minimal: New port, intended to represent minimal working code.

Unlike bare-arm, which is mostly intended to show raw interpreter size,
without library and support code dependencies. This port is intended to
be a better base to start new ports, and also will include emulation
build to allow debug some aspects of embedded targets on POSIX systems.

This initial commit is verbatim copy of bare-arm code.

1 files changed, 48 insertions, 0 deletions

diff --git a/minimal/Makefile b/minimal/Makefile
new file mode 100644
index 000000000..a59bb9f89
--- /dev/null
+++ b/minimal/Makefile
@@ -0,0 +1,48 @@
+include ../py/mkenv.mk
+
+# qstr definitions (must come before including py.mk)
+QSTR_DEFS = qstrdefsport.h
+
+# include py core make definitions
+include ../py/py.mk
+
+CROSS_COMPILE = arm-none-eabi-
+
+INC =  -I.
+INC += -I..
+INC += -I$(BUILD)
+
+CFLAGS_CORTEX_M4 = -mthumb -mtune=cortex-m4 -mabi=aapcs-linux -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion
+CFLAGS = $(INC) -Wall -Werror -ansi -std=gnu99 -nostdlib $(CFLAGS_CORTEX_M4) $(COPT)
+
+#Debugging/Optimization
+ifeq ($(DEBUG), 1)
+CFLAGS += -O0 -ggdb
+else
+CFLAGS += -Os -DNDEBUG
+endif
+
+LDFLAGS = -nostdlib -T stm32f405.ld -Map=$@.map --cref
+LIBS =
+
+SRC_C = \
+	main.c \
+#	printf.c \
+	string0.c \
+	malloc0.c \
+	gccollect.c \
+
+SRC_S = \
+#	startup_stm32f40xx.s \
+	gchelper.s \
+
+OBJ = $(PY_O) $(addprefix $(BUILD)/, $(SRC_C:.c=.o) $(SRC_S:.s=.o))
+
+all: $(BUILD)/firmware.elf
+
+$(BUILD)/firmware.elf: $(OBJ)
+	$(ECHO) "LINK $@"
+	$(Q)$(LD) $(LDFLAGS) -o $@ $(OBJ) $(LIBS)
+	$(Q)$(SIZE) $@
+
+include ../py/mkrules.mk