Add uppercase macro to build_macros.mk

This patch adds `uppercase` macro to prepare IMAGE_BLxx defines
used for conditional compilation and to prepare variables used
for defining BL source and linker file names.

This change is needed for upcoming BL images that can have names
which uses both letters and numbers.

Change-Id: I05ce9bcd0d221a54db92c0fe3ad28e9e0080ed2e

make_helpers/build_macros.mk

@@ -28,6 +28,22 @@
 # POSSIBILITY OF SUCH DAMAGE.
 #
 
+# This table is used in converting lower case to upper case.
+uppercase_table:=a,A b,B c,C d,D e,E f,F g,G h,H i,I j,J k,K l,L m,M n,N o,O p,P q,Q r,R s,S t,T u,U v,V w,W x,X y,Y z,Z
+
+# Internal macro used for converting lower case to upper case.
+#   $(1) = upper case table
+#   $(2) = String to convert
+define uppercase_internal
+$(if $(1),$$(subst $(firstword $(1)),$(call uppercase_internal,$(wordlist 2,$(words $(1)),$(1)),$(2))),$(2))
+endef
+
+# A macro for converting a string to upper case
+#   $(1) = String to convert
+define uppercase
+$(eval uppercase_result:=$(call uppercase_internal,$(uppercase_table),$(1)))$(uppercase_result)
+endef
+
 # Convenience function for adding build definitions
 # $(eval $(call add_define,FOO)) will have:
 # -DFOO if $(FOO) is empty; -DFOO=$(FOO) otherwise
@@ -134,15 +150,16 @@ endif
 # MAKE_C builds a C source file and generates the dependency file
 #   $(1) = output directory
 #   $(2) = source file (%.c)
-#   $(3) = BL stage (2, 30, 31, 32, 33)
+#   $(3) = BL stage (2, 2u, 30, 31, 32, 33)
 define MAKE_C
 
 $(eval OBJ := $(1)/$(patsubst %.c,%.o,$(notdir $(2))))
 $(eval PREREQUISITES := $(patsubst %.o,%.d,$(OBJ)))
+$(eval IMAGE := IMAGE_BL$(call uppercase,$(3)))
 
 $(OBJ): $(2)
 	@echo "  CC      $$<"
-	$$(Q)$$(CC) $$(CFLAGS) -DIMAGE_BL$(3) -c $$< -o $$@
+	$$(Q)$$(CC) $$(CFLAGS) -D$(IMAGE) -c $$< -o $$@
 
 
 $(PREREQUISITES): $(2)
@@ -160,15 +177,16 @@ endef
 # MAKE_S builds an assembly source file and generates the dependency file
 #   $(1) = output directory
 #   $(2) = assembly file (%.S)
-#   $(3) = BL stage (2, 30, 31, 32, 33)
+#   $(3) = BL stage (2, 2u, 30, 31, 32, 33)
 define MAKE_S
 
 $(eval OBJ := $(1)/$(patsubst %.S,%.o,$(notdir $(2))))
 $(eval PREREQUISITES := $(patsubst %.o,%.d,$(OBJ)))
+$(eval IMAGE := IMAGE_BL$(call uppercase,$(3)))
 
 $(OBJ): $(2)
 	@echo "  AS      $$<"
-	$$(Q)$$(AS) $$(ASFLAGS) -DIMAGE_BL$(3) -c $$< -o $$@
+	$$(Q)$$(AS) $$(ASFLAGS) -D$(IMAGE) -c $$< -o $$@
 
 $(PREREQUISITES): $(2)
 	@echo "  DEPS    $$@"
@@ -243,20 +261,22 @@ endef
 
 # MAKE_BL macro defines the targets and options to build each BL image.
 # Arguments:
-#   $(1) = BL stage (2, 30, 31, 32, 33)
+#   $(1) = BL stage (2, 2u, 30, 31, 32, 33)
 #   $(2) = In FIP (false if empty)
 define MAKE_BL
         $(eval BUILD_DIR  := ${BUILD_PLAT}/bl$(1))
-        $(eval SOURCES    := $(BL$(1)_SOURCES) $(BL_COMMON_SOURCES) $(PLAT_BL_COMMON_SOURCES))
+        $(eval BL_SOURCES := $(BL$(call uppercase,$(1))_SOURCES))
+        $(eval SOURCES    := $(BL_SOURCES) $(BL_COMMON_SOURCES) $(PLAT_BL_COMMON_SOURCES))
         $(eval OBJS       := $(addprefix $(BUILD_DIR)/,$(call SOURCES_TO_OBJS,$(SOURCES))))
         $(eval LINKERFILE := $(call IMG_LINKERFILE,$(1)))
         $(eval MAPFILE    := $(call IMG_MAPFILE,$(1)))
         $(eval ELF        := $(call IMG_ELF,$(1)))
         $(eval DUMP       := $(call IMG_DUMP,$(1)))
         $(eval BIN        := $(call IMG_BIN,$(1)))
+        $(eval BL_LINKERFILE := $(BL$(call uppercase,$(1))_LINKERFILE))
 
         $(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1)))
-        $(eval $(call MAKE_LD,$(LINKERFILE),$(BL$(1)_LINKERFILE)))
+        $(eval $(call MAKE_LD,$(LINKERFILE),$(BL_LINKERFILE)))
 
 $(BUILD_DIR):
 	$$(Q)mkdir -p "$$@"