#
# 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
cp $(basename $@)_sym.exe $(basename $@).exe
$(STRIP) $(basename $@).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
cp $(basename $@)_sym.exe $(basename $@).exe
$(STRIP) $(basename $@).exe
$(SIZE) $(basename $@)_sym.exe
endef
endif
# Miscellaneous additions go here
# Override default start file
START_BASE=
