source: rtems/make/custom/mcp750.cfg @ 1614be8

#
#  Config file for Motorola MCP750 -- a MPC750 CompactPCI board
#
#  $Id$
#

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

RTEMS_CPU=powerpc
RTEMS_CPU_MODEL=mpc750
RTEMS_PPC_EXCEPTION_PROCESSING_MODEL=new

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

#  This section makes the target dependent options file.

#  PPC_VECTOR_FILE_BASE (ppc)
#     This defines the base address of the exception table.
#     NOTE: Vectors are actually at 0xFFF00000 but file starts at offset 0x0100
#
#  PPC_USE_DATA_CACHE (RTEMS PowerPC port)
#     If defined, then the PowerPC specific code in RTEMS will use 
#     data cache instructions to optimize the context switch code.
#     This code can conflict with debuggers or emulators.
#

define make-target-options
        @echo "#define PPCN_60X_USE_DINK 0"                   >>$@
        @echo "#define PPCN_60X_USE_NONE 1"                   >>$@
        @echo "#define PPC_USE_DATA_CACHE 1"                   >>$@
        @echo "#define PPC_VECTOR_FILE_BASE 0x0100"            >>$@
endef

#  This contains the compiler options necessary to select the CPU model
#  and (hopefully) optimize for it. 
#
# NOTE : cheking egcc 1.1.1 source code shows that the last know processor 
# is the 604 model and that this is the default generation option.
#
CPU_CFLAGS = -mcpu=750

# optimize flag: typically -0, could use -O4 or -fast
# -O4 is ok for RTEMS
# NOTE2: some level of -O may be actually required by inline assembler (at least
# -O2 so far.
# NOTE2 Apparently nobody really knows the status or r2 and r13.
# As far as I know, small data are pointer impose a very specific compliation
# model => not used.
# Currently the sdata2 and sbss2 sections are empty => r2 is not used...
CFLAGS_OPTIMIZE_V=-O4 -mmultiple -mstring -mstrict-align
#CFLAGS_OPTIMIZE_V=-O4 -fno-keep-inline-functions -fvolatile-global -fvolatile -mstrict-align -mcpu=750

# debug flags: typically none, but at least -O1 is required due to this
# BSP using inlined code
CFLAGS_DEBUG_V = -O1 -mmultiple -mstring -mstrict-align

# The following is a ld command file which works without using the
# -specs system in gcc 2.8.  IT HAS NEVER BEEN TESTED WITH THIS BSP!!!
#       $(LD) $(XLDFLAGS) -T $(LINKCMDS) \
#         -o $@ -u atexit -u __vectors -u download_entry $(LINK_FILES)
#       $(LD) $(XLDFLAGS) -Ttext 0x20000 \
#         -o $@ -u atexit -u __vectors -u download_entry $(LINK_FILES)

#       $(CC) -mmvme -mrtems -nostartfiles -mcpu=603 \
#           -o $(basename $@).exe -L $(PROJECT_RELEASE)/lib \
#            $(START_FILE) $(LINK_OBJS) \
#            $(LD_LIBS) \
#           -Wl,-\( -Wl,-lc -Wl,-lrtemsall -Wl,-lgcc -Wl,-\)
define make-exe
        $(LINK.c) $(AM_CFLAGS) $(AM_LDFLAGS) \
           -o $(basename $@).nxe $(LINK_OBJS) $(LINK_LIBS)
        $(NM) -g -n $(basename $@).nxe > $(basename $@).num
        $(SIZE) $(basename $@).nxe
        $(OBJCOPY) $(basename $@).nxe rtems -O binary -R .comment -S
        gzip -vf9 rtems
        $(LD) -o $@ $(PROJECT_RELEASE)/lib/bootloader.o --just-symbols=$(basename $@).nxe \
        -b binary rtems.gz -T $(PROJECT_RELEASE)/lib/ppcboot.lds \
        -Map $(basename $@).map && chmod 755 $@
        rm -f rtems.gz
endef

# Miscellaneous additions go here