diff options
| author | Soby Mathew <soby.mathew@arm.com> | 2014-07-16 15:12:21 +0100 |
|---|---|---|
| committer | Soby Mathew <soby.mathew@arm.com> | 2014-08-11 14:45:08 +0100 |
| commit | 27905d0a10ceceeb9a98cfdaee3ceef69bf7b52c (patch) | |
| tree | 385dcfe71c146aa0039e0d0040d97b21a5315d59 | |
| parent | c1efc4c0666b95912b54e079de484d8c2249e045 (diff) | |
Add compilation macro for each BL stage
This patch defines a compile time macro for each boot loader stage
which allows compilation of code only for a specific stage.
Change-Id: I3a4068404cd3dc26d652556ca9ca7afea8dd28ef
| -rw-r--r-- | Makefile | 10 | ||||
| -rw-r--r-- | docs/firmware-design.md | 5 |
2 files changed, 10 insertions, 5 deletions
@@ -300,7 +300,7 @@ $(eval PREREQUISITES := $(patsubst %.o,%.d,$(OBJ))) $(OBJ) : $(2) @echo " CC $$<" - $$(Q)$$(CC) $$(CFLAGS) -c $$< -o $$@ + $$(Q)$$(CC) $$(CFLAGS) -DIMAGE_BL$(3) -c $$< -o $$@ $(PREREQUISITES) : $(2) @@ -322,7 +322,7 @@ $(eval PREREQUISITES := $(patsubst %.o,%.d,$(OBJ))) $(OBJ) : $(2) @echo " AS $$<" - $$(Q)$$(AS) $$(ASFLAGS) -c $$< -o $$@ + $$(Q)$$(AS) $$(ASFLAGS) -DIMAGE_BL$(3) -c $$< -o $$@ $(PREREQUISITES) : $(2) @echo " DEPS $$@" @@ -359,11 +359,11 @@ endef define MAKE_OBJS $(eval C_OBJS := $(filter %.c,$(2))) $(eval REMAIN := $(filter-out %.c,$(2))) - $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj)))) + $(eval $(foreach obj,$(C_OBJS),$(call MAKE_C,$(1),$(obj),$(3)))) $(eval S_OBJS := $(filter %.S,$(REMAIN))) $(eval REMAIN := $(filter-out %.S,$(REMAIN))) - $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj)))) + $(eval $(foreach obj,$(S_OBJS),$(call MAKE_S,$(1),$(obj),$(3)))) $(and $(REMAIN),$(error Unexpected source files present: $(REMAIN))) endef @@ -387,7 +387,7 @@ define MAKE_BL $(eval DUMP := $(BUILD_DIR)/bl$(1).dump) $(eval BIN := $(BUILD_PLAT)/bl$(1).bin) - $(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES))) + $(eval $(call MAKE_OBJS,$(BUILD_DIR),$(SOURCES),$(1))) $(eval $(call MAKE_LD,$(LINKERFILE),$(BL$(1)_LINKERFILE))) $(BUILD_DIR) : diff --git a/docs/firmware-design.md b/docs/firmware-design.md index 3203a524..23cae19e 100644 --- a/docs/firmware-design.md +++ b/docs/firmware-design.md @@ -1226,6 +1226,11 @@ categories. Based upon the above, the code layout looks like this: lib Yes Yes Yes services No No Yes +The build system provides a non configurable build option IMAGE_BLx for each +boot loader stage (where x = BL stage). e.g. for BL1 , IMAGE_BL1 will be +defined by the build system. This enables the Trusted Firmware to compile +certain code only for specific boot loader stages + All assembler files have the `.S` extension. The linker source files for each boot stage have the extension `.ld.S`. These are processed by GCC to create the linker scripts which have the extension `.ld`. |