bb0dc1084f
The code from the internal on-chip ROM. It loads the final uboot image into DDR, then jump to it to begin execution. The SPL'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 two stage uboot images: * spl_boot, 96KB size. The env variables are copied to L2 SRAM, so that ddr spd code can get the interleaving mode setting in env. It loads final uboot image from offset 96KB. * final uboot image, size is variable depends on the functions enabled. Signed-off-by: Ying Zhang <b40530@freescale.com> Acked-by: York Sun <yorksun@freescale.com>
203 lines
5.8 KiB
Makefile
203 lines
5.8 KiB
Makefile
#
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# (C) Copyright 2000-2011
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# (C) Copyright 2011
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# Daniel Schwierzeck, daniel.schwierzeck@googlemail.com.
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#
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# (C) Copyright 2011
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# Texas Instruments Incorporated - http://www.ti.com/
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# Aneesh V <aneesh@ti.com>
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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# Based on top-level Makefile.
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#
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CONFIG_SPL_BUILD := y
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export CONFIG_SPL_BUILD
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include $(TOPDIR)/config.mk
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# We want the final binaries in this directory
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obj := $(OBJTREE)/spl/
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HAVE_VENDOR_COMMON_LIB = $(if $(wildcard $(SRCTREE)/board/$(VENDOR)/common/Makefile),y,n)
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ifdef CONFIG_SPL_START_S_PATH
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START_PATH := $(subst ",,$(CONFIG_SPL_START_S_PATH))
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else
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START_PATH := $(CPUDIR)
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endif
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START := $(START_PATH)/start.o
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ifeq ($(CPU),x86)
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START += $(START_PATH)/start16.o
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START += $(START_PATH)/resetvec.o
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endif
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ifeq ($(CPU),ppc4xx)
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START += $(START_PATH)/resetvec.o
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endif
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ifeq ($(CPU),mpc85xx)
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START += $(START_PATH)/resetvec.o
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endif
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LIBS-y += arch/$(ARCH)/lib/lib$(ARCH).o
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LIBS-y += $(CPUDIR)/lib$(CPU).o
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ifeq ($(CPU),mpc83xx)
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LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o
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endif
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ifeq ($(CPU),mpc85xx)
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LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o
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ifdef CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT
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LIBS-y += arch/powerpc/cpu/mpc8xxx/ddr/libddr.o
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endif
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endif
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ifeq ($(CPU),mpc86xx)
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LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o
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endif
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ifdef SOC
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LIBS-y += $(CPUDIR)/$(SOC)/lib$(SOC).o
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endif
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LIBS-y += board/$(BOARDDIR)/lib$(BOARD).o
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LIBS-$(HAVE_VENDOR_COMMON_LIB) += board/$(VENDOR)/common/lib$(VENDOR).o
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LIBS-$(CONFIG_SPL_FRAMEWORK) += common/spl/libspl.o
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LIBS-$(CONFIG_SPL_LIBCOMMON_SUPPORT) += common/libcommon.o
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LIBS-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/libdisk.o
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LIBS-$(CONFIG_SPL_I2C_SUPPORT) += drivers/i2c/libi2c.o
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LIBS-$(CONFIG_SPL_GPIO_SUPPORT) += drivers/gpio/libgpio.o
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LIBS-$(CONFIG_SPL_MMC_SUPPORT) += drivers/mmc/libmmc.o
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LIBS-$(CONFIG_SPL_SERIAL_SUPPORT) += drivers/serial/libserial.o
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LIBS-$(CONFIG_SPL_SPI_FLASH_SUPPORT) += drivers/mtd/spi/libspi_flash.o
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LIBS-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/libspi.o
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LIBS-$(CONFIG_SPL_FAT_SUPPORT) += fs/fat/libfat.o
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LIBS-$(CONFIG_SPL_LIBGENERIC_SUPPORT) += lib/libgeneric.o
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LIBS-$(CONFIG_SPL_POWER_SUPPORT) += drivers/power/libpower.o
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LIBS-$(CONFIG_SPL_NAND_SUPPORT) += drivers/mtd/nand/libnand.o
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LIBS-$(CONFIG_SPL_ONENAND_SUPPORT) += drivers/mtd/onenand/libonenand.o
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LIBS-$(CONFIG_SPL_DMA_SUPPORT) += drivers/dma/libdma.o
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LIBS-$(CONFIG_SPL_POST_MEM_SUPPORT) += post/drivers/memory.o
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LIBS-$(CONFIG_SPL_NET_SUPPORT) += net/libnet.o
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LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/libnet.o
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LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/phy/libphy.o
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LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/net/phy/libphy.o
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LIBS-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += drivers/usb/musb-new/libusb_musb-new.o
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LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/usb/gadget/libusb_gadget.o
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ifneq ($(CONFIG_OMAP_COMMON),)
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LIBS-y += $(CPUDIR)/omap-common/libomap-common.o
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endif
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ifneq (,$(CONFIG_MX23)$(filter $(SOC), mx25 mx27 mx5 mx6 mx31 mx35))
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LIBS-y += arch/$(ARCH)/imx-common/libimx-common.o
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endif
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ifneq ($(CONFIG_TEGRA),)
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LIBS-y += arch/$(ARCH)/cpu/$(SOC)-common/lib$(SOC)-common.o
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LIBS-y += arch/$(ARCH)/cpu/tegra-common/libcputegra-common.o
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LIBS-y += $(CPUDIR)/tegra-common/libtegra-common.o
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endif
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ifneq ($(CONFIG_MX23)$(CONFIG_MX35),)
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LIBS-y += arch/$(ARCH)/imx-common/libimx-common.o
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endif
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ifeq ($(SOC),exynos)
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LIBS-y += $(CPUDIR)/s5p-common/libs5p-common.o
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endif
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# Add GCC lib
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ifeq ("$(USE_PRIVATE_LIBGCC)", "yes")
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PLATFORM_LIBGCC = $(SPLTREE)/arch/$(ARCH)/lib/libgcc.o
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PLATFORM_LIBS := $(filter-out %/libgcc.o, $(filter-out -lgcc, $(PLATFORM_LIBS))) $(PLATFORM_LIBGCC)
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endif
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START := $(addprefix $(SPLTREE)/,$(START))
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LIBS := $(addprefix $(SPLTREE)/,$(sort $(LIBS-y)))
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__START := $(subst $(obj),,$(START))
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__LIBS := $(subst $(obj),,$(LIBS))
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# Linker Script
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ifdef CONFIG_SPL_LDSCRIPT
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# need to strip off double quotes
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LDSCRIPT := $(addprefix $(SRCTREE)/,$(subst ",,$(CONFIG_SPL_LDSCRIPT)))
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endif
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ifeq ($(wildcard $(LDSCRIPT)),)
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LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot-spl.lds
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endif
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ifeq ($(wildcard $(LDSCRIPT)),)
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LDSCRIPT := $(TOPDIR)/$(CPUDIR)/u-boot-spl.lds
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endif
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ifeq ($(wildcard $(LDSCRIPT)),)
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LDSCRIPT := $(TOPDIR)/arch/$(ARCH)/cpu/u-boot-spl.lds
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endif
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ifeq ($(wildcard $(LDSCRIPT)),)
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$(error could not find linker script)
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endif
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# Special flags for CPP when processing the linker script.
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# Pass the version down so we can handle backwards compatibility
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# on the fly.
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LDPPFLAGS += \
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-include $(TOPDIR)/include/u-boot/u-boot.lds.h \
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-include $(OBJTREE)/include/config.h \
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-DCPUDIR=$(CPUDIR) \
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$(shell $(LD) --version | \
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sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\).*/-DLD_MAJOR=\1 -DLD_MINOR=\2/p')
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$(OBJTREE)/MLO: $(obj)u-boot-spl.bin
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$(OBJTREE)/tools/mkimage -T omapimage \
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-a $(CONFIG_SPL_TEXT_BASE) -d $< $@
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$(OBJTREE)/MLO.byteswap: $(obj)u-boot-spl.bin
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$(OBJTREE)/tools/mkimage -T omapimage -n byteswap \
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-a $(CONFIG_SPL_TEXT_BASE) -d $< $@
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$(OBJTREE)/SPL : $(obj)u-boot-spl.bin depend
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$(MAKE) -C $(SRCTREE)/arch/arm/imx-common $@
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ALL-y += $(obj)u-boot-spl.bin
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ifdef CONFIG_SAMSUNG
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ALL-y += $(obj)$(BOARD)-spl.bin
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endif
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all: $(ALL-y)
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ifdef CONFIG_SAMSUNG
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$(obj)$(BOARD)-spl.bin: $(obj)u-boot-spl.bin
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$(OBJTREE)/tools/mk$(BOARD)spl \
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$(obj)u-boot-spl.bin $(obj)$(BOARD)-spl.bin
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endif
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$(obj)u-boot-spl.bin: $(obj)u-boot-spl
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$(OBJCOPY) $(OBJCFLAGS) -O binary $< $@
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GEN_UBOOT = \
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cd $(obj) && $(LD) $(LDFLAGS) $(LDFLAGS_$(@F)) $(__START) \
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--start-group $(__LIBS) --end-group $(PLATFORM_LIBS) \
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-Map u-boot-spl.map -o u-boot-spl
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$(obj)u-boot-spl: depend $(START) $(LIBS) $(obj)u-boot-spl.lds
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$(GEN_UBOOT)
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$(START): depend
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$(MAKE) -C $(SRCTREE)/$(START_PATH) $@
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$(LIBS): depend
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$(MAKE) -C $(SRCTREE)$(dir $(subst $(SPLTREE),,$@))
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$(obj)u-boot-spl.lds: $(LDSCRIPT) depend
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$(CPP) $(CPPFLAGS) $(LDPPFLAGS) -I$(obj). -ansi -D__ASSEMBLY__ -P - < $< > $@
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depend: $(obj).depend
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.PHONY: depend
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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