source: rtems/make/custom/mbx8xx.cfg @ 37b5d78

#
#  Config file for a PowerPC MPC821- or MPC860-based MBX card
#
#  This file is derived from:
#
#  Config file for a PowerPC 403 based helas403 card
#  Config file for MPC860 based Ethernet Comm Board
#

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

RTEMS_CPU=powerpc
RTEMS_CPU_MODEL=mpc8xx

# This is the actual bsp directory used during the build process.
RTEMS_BSP_FAMILY=mbx8xx

# The value assigned to RTEMS_CPU, RTEMS_CPU_MODEL and RTEMS_BSP get
# #defined in targopts.h. Source code can switch on these values with #ifdef
# to select what code to compile for a specific CPU family member and specific
# board. The RTEMS_CPU_MODEL is also used as the name of the libcpu directory,
# while the RTEMS_BSP_FAMILY is used as the name of the libbsp directory.
# For the MBX860 and MBX821, the boards and processors are sufficiently
# similar that the ports are unified and use RTEMS_CPU_MODEL=mpc8xx and
# RTEMS_BSP_FAMILY=mbx8xx. Because there are minor differences in the CPUs
# and the boards, it is necessary to specify them fully during the build.
# Do a "make RTEMS_BSP=<your_board> <target>" See below for a list of valid
# values for <your_board>.

ifeq ($(findstring mbx821,$(RTEMS_MBX_MODEL)),mbx821)
CPU_TYPE=821
else
ifeq ($(findstring mbx860,$(RTEMS_MBX_MODEL)),mbx860)
CPU_TYPE=860
else
RTEMS_BSP = mbx860_002
RTEMS_MBX_MODEL = mbx860_002
TARGET_ARCH=o-mbx860_002
CPU_TYPE=860
endif # mbx860
endif # mbx821

#  This section makes the target dependent options file.
#
#  Note that RTEMS_BSP matches the RTEMS_MBX_MODEL. Its value must be
#  defined in targopts.h, so the few places that require different code
#  for different MBX models can be distinguished. The value of
#  RTEMS_BSP is already defined in targopts.h and is one of:
#     mbx860_001    mbx821_001
#     mbx860_002    mbx821_002
#     mbx860_003    mbx821_003
#     mbx860_004    mbx821_004
#     mbx860_005    mbx821_005
#     mbx860_001b   mbx821_001b
#     mbx860_002b   mbx821_002b
#     mbx860_003b   mbx821_003b
#     mbx860_004b   mbx821_004b
#     mbx860_005b   mbx821_005b
#     mbx860_006b   mbx821_006b

#  The specific CPU model is defined, so the few places that require
#  different code for the MPC860 and MPC821 can be distinguished.
#  Either mpc860 or mpc821 is defined.
#
#  MBX8xx-specific options:
#
#  NVRAM_CONFIGURE
#    Define to 1 if you want the console driver, network driver and caches
#    configured at boot time from parameters stored in NVRAM. If set to 1,
#    most parameters below are ignored during the build. If not set to 1,
#    then the console driver is configured at build time, the network host
#    information is obtained from application supplied data structures, and
#    the caches are configured at boot time based on the information supplied
#    in this file.
#
#  UARTS_USE_TERMIOS
#    Define to 1 if you want termios support for every port.
#    Termios support is independent of the choice of UART I/O mode.
#
#  CONSOLE_MINOR (BSP--console driver)
#    Must be defined to be one of SMC1_MINOR, SMC2_MINOR, SCC2_MINOR,
#    SCC3_MINOR, or SCC4_MINOR. Determines which device will be registered
#    as /dev/console.
#
#  UARTS_IO_MODE (BSP--console driver)
#    Define to 0 or 1 if you want polled I/O performed by RTEMS.
#    Define to 1 if you want interrupt-driven performed by RTEMS.
#    Define to 2 if you want polled I/O performed by EPPCBug.
#    There is no provision to have a mix of interrupt-driven and polled I/O
#    ports, except that the printk port may use a different mode from the
#    other ports. If this is done, do not open the printk port from an RTEMS
#    application. With EPPCBug 1.1, if mode 2 is selected, CONSOLE_MINOR must
#    be set to SMC1_MINOR. This is a deficiency of the firmware: it does not
#    perform serial I/O on any port other than its default debug port, which
#    must be SMC1.
#
#  PRINTK_MINOR (BSP--console driver)
#    Must be defined to be one of SMC1_MINOR, SMC2_MINOR, SCC2_MINOR,
#    SCC3_MINOR, or SCC4_MINOR. Determines which device is used for output
#    by printk(). If the port that printk() uses is also used for other I/O
#    (e.g. if  PRINTK_MINOR == CONSOLE_MINOR), then both ports should use
#    the same type of I/O, otherwise the drivers will likely conflict with
#    each other.
#
#  PRINTK_IO_MODE (BSP--console driver)
#    Define to 0 or 1 if you want polled I/O performed by RTEMS.
#    Define to 2 if you want polled I/O performed by EPPCBug.
#    The printk() port is not configured to use termios. With EPPCBug 1.1,
#    if mode 2 is selected, PRINTK_MINOR must be set to SMC1_MINOR.
#    This is a deficiency of the firmware: it does not perform serial I/O
#    on any port other than its default debug port, which must be SMC1.
#    Printk always uses polled output.
#
#  EPPCBUG_SMC1 (BSP--console driver)
#    If defined, SMC1 is in use by EPPC-Bug. The console driver will not
#    re-initialize that port.
#
#  INSTRUCTION_CACHE_ENABLE (BSP--RTEMS)
#    If defined, the instruction cache will be enabled after address translation
#    is turned on.
#
#  DATA_CACHE_ENABLE (BSP--RTEMS)
#    If defined, the data cache will be enabled after address translation
#    is turned on. 
#    
#  EPPCBUG_VECTORS (BSP--RTEMS)
#    If defined, vectors branch to EPPCBug, except the following: 
#    0x500 (external interrupt), 0x900 (decrementer).
#
#  PowerPC-specific options:
#       
#  PPC_USE_SPRG (RTEMS PowerPC port)
#     If defined (=1), then the PowerPC specific code in RTEMS will use some
#     of the special purpose registers to slightly optimize interrupt
#     response time.  The use of these registers can conflict with 
#     other tools like debuggers.  This should be 0 when using EPPCBug 
#     because its uses most SPRGs (do not believe the documentation!).
#
#  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 "#ifdef mpc$(CPU_TYPE)"                       >>$@
        @echo "#undef mpc$(CPU_TYPE)"                       >>$@
        @echo "#endif"                                      >>$@
        @echo "#define mpc$(CPU_TYPE) 1"                    >>$@
        @echo                                               >>$@
        @echo "#define NVRAM_CONFIGURE 1"                   >>$@
        @echo "#define UARTS_USE_TERMIOS 0"                 >>$@
        @echo "#define CONSOLE_MINOR SMC2_MINOR"            >>$@
        @echo "#define UARTS_IO_MODE 0"                     >>$@
        @echo "#define PRINTK_MINOR SMC2_MINOR"             >>$@
        @echo "#define PRINTK_IO_MODE 0"                    >>$@
        @echo "#define EPPCBUG_SMC1 1"                      >>$@
        @echo "#define EPPCBUG_VECTORS 1"                   >>$@
        @echo "#define INSTRUCTION_CACHE_ENABLE 1"          >>$@
        @echo "#define DATA_CACHE_ENABLE 1"                 >>$@
        @echo                                               >>$@
        @echo "#define PPC_VECTOR_FILE_BASE 0x0000"         >>$@
        @echo "#define PPC_USE_SPRG 0"                      >>$@
        @echo "#define PPC_USE_DATA_CACHE 1"                >>$@
        @echo                                               >>$@
endef

#  This contains the compiler options necessary to select the CPU model
#  and (hopefully) optimize for it.
#
CPU_CFLAGS = -mcpu=$(CPU_TYPE)

CFLAGS_DEBUG_V += -ggdb
CXXFLAGS_DEBUG_V += -ggdb

# optimize flag: typically -O, could use -O4 or -fast
# -O4 is ok for RTEMS
# NOTE: some level of -O may be actually required by inline assembler
# CFLAGS_OPTIMIZE_V=-O4 -fno-keep-inline-functions
CFLAGS_OPTIMIZE_V=-O4 -fno-keep-inline-functions
CXXFLAGS_OPTIMIZE_V=-O4

# 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)
# The --defsym arguments define arguments which are required by the linkcmds
# file which is designed for gcc 2.8
define make-exe
        $(LD) $(XLDFLAGS) -T $(LINKCMDS) -o $(basename $@)_sym.exe \
            --defsym __fini=0 --defsym __init=0 \
            -u atexit -u __vectors -u start \
            $(START_FILE) $(LINK_OBJS) --start-group $(LINK_LIBS) --end-group
        $(NM) -g -n $(basename $@)_sym.exe> $(basename $@).nm
        $(STRIP) -O $(basename $@).exe $(basename $@)_sym-exe
        $(SIZE) $(basename $@)_sym.exe
endef
else
define make-exe
        $(LINK.c) $(AM_CFLAGS) $(AM_LDFLAGS) $(MBX8xx_LDFLAGS) \
            -o $(basename $@)_sym.exe $(LINK_OBJS) $(LINK_LIBS)
        $(NM) -g -n $(basename $@)_sym.exe > $(basename $@).nm
        $(STRIP) -o $(basename $@).exe $(basename $@)_sym.exe
        $(SIZE) $(basename $@)_sym.exe
endef
endif

# Miscellaneous additions go here

# Override default start file
START_BASE=