Subversion Repositories openrisc_2011-10-31

#
#  Config file for a "ODS 68302" BSP
#
#  Differs from the gen68302 by providing most of the boot code as C
#  code. This allows separate board definitions to be based on C
#  header files. The file is based on the VARIANT defined.
#
#  $Id: ods68302.cfg,v 1.2 2001-09-27 12:02:52 chris Exp $
#

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

RTEMS_CPU=m68k
RTEMS_CPU_MODEL=m68302

# This is the actual bsp directory used during the build process.
RTEMS_BSP_FAMILY=ods68302

#
#  This contains the compiler options necessary to select the CPU model
#  and (hopefully) optimize for it. 
#
# 68000+softfloat results in gcc 2.95.2 giving default libraries. 
# CPU_CFLAGS = -m68302 -msoft-float
CPU_CFLAGS = -m68302
CPU_DEFINES = \
-DVARIANT=$(BSP_VARIANT) -DMC68302_BASE=$(MC68302_BASE) \
-DRAM_BASE=$(RAM_BASE) -DRAM_SIZE=$(RAM_SIZE) \
-DROM_BASE=$(ROM_BASE) -DROM_SIZE=$(ROM_SIZE)

# optimize flag: typically -0, could use -O4 or -fast
# -O4 is ok for RTEMS
CFLAGS_OPTIMIZE_V=-O4 -fomit-frame-pointer

# debugging please
CFLAGS_DEBUG_V =

#  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.

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

# 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)

# override default location of Standard C Library
LIBC_LIBC=$(RTEMS_LIBC_DIR)/lib/m68000/libc.a
LIBC_LIBM=$(RTEMS_LIBC_DIR)/lib/m68000/libm.a

define make-exe
        $(LD) $(LDFLAGS) -N -Ttext $(ROM_BASE) \
            -defsym MC68302_BASE=$(MC68302_BASE) \
            -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) $(AM_LDFLAGS) \
            -Wl,-defsym -Wl,MC68302_BASE=$(MC68302_BASE) \
            -o $@ \
            $(LINK_OBJS) $(LINK_LIBS)
        $(NM) -g -n $@ > $(basename $@).num
        $(SIZE) $@
endef
endif
# Miscellaneous additions go here

ifeq "$(strip $(BSP_VARIANT))" ""
BSP_VARIANT=bare
MC68302_BASE=0x00700000
RAM_BASE=0x00000000
RAM_SIZE=0x00100000

ifeq ($(RTEMS_DEBUGGER),yes)
ROM_BASE=0x00010000
LINKCMDS=$(PROJECT_RELEASE)/lib/debugrom
else
ROM_BASE=0x00C00000
LINKCMDS=$(PROJECT_RELEASE)/lib/rom
endif

ROM_SIZE=0x00100000

else

# pattern match the variant to set the memory map

endif