config.mk

   1 # SPDX-License-Identifier: GPL-2.0+
   2 #
   3 # (C) Copyright 2000-2013
   4 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5 #########################################################################
   6
   7 # This file is included from ./Makefile and spl/Makefile.
   8 # Clean the state to avoid the same flags added twice.
   9 #
  10 # (Tegra needs different flags for SPL.
  11 #  That's the reason why this file must be included from spl/Makefile too.
  12 #  If we did not have Tegra SoCs, build system would be much simpler...)
  13 PLATFORM_RELFLAGS :=
  14 PLATFORM_CPPFLAGS :=
  15 KBUILD_LDFLAGS :=
  16 LDFLAGS_FINAL :=
  17 LDFLAGS_STANDALONE :=
  18 OBJCOPYFLAGS :=
  19 # clear VENDOR for tcsh
  20 VENDOR :=
  21 #########################################################################
  22
  23 ARCH := $(CONFIG_SYS_ARCH:"%"=%)
  24 CPU := $(CONFIG_SYS_CPU:"%"=%)
  25 ifdef CONFIG_SPL_BUILD
  26 ifdef CONFIG_ARCH_TEGRA
  27 CPU := arm720t
  28 endif
  29 endif
  30 BOARD := $(CONFIG_SYS_BOARD:"%"=%)
  31 ifneq ($(CONFIG_SYS_VENDOR),)
  32 VENDOR := $(CONFIG_SYS_VENDOR:"%"=%)
  33 endif
  34 ifneq ($(CONFIG_SYS_SOC),)
  35 SOC := $(CONFIG_SYS_SOC:"%"=%)
  36 endif
  37
  38 # Some architecture config.mk files need to know what CPUDIR is set to,
  39 # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
  40 # Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
  41 # CPU-specific code.
  42 CPUDIR=arch/$(ARCH)/cpu$(if $(CPU),/$(CPU),)
  43
  44 sinclude $(srctree)/arch/$(ARCH)/config.mk      # include architecture dependend rules
  45 sinclude $(srctree)/$(CPUDIR)/config.mk         # include  CPU  specific rules
  46
  47 ifdef   SOC
  48 sinclude $(srctree)/$(CPUDIR)/$(SOC)/config.mk  # include  SoC  specific rules
  49 endif
  50 ifneq ($(BOARD),)
  51 ifdef   VENDOR
  52 BOARDDIR = $(VENDOR)/$(BOARD)
  53 ENVDIR=${vendor}/env
  54 else
  55 BOARDDIR = $(BOARD)
  56 ENVDIR=${board}/env
  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 #########################################################################
  68
  69 RELFLAGS := $(PLATFORM_RELFLAGS)
  70
  71 PLATFORM_CPPFLAGS += $(RELFLAGS)
  72 PLATFORM_CPPFLAGS += -pipe
  73
  74 LDFLAGS_FINAL += -Bstatic
  75
  76 export PLATFORM_CPPFLAGS
  77 export RELFLAGS
  78 export LDFLAGS_FINAL
  79 export LDFLAGS_STANDALONE
  80 export CONFIG_STANDALONE_LOAD_ADDR