README: document the CONFIG_ENV_IS_IN_FAT option
[people/ms/u-boot.git] / config.mk
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e2211743 1#
eca3aeb3 2# (C) Copyright 2000-2013
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3# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4#
eca3aeb3 5# SPDX-License-Identifier: GPL-2.0+
e2211743 6#
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7#########################################################################
8
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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...)
15PLATFORM_RELFLAGS :=
16PLATFORM_CPPFLAGS :=
17PLATFORM_LDFLAGS :=
18LDFLAGS :=
19LDFLAGS_FINAL :=
20OBJCOPYFLAGS :=
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21#########################################################################
22
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23# Some architecture config.mk files need to know what CPUDIR is set to,
24# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
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25# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
26# CPU-specific code.
27CPUDIR=arch/$(ARCH)/cpu/$(CPU)
01286329 28ifneq ($(srctree)/$(CPUDIR),$(wildcard $(srctree)/$(CPUDIR)))
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29CPUDIR=arch/$(ARCH)/cpu
30endif
03b7004d 31
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32sinclude $(srctree)/arch/$(ARCH)/config.mk # include architecture dependend rules
33sinclude $(srctree)/$(CPUDIR)/config.mk # include CPU specific rules
03b7004d 34
c4e5f52a 35ifdef SOC
4379ac61 36sinclude $(srctree)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
c4e5f52a 37endif
33a02da0 38ifneq ($(BOARD),)
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39ifdef VENDOR
40BOARDDIR = $(VENDOR)/$(BOARD)
41else
42BOARDDIR = $(BOARD)
43endif
33a02da0 44endif
c4e5f52a 45ifdef BOARD
4379ac61 46sinclude $(srctree)/board/$(BOARDDIR)/config.mk # include board specific rules
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47endif
48
49#########################################################################
50
026f9cf2 51RELFLAGS := $(PLATFORM_RELFLAGS)
83b7e2a7 52
95ddcd68 53OBJCOPYFLAGS += --gap-fill=0xff
e2211743 54
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55PLATFORM_CPPFLAGS += $(RELFLAGS)
56PLATFORM_CPPFLAGS += -pipe
4a30f1e8 57
8aba9dce 58LDFLAGS += $(PLATFORM_LDFLAGS)
6dc1eceb 59LDFLAGS_FINAL += -Bstatic
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60
61export PLATFORM_CPPFLAGS
62export RELFLAGS
63export LDFLAGS_FINAL
64export CONFIG_STANDALONE_LOAD_ADDR