From: Ying Zhang b40530@freescale.com
Due to the nand SPL on some board(e.g. P1022DS)has a size limit, it can not be more than 4K. So, the SPL cannot initialize the DDR with the SPD code. This patch introduces TPL to enable a loader stub that runs in the L2 SRAM, after being loaded by the code from the SPL. It initializes the DDR with the SPD or other operations.
The TPL's size is sizeable, the maximum size must not exceed the size of L2 SRAM. It initializes the DDR through SPD code, and copys final uboot image to DDR. So there are three stage uboot images: * spl_boot, * tpl_boot, * final uboot image,
This patch is on top of the patch: powerpc/p1022ds: boot from spi flash with SPL
Signed-off-by: Ying Zhang b40530@freescale.com --- Compared with the previous version, split into two separate patches. this pactch only introduce the TPL.
Makefile | 21 +++- README | 52 ++++++- arch/powerpc/config.mk | 2 + .../cpu/mpc8xxx/ddr/lc_common_dimm_params.c | 4 +- arch/powerpc/lib/Makefile | 2 + common/Makefile | 9 + common/cmd_nvedit.c | 8 +- config.mk | 32 ++++ doc/README.TPL | 69 +++++++++ drivers/mtd/nand/Makefile | 8 + drivers/mtd/nand/fsl_elbc_spl.c | 4 + drivers/serial/serial.c | 2 +- include/bootstage.h | 3 +- tpl/Makefile | 161 ++++++++++++++++++++ 14 files changed, 366 insertions(+), 11 deletions(-) create mode 100644 doc/README.TPL create mode 100644 tpl/Makefile
diff --git a/Makefile b/Makefile index 693b3f2..7954e96 100644 --- a/Makefile +++ b/Makefile @@ -118,10 +118,11 @@ 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 @@ -412,6 +413,7 @@ 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)) @@ -498,6 +500,18 @@ $(obj)u-boot-with-spl.bin: $(obj)spl/u-boot-spl.bin $(obj)u-boot.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-tpl.bin: $(obj)spl/u-boot-spl.bin $(obj)tpl/u-boot-tpl.bin \ + $(obj)u-boot.bin + $(OBJCOPY) ${OBJCFLAGS} --pad-to=$(CONFIG_SPL_PAD_TO) \ + -I binary -O binary \ + $(obj)spl/u-boot-spl.bin $(obj)spl/u-boot-spl-pad.bin + $(OBJCOPY) ${OBJCFLAGS} --pad-to=$(CONFIG_SYS_PAD_TO) \ + -I binary -O binary \ + $(obj)tpl/u-boot-tpl.bin $(obj)tpl/u-boot-tpl-pad.bin + cat $(obj)spl/u-boot-spl-pad.bin $(obj)tpl/u-boot-tpl-pad.bin \ + $(obj)u-boot.bin > $@ + rm $(obj)spl/u-boot-spl-pad.bin $(obj)tpl/u-boot-tpl-pad.bin + $(obj)u-boot-with-spl.imx: $(obj)spl/u-boot-spl.bin $(obj)u-boot.bin $(MAKE) -C $(SRCTREE)/arch/arm/imx-common \ $(OBJTREE)/u-boot-with-spl.imx @@ -622,6 +636,9 @@ $(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 tpl all + updater: $(MAKE) -C tools/updater all
@@ -870,6 +887,8 @@ 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-tpl.lds @rm -f $(obj)MLO MLO.byteswap @rm -f $(obj)SPL @rm -f $(obj)tools/xway-swap-bytes diff --git a/README b/README index 5985903..2d47816 100644 --- a/README +++ b/README @@ -2983,9 +2983,10 @@ FIT uImage format: Set for the SPL on PPC mpc8xxx targets, support for arch/powerpc/cpu/mpc8xxx/ddr/libddr.o in SPL binary.
- CONFIG_SPL_COMMON_INIT_DDR + CONFIG_COMMON_INIT_DDR Set for common ddr init with serial presence detect in - SPL binary. + SPL binary or TPL binary. + CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, @@ -3056,6 +3057,13 @@ 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_TEXT_BASE + TEXT_BASE for linking the TPL binary. + Modem Support: --------------
@@ -4090,11 +4098,51 @@ 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 previous 4k of the .text section.
+- CONFIG_SYS_MPC8XXX_INIT_DDR_SUPPORT + set for the SPL on PPC mpc8xxx targets, support for + arch/powerpc/cpu/mpc8xxx/ddr/libddr.o. + +- CONFIG_SYS_ENV_SUPPORT + Support for the environment operating. + +- CONFIG_SYS_SERIAL_SUPPORT + Support for drivers/serial/libserial.o. + +- CONFIG_SYS_LIBGENERIC_SUPPORT + Support for lib/libgeneric.o. + +- CONFIG_SYS_LIBCOMMON_SUPPORT + Support for common/libcommon.o. + +- CONFIG_SYS_I2C_SUPPORT + Support for drivers/i2c/libi2c.o. + +- CONFIG_SYS_NAND_SUPPORT + Support for drivers/mtd/nand/libnand.o. + +- CONFIG_SYS_MAX_SIZE + Maximum size of the image (text, data, rodata, and + linker lists sections), BSS excluded. + When defined, the linker checks that the actual size does + not exceed it. + +- CONFIG_SYS_PAD_TO + Image offset to which the image should be padded before appending + the image payload. By default, this is defined as + CONFIG_SYS_MAX_SIZE, or 0 if CONFIG_SYS_MAX_SIZE is undefined. + CONFIG_SYS_PAD_TO must be either 0, meaning to append the image + payload without any padding, or >= CONFIG_SYS_MAX_SIZE. + - CONFIG_ARCH_MAP_SYSMEM Generally U-Boot (and in particular the md command) uses effective address. It is therefore not necessary to regard diff --git a/arch/powerpc/config.mk b/arch/powerpc/config.mk index e32d2bf..aebb0aa 100644 --- a/arch/powerpc/config.mk +++ b/arch/powerpc/config.mk @@ -48,5 +48,7 @@ endif
# Only test once ifneq ($(CONFIG_SPL_BUILD),y) +ifneq ($(CONFIG_TPL_BUILD),y) ALL-y += checkgcc4 endif +endif diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c index 56128a7..e46100a 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/lc_common_dimm_params.c @@ -218,13 +218,13 @@ compute_lowest_common_dimm_parameters(const dimm_params_t *dimm_params, if (dimm_params[i].n_ranks) { if (dimm_params[i].registered_dimm) { temp1 = 1; -#ifndef CONFIG_SPL_BUILD +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) printf("Detected RDIMM %s\n", dimm_params[i].mpart); #endif } else { temp2 = 1; -#ifndef CONFIG_SPL_BUILD +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) printf("Detected UDIMM %s\n", dimm_params[i].mpart); #endif diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index 59c723b..c61eb06 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -59,10 +59,12 @@ SOBJS-y += reloc.o
COBJS-$(CONFIG_BAT_RW) += bat_rw.o ifndef CONFIG_SPL_BUILD +ifndef CONFIG_TPL_BUILD ifndef CONFIG_SYS_GENERIC_BOARD COBJS-y += board.o endif endif +endif COBJS-y += bootm.o COBJS-y += cache.o COBJS-y += extable.o diff --git a/common/Makefile b/common/Makefile index 3581603..b797e0c 100644 --- a/common/Makefile +++ b/common/Makefile @@ -27,6 +27,7 @@ LIB = $(obj)libcommon.o
# core ifndef CONFIG_SPL_BUILD +ifndef CONFIG_TPL_BUILD COBJS-y += main.o COBJS-y += command.o COBJS-y += exports.o @@ -204,6 +205,7 @@ COBJS-$(CONFIG_USB_KEYBOARD) += usb_kbd.o COBJS-$(CONFIG_CMD_DFU) += cmd_dfu.o COBJS-$(CONFIG_CMD_GPT) += cmd_gpt.o endif +endif
ifdef CONFIG_SPL_BUILD COBJS-$(CONFIG_ENV_IS_IN_FLASH) += env_flash.o @@ -223,6 +225,13 @@ else COBJS-y += env_nowhere.o endif endif + +ifdef CONFIG_TPL_BUILD +COBJS-$(CONFIG_SYS_ENV_SUPPORT) += env_attr.o +COBJS-$(CONFIG_SYS_ENV_SUPPORT) += env_flags.o +COBJS-$(CONFIG_SYS_ENV_SUPPORT) += env_callback.o +endif + # core command COBJS-y += cmd_nvedit.o #environment diff --git a/common/cmd_nvedit.c b/common/cmd_nvedit.c index 2478c95..d91a2ef 100644 --- a/common/cmd_nvedit.c +++ b/common/cmd_nvedit.c @@ -87,7 +87,7 @@ int get_env_id(void) return env_id; }
-#ifndef CONFIG_SPL_BUILD +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) /* * Command interface: print one or all environment variables * @@ -356,7 +356,7 @@ ulong getenv_hex(const char *varname, ulong default_val) return value; }
-#ifndef CONFIG_SPL_BUILD +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { if (argc < 2) @@ -700,7 +700,7 @@ ulong getenv_ulong(const char *name, int base, ulong default_val) return str ? simple_strtoul(str, NULL, base) : default_val; }
-#ifndef CONFIG_SPL_BUILD +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) @@ -741,7 +741,7 @@ int envmatch(uchar *s1, int i2) return -1; }
-#ifndef CONFIG_SPL_BUILD +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) static int do_env_default(cmd_tbl_t *cmdtp, int __flag, int argc, char * const argv[]) { diff --git a/config.mk b/config.mk index ddf350e..f2938f1 100644 --- a/config.mk +++ b/config.mk @@ -41,8 +41,12 @@ ifneq ($(OBJTREE),$(SRCTREE)) ifeq ($(CONFIG_SPL_BUILD),y) obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) else +ifeq ($(CONFIG_TPL_BUILD),y) +obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) +else obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) endif +endif src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/)
$(shell mkdir -p $(obj)) @@ -53,8 +57,14 @@ obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/)
$(shell mkdir -p $(obj)) else +ifeq ($(CONFIG_TPL_BUILD),y) +obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) + +$(shell mkdir -p $(obj)) +else obj := endif +endif src := endif
@@ -210,6 +220,11 @@ CPPFLAGS += -ffunction-sections -fdata-sections LDFLAGS_FINAL += --gc-sections endif
+ifeq ($(CONFIG_TPL_BUILD),y) +CPPFLAGS += -ffunction-sections -fdata-sections +LDFLAGS_FINAL += --gc-sections +endif + ifneq ($(CONFIG_SYS_TEXT_BASE),) CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) endif @@ -218,10 +233,18 @@ ifneq ($(CONFIG_SPL_TEXT_BASE),) CPPFLAGS += -DCONFIG_SPL_TEXT_BASE=$(CONFIG_SPL_TEXT_BASE) endif
+ifneq ($(CONFIG_TPL_TEXT_BASE),) +CPPFLAGS += -DCONFIG_TPL_TEXT_BASE=$(CONFIG_TPL_TEXT_BASE) +endif + ifneq ($(CONFIG_SPL_PAD_TO),) CPPFLAGS += -DCONFIG_SPL_PAD_TO=$(CONFIG_SPL_PAD_TO) endif
+ifneq ($(CONFIG_SYS_PAD_TO),) +CPPFLAGS += -DCONFIG_SYS_PAD_TO=$(CONFIG_SYS_PAD_TO) +endif + ifneq ($(CONFIG_UBOOT_PAD_TO),) CPPFLAGS += -DCONFIG_UBOOT_PAD_TO=$(CONFIG_UBOOT_PAD_TO) endif @@ -230,6 +253,10 @@ ifeq ($(CONFIG_SPL_BUILD),y) CPPFLAGS += -DCONFIG_SPL_BUILD endif
+ifeq ($(CONFIG_TPL_BUILD),y) +CPPFLAGS += -DCONFIG_TPL_BUILD +endif + # Does this architecture support generic board init? ifeq ($(__HAVE_ARCH_GENERIC_BOARD),) ifneq ($(CONFIG_SYS_GENERIC_BOARD),) @@ -294,6 +321,11 @@ ifneq ($(CONFIG_SPL_TEXT_BASE),) LDFLAGS_u-boot-spl += -Ttext $(CONFIG_SPL_TEXT_BASE) endif
+LDFLAGS_u-boot-tpl += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) +ifneq ($(CONFIG_TPL_TEXT_BASE),) +LDFLAGS_u-boot-tpl += -Ttext $(CONFIG_TPL_TEXT_BASE) +endif + # Linus' kernel sanity checking tool CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void -D__CHECK_ENDIAN__ $(CF) diff --git a/doc/README.TPL b/doc/README.TPL new file mode 100644 index 0000000..dc135af --- /dev/null +++ b/doc/README.TPL @@ -0,0 +1,69 @@ +Generic TPL framework +===================== + +Overview +-------- + +Due to the SPL on some boards(powerpc mpc85xx) has a size limit and cannot +be compatible with all the external device(e.g. DDR). So add a tertiary +program loader (TPL) to enable a loader stub that runs in the L2 SRAM, +after being loaded by the code from the SPL. It loads the final uboot image +into DDR, then jump to it to begin execution. Now, only the powerpc mpc85xx +has this requirement and will implemente it. + +Keep consistent with SPL, with this framework almost all source files for a +board can be reused. No code duplication or symlinking is necessary anymore. + +How it works +------------ + +There is a new directory TOPDIR/tpl which contains only a Makefile. +The object files are built separately for TPL and placed in this directory. +The final binaries which are generated are u-boot-tpl, u-boot-tpl.bin and +u-boot-tpl.map. + +During the TPL build a variable named CONFIG_TPL_BUILD is exported +in the make environment and also appended to CPPFLAGS with -DCONFIG_TPL_BUILD. +Source files can therefore be compiled for TPL with different settings. + +For example: + +ifeq ($(CONFIG_TPL_BUILD),y) +COBJS-y += board_tpl.o +else +COBJS-y += board.o +endif + +COBJS-$(CONFIG_TPL_BUILD) += foo.o + +#ifdef CONFIG_TPL_BUILD + foo(); +#endif + + +The building of TPL images can be with: + +#define CONFIG_TPL + +Because TPL images normally have a different text base, one has to be +configured by defining CONFIG_TPL_TEXT_BASE. The linker script has to be +defined with CONFIG_TPL_LDSCRIPT. + +To support generic U-Boot libraries and drivers in the TPL binary one can +optionally define CONFIG_SYS_XXX_SUPPORT. Currently following options +are supported: + +CONFIG_SYS_LIBCOMMON_SUPPORT (common/libcommon.o) +CONFIG_SYS_LIBDISK_SUPPORT (disk/libdisk.o) +CONFIG_SYS_I2C_SUPPORT (drivers/i2c/libi2c.o) +CONFIG_SYS_GPIO_SUPPORT (drivers/gpio/libgpio.o) +CONFIG_SYS_MMC_SUPPORT (drivers/mmc/libmmc.o) +CONFIG_SYS_SERIAL_SUPPORT (drivers/serial/libserial.o) +CONFIG_SYS_SPI_FLASH_SUPPORT (drivers/mtd/spi/libspi_flash.o) +CONFIG_SYS_SPI_SUPPORT (drivers/spi/libspi.o) +CONFIG_SYS_FAT_SUPPORT (fs/fat/libfat.o) +CONFIG_SYS_LIBGENERIC_SUPPORT (lib/libgeneric.o) +CONFIG_SYS_POWER_SUPPORT (drivers/power/libpower.o) +CONFIG_SYS_NAND_SUPPORT (drivers/mtd/nand/libnand.o) +CONFIG_SYS_DMA_SUPPORT (drivers/dma/libdma.o) +CONFIG_SYS_POST_MEM_SUPPORT (post/drivers/memory.o) diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 8821704..8b8035e 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -42,6 +42,8 @@ COBJS-$(CONFIG_SPL_NAND_BASE) += nand_base.o
else # not spl
+ifndef CONFIG_TPL_BUILD + NORMAL_DRIVERS=y
COBJS-y += nand.o @@ -51,6 +53,7 @@ COBJS-y += nand_util.o COBJS-y += nand_ecc.o COBJS-y += nand_base.o
+endif # not tpl endif # not spl
ifdef NORMAL_DRIVERS @@ -82,8 +85,13 @@ COBJS-$(CONFIG_NAND_DOCG4) += docg4.o
else # minimal SPL drivers
+ifdef CONFIG_SPL_BUILD COBJS-$(CONFIG_NAND_FSL_ELBC) += fsl_elbc_spl.o COBJS-$(CONFIG_NAND_MXC) += mxc_nand_spl.o +endif +ifdef CONFIG_TPL_BUILD +COBJS-$(CONFIG_NAND_FSL_ELBC) += fsl_elbc_spl.o +endif
endif # drivers endif # nand diff --git a/drivers/mtd/nand/fsl_elbc_spl.c b/drivers/mtd/nand/fsl_elbc_spl.c index 50ff4fe..aeb3b47 100644 --- a/drivers/mtd/nand/fsl_elbc_spl.c +++ b/drivers/mtd/nand/fsl_elbc_spl.c @@ -47,7 +47,11 @@ static void nand_wait(void) } }
+#ifdef CONFIG_SPL_BUILD static int nand_load_image(uint32_t offs, unsigned int uboot_size, void *vdst) +#else +int nand_load_image(uint32_t offs, unsigned int uboot_size, void *vdst) +#endif { fsl_lbc_t *regs = LBC_BASE_ADDR; uchar *buf = (uchar *)CONFIG_SYS_NAND_BASE; diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c index daa8003..81aca81 100644 --- a/drivers/serial/serial.c +++ b/drivers/serial/serial.c @@ -371,7 +371,7 @@ static struct serial_device *get_current(void)
/* We must have a console device */ if (!dev) { -#ifdef CONFIG_SPL_BUILD +#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_TPL_BUILD) puts("Cannot find console\n"); hang(); #else diff --git a/include/bootstage.h b/include/bootstage.h index ef07a87..1e8c492 100644 --- a/include/bootstage.h +++ b/include/bootstage.h @@ -220,7 +220,8 @@ enum bootstage_id { */ ulong timer_get_boot_us(void);
-#if !defined(CONFIG_SPL_BUILD) && !defined(USE_HOSTCC) +#if !defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) && \ + !defined(USE_HOSTCC) /* * Board code can implement show_boot_progress() if needed. * diff --git a/tpl/Makefile b/tpl/Makefile new file mode 100644 index 0000000..bb947e5 --- /dev/null +++ b/tpl/Makefile @@ -0,0 +1,161 @@ +# +# Copyright 2013 Freescale Semiconductor, Inc. +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 2 of the License, or (at your option) +# any later version. +# + +CONFIG_TPL_BUILD := y +export CONFIG_TPL_BUILD + +include $(TOPDIR)/config.mk + +# We want the final binaries in this directory +obj := $(OBJTREE)/tpl/ + +HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(SRCTREE)/board/$(VENDOR)/common/Makefile),y,n) + +ifdef CONFIG_TPL_START_S_PATH +START_PATH := $(subst ",,$(CONFIG_TPL_START_S_PATH)) +else +START_PATH := $(CPUDIR) +endif + +START := $(START_PATH)/start.o +ifeq ($(CPU),x86) +START += $(START_PATH)/start16.o +START += $(START_PATH)/resetvec.o +endif +ifeq ($(CPU),ppc4xx) +START += $(START_PATH)/resetvec.o +endif +ifeq ($(CPU),mpc85xx) +START += $(START_PATH)/resetvec.o +endif + +LIBS-y += arch/$(ARCH)/lib/lib$(ARCH).o + +LIBS-y += $(CPUDIR)/lib$(CPU).o +ifeq ($(CPU),mpc83xx) +LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o +endif +ifeq ($(CPU),mpc85xx) +LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o +ifdef CONFIG_SYS_MPC8XXX_INIT_DDR_SUPPORT +LIBS-y += arch/powerpc/cpu/mpc8xxx/ddr/libddr.o +endif +endif +ifeq ($(CPU),mpc86xx) +LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o +endif + +ifdef SOC +LIBS-y += $(CPUDIR)/$(SOC)/lib$(SOC).o +endif +LIBS-y += board/$(BOARDDIR)/lib$(BOARD).o +LIBS-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/lib$(VENDOR).o + +LIBS-$(CONFIG_SYS_LIBCOMMON_SUPPORT) += common/libcommon.o +LIBS-$(CONFIG_SYS_LIBDISK_SUPPORT) += disk/libdisk.o +LIBS-$(CONFIG_SYS_I2C_SUPPORT) += drivers/i2c/libi2c.o +LIBS-$(CONFIG_SYS_GPIO_SUPPORT) += drivers/gpio/libgpio.o +LIBS-$(CONFIG_SYS_MMC_SUPPORT) += drivers/mmc/libmmc.o +LIBS-$(CONFIG_SYS_SERIAL_SUPPORT) += drivers/serial/libserial.o +LIBS-$(CONFIG_SYS_SPI_FLASH_SUPPORT) += drivers/mtd/spi/libspi_flash.o +LIBS-$(CONFIG_SYS_SPI_SUPPORT) += drivers/spi/libspi.o +LIBS-$(CONFIG_SYS_FAT_SUPPORT) += fs/fat/libfat.o +LIBS-$(CONFIG_SYS_LIBGENERIC_SUPPORT) += lib/libgeneric.o +LIBS-$(CONFIG_SYS_POWER_SUPPORT) += drivers/power/libpower.o +LIBS-$(CONFIG_SYS_NAND_SUPPORT) += drivers/mtd/nand/libnand.o +LIBS-$(CONFIG_SYS_ONENAND_SUPPORT) += drivers/mtd/onenand/libonenand.o +LIBS-$(CONFIG_SYS_DMA_SUPPORT) += drivers/dma/libdma.o +LIBS-$(CONFIG_SYS_POST_MEM_SUPPORT) += post/drivers/memory.o +LIBS-$(CONFIG_SYS_NET_SUPPORT) += net/libnet.o +LIBS-$(CONFIG_SYS_ETH_SUPPORT) += drivers/net/libnet.o +LIBS-$(CONFIG_SYS_ETH_SUPPORT) += drivers/net/phy/libphy.o +LIBS-$(CONFIG_SYS_MUSB_NEW_SUPPORT) += drivers/usb/musb-new/libusb_musb-new.o +LIBS-$(CONFIG_SYS_USBETH_SUPPORT) += drivers/usb/gadget/libusb_gadget.o + +# Add GCC lib +ifeq ("$(USE_PRIVATE_LIBGCC)", "yes") +PLATFORM_LIBGCC = $(TPLTREE)/arch/$(ARCH)/lib/libgcc.o +PLATFORM_LIBS := $(filter-out %/libgcc.o, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC) +endif + +START := $(addprefix $(TPLTREE)/,$(START)) +LIBS := $(addprefix $(TPLTREE)/,$(sort $(LIBS-y))) + +__START := $(subst $(obj),,$(START)) +__LIBS := $(subst $(obj),,$(LIBS)) + +# Linker Script +ifdef CONFIG_SPL_LDSCRIPT +# need to strip off double quotes +LDSCRIPT := $(addprefix $(SRCTREE)/,$(subst ",,$(CONFIG_SPL_LDSCRIPT))) +endif + +ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-spl.lds +endif +ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-spl.lds +endif +ifeq ($(wildcard $(LDSCRIPT)),) + LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot-spl.lds +endif +ifeq ($(wildcard $(LDSCRIPT)),) +$(error could not find linker script) +endif + +# Special flags for CPP when processing the linker script. +# Pass the version down so we can handle backwards compatibility +# on the fly. +LDPPFLAGS += \ + -include $(TOPDIR)/include/u-boot/u-boot.lds.h \ + -include $(OBJTREE)/include/config.h \ + -DCPUDIR=$(CPUDIR) \ + $(shell $(LD) --version | \ + sed -ne 's/GNU ld version ([0-9][0-9]*).([0-9][0-9]*).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p') + +$(OBJTREE)/MLO: $(obj)u-boot-tpl.bin + $(OBJTREE)/tools/mkimage -T omapimage \ + -a $(CONFIG_TPL_TEXT_BASE) -d $< $@ + +$(OBJTREE)/MLO.byteswap: $(obj)u-boot-tpl.bin + $(OBJTREE)/tools/mkimage -T omapimage -n byteswap \ + -a $(CONFIG_TPL_TEXT_BASE) -d $< $@ + +$(OBJTREE)/TPL : $(obj)u-boot-tpl.bin depend + $(MAKE) -C $(SRCTREE)/arch/arm/imx-common $@ + +ALL-y += $(obj)u-boot-tpl.bin + +all: $(ALL-y) + +$(obj)u-boot-tpl.bin: $(obj)u-boot-tpl + $(OBJCOPY) $(OBJCFLAGS) -O binary $< $@ + +GEN_UBOOT = \ + cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $(__START) \ + --start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \ + -Map u-boot-tpl.map -o u-boot-tpl + +$(obj)u-boot-tpl: depend $(START) $(LIBS) $(obj)u-boot-spl.lds + $(GEN_UBOOT) + +$(START): depend + $(MAKE) -C $(SRCTREE)/$(START_PATH) $@ + +$(LIBS): depend + $(MAKE) -C $(SRCTREE)$(dir $(subst $(TPLTREE),,$@)) + +$(obj)u-boot-spl.lds: $(LDSCRIPT) depend + $(CPP) $(CPPFLAGS) $(LDPPFLAGS) -I$(obj). -ansi -D__ASSEMBLY__ -P - < $< > $@ + +depend: $(obj).depend +.PHONY: depend + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk