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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [hal/] [i386/] [arch/] [current/] [cdl/] [hal_i386.cdl] - Rev 856
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# ====================================================================
#
# hal_i386.cdl
#
# i386 architectural HAL package 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
# Original data: jskov
# Contributors:
# Date: 1999-11-01
#
#####DESCRIPTIONEND####
#
# ====================================================================
cdl_package CYGPKG_HAL_I386 {
display "i386 architecture"
parent CYGPKG_HAL
hardware
include_dir cyg/hal
define_header hal_i386.h
description "
The i386 architecture HAL package provides generic
support for this processor architecture. It is also
necessary to select a specific target platform HAL
package."
implements CYGINT_PROFILE_HAL_MCOUNT
compile hal_misc.c context.S i386_stub.c hal_syscall.c
make {
<PREFIX>/lib/vectors.o : <PACKAGE>/src/vectors.S
$(CC) -Wp,-MD,vectors.tmp $(INCLUDE_PATH) $(CFLAGS) -c -o $@ $<
@echo $@ ": \\" > $(notdir $@).deps
@tail -n +2 vectors.tmp >> $(notdir $@).deps
@echo >> $(notdir $@).deps
@rm vectors.tmp
}
make {
<PREFIX>/lib/target.ld: <PACKAGE>/src/i386.ld
$(CC) -E -P -Wp,-MD,target.tmp -DEXTRAS=1 -xc $(INCLUDE_PATH) $(ACTUAL_CFLAGS) -o $@ $<
@echo $@ ": \\" > $(notdir $@).deps
@tail -n +2 target.tmp >> $(notdir $@).deps
@echo >> $(notdir $@).deps
@rm target.tmp
}
cdl_component CYGPKG_HAL_SMP_SUPPORT {
display "SMP support"
default_value 0
requires { CYGHWR_HAL_I386_FPU_SWITCH_LAZY == 0 }
cdl_option CYGPKG_HAL_SMP_CPU_MAX {
display "Max number of CPUs supported"
flavor data
default_value 2
}
}
cdl_component CYGHWR_HAL_I386_FPU {
display "Enable I386 FPU support"
default_value 1
description "This component enables support for the
I386 floating point unit."
cdl_option CYGHWR_HAL_I386_FPU_SWITCH_LAZY {
display "Use lazy FPU state switching"
flavor bool
default_value 1
description "
This option enables lazy FPU state switching.
The default behaviour for eCos is to save and
restore FPU state on every thread switch, interrupt
and exception. While simple and deterministic, this
approach can be expensive if the FPU is not used by
all threads. The alternative, enabled by this option,
is to use hardware features that allow the FPU state
of a thread to be left in the FPU after it has been
descheduled, and to allow the state to be switched to
a new thread only if it actually uses the FPU. Where
only one or two threads use the FPU this can avoid a
lot of unnecessary state switching."
}
}
cdl_component CYGHWR_HAL_I386_PENTIUM {
display "Enable Pentium class CPU features"
default_value 0
description "This component enables support for various
features of Pentium class CPUs."
cdl_option CYGHWR_HAL_I386_PENTIUM_SSE {
display "Save/Restore SSE registers on context switch"
flavor bool
default_value 0
description "
This option enables SSE state switching. The default
behaviour for eCos is to ignore the SSE registers.
Enabling this option adds SSE state information to
every thread context."
}
cdl_option CYGHWR_HAL_I386_PENTIUM_GDB_REGS {
display "Support extra Pentium registers in GDB stub"
flavor bool
default_value 0
description "
This option enables support for extra Pentium registers
in the GDB stub. These are registers such as CR0-CR4, and
all MSRs. Not all GDBs support these registers, so the
default behaviour for eCos is to not include them in the
GDB stub support code."
}
}
cdl_option CYGBLD_LINKER_SCRIPT {
display "Linker script"
flavor data
no_define
calculated { "src/i386.ld" }
}
cdl_interface CYGINT_HAL_I386_MEM_REAL_REGION_TOP {
display "Implementations of hal_i386_mem_real_region_top()"
}
cdl_component CYGPKG_REDBOOT_I386_LINUX_EXEC {
display "Provide the exec command in RedBoot"
flavor none
active_if CYGBLD_BUILD_REDBOOT_WITH_EXEC
description "
This option contains requirements for booting linux
from RedBoot. The component is enabled/disabled from
RedBoots CDL."
compile -library=libextras.a redboot_linux_exec.c
cdl_option CYGHWR_REDBOOT_I386_TRAMPOLINE_ADDRESS {
display "Address for the trampoline code"
flavor data
default_value 0x7C000
description "This is the address to where the trampoline code is
copied. The trampoline copies the image to its
final location and jumps to its entry point."
}
}
}
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