog
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has triggered, and if the process is spending nearly all its time
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has triggered, and if the process is spending nearly all its time
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blocked in select() then the watchdog will not trigger when it should.
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blocked in select() then the watchdog will not trigger when it should.
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There are also some kernel configurations which require that the idle
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There are also some kernel configurations which require that the idle
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thread does not block."
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thread does not block."
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}
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}
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requires { CYGIMP_IDLE_THREAD_YIELD implies CYGIMP_HAL_IDLE_THREAD_SPIN }
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requires { CYGIMP_IDLE_THREAD_YIELD implies CYGIMP_HAL_IDLE_THREAD_SPIN }
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cdl_option CYGBLD_LINKER_SCRIPT {
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cdl_option CYGBLD_LINKER_SCRIPT {
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display "Linker script"
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display "Linker script"
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flavor data
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flavor data
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no_define
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no_define
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calculated { "src/synth.ld" }
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calculated { "src/synth.ld" }
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}
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}
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}
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}
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