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