Subversion Repositories openrisc_2011-10-31

#

#  Config file for the European Space Agency ERC32

#  a V7 SPARC processor derived from the Cypress 601/602 set.

#

#  $Id: erc32.cfg,v 1.2 2001-09-27 12:02:52 chris Exp $

#

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

RTEMS_CPU=sparc

RTEMS_CPU_MODEL=erc32

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

RTEMS_BSP_FAMILY=erc32

#   The -mflat avoids the use of save/restore instructions.  It has

#   a negative impact on the performance of RTEMS and should not be used.

ifeq ($(RTEMS_USE_GCC272),yes)

#     -mno-v8 says not to use v8 level instructions.  i.e. use v7 only

CPU_CFLAGS = -mno-v8 -mcypress

else

#     -mcpu=cypress says to optimize for a Cypress 60x chipset

CPU_CFLAGS = -mcpu=cypress

endif

# optimize flag: typically -0, could use -O4 or -fast

# -O4 is ok for RTEMS

CFLAGS_OPTIMIZE_V=-O4

#  This 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

#

#  NO_TABLE_MOVE (SPARC PORT)

#     do not have a second trap table -- use the BSP's

#

#  RTEMS_DEBUG (RTEMS)

#     If defined, debug checks in RTEMS and support library code are enabled.

#

#  CONSOLE_USE_POLLED     (erc32_bsp)

#  CONSOLE_USE_INTERRUPTS (erc32_bsp)

#     The erc32 console driver can operate in either polled or interrupt mode.

#     Under the simulator (especially when FAST_UART is defined), polled seems

#     to operate better.  It is common for a task to print a line (like the

#     end of test message) and then exit.  In this case, the program returns

#     control to the simulator command line before the program has even queued

#     the output to the uart.  Thus sis has no chance of getting the data out.

#

#  SIMSPARC_FAST_IDLE (erc32_bsp)

#     If defined, speed up the clock ticks while the idle task is running so

#     time spent in the idle task is minimized.  This significantly reduces

#     the wall time required to execute the RTEMS test suites.

#

#  FPU_REVB (erc32_bsp)

#     If defined, enables work-around for bug 3.14 in FPU rev.B or rev.C

#

define make-target-options

        @echo "/* #define NDEBUG 1 */ "                            >>$@

        @echo "#define RTEMS_TEST_NO_PAUSE 1"                      >>$@

        @echo "/* #define RTEMS_DEBUG  1 */"                       >>$@

        @echo "#define NO_TABLE_MOVE 1"                            >>$@

        @echo "#define CONSOLE_USE_INTERRUPTS 0"                   >>$@

        @echo "#define CONSOLE_USE_POLLED !CONSOLE_USE_INTERRUPTS" >>$@

        @echo "/* #define SIMSPARC_FAST_IDLE 1 */"                 >>$@

        @echo "#define FPU_REVB 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)

define make-exe

        $(LD) -u _sbrk $(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 $(basename $@).exe \

            $(LINK_OBJS) $(LINK_LIBS)

        $(NM) -g -n $(basename $@).exe > $(basename $@).num

        $(SIZE) $(basename $@).exe

endef

endif

# Miscellaneous additions go here