Subversion Repositories openrisc_2011-10-31

#
#  Config file for the mvme167 BSP 
#
#  $Id: mvme167.cfg,v 1.2 2001-09-27 12:02:52 chris Exp $
#

# THIS BSP USES ELF IMAGES. IT WILL NOT WORK WITH COFF UNLESS CHANGES
# ARE MADE TO THE LINKCMDS FILE.

RTEMS_CPU=m68k
RTEMS_CPU_MODEL=m68040

include $(RTEMS_ROOT)/make/custom/default.cfg

# This is the actual bsp directory used during the build process.
RTEMS_BSP_FAMILY=mvme167

#
#  This contains the compiler options necessary to select the CPU model
#  and (hopefully) optimize for it.  We also specify the BSP during compilation.
#  This should really get its own flag, but it works here.
#

CPU_CFLAGS = -m68040 -DRTEMS_BSP=$(RTEMS_BSP)
CFLAGS_DEBUG_V += -ggdb

# optimize flag: typically -O, could use -O4 or -fast
# -O4 is ok for RTEMS
CFLAGS_OPTIMIZE_V=-O4 -fomit-frame-pointer

#  This section makes the target dependent options file.
#  NDEBUG (C library)
#     if defined asserts do not generate code.  This is commonly used
#     as a command line option.
#
#  RTEMS_TEST_NO_PAUSE (RTEMS tests)
#     do not pause between screens of output in the rtems tests
#
#  RTEMS_DEBUG (RTEMS)
#     If defined, debug checks in RTEMS and support library code are enabled.
#
#  CD2401_INT_LEVEL
#         Interrupt level for the CD2401.
#
#  CD2401_POLLED_IO
#         0 for interrupt-driven, 1 for polled I/O.

define make-target-options
        @echo "/* #define NDEBUG 1 */ "                     >>$@
        @echo "#define RTEMS_TEST_NO_PAUSE 1"               >>$@
        @echo "/* #define RTEMS_DEBUG  1 */"                >>$@
        @echo "#define CD2401_INT_LEVEL 1"                  >>$@
        @echo "#define CD2401_POLLED_IO 1"                  >>$@
        
        
endef

# Here is the rule to actually build a $(ARCH)/foo.exe
# It also builds $(ARCH)/foo.nm
# Usage ref: src/tests/sptest/sp1/Makefile
#
# We use TFTP to transfer files to the MVME167. We generate binary files
# rather than S-records. We skip the header during downloads.

# The following are definitions of make-exe which will work using ld as
# is currently required.  It is expected that as of gcc 2.8, the end user
# will be able to override parts of the compilers specs and link using gcc.

ifeq ($(RTEMS_USE_GCC272),yes)

# The MC68040 does not implement all MC68881/MC68882 instructions, so use
# either the gcc floating-point software support (msoft-float libraries), or
# use the Motorola FPSP floating-point emulator in
#   rtems/c/src/lib/libcpu/m68k/m68040/fpsp
# The default is to use the FPSP. 
# To use the msoft-float libraries, uncomment the three lines below.
# You then should comment the M68KFPSPInstallExceptionHandlers() statement
# in rtems/c/src/lib/libbsp/m68k/mvme167/startup/bststart.c in bsp_start().
# Floating-point support will then be limited. See the mvme167 README file
# for more details.

# LIBC_LIBC = $(RTEMS_LIBC_DIR)/lib/msoft-float/libc.a
# LIBC_LIBM = $(RTEMS_LIBC_DIR)/lib/msoft-float/libm.a
# LIBGCC = $(shell $(CC) -msoft-float -print-libgcc-file-name)

define make-exe
        $(LD) $(LDFLAGS) -N -T $(LINKCMDS) -o $(basename $@).exe \
            $(START_FILE) $(LINK_OBJS) --start-group $(LINK_LIBS) --end-group
        $(NM) -g -n $(basename $@).exe > $(basename $@).num
        $(SIZE) $(basename $@).exe
endef
else
define make-exe
        $(LINK.c) $(AM_CFLAGS) $(AM_LDFLAGS) -o $@ \
            $(LINK_OBJS) $(LINK_LIBS)
        $(NM) -g -n $@ > $(basename $@).nm
        $(STRIP) -o $(basename $@) $@
        $(SIZE) $(basename $@).exe
endef
endif

# Miscellaneous additions go here