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 PLATFORM_LDFLAGS :=
  16 LDFLAGS :=
  17 LDFLAGS_FINAL :=
  18 LDFLAGS_STANDALONE :=
  19 OBJCOPYFLAGS :=
  20 # clear VENDOR for tcsh
  21 VENDOR :=
  22 #########################################################################
  23
  24 ARCH := $(CONFIG_SYS_ARCH:"%"=%)
  25 CPU := $(CONFIG_SYS_CPU:"%"=%)
  26 ifdef CONFIG_SPL_BUILD
  27 ifdef CONFIG_TEGRA
  28 CPU := arm720t
  29 endif
  30 endif
  31 BOARD := $(CONFIG_SYS_BOARD:"%"=%)
  32 ifneq ($(CONFIG_SYS_VENDOR),)
  33 VENDOR := $(CONFIG_SYS_VENDOR:"%"=%)
  34 endif
  35 ifneq ($(CONFIG_SYS_SOC),)
  36 SOC := $(CONFIG_SYS_SOC:"%"=%)
  37 endif
  38
  39 # Some architecture config.mk files need to know what CPUDIR is set to,
  40 # so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
  41 # Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
  42 # CPU-specific code.
  43 CPUDIR=arch/$(ARCH)/cpu$(if $(CPU),/$(CPU),)
  44
  45 sinclude $(srctree)/arch/$(ARCH)/config.mk      # include architecture dependend rules
  46 sinclude $(srctree)/$(CPUDIR)/config.mk         # include  CPU  specific rules
  47
  48 ifdef   SOC
  49 sinclude $(srctree)/$(CPUDIR)/$(SOC)/config.mk  # include  SoC  specific rules
  50 endif
  51 ifneq ($(BOARD),)
  52 ifdef   VENDOR
  53 BOARDDIR = $(VENDOR)/$(BOARD)
  54 else
  55 BOARDDIR = $(BOARD)
  56 endif
  57 endif
  58 ifdef   BOARD
  59 sinclude $(srctree)/board/$(BOARDDIR)/config.mk # include board specific rules
  60 endif
  61
  62 ifdef FTRACE
  63 PLATFORM_CPPFLAGS += -finstrument-functions -DFTRACE
  64 endif
  65
  66 #########################################################################
  67
  68 RELFLAGS := $(PLATFORM_RELFLAGS)
  69
  70 PLATFORM_CPPFLAGS += $(RELFLAGS)
  71 PLATFORM_CPPFLAGS += -pipe
  72
  73 LDFLAGS += $(PLATFORM_LDFLAGS)
  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