#
# 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:
#
# 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_USE_INTERRUPTS (BSP--console driver)
# Define if you want interrupt-driven I/O instead of polling. Superceeded
# by EPPCBUG_SMC1 on SMC1.
#
# EPPCBUG_SMC1 (BSP--console driver)
# If defined, the I/O through the SCM1 is done through the EPPCBug firmware.
# Because of limitations in revision 1.1 of the firmware, EPPCBug must be
# configured to use SMC1 as its console. If not defined, I/O through SMC1
# is done through a RTEMS device driver.
#
# EPPCBUG_VECTORS (BSP--RTEMS)
# If defined, the most vectors branch to EPPCBug, except the following:
# 0x500 (external interrupt), 0x900 (decrementer).
#
# 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.
#
# 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 (don't 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.
#
# RTEMS generic options:
#
# 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)
# If defined, do not pause between screens of output in the rtems tests.
#
# STACK_CHECKER_ON (RTEMS support code)
# If defined, stack bounds checking is enabled.
#
# STACK_CHECKER_REPORT_USAGE (RTEMS support code)
# If this and STACK_CHECKER_ON are defined, then a report on stack usage
# per task is printed when the program exits.
#
# RTEMS_DEBUG (RTEMS)
# If defined, debug checks in RTEMS and support library code are enabled.
define make-target-options
@echo "#ifdef mpc$(CPU_TYPE)" >>$@
@echo "#undef mpc$(CPU_TYPE)" >>$@
@echo "#endif" >>$@
@echo "#define mpc$(CPU_TYPE) 1" >>$@
@echo >>$@
@echo "#define CONSOLE_MINOR SMC2_MINOR" >>$@
@echo "#define UARTS_USE_INTERRUPTS 1" >>$@
@echo "#define EPPCBUG_SMC1 1" >>$@
@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" */ >>$@
@echo >>$@
@echo "/* #define NDEBUG 1 */ " >>$@
@echo "#define RTEMS_TEST_NO_PAUSE 1" >>$@
@echo "/* #define STACK_CHECKER_ON 1 */" >>$@
@echo "/* #define STACK_CHECKER_REPORT_USAGE 1 */" >>$@
@echo "/* #define RTEMS_DEBUG 1 */" >>$@
endef
# This contains the compiler options necessary to select the CPU model
# and (hopefully) optimize for it.
#
CPU_CFLAGS = -mcpu=$(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) \
--defsym __fini=0 --defsym __init=0 \
-o $@ -u atexit -u __vectors -u start \
$(START_FILE) $(LINK_OBJS) --start-group $(LINK_LIBS) --end-group
$(NM) -g -n $@ > $(basename $@).num
$(STRIP) -o $(basename $@).elf $@
$(SIZE) $@
endef
else
define make-exe
$(LINK.c) $(AM_CFLAGS) $(AM_LDFLAGS) -o $(basename $@).exe \
$(LINK_OBJS) $(LINK_LIBS)
$(NM) -g -n $@ > $(basename $@).nm
$(STRIP) -o $(basename $@) $@
$(SIZE) $@
endef
endif
# Miscellaneous additions go here
# Override default start file
START_BASE=