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lk/arch/m68k/rules.mk

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[arch][m68k] initial port to m68k Uses the QEMU virt machine for 68k defined in qemu 6.0+. Basic support that boots, prints to the console, takes input from console, and context switches. TODO: interrupt support, timer support.
2021-06-06 19:38:45 -07:00
LOCAL_DIR := $(GET_LOCAL_DIR)
MODULE := $(LOCAL_DIR)
[platform][rosco-m68k] Add port to the Rosco M68k board Port to the really neat 68010 based board at https://rosco-m68k.com/ Port Features: -10Mhz 68010 -1MB ram -Dual UART + timer implemented as a 68c681 chip -timer running at 1Khz, UART A for console -interrupt driven RX support Some amount of extending of the 68k exceptinon code was needed to support the autovectored irqs that the 68681 uart uses. Added build system support for 68010.
2022-04-12 00:25:12 -07:00
MODULE_SRCS += $(LOCAL_DIR)/arch.c
MODULE_SRCS += $(LOCAL_DIR)/asm.S
MODULE_SRCS += $(LOCAL_DIR)/exceptions.c
MODULE_SRCS += $(LOCAL_DIR)/exceptions_asm.S
MODULE_SRCS += $(LOCAL_DIR)/start.S
MODULE_SRCS += $(LOCAL_DIR)/thread.c
GLOBAL_DEFINES += SMP_MAX_CPUS=1
[arch][m68k] initial port to m68k Uses the QEMU virt machine for 68k defined in qemu 6.0+. Basic support that boots, prints to the console, takes input from console, and context switches. TODO: interrupt support, timer support.
2021-06-06 19:38:45 -07:00
# set the default toolchain to microblaze elf and set a #define
ifndef TOOLCHAIN_PREFIX
TOOLCHAIN_PREFIX := m68k-elf-
endif
[platform][rosco-m68k] Add port to the Rosco M68k board Port to the really neat 68010 based board at https://rosco-m68k.com/ Port Features: -10Mhz 68010 -1MB ram -Dual UART + timer implemented as a 68c681 chip -timer running at 1Khz, UART A for console -interrupt driven RX support Some amount of extending of the 68k exceptinon code was needed to support the autovectored irqs that the 68681 uart uses. Added build system support for 68010.
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# select the cpu based on flags the platform/target passes in
[make] default WITH_LINKER_GC to false at the place it is used Also switch the test logic to the TOBOOL macro.
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M68K_CPU ?= 68040 # default to 040
[platform][rosco-m68k] Add port to the Rosco M68k board Port to the really neat 68010 based board at https://rosco-m68k.com/ Port Features: -10Mhz 68010 -1MB ram -Dual UART + timer implemented as a 68c681 chip -timer running at 1Khz, UART A for console -interrupt driven RX support Some amount of extending of the 68k exceptinon code was needed to support the autovectored irqs that the 68681 uart uses. Added build system support for 68010.
2022-04-12 00:25:12 -07:00
[arch][m68k] add more switches for cpu models
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ifeq ($(M68K_CPU),68000)
ARCH_COMPILEFLAGS := -mcpu=68000
[fpu] have the arch layers set WITH_NO_FPU based on the cpu This will generally turn off more FPU codegen, even if its using software fallback unless the project/target/platform selects a cpu that has FPU support. This also turns off a few blocks of test code and the upcoming floating point printf if it's not present on the arch. This may break projects that were compiling for say cortex-m0 but expected FPU code to be present. If so it should be pretty easy to override it, but not going to add that yet unless it's necessary.
2025-10-08 23:41:13 -07:00
GLOBAL_DEFINES += WITH_NO_FP=1
[arch][m68k] add more switches for cpu models
2022-04-12 17:26:33 -07:00
else ifeq ($(M68K_CPU),68010)
[platform][rosco-m68k] Add port to the Rosco M68k board Port to the really neat 68010 based board at https://rosco-m68k.com/ Port Features: -10Mhz 68010 -1MB ram -Dual UART + timer implemented as a 68c681 chip -timer running at 1Khz, UART A for console -interrupt driven RX support Some amount of extending of the 68k exceptinon code was needed to support the autovectored irqs that the 68681 uart uses. Added build system support for 68010.
2022-04-12 00:25:12 -07:00
ARCH_COMPILEFLAGS := -mcpu=68010
[fpu] have the arch layers set WITH_NO_FPU based on the cpu This will generally turn off more FPU codegen, even if its using software fallback unless the project/target/platform selects a cpu that has FPU support. This also turns off a few blocks of test code and the upcoming floating point printf if it's not present on the arch. This may break projects that were compiling for say cortex-m0 but expected FPU code to be present. If so it should be pretty easy to override it, but not going to add that yet unless it's necessary.
2025-10-08 23:41:13 -07:00
GLOBAL_DEFINES += WITH_NO_FP=1
[arch][m68k] add more switches for cpu models
2022-04-12 17:26:33 -07:00
else ifeq ($(M68K_CPU),68020)
ARCH_COMPILEFLAGS := -mcpu=68020
[fpu] have the arch layers set WITH_NO_FPU based on the cpu This will generally turn off more FPU codegen, even if its using software fallback unless the project/target/platform selects a cpu that has FPU support. This also turns off a few blocks of test code and the upcoming floating point printf if it's not present on the arch. This may break projects that were compiling for say cortex-m0 but expected FPU code to be present. If so it should be pretty easy to override it, but not going to add that yet unless it's necessary.
2025-10-08 23:41:13 -07:00
GLOBAL_DEFINES += WITH_NO_FP=1
[arch][m68k] add more switches for cpu models
2022-04-12 17:26:33 -07:00
else ifeq ($(M68K_CPU),68030)
ARCH_COMPILEFLAGS := -mcpu=68030
[platform][rosco-m68k] Add port to the Rosco M68k board Port to the really neat 68010 based board at https://rosco-m68k.com/ Port Features: -10Mhz 68010 -1MB ram -Dual UART + timer implemented as a 68c681 chip -timer running at 1Khz, UART A for console -interrupt driven RX support Some amount of extending of the 68k exceptinon code was needed to support the autovectored irqs that the 68681 uart uses. Added build system support for 68010.
2022-04-12 00:25:12 -07:00
else ifeq ($(M68K_CPU),68040)
[arch][m68k] initial port to m68k Uses the QEMU virt machine for 68k defined in qemu 6.0+. Basic support that boots, prints to the console, takes input from console, and context switches. TODO: interrupt support, timer support.
2021-06-06 19:38:45 -07:00
ARCH_COMPILEFLAGS := -mcpu=68040
[platform][rosco-m68k] Add port to the Rosco M68k board Port to the really neat 68010 based board at https://rosco-m68k.com/ Port Features: -10Mhz 68010 -1MB ram -Dual UART + timer implemented as a 68c681 chip -timer running at 1Khz, UART A for console -interrupt driven RX support Some amount of extending of the 68k exceptinon code was needed to support the autovectored irqs that the 68681 uart uses. Added build system support for 68010.
2022-04-12 00:25:12 -07:00
else
$(error add support for selected cpu $(M68K_CPU))
endif
[arch][m68k] initial port to m68k Uses the QEMU virt machine for 68k defined in qemu 6.0+. Basic support that boots, prints to the console, takes input from console, and context switches. TODO: interrupt support, timer support.
2021-06-06 19:38:45 -07:00
LIBGCC := $(shell $(TOOLCHAIN_PREFIX)gcc $(GLOBAL_COMPILEFLAGS) $(ARCH_COMPILEFLAGS) $(GLOBAL_COMPILEFLAGS) -print-libgcc-file-name)
$(info LIBGCC = $(LIBGCC))
cc-option = $(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`"; \
then echo "$(2)"; else echo "$(3)"; fi ;)
ARCH_OPTFLAGS := -O2
KERNEL_BASE ?= $(MEMBASE)
KERNEL_LOAD_OFFSET ?= 0
[platform][rosco-m68k] Add port to the Rosco M68k board Port to the really neat 68010 based board at https://rosco-m68k.com/ Port Features: -10Mhz 68010 -1MB ram -Dual UART + timer implemented as a 68c681 chip -timer running at 1Khz, UART A for console -interrupt driven RX support Some amount of extending of the 68k exceptinon code was needed to support the autovectored irqs that the 68681 uart uses. Added build system support for 68010.
2022-04-12 00:25:12 -07:00
GLOBAL_DEFINES += MEMBASE=$(MEMBASE)
GLOBAL_DEFINES += MEMSIZE=$(MEMSIZE)
GLOBAL_DEFINES += M68K_CPU=$(M68K_CPU)
GLOBAL_DEFINES += M68K_CPU_$(M68K_CPU)=1
[arch][m68k] initial port to m68k Uses the QEMU virt machine for 68k defined in qemu 6.0+. Basic support that boots, prints to the console, takes input from console, and context switches. TODO: interrupt support, timer support.
2021-06-06 19:38:45 -07:00
# potentially generated files that should be cleaned out with clean make rule
GENERATED += \
$(BUILDDIR)/linker.ld
# rules for generating the linker
$(BUILDDIR)/linker.ld: $(LOCAL_DIR)/linker.ld $(wildcard arch/*.ld) linkerscript.phony
@echo generating $@
@$(MKDIR)
$(NOECHO)sed "s/%MEMBASE%/$(MEMBASE)/;s/%MEMSIZE%/$(MEMSIZE)/;s/%KERNEL_BASE%/$(KERNEL_BASE)/;s/%KERNEL_LOAD_OFFSET%/$(KERNEL_LOAD_OFFSET)/" < $< > $@.tmp
@$(call TESTANDREPLACEFILE,$@.tmp,$@)
linkerscript.phony:
.PHONY: linkerscript.phony
LINKER_SCRIPT += $(BUILDDIR)/linker.ld
include make/module.mk
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