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Patch from John Cotton <john.cotton@nrc.ca>, Charles-Antoine Gauthier
<charles.gauthier@iit.nrc.ca>, and Darlene A. Stewart <Darlene.Stewart@nrc.ca> to add support for a number of very significant things: + BSPs for many variations on the Motorola MBX8xx board series + Cache Manager including initial support for m68040 and PowerPC + Rework of mpc8xx libcpu code so all mpc8xx CPUs now use same code base. + Rework of eth_comm BSP to utiltize above. John reports this works on the 821 and 860
This commit is contained in:
Joel Sherrill
12
make/custom/mbx821_001.cfg
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12
make/custom/mbx821_001.cfg
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#
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# Config file for a PowerPC MPC860-based MBX821-001 card.
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#
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#
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# All MBX8xx configurations share the same base file, only a few
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# parameters differ.
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#
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RTEMS_MBX_MODEL=mbx821_001
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include $(RTEMS_ROOT)/make/custom/mbx8xx.cfg
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12
make/custom/mbx860_002.cfg
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make/custom/mbx860_002.cfg
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#
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# Config file for a PowerPC MPC860-based MBX860-002 card.
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#
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#
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# All MBX8xx configurations share the same base file, only a few
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# parameters differ.
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#
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RTEMS_MBX_MODEL=mbx860_002
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include $(RTEMS_ROOT)/make/custom/mbx8xx.cfg
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196
make/custom/mbx8xx.cfg
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196
make/custom/mbx8xx.cfg
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#
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# Config file for a PowerPC MPC821- or MPC860-based MBX card
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#
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# This file is derived from:
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#
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# Config file for a PowerPC 403 based helas403 card
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# Config file for MPC860 based Ethernet Comm Board
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#
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include $(RTEMS_ROOT)/make/custom/default.cfg
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RTEMS_CPU=powerpc
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RTEMS_CPU_MODEL=mpc8xx
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# This is the actual bsp directory used during the build process.
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RTEMS_BSP_FAMILY=mbx8xx
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# The value assigned to RTEMS_CPU, RTEMS_CPU_MODEL and RTEMS_BSP get
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# #defined in targopts.h. Source code can switch on these values with #ifdef
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# to select what code to compile for a specific CPU family member and specific
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# board. The RTEMS_CPU_MODEL is also used as the name of the libcpu directory,
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# while the RTEMS_BSP_FAMILY is used as the name of the libbsp directory.
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# For the MBX860 and MBX821, the boards and processors are sufficiently
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# similar that the ports are unified and use RTEMS_CPU_MODEL=mpc8xx and
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# RTEMS_BSP_FAMILY=mbx8xx. Because there are minor differences in the CPUs
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# and the boards, it is necessary to specify them fully during the build.
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# Do a "make RTEMS_BSP=<your_board> <target>" See below for a list of valid
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# values for <your_board>.
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ifeq ($(findstring mbx821,$(RTEMS_MBX_MODEL)),mbx821)
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CPU_TYPE=821
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else
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ifeq ($(findstring mbx860,$(RTEMS_MBX_MODEL)),mbx860)
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CPU_TYPE=860
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else
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RTEMS_BSP = mbx860_002
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RTEMS_MBX_MODEL = mbx860_002
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TARGET_ARCH=o-mbx860_002
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CPU_TYPE=860
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endif # mbx860
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endif # mbx821
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# This section makes the target dependent options file.
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#
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# Note that RTEMS_BSP matches the RTEMS_MBX_MODEL. Its value must be
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# defined in targopts.h, so the few places that require different code
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# for different MBX models can be distinguished. The value of
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# RTEMS_BSP is already defined in targopts.h and is one of:
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# mbx860_001 mbx821_001
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# mbx860_002 mbx821_002
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# mbx860_003 mbx821_003
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# mbx860_004 mbx821_004
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# mbx860_005 mbx821_005
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# mbx860_001b mbx821_001b
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# mbx860_002b mbx821_002b
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# mbx860_003b mbx821_003b
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# mbx860_004b mbx821_004b
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# mbx860_005b mbx821_005b
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# mbx860_006b mbx821_006b
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# The specific CPU model is defined, so the few places that require
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# different code for the MPC860 and MPC821 can be distinguished.
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# Either mpc860 or mpc821 is defined.
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#
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# MBX8xx-specific options:
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#
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# CONSOLE_MINOR (BSP--console driver)
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# Must be defined to be one of SMC1_MINOR, SMC2_MINOR, SCC2_MINOR,
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# SCC3_MINOR, or SCC4_MINOR. Determines which device will be registered
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# as /dev/console.
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#
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# UARTS_USE_INTERRUPTS (BSP--console driver)
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# Define if you want interrupt-driven I/O instead of polling. Superceeded
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# by EPPCBUG_SMC1 on SMC1.
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#
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# EPPCBUG_SMC1 (BSP--console driver)
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# If defined, the I/O through the SCM1 is done through the EPPCBug firmware.
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# Because of limitations in revision 1.1 of the firmware, EPPCBug must be
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# configured to use SMC1 as its console. If not defined, I/O through SMC1
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# is done through a RTEMS device driver.
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#
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# EPPCBUG_VECTORS (BSP--RTEMS)
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# If defined, the most vectors branch to EPPCBug, except the following:
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# 0x500 (external interrupt), 0x900 (decrementer).
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#
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# INSTRUCTION_CACHE_ENABLE (BSP--RTEMS)
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# If defined, the instruction cache will be enabled after address translation
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# is turned on.
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#
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# DATA_CACHE_ENABLE (BSP--RTEMS)
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# If defined, the data cache will be enabled after address translation
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# is turned on.
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#
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# PowerPC-specific options:
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#
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# PPC_USE_SPRG (RTEMS PowerPC port)
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# If defined (=1), then the PowerPC specific code in RTEMS will use some
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# of the special purpose registers to slightly optimize interrupt
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# response time. The use of these registers can conflict with
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# other tools like debuggers. This should be 0 when using EPPCBug
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# because its uses most SPRGs (don't believe the documentation!).
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#
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# PPC_USE_DATA_CACHE (RTEMS PowerPC port)
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# If defined, then the PowerPC specific code in RTEMS will use
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# data cache instructions to optimize the context switch code.
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# This code can conflict with debuggers or emulators.
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#
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# RTEMS generic options:
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#
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# NDEBUG (C library)
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# If defined, asserts do not generate code. This is commonly used
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# as a command line option.
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#
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# RTEMS_TEST_NO_PAUSE (RTEMS tests)
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# If defined, do not pause between screens of output in the rtems tests.
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#
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# STACK_CHECKER_ON (RTEMS support code)
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# If defined, stack bounds checking is enabled.
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#
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# STACK_CHECKER_REPORT_USAGE (RTEMS support code)
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# If this and STACK_CHECKER_ON are defined, then a report on stack usage
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# per task is printed when the program exits.
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#
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# RTEMS_DEBUG (RTEMS)
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# If defined, debug checks in RTEMS and support library code are enabled.
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define make-target-options
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@echo "#ifdef mpc$(CPU_TYPE)" >>$@
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@echo "#undef mpc$(CPU_TYPE)" >>$@
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@echo "#endif" >>$@
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@echo "#define mpc$(CPU_TYPE) 1" >>$@
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@echo >>$@
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@echo "#define CONSOLE_MINOR SMC2_MINOR" >>$@
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@echo "#define UARTS_USE_INTERRUPTS 1" >>$@
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@echo "#define EPPCBUG_SMC1 1" >>$@
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@echo "#define EPPCBUG_VECTORS 1" >>$@
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@echo "#define INSTRUCTION_CACHE_ENABLE 1" >>$@
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@echo "#define DATA_CACHE_ENABLE 1" >>$@
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@echo >>$@
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@echo "#define PPC_VECTOR_FILE_BASE 0x0000" >>$@
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@echo "#define PPC_USE_SPRG 0" >>$@
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@echo "/* #define PPC_USE_DATA_CACHE 1" */ >>$@
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@echo >>$@
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@echo "/* #define NDEBUG 1 */ " >>$@
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@echo "#define RTEMS_TEST_NO_PAUSE 1" >>$@
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@echo "/* #define STACK_CHECKER_ON 1 */" >>$@
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@echo "/* #define STACK_CHECKER_REPORT_USAGE 1 */" >>$@
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@echo "/* #define RTEMS_DEBUG 1 */" >>$@
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endef
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# This contains the compiler options necessary to select the CPU model
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# and (hopefully) optimize for it.
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#
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CPU_CFLAGS = -mcpu=$(CPU_TYPE)
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CFLAGS_DEBUG_V += -ggdb
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CXXFLAGS_DEBUG_V += -ggdb
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# optimize flag: typically -O, could use -O4 or -fast
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# -O4 is ok for RTEMS
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# NOTE: some level of -O may be actually required by inline assembler
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# CFLAGS_OPTIMIZE_V=-O4 -fno-keep-inline-functions
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CFLAGS_OPTIMIZE_V=-O4 -fno-keep-inline-functions
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CXXFLAGS_OPTIMIZE_V=-O4
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# The following are definitions of make-exe which will work using ld as
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# is currently required. It is expected that as of gcc 2.8, the end user
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# will be able to override parts of the compilers specs and link using gcc.
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ifeq ($(RTEMS_USE_GCC272),yes)
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# The --defsym arguments define arguments which are required by the linkcmds
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# file which is designed for gcc 2.8
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define make-exe
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$(LD) $(XLDFLAGS) -T $(LINKCMDS) \
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--defsym __fini=0 --defsym __init=0 \
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-o $@ -u atexit -u __vectors -u start \
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$(START_FILE) $(LINK_OBJS) --start-group $(LINK_LIBS) --end-group
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$(NM) -g -n $@ > $(basename $@).num
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$(STRIP) -o $(basename $@).elf $@
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$(SIZE) $@
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endef
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else
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define make-exe
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$(CC) $(CFLAGS) $(CPU_CFLAGS) $(XLDFLAGS) -o $(basename $@).exe \
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$(LINK_OBJS) $(LINK_LIBS)
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$(NM) -g -n $@ > $(basename $@).nm
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$(STRIP) -o $(basename $@) $@
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$(SIZE) $@
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endef
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endif
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# Miscellaneous additions go here
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# Override default start file
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START_BASE=
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