Add firmware build mode to Makefiles

firmware/Makefile

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 FWTOP := $(shell pwd)
 LIBDIR = $(FWTOP)/lib
 STUBDIR = $(FWTOP)/stub
 TESTDIR = $(FWTOP)/linktest
 BUILD_ROOT := ${BUILD}/$(shell basename ${FWTOP})
 LIBS = $(FWLIB)  # Firmware library must be self-contained
 
 # Disable rollback TPM when compiling locally, since otherwise 
 # load_kernel_test attempts to talk to the TPM.
+ifeq ($(FIRMWARE_ARCH),)
 CFLAGS += -DDISABLE_ROLLBACK_TPM
+endif
 
 INCLUDES = \
         -I$(FWTOP)/include \
         -I$(LIBDIR)/include \
         -I$(LIBDIR)/cgptlib/include \
         -I$(LIBDIR)/cryptolib/include \
-        -I$(LIBDIR)/tpm_lite/include \
-        -I$(STUBDIR)/include
+        -I$(LIBDIR)/tpm_lite/include
+
+ifeq ($(FIRMWARE_ARCH),)
+INCLUDES += -I$(STUBDIR)/include
+else
+INCLUDES += -I$(FWDIR)/arch/$(FIRMWARE_ARCH)/include
+endif
 
 # find ./lib -iname '*.c' | sort
 LIB_SRCS = \
         ./lib/cgptlib/cgptlib.c \
         ./lib/cgptlib/cgptlib_internal.c \
         ./lib/cgptlib/crc32.c \
         ./lib/cryptolib/padding.c \
         ./lib/cryptolib/rsa.c \
         ./lib/cryptolib/rsa_utility.c \
         ./lib/cryptolib/sha1.c \
@@ skipping 12 matching lines @@
 STUB_SRCS = \
         ./stub/boot_device_stub.c \
         ./stub/load_firmware_stub.c \
         ./stub/tpm_lite_stub.c \
         ./stub/utility_stub.c
 
 STUB_OBJS = $(STUB_SRCS:%.c=${BUILD_ROOT}/%.o)
 
 ALL_SRCS = ${LIB_SRCS} ${STUB_SRCS} version.c
 
+ifeq ($(FIRMWARE_ARCH),)
 test : $(STUB_OBJS) $(FWLIB) update-version
         $(CC) $(CFLAGS) $(INCLUDES) -o $(BUILD_ROOT)/a.out \
                 $(TESTDIR)/main.c $(STUB_OBJS) $(LIBS)
+else
+test : $(FWLIB)
+endif
 
 # This is executed at every make, to see if anything has changed
 update-version :
         find \( -name '*.[ch]' -o -name 'Makefile*' \) -a \! -name version.c \
                 | sort | xargs cat | md5sum | cut -c 25-32 > \
         ${BUILD_ROOT}/x.tmp && \
         echo "char* VbootVersion = \"VBOOv=$$(cat ${BUILD_ROOT}/x.tmp)\";" > \
                 ${BUILD_ROOT}/version.tmp && \
         (cmp -s ${BUILD_ROOT}/version.tmp version.c || \
                 ( echo "** Updating version.c **" &&  \
                   cp ${BUILD_ROOT}/version.tmp version.c))
 
 include ../common.mk
 
 $(FWLIB) : $(LIB_OBJS)
         rm -f $@
         ar qc $@ $^