1# 2# (C) Copyright 2000-2013 3# Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4# 5# SPDX-License-Identifier: GPL-2.0+ 6# 7######################################################################### 8 9ifeq ($(CURDIR),$(SRCTREE)) 10dir := 11else 12dir := $(subst $(SRCTREE)/,,$(CURDIR)) 13endif 14 15ifneq ($(OBJTREE),$(SRCTREE)) 16# Create object files for SPL in a separate directory 17ifeq ($(CONFIG_SPL_BUILD),y) 18ifeq ($(CONFIG_TPL_BUILD),y) 19obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) 20else 21obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) 22endif 23else 24obj := $(if $(dir),$(OBJTREE)/$(dir)/,$(OBJTREE)/) 25endif 26src := $(if $(dir),$(SRCTREE)/$(dir)/,$(SRCTREE)/) 27 28$(shell mkdir -p $(obj)) 29else 30# Create object files for SPL in a separate directory 31ifeq ($(CONFIG_SPL_BUILD),y) 32ifeq ($(CONFIG_TPL_BUILD),y) 33obj := $(if $(dir),$(TPLTREE)/$(dir)/,$(TPLTREE)/) 34else 35obj := $(if $(dir),$(SPLTREE)/$(dir)/,$(SPLTREE)/) 36 37endif 38$(shell mkdir -p $(obj)) 39else 40obj := 41endif 42src := 43endif 44 45# clean the slate ... 46PLATFORM_RELFLAGS = 47PLATFORM_CPPFLAGS = 48PLATFORM_LDFLAGS = 49 50######################################################################### 51 52# Load generated board configuration 53ifeq ($(CONFIG_TPL_BUILD),y) 54# Include TPL autoconf 55sinclude $(OBJTREE)/include/tpl-autoconf.mk 56else 57ifeq ($(CONFIG_SPL_BUILD),y) 58# Include SPL autoconf 59sinclude $(OBJTREE)/include/spl-autoconf.mk 60else 61# Include normal autoconf 62sinclude $(OBJTREE)/include/autoconf.mk 63endif 64endif 65sinclude $(OBJTREE)/include/config.mk 66 67# Some architecture config.mk files need to know what CPUDIR is set to, 68# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files. 69# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains 70# CPU-specific code. 71CPUDIR=arch/$(ARCH)/cpu/$(CPU) 72ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR))) 73CPUDIR=arch/$(ARCH)/cpu 74endif 75 76sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules 77sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules 78 79ifdef SOC 80sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules 81endif 82ifdef VENDOR 83BOARDDIR = $(VENDOR)/$(BOARD) 84else 85BOARDDIR = $(BOARD) 86endif 87ifdef BOARD 88sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk # include board specific rules 89endif 90 91######################################################################### 92 93RELFLAGS= $(PLATFORM_RELFLAGS) 94 95OBJCFLAGS += --gap-fill=0xff 96 97CPPFLAGS = $(KBUILD_CPPFLAGS) $(RELFLAGS) 98 99# Enable garbage collection of un-used sections for SPL 100ifeq ($(CONFIG_SPL_BUILD),y) 101CPPFLAGS += -ffunction-sections -fdata-sections 102LDFLAGS_FINAL += --gc-sections 103endif 104 105ifneq ($(CONFIG_SYS_TEXT_BASE),) 106CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE) 107endif 108 109ifeq ($(CONFIG_SPL_BUILD),y) 110CPPFLAGS += -DCONFIG_SPL_BUILD 111ifeq ($(CONFIG_TPL_BUILD),y) 112CPPFLAGS += -DCONFIG_TPL_BUILD 113endif 114endif 115 116# Does this architecture support generic board init? 117ifeq ($(__HAVE_ARCH_GENERIC_BOARD),) 118ifneq ($(CONFIG_SYS_GENERIC_BOARD),) 119CHECK_GENERIC_BOARD = $(error Your architecture does not support generic board. \ 120Please undefined CONFIG_SYS_GENERIC_BOARD in your board config file) 121endif 122endif 123 124CPPFLAGS += $(UBOOTINCLUDE) 125CPPFLAGS += $(NOSTDINC_FLAGS) -pipe $(PLATFORM_CPPFLAGS) 126 127CFLAGS := $(KBUILD_CFLAGS) $(CPPFLAGS) 128 129BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%)) 130 131ifeq ($(findstring examples/,$(BCURDIR)),) 132ifeq ($(CONFIG_SPL_BUILD),) 133ifdef FTRACE 134CFLAGS += -finstrument-functions -DFTRACE 135endif 136endif 137endif 138 139AFLAGS := $(KBUILD_AFLAGS) $(CPPFLAGS) 140 141LDFLAGS += $(PLATFORM_LDFLAGS) 142LDFLAGS_FINAL += -Bstatic 143 144LDFLAGS_u-boot += -T $(obj)u-boot.lds $(LDFLAGS_FINAL) 145ifneq ($(CONFIG_SYS_TEXT_BASE),) 146LDFLAGS_u-boot += -Ttext $(CONFIG_SYS_TEXT_BASE) 147endif 148 149LDFLAGS_$(SPL_BIN) += -T $(obj)u-boot-spl.lds $(LDFLAGS_FINAL) 150ifneq ($(CONFIG_SPL_TEXT_BASE),) 151LDFLAGS_$(SPL_BIN) += -Ttext $(CONFIG_SPL_TEXT_BASE) 152endif 153 154######################################################################### 155 156export CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS 157