config.mk

   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
   9 # This file is included from ./Makefile and spl/Makefile.
  10 # Clean the state to avoid the same flags added twice.
  11 #
  12 # (Tegra needs different flags for SPL.
  13 #  That's the reason why this file must be included from spl/Makefile too.
  14 #  If we did not have Tegra SoCs, build system would be much simpler...)
  15 PLATFORM_RELFLAGS :=
  16 PLATFORM_CPPFLAGS :=
  17 PLATFORM_LDFLAGS :=
  18 LDFLAGS :=
  19 LDFLAGS_FINAL :=
  20 OBJCOPYFLAGS :=
  21 # clear VENDOR for tcsh
  22 VENDOR :=
  23 #########################################################################
  24
  25 ARCH := $(CONFIG_SYS_ARCH:"%"=%)
  26 CPU := $(CONFIG_SYS_CPU:"%"=%)
  27 ifdef CONFIG_SPL_BUILD
  28 ifdef CONFIG_TEGRA
  29 CPU := arm720t
  30 endif
  31 endif
  32 BOARD := $(CONFIG_SYS_BOARD:"%"=%)
  33 ifneq ($(CONFIG_SYS_VENDOR),)
  34 VENDOR := $(CONFIG_SYS_VENDOR:"%"=%)
  35 endif
  36 ifneq ($(CONFIG_SYS_SOC),)
  37 SOC := $(CONFIG_SYS_SOC:"%"=%)
  38 endif
  39
  40 # Some architecture config.mk files need to know what CPUDIR is set to,
  41 # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
  42 # Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
  43 # CPU-specific code.
  44 CPUDIR=arch/$(ARCH)/cpu$(if $(CPU),/$(CPU),)
  45
  46 sinclude $(srctree)/arch/$(ARCH)/config.mk      # include architecture dependend rules
  47 sinclude $(srctree)/$(CPUDIR)/config.mk         # include  CPU  specific rules
  48
  49 ifdef   SOC
  50 sinclude $(srctree)/$(CPUDIR)/$(SOC)/config.mk  # include  SoC  specific rules
  51 endif
  52 ifneq ($(BOARD),)
  53 ifdef   VENDOR
  54 BOARDDIR = $(VENDOR)/$(BOARD)
  55 else
  56 BOARDDIR = $(BOARD)
  57 endif
  58 endif
  59 ifdef   BOARD
  60 sinclude $(srctree)/board/$(BOARDDIR)/config.mk # include board specific rules
  61 endif
  62
  63 ifdef FTRACE
  64 PLATFORM_CPPFLAGS += -finstrument-functions -DFTRACE
  65 endif
  66
  67 # Allow use of stdint.h if available
  68 ifneq ($(USE_STDINT),)
  69 PLATFORM_CPPFLAGS += -DCONFIG_USE_STDINT
  70 endif
  71
  72 #########################################################################
  73
  74 RELFLAGS := $(PLATFORM_RELFLAGS)
  75
  76 PLATFORM_CPPFLAGS += $(RELFLAGS)
  77 PLATFORM_CPPFLAGS += -pipe
  78
  79 LDFLAGS += $(PLATFORM_LDFLAGS)
  80 LDFLAGS_FINAL += -Bstatic
  81
  82 export PLATFORM_CPPFLAGS
  83 export RELFLAGS
  84 export LDFLAGS_FINAL
  85 export CONFIG_STANDALONE_LOAD_ADDR