hwstub: split target specific code from the common part

Completely rewrite the Mafile, properly put the usb driver in its
own file and the target specific files in a subdirectory.

Change-Id: Iaeee0128e021d5dad76b4d6035a63e33e2d946c1

1 files changed, 49 insertions, 0 deletions

diff --git a/utils/hwstub/stub/hwstub.make b/utils/hwstub/stub/hwstub.make
new file mode 100644
index 0000000000..b46a2736ef
--- /dev/null
+++ b/utils/hwstub/stub/hwstub.make
@@ -0,0 +1,49 @@
+INCLUDES+=-I$(ROOT_DIR)
+LINKER_FILE=$(ROOT_DIR)/hwstub.lds
+TMP_LDS=$(BUILD_DIR)/link.lds
+TMP_MAP=$(BUILD_DIR)/hwstub.map
+CFLAGS=$(GCCOPTS) $(DEFINES) -W -Wall -Wundef -O -nostdlib -ffreestanding -Wstrict-prototypes -pipe -std=gnu99 -fomit-frame-pointer -Wno-pointer-sign -Wno-override-init $(INCLUDES)
+ASFLAGS=$(CFLAGS) -D__ASSEMBLER__
+LDFLAGS=-lgcc -Os -nostdlib -T$(TMP_LDS) -Wl,-Map,$(TMP_MAP) $(INCLUDES) -L$(BUILD_DIR)
+
+SRC:=$(shell cat $(ROOT_DIR)/SOURCES | $(CC) $(INCLUDES) \
+    $(DEFINES) -E -P -include "config.h" - 2>/dev/null \
+    | grep -v "^\#")
+SRC:=$(foreach src,$(SRC),$(BUILD_DIR)/$(src))
+OBJ=$(SRC:.c=.o)
+OBJ:=$(OBJ:.S=.o)
+OBJ_EXCEPT_CRT0=$(filter-out $(BUILD_DIR)/crt0.o,$(OBJ))
+EXEC_ELF=$(BUILD_DIR)/hwstub.elf
+DEPS=$(foreach obj,$(OBJ),$(obj).d)
+
+EXEC=$(EXEC_ELF)
+
+SILENT?=@
+PRINTS=$(SILENT)$(call info,$(1))
+
+all: $(EXEC)
+
+# pull in dependency info for *existing* .o files
+-include $(DEPS)
+
+$(BUILD_DIR)/%.o: $(ROOT_DIR)/%.c
+        $(SILENT)mkdir -p $(dir $@)
+        $(call PRINTS,CC $(<F))
+        $(SILENT)$(CC) $(CFLAGS) -c -o $@ $<
+        $(SILENT)$(CC) -MM $(CFLAGS) $< -MT $@ > $@.d
+
+$(BUILD_DIR)/%.o: $(ROOT_DIR)/%.S
+        $(call PRINTS,AS $(<F))
+        $(SILENT)mkdir -p $(dir $@)
+        $(SILENT)$(AS) $(ASFLAGS) -c -o $@ $<
+
+$(TMP_LDS): $(LINKER_FILE)
+        $(call PRINTS,PP $(<F))
+        $(SILENT)$(CC) $(CFLAGS) -E -x c - < $< | sed '/#/d' > $@
+
+$(EXEC_ELF): $(OBJ) $(TMP_LDS)
+        $(call PRINTS,LD $(@F))
+        $(SILENT)$(LD) $(LDFLAGS) -o $@ $(OBJ_EXCEPT_CRT0)
+
+clean:
+        $(SILENT)rm -rf $(OBJ) $(DEPS) $(EXEC) $(TMP_LDS) $(TMP_MAP)