diff options
| -rw-r--r-- | Makefile | 50 | ||||
| -rw-r--r-- | README | 16 | ||||
| -rw-r--r-- | config.mk | 30 | ||||
| -rw-r--r-- | doc/README.TPL | 45 | ||||
| -rw-r--r-- | spl/Makefile | 20 |
5 files changed, 147 insertions, 14 deletions
@@ -102,10 +102,11 @@ endif # ifneq ($(BUILD_DIR),) OBJTREE := $(if $(BUILD_DIR),$(BUILD_DIR),$(CURDIR)) SPLTREE := $(OBJTREE)/spl +TPLTREE := $(OBJTREE)/tpl SRCTREE := $(CURDIR) TOPDIR := $(SRCTREE) LNDIR := $(OBJTREE) -export TOPDIR SRCTREE OBJTREE SPLTREE +export TOPDIR SRCTREE OBJTREE SPLTREE TPLTREE MKCONFIG := $(SRCTREE)/mkconfig export MKCONFIG @@ -397,6 +398,7 @@ ALL-y += $(obj)u-boot.srec $(obj)u-boot.bin $(obj)System.map ALL-$(CONFIG_NAND_U_BOOT) += $(obj)u-boot-nand.bin ALL-$(CONFIG_ONENAND_U_BOOT) += $(obj)u-boot-onenand.bin ALL-$(CONFIG_SPL) += $(obj)spl/u-boot-spl.bin +ALL-$(CONFIG_TPL) += $(obj)tpl/u-boot-tpl.bin ALL-$(CONFIG_OF_SEPARATE) += $(obj)u-boot.dtb $(obj)u-boot-dtb.bin ifneq ($(CONFIG_SPL_TARGET),) ALL-$(CONFIG_SPL) += $(obj)$(subst ",,$(CONFIG_SPL_TARGET)) @@ -475,13 +477,25 @@ $(obj)u-boot.sha1: $(obj)u-boot.bin $(obj)u-boot.dis: $(obj)u-boot $(OBJDUMP) -d $< > $@ +# $@ is output, $(1) and $(2) are inputs, $(3) is padded intermediate, +# $(4) is pad-to +SPL_PAD_APPEND = \ + $(OBJCOPY) ${OBJCFLAGS} --pad-to=$(4) -I binary -O binary \ + $(1) $(obj)$(3); \ + cat $(obj)$(3) $(obj)$(2) > $@; \ + rm $(obj)$(3) +ifdef CONFIG_TPL +SPL_PAYLOAD := $(obj)tpl/u-boot-with-tpl.bin +else +SPL_PAYLOAD := $(obj)u-boot.bin +endif -$(obj)u-boot-with-spl.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin - $(OBJCOPY) ${OBJCFLAGS} --pad-to=$(CONFIG_SPL_PAD_TO) \ - -I binary -O binary $< $(obj)spl/u-boot-spl-pad.bin - cat $(obj)spl/u-boot-spl-pad.bin $(obj)u-boot.bin > $@ - rm $(obj)spl/u-boot-spl-pad.bin +$(obj)u-boot-with-spl.bin: $(obj)spl/u-boot-spl.bin $(SPL_PAYLOAD) + $(call SPL_PAD_APPEND,$<,$(SPL_PAYLOAD),spl/u-boot-spl-pad.bin,$(CONFIG_SPL_PAD_TO)) + +$(obj)tpl/u-boot-with-tpl.bin: $(obj)tpl/u-boot-tpl.bin $(obj)u-boot.bin + $(call SPL_PAD_APPEND,$<,u-boot.bin,tpl/u-boot-tpl-pad.bin,$(CONFIG_TPL_PAD_TO)) $(obj)u-boot-with-spl.imx: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin $(MAKE) -C $(SRCTREE)/arch/arm/imx-common \ @@ -607,6 +621,9 @@ $(obj)u-boot-nand.bin: nand_spl $(obj)u-boot.bin $(obj)spl/u-boot-spl.bin: $(SUBDIR_TOOLS) depend $(MAKE) -C spl all +$(obj)tpl/u-boot-tpl.bin: $(SUBDIR_TOOLS) depend + $(MAKE) -C spl all CONFIG_TPL_BUILD=y + updater: $(MAKE) -C tools/updater all @@ -614,6 +631,7 @@ updater: # parallel sub-makes creating .depend files simultaneously. depend dep: $(TIMESTAMP_FILE) $(VERSION_FILE) \ $(obj)include/spl-autoconf.mk \ + $(obj)include/tpl-autoconf.mk \ $(obj)include/autoconf.mk \ $(obj)include/generated/generic-asm-offsets.h \ $(obj)include/generated/asm-offsets.h @@ -696,6 +714,15 @@ $(obj)include/autoconf.mk: $(obj)include/config.h mv $@.tmp $@ # Auto-generate the spl-autoconf.mk file (which is included by all makefiles for SPL) +$(obj)include/tpl-autoconf.mk: $(obj)include/config.h + @$(XECHO) Generating $@ ; \ + set -e ; \ + : Extract the config macros ; \ + $(CPP) $(CFLAGS) -DCONFIG_TPL_BUILD -DCONFIG_SPL_BUILD\ + -DDO_DEPS_ONLY -dM include/common.h | \ + sed -n -f tools/scripts/define2mk.sed > $@.tmp && \ + mv $@.tmp $@ + $(obj)include/spl-autoconf.mk: $(obj)include/config.h @$(XECHO) Generating $@ ; \ set -e ; \ @@ -706,12 +733,14 @@ $(obj)include/spl-autoconf.mk: $(obj)include/config.h $(obj)include/generated/generic-asm-offsets.h: $(obj)include/autoconf.mk.dep \ $(obj)include/spl-autoconf.mk \ + $(obj)include/tpl-autoconf.mk \ $(obj)lib/asm-offsets.s @$(XECHO) Generating $@ tools/scripts/make-asm-offsets $(obj)lib/asm-offsets.s $@ $(obj)lib/asm-offsets.s: $(obj)include/autoconf.mk.dep \ $(obj)include/spl-autoconf.mk \ + $(obj)include/tpl-autoconf.mk \ $(src)lib/asm-offsets.c @mkdir -p $(obj)lib $(CC) -DDO_DEPS_ONLY \ @@ -720,12 +749,14 @@ $(obj)lib/asm-offsets.s: $(obj)include/autoconf.mk.dep \ $(obj)include/generated/asm-offsets.h: $(obj)include/autoconf.mk.dep \ $(obj)include/spl-autoconf.mk \ + $(obj)include/tpl-autoconf.mk \ $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s @$(XECHO) Generating $@ tools/scripts/make-asm-offsets $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s $@ $(obj)$(CPUDIR)/$(SOC)/asm-offsets.s: $(obj)include/autoconf.mk.dep \ - $(obj)include/spl-autoconf.mk + $(obj)include/spl-autoconf.mk \ + $(obj)include/tpl-autoconf.mk @mkdir -p $(obj)$(CPUDIR)/$(SOC) if [ -f $(src)$(CPUDIR)/$(SOC)/asm-offsets.c ];then \ $(CC) -DDO_DEPS_ONLY \ @@ -798,7 +829,8 @@ unconfig: @rm -f $(obj)include/config.h $(obj)include/config.mk \ $(obj)board/*/config.tmp $(obj)board/*/*/config.tmp \ $(obj)include/autoconf.mk $(obj)include/autoconf.mk.dep \ - $(obj)include/spl-autoconf.mk + $(obj)include/spl-autoconf.mk \ + $(obj)include/tpl-autoconf.mk %_config:: unconfig @$(MKCONFIG) -A $(@:_config=) @@ -884,6 +916,8 @@ clobber: tidy @rm -f $(obj)nand_spl/{u-boot-nand_spl.lds,u-boot-spl,u-boot-spl.map} @rm -f $(obj)spl/{u-boot-spl,u-boot-spl.bin,u-boot-spl.map} @rm -f $(obj)spl/u-boot-spl.lds + @rm -f $(obj)tpl/{u-boot-tpl,u-boot-tpl.bin,u-boot-tpl.map} + @rm -f $(obj)tpl/u-boot-spl.lds @rm -f $(obj)MLO MLO.byteswap @rm -f $(obj)SPL @rm -f $(obj)tools/xway-swap-bytes @@ -3167,6 +3167,17 @@ FIT uImage format: option to re-enable it. This will affect the output of the bootm command when booting a FIT image. +- TPL framework + CONFIG_TPL + Enable building of TPL globally. + + CONFIG_TPL_PAD_TO + Image offset to which the TPL should be padded before appending + the TPL payload. By default, this is defined as + CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. + CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL + payload without any padding, or >= CONFIG_SPL_MAX_SIZE. + Modem Support: -------------- @@ -4204,6 +4215,11 @@ Low Level (hardware related) configuration options: that is executed before the actual U-Boot. E.g. when compiling a NAND SPL. +- CONFIG_TPL_BUILD + Modifies the behaviour of start.S when compiling a loader + that is executed after the SPL and before the actual U-Boot. + It is loaded by the SPL. + - CONFIG_SYS_MPC85XX_NO_RESETVEC Only for 85xx systems. If this variable is specified, the section .resetvec is not kept and the section .bootpg is placed in the @@ -13,6 +13,12 @@ SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ export SHELL +ifeq ($(CONFIG_TPL_BUILD),y) +SPL_BIN := u-boot-tpl +else +SPL_BIN := u-boot-spl +endif + ifeq ($(CURDIR),$(SRCTREE)) dir := else @@ -22,7 +28,11 @@ endif ifneq ($(OBJTREE),$(SRCTREE)) # Create object files for SPL in a separate directory ifeq ($(CONFIG_SPL_BUILD),y) +ifeq ($(CONFIG_TPL_BUILD),y) +obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) +else obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) +endif else obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) endif @@ -32,8 +42,12 @@ $(shell mkdir -p $(obj)) else # Create object files for SPL in a separate directory ifeq ($(CONFIG_SPL_BUILD),y) +ifeq ($(CONFIG_TPL_BUILD),y) +obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) +else obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) +endif $(shell mkdir -p $(obj)) else obj := @@ -145,6 +159,10 @@ CHECK = sparse ######################################################################### # Load generated board configuration +ifeq ($(CONFIG_TPL_BUILD),y) +# Include TPL autoconf +sinclude $(OBJTREE)/include/tpl-autoconf.mk +else ifeq ($(CONFIG_SPL_BUILD),y) # Include SPL autoconf sinclude $(OBJTREE)/include/spl-autoconf.mk @@ -152,6 +170,7 @@ else # Include normal autoconf sinclude $(OBJTREE)/include/autoconf.mk endif +endif sinclude $(OBJTREE)/include/config.mk # Some architecture config.mk files need to know what CPUDIR is set to, @@ -221,12 +240,19 @@ ifneq ($(CONFIG_SPL_PAD_TO),) CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO) endif +ifneq ($(CONFIG_TPL_PAD_TO),) +CPPFLAGS += -DCONFIG_TPL_PAD_TO=$(CONFIG_TPL_PAD_TO) +endif + ifneq ($(CONFIG_UBOOT_PAD_TO),) CPPFLAGS += -DCONFIG_UBOOT_PAD_TO=$(CONFIG_UBOOT_PAD_TO) endif ifeq ($(CONFIG_SPL_BUILD),y) CPPFLAGS += -DCONFIG_SPL_BUILD +ifeq ($(CONFIG_TPL_BUILD),y) +CPPFLAGS += -DCONFIG_TPL_BUILD +endif endif # Does this architecture support generic board init? @@ -298,9 +324,9 @@ ifneq ($(CONFIG_SYS_TEXT_BASE),) LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) endif -LDFLAGS_u-boot-spl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) +LDFLAGS_$(SPL_BIN) += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) ifneq ($(CONFIG_SPL_TEXT_BASE),) -LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE) +LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) endif # Linus' kernel sanity checking tool diff --git a/doc/README.TPL b/doc/README.TPL new file mode 100644 index 0000000..1df03b9 --- /dev/null +++ b/doc/README.TPL @@ -0,0 +1,45 @@ +Generic TPL framework +===================== + +Overview +-------- + +TPL---Third Program Loader. + +Due to the SPL on some boards(powerpc mpc85xx) has a size limit and cannot +be compatible with all the external device(e.g. DDR). So add a tertiary +program loader (TPL) to enable a loader stub loaded by the code from the +SPL. It loads the final uboot image into DDR, then jump to it to begin +execution. Now, only the powerpc mpc85xx has this requirement and will +implemente it. + +Keep consistent with SPL, with this framework almost all source files for a +board can be reused. No code duplication or symlinking is necessary anymore. + +How it works +------------ + +There has been a directory TOPDIR/spl which contains only a Makefile. The +Makefile is shared by SPL and TPL. + +The object files are built separately for SPL/TPL and placed in the +directory spl/tpl. The final binaries which are generated are +u-boot-{spl|tpl}, u-boot-{spl|tpl}.bin and u-boot-{spl|tpl}.map. + +During the TPL build a variable named CONFIG_TPL_BUILD is exported in the +make environment and also appended to CPPFLAGS with -DCONFIG_TPL_BUILD. + +The SPL options are shared by SPL and TPL, the board config file should +determine which SPL options to choose based on whether CONFIG_TPL_BUILD +is set. Source files can be compiled for TPL with options choosed in the +board config file. + +For example: + +spl/Makefile: +LIBS-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/libcommon.o + +CONFIG_SPL_LIBCOMMON_SUPPORT is defined in board config file: +#ifdef CONFIG_TPL_BUILD +#define CONFIG_SPL_LIBCOMMON_SUPPORT +#endif diff --git a/spl/Makefile b/spl/Makefile index a9a8564..339e5e8 100644 --- a/spl/Makefile +++ b/spl/Makefile @@ -17,10 +17,22 @@ CONFIG_SPL_BUILD := y export CONFIG_SPL_BUILD +ifeq ($(CONFIG_TPL_BUILD),y) +export CONFIG_TPL_BUILD +SPL_BIN := u-boot-tpl +else +SPL_BIN := u-boot-spl +endif + include $(TOPDIR)/config.mk # We want the final binaries in this directory +ifeq ($(CONFIG_TPL_BUILD),y) +obj := $(OBJTREE)/tpl/ +SPLTREE := $(TPLTREE) +else obj := $(OBJTREE)/spl/ +endif HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(SRCTREE)/board/$(VENDOR)/common/Makefile),y,n) @@ -161,7 +173,7 @@ $(OBJTREE)/MLO.byteswap: $(obj)u-boot-spl.bin $(OBJTREE)/SPL : $(obj)u-boot-spl.bin depend $(MAKE) -C $(SRCTREE)/arch/arm/imx-common $@ -ALL-y += $(obj)u-boot-spl.bin +ALL-y += $(obj)$(SPL_BIN).bin ifdef CONFIG_SAMSUNG ALL-y += $(obj)$(BOARD)-spl.bin @@ -175,15 +187,15 @@ $(obj)$(BOARD)-spl.bin: $(obj)u-boot-spl.bin $(obj)u-boot-spl.bin $(obj)$(BOARD)-spl.bin endif -$(obj)u-boot-spl.bin: $(obj)u-boot-spl +$(obj)$(SPL_BIN).bin: $(obj)$(SPL_BIN) $(OBJCOPY) $(OBJCFLAGS) -O binary $< $@ GEN_UBOOT = \ cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $(__START) \ --start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \ - -Map u-boot-spl.map -o u-boot-spl + -Map $(SPL_BIN).map -o $(SPL_BIN) -$(obj)u-boot-spl: depend $(START) $(LIBS) $(obj)u-boot-spl.lds +$(obj)$(SPL_BIN): depend $(START) $(LIBS) $(obj)u-boot-spl.lds $(GEN_UBOOT) $(START): depend |