source: rtems/make/custom/erc32.cfg @ 206a0b38

#
#  Config file for the European Space Agency ERC32
#  a V7 SPARC processor derived from the Cypress 601/602 set.
#
#  $Id$
#

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

RTEMS_CPU=sparc

ifeq ($(RTEMS_CPU_MODEL),erc32nfp)
MSOFT_FLOAT = -msoft-float
else
RTEMS_CPU_MODEL=erc32
endif
# 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
# FIXME: This known not to work with gcc's >= gcc-2.95
CPU_CFLAGS = -mno-v8 -mcypress $(MSOFT_FLOAT)
else
#     -mcpu=cypress says to optimize for a Cypress 60x chipset
CPU_CFLAGS = -mcpu=cypress $(MSOFT_FLOAT)
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

#  NO_TABLE_MOVE (SPARC PORT)
#     do not have a second trap table -- use the BSP's
#
#  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
#
#  CPU_U32_FIX (all)
#     Needed to align received TCP/IP packets since SPARC does not 
#     support unaligned memory access.
#

define make-target-options
        @echo "#define NO_TABLE_MOVE 1"                            >>$@
        @echo "/* #define SIMSPARC_FAST_IDLE 1 */"                 >>$@
        @echo "/* #define FPU_REVB 1 */"                           >>$@
        @echo "#define CPU_U32_FIX 1"                              >>$@
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