original files of m241

vxworks-6.9/target/h/make/rules.fs

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+# rules.fs - makefile target rules for embedding a ROMFS file system image
+#
+# Copyright 2004-2005, Wind River Systems, Inc.
+#
+# modification history
+# --------------------
+# 01g,29jul05,rec  coldfire support.
+# 01f,02feb05,lei  print out a message for target ROMFS_CONTENT.
+# 01e,06oct04,h_k  added prefix "_" to romfsImage and romfsImageEnd for SH.
+#                  (SPR #102341)
+# 01d,24sep04,c_c  Allow possible previous definition of ROMFS_CONTENT to take
+# 		   precedence over the default value.
+# 01c,24sep04,c_c  Fixed a problem when ROMFS_CONTENT is set to nothing.
+# 01b,17sep04,c_c  Fixed SPR 99797.
+# 01a,22jun04,c_c  written
+#
+# DESCRIPTION
+# This file contains rules used for embedding a filesystem within vxWorks image.
+# One can change default build by overriding either:
+# ROMFS_CONTENT, which is a binary image of a ROMFS filesystem filled with 
+# files that are to be embedded on the target
+# ROMFS_DIR, which represent a directory tree on the local filesystem that
+# contains all the files that are to be embedded on the target.
+#
+# This file is included by rules.project and rules.bsp, and rely on all the 
+# rules that are defined by regular target builds (.o.s, $(CC), ...), and 
+# therefore may not work is included standalone.
+
+# We must provide different name for the generated assembly file (ROMFS_IMAGE),
+# to avoid any problem if the generated file exists in the BSP directory, and,
+# therefore could be fetched through the vpath directive.
+
+ifneq ($(PRJ_DIR),)
+
+ifeq ($(ROMFS_DIR),)
+ROMFS_DIR	= $(PRJ_DIR)/romfs
+endif
+
+ifeq ($(ROMFS_CONTENT),)
+ROMFS_CONTENT	= $(PRJ_DIR)/content.romfs
+endif
+
+ROMFS_IMAGE	= romfs_image_prj.o
+else
+
+ifeq ($(ROMFS_DIR),)
+ROMFS_DIR	= romfs
+endif
+
+ifeq ($(ROMFS_CONTENT),)
+ROMFS_CONTENT	= content.romfs
+endif
+
+ROMFS_IMAGE	= romfs_image.o
+endif
+
+ifneq ($(VX_CPU_FAMILY),sh)
+ ifeq ($(VX_CPU_FAMILY),cf)
+    # cf require leading prefix "_"
+    ROMFSIMAGE_SYM_NAME = _romfsImage
+ else
+    # everyone else
+    ROMFSIMAGE_SYM_NAME = romfsImage
+ endif
+else
+    # sh require leading prefix "_"
+    ROMFSIMAGE_SYM_NAME = _romfsImage
+endif
+
+# Be sure that if some variable have been given as WIN32 path we handle them
+# correctly
+
+override ROMFS_CONTENT	:= $(subst \,/,$(ROMFS_CONTENT))
+override ROMFS_DIR	:= $(subst \,/,$(ROMFS_DIR))
+
+###############################################################################
+#
+# Rule for rebuilding ROMFS image
+#
+#  mkromfs:  -q 		quiet mode
+#	     -n 		only create filesys if files changed in input
+#	     -o $(ROMFS_CONTENT)output file name
+# 
+
+# Dummy target to force call to MKROMFS, which will take care of updating
+# ROMFS content.
+__always_build:
+
+# Create a filesystem binary image from a directory content.
+# We do the binary image if ROMFS_DIR is really a dir. Otherwise, we create a
+# zero-length file if no file was existing before.
+
+$(ROMFS_CONTENT) : __always_build
+	@if [ -d "$(ROMFS_DIR)" ]; then \
+	$(MKROMFS) -q -n -o $@ $(ROMFS_DIR) ; \
+	else \
+	    if [ ! -f "$@" ]; then touch $@; fi; \
+	fi
+	@$(ECHO) "$(ROMFS_CONTENT) build done"
+
+# Create on object file from a filesystem image;
+# - We use an assembly file that will include the binary image. 
+# - we create two symbols that will point to the beginning and the end of this
+#   binary image.
+#
+# The configlette and the BSP init code will guess if there is an embedded file
+# system if the difference between the two symbols' address is > 0.
+
+
+$(ROMFS_IMAGE:.o=.s) : $(ROMFS_CONTENT)
+	@if [ -s "$<" ]; then \
+	$(ECHO) "\t.section \".rodata\"\n\
+\t.global	$(ROMFSIMAGE_SYM_NAME)\n\
+\t.global	$(ROMFSIMAGE_SYM_NAME)End\n\
+$(ROMFSIMAGE_SYM_NAME):\n\
+\t.incbin	\"$<\"\n\
+$(ROMFSIMAGE_SYM_NAME)End:\n" > $@; \
+	else \
+	$(ECHO) "\t.section \".rodata\"\n\
+\t.global	$(ROMFSIMAGE_SYM_NAME)\n\
+\t.global	$(ROMFSIMAGE_SYM_NAME)End\n\
+$(ROMFSIMAGE_SYM_NAME):\n\
+$(ROMFSIMAGE_SYM_NAME)End:\n" > $@;\
+	fi
+