EFI: Add build environment support for GNU EFI development.

This patch adds build environment for GNU EFI shell development.

Note that only the Makefiles used by EFI development are created in this
patch, actual OSL is not implemented and ACPICA applications are enabled in
this patch. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>

Makefile

@@ -10,7 +10,13 @@
 # code directories. This prevents collisions between different
 # compilations of the same source file with different compile options.
 #
-BUILD_DIRECTORY_PATH = "generate/unix"
 
-include generate/unix/Makefile.config
+ifeq ($(OS),efi)
-include generate/unix/Makefile.common
+	BUILD_DIRECTORY_PATH = "generate/efi"
+	include generate/efi/Makefile.config
+	include generate/efi/Makefile.common
+else
+	BUILD_DIRECTORY_PATH = "generate/unix"
+	include generate/unix/Makefile.config
+	include generate/unix/Makefile.common
+endif

generate/efi/Makefile.common

@@ -0,0 +1,61 @@
+#
+# Common make for acpica tools and utilities
+#
+
+#
+# Main rule will only generate versions that are appropriate for the running
+# OS, either 64-bit or 32-bit.
+#
+all:	$(PROGS)
+$(PROGS): FORCE
+	@cd $(BUILD_DIRECTORY_PATH)/$@; \
+	mkdir -p obj; \
+	$(MAKE) || exit "$$?"; \
+	echo "$(TARGET) version of $@:"; \
+	ls -al ../bin/$@.efi; \
+	echo "";
+
+#
+# Simple clean removes all .obj files, but leaves the executables
+# in the local bin directory
+#
+clean:	FORCE
+	@for toolname in $(PROGS); do \
+		(cd $(BUILD_DIRECTORY_PATH)/$$toolname; \
+		if [ -d "obj" ] ; then \
+			echo "Removing $$toolname:"; \
+			pwd; \
+			$(MAKE) clean; \
+			rmdir obj; \
+			echo ""; \
+		fi; \
+		); \
+	done;
+
+#
+# Very clean removes all executables and the local bin directory
+#
+veryclean:	FORCE
+	@for toolname in $(PROGS); do \
+		(cd $(BUILD_DIRECTORY_PATH)/$$toolname; \
+		if [ -d "obj" ] ; then \
+			echo "Removing $$toolname:"; \
+			pwd; \
+			$(MAKE) clean; \
+			rmdir obj; \
+			echo ""; \
+		fi; \
+		); \
+		if [ -e "$(BUILD_DIRECTORY_PATH)/bin/$$toolname" ] ; then \
+			rm $(BUILD_DIRECTORY_PATH)/bin/$$toolname; \
+		fi; \
+	done; \
+	if [ -d "bin" ] ; then \
+		rmdir bin; \
+	fi;
+
+machine:	FORCE
+	@echo "Target architecture: $(TARGET)";
+	@echo "Host architecture: $(HOST)";
+
+FORCE:

generate/efi/Makefile.config

@@ -0,0 +1,243 @@
+
+# Makefile.config
+#
+# Common configuration and setup file to generate the ACPICA tools and
+# utilities:.
+#
+# This file is included by the individual makefiles for each tool.
+#
+
+#
+# Note: This makefile is intended to be used from within the native
+# ACPICA directory structure, from under generate/efi. It specifically
+# places all object files in a generate/efi subdirectory, not within
+# the various ACPICA source directories. This prevents collisions
+# between different compilations of the same source file with different
+# compile options, and prevents pollution of the source code.
+#
+
+#
+# Configuration
+#
+# TARGET     Build target platform can be overridden on the make command
+#            line by adding the followings to the invocation:
+#            TARGET="..."
+#            Possible target (ia32, x86_64, etc.) can be used to initiate
+#            a possible cross build.
+# OPT_CFLAGS Optimization CFLAGS can be overridden on the make command
+#            line by adding the followings to the invocation:
+#            OPT_CFLAGS="..."
+# SHARED     Testing build to check if symbols are not implemented.
+#            GCC won't complain missing of symbols as our programs are
+#            compiled with -shared. This can be overridden on the make
+#            command line by adding the followings to the invocation:
+#            SHARED=false
+#            Link failures should only be seen for the _start and
+#            DivU64x32.  They are the only 2 GNU EFI functions we are
+#            using in order not to introduce architecture specific code
+#            into ACPICA.
+#
+# Notes:
+#   gcc should be version 4 or greater, otherwise some of the options
+#     used will not be recognized.
+#
+
+.SUFFIXES :
+
+#
+# Common defines
+#
+PROGS =
+HOST =   $(shell uname -m | sed s,i[3456789]86,ia32,)
+TARGET = $(shell uname -m | sed s,i[3456789]86,ia32,)
+SHARED ?= true
+OBJDIR = obj
+BINDIR = bin
+
+#
+# Main ACPICA source directories
+#
+ACPICA_SRC =            ../../../source
+ACPICA_COMMON =         $(ACPICA_SRC)/common
+ACPICA_TOOLS =          $(ACPICA_SRC)/tools
+ACPICA_OSL =            $(ACPICA_SRC)/os_specific/service_layers
+ACPICA_CORE =           $(ACPICA_SRC)/components
+ACPICA_INCLUDE =        $(ACPICA_SRC)/include
+ACPICA_DEBUGGER =       $(ACPICA_CORE)/debugger
+ACPICA_DISASSEMBLER =   $(ACPICA_CORE)/disassembler
+ACPICA_DISPATCHER =     $(ACPICA_CORE)/dispatcher
+ACPICA_EVENTS =         $(ACPICA_CORE)/events
+ACPICA_EXECUTER =       $(ACPICA_CORE)/executer
+ACPICA_HARDWARE =       $(ACPICA_CORE)/hardware
+ACPICA_NAMESPACE =      $(ACPICA_CORE)/namespace
+ACPICA_PARSER =         $(ACPICA_CORE)/parser
+ACPICA_RESOURCES =      $(ACPICA_CORE)/resources
+ACPICA_TABLES =         $(ACPICA_CORE)/tables
+ACPICA_UTILITIES =      $(ACPICA_CORE)/utilities
+
+#
+# ACPICA tool and utility source directories
+#
+
+#
+# Common ACPICA header files
+#
+ACPICA_HEADERS = \
+	$(wildcard $(ACPICA_INCLUDE)/*.h) \
+	$(wildcard $(ACPICA_INCLUDE)/platform/*.h)
+
+#
+# GCC configuration
+#
+CC =        gcc
+LD =        ld
+OBJCOPY =   objcopy
+
+CFLAGS  = \
+	-std=c99\
+	-U__linux__\
+	-U_LINUX\
+	-D_GNU_SOURCE\
+	-fno-stack-protector\
+	-fno-strict-aliasing\
+	-fpic\
+	-fshort-wchar\
+	-I$(ACPICA_INCLUDE)
+LDFLAGS	= \
+	-nostdlib\
+	-znocombreloc\
+	-Bsymbolic
+ifeq ($(strip $(SHARED)), true)
+LDFLAGS	+= \
+	-shared
+endif
+LIBS    = \
+	$(shell $(CC) -print-libgcc-file-name)
+OBJCOPYFLAGS = \
+	-j .text\
+	-j .sdata\
+	-j .data\
+	-j .dynamic\
+	-j .dynsym\
+	-j .rel\
+	-j .rela\
+	-j .reloc\
+	--target=efi-app-$(TARGET)
+
+#
+# Common compiler flags
+# The _GNU_SOURCE symbol is required for many hosts.
+#
+OPT_CFLAGS ?= $(CWARNINGFLAGS)
+
+#
+# Optionally disable optimizations. Optimization causes problems on
+# some compilers such as gcc 4.4
+#
+ifneq ($(NOOPT),TRUE)
+OPT_CFLAGS += -O2 -D_FORTIFY_SOURCE=2
+endif
+
+#
+# Common compiler warning flags. The warning flags in addition
+# to -Wall are not automatically included in -Wall.
+#
+CWARNINGFLAGS = \
+	-Wall\
+	-Wbad-function-cast\
+	-Wdeclaration-after-statement\
+	-Werror\
+	-Wformat=2\
+	-Wmissing-declarations\
+	-Wmissing-prototypes\
+	-Wstrict-aliasing=0\
+	-Wswitch-default\
+	-Wpointer-arith\
+	-Wempty-body\
+	-Wlogical-op\
+	-Wmissing-parameter-type\
+	-Wold-style-declaration\
+	-Wtype-limits
+#
+# Extra warning flags (for possible future use)
+#
+#CWARNINGFLAGS += \
+#	-Wcast-qual\
+#	-Wconversion\
+#	-Wshadow\
+#	-Wstrict-prototypes\
+#	-Wundef\
+
+CFLAGS += $(OPT_CFLAGS)
+
+#
+# EFI environment definitions
+#
+EFIINC =    /usr/include/efi
+
+ifeq ($(TARGET),ia32)
+
+CFLAGS +=   -DACPI_MACHINE_WIDTH=32
+ifeq ($(HOST),x86_64)
+EFILIB =    /usr/lib32
+CFLAGS +=   -m32
+LDFLAGS	+=  -melf_i386
+else # HOST eq ia32
+EFILIB =    /usr/lib
+endif
+
+else # TARGET eq x86_64
+
+CFLAGS += \
+	-DEFI_FUNCTION_WRAPPER\
+	-DACPI_MACHINE_WIDTH=64
+ifeq ($(HOST),ia32)
+EFILIB =    /usr/lib64
+CFLAGS +=   -m64
+LDFLAGS	+=  -melf_x86_64
+else # HOST eq x86_64
+EFILIB =    /usr/lib
+endif
+
+endif
+
+CFLAGS += \
+	-I$(EFIINC)\
+	-I$(EFIINC)/$(TARGET)\
+	-I$(EFIINC)/protocol
+LDFLAGS	+= \
+	-T $(EFILIB)/elf_$(TARGET)_efi.lds\
+	-L$(EFILIB)\
+	$(EFILIB)/crt0-efi-$(TARGET).o
+LIBS += \
+	-lefi\
+	-lgnuefi\
+
+#
+# Bison/Flex configuration
+#
+# -y: act like yacc
+#
+# -i: generate case insensitive scanner
+# -s: suppress default rule, abort on unknown input
+#
+# Optional for Bison/yacc:
+# -v: verbose, produces a .output file
+# -d: produces the defines header file
+#
+YACC=       bison
+YFLAGS +=   -y
+
+LEX=        flex
+LFLAGS +=   -i -s
+
+#
+# Command definitions
+#
+COMPILEOBJ =    $(CC) -c $(CFLAGS) -o $@ $<
+LINKPROG =      $(LD) $(LDFLAGS) $(OBJECTS) -o $@ $(LIBS)
+OBJCOPYPROG =   $(OBJCOPY) $(OBJCOPYFLAGS) $< $@
+COPYPROG = \
+	@mkdir -p ../$(BINDIR); \
+	cp -f $< ../$(BINDIR); \
+	echo "Copied $< to $@";

generate/efi/Makefile.rules

@@ -0,0 +1,26 @@
+#
+# Common rules for generation of ACPICA utilities
+#
+# BIN/PROG.efi - Copies the utility to the local bin directory
+# PROG.efi - Converts the shared library into EFI executable
+# PROG.so - Builds the utility into a shared library
+#
+
+
+../$(BINDIR)/$(PROG).efi : $(PROG).efi
+	$(COPYPROG)
+
+$(PROG).efi : $(PROG).so
+	$(OBJCOPYPROG)
+
+$(PROG).so : $(OBJECTS)
+	$(LINKPROG)
+
+$(OBJDIR)/%.o : %.c $(HEADERS) $(ACPICA_HEADERS)
+	$(COMPILEOBJ)
+
+clean :
+	rm -f ../$(BINDIR)/$(PROG).efi
+	rm -f $(PROG).efi
+	rm -f $(PROG).so
+	rm -f $(OBJECTS)