mirror of
https://github.com/ivoszbg/uniLoader.git
synced 2024-09-20 06:51:49 +00:00
54d3d93a92
Introduce stack and bss memory regions, rename Start.S to start.S This commit should allow jumping out of assembly code for certain SoCs that had issues with SP like MTK and QCOM. Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
527 lines
17 KiB
Makefile
527 lines
17 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# *DOCUMENTATION*
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# To see a list of typical targets execute "make help"
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# More info can be located in ./README
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# Comments in this file are targeted only to the developer, do not
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# expect to learn how to build the kernel reading this file.
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# Do not:
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# o use make's built-in rules and variables
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# (this increases performance and avoids hard-to-debug behaviour);
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# o print "Entering directory ...";
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ARCH ?= aarch64
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MAKEFLAGS += -rR --no-print-directory
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# To put more focus on warnings, be less verbose as default
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# Use 'make V=1' to see the full commands
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ifeq ("$(origin V)", "command line")
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KBUILD_VERBOSE = $(V)
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endif
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ifndef KBUILD_VERBOSE
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KBUILD_VERBOSE = 0
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endif
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# kbuild supports saving output files in a separate directory.
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# To locate output files in a separate directory two syntaxes are supported.
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# In both cases the working directory must be the root of the kernel src.
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# 1) O=
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# Use "make O=dir/to/store/output/files/"
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#
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# 2) Set KBUILD_OUTPUT
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# Set the environment variable KBUILD_OUTPUT to point to the directory
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# where the output files shall be placed.
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# export KBUILD_OUTPUT=dir/to/store/output/files/
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# make
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#
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# The O= assignment takes precedence over the KBUILD_OUTPUT environment
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# variable.
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# Our default target
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PHONY := _all
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_all:
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# KBUILD_SRC is set on invocation of make in OBJ directory
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# KBUILD_SRC is not intended to be used by the regular user (for now)
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ifeq ($(KBUILD_SRC),)
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# OK, Make called in directory where kernel src resides
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# Do we want to locate output files in a separate directory?
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ifeq ("$(origin O)", "command line")
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KBUILD_OUTPUT := $(O)
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endif
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ifeq ("$(origin W)", "command line")
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export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
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endif
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# Cancel implicit rules on top Makefile
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$(CURDIR)/Makefile Makefile: ;
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ifneq ($(KBUILD_OUTPUT),)
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# Invoke a second make in the output directory, passing relevant variables
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# check that the output directory actually exists
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saved-output := $(KBUILD_OUTPUT)
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KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
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$(if $(KBUILD_OUTPUT),, \
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$(error output directory "$(saved-output)" does not exist))
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PHONY += $(MAKECMDGOALS) sub-make
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$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
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$(Q)@:
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sub-make: FORCE
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$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
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KBUILD_SRC=$(CURDIR) \
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-f $(CURDIR)/Makefile \
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$(filter-out _all sub-make,$(MAKECMDGOALS))
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# Leave processing to above invocation of make
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skip-makefile := 1
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endif # ifneq ($(KBUILD_OUTPUT),)
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endif # ifeq ($(KBUILD_SRC),)
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# We process the rest of the Makefile if this is the final invocation of make
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ifeq ($(skip-makefile),)
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# If building an external module we do not care about the all: rule
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# but instead _all depend on modules
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PHONY += all
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_all: all
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srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
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objtree := $(CURDIR)
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src := $(srctree)
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obj := $(objtree)
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VPATH := $(srctree)
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export srctree objtree VPATH
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CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
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KERNEL_PATH ?= $(CONFIG_KERNEL_PATH:"%"=%)
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DT_PATH ?= $(CONFIG_DT_PATH:"%"=%)
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TEXT_BASE ?= $(CONFIG_TEXT_BASE:"%"=%)
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KCONFIG_CONFIG ?= .config
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export KCONFIG_CONFIG
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# SHELL used by kbuild
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CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
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else if [ -x /bin/bash ]; then echo /bin/bash; \
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else echo sh; fi ; fi)
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HOSTCC = gcc
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HOSTCXX = g++
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HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer -Wno-builtin-declaration-mismatch
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HOSTCXXFLAGS = -O2
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# Beautify output
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# ---------------------------------------------------------------------------
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#
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# Normally, we echo the whole command before executing it. By making
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# that echo $($(quiet)$(cmd)), we now have the possibility to set
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# $(quiet) to choose other forms of output instead, e.g.
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#
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# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
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# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
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#
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# If $(quiet) is empty, the whole command will be printed.
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# If it is set to "quiet_", only the short version will be printed.
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# If it is set to "silent_", nothing will be printed at all, since
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# the variable $(silent_cmd_cc_o_c) doesn't exist.
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#
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# A simple variant is to prefix commands with $(Q) - that's useful
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# for commands that shall be hidden in non-verbose mode.
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#
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# $(Q)ln $@ :<
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#
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# If KBUILD_VERBOSE equals 0 then the above command will be hidden.
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# If KBUILD_VERBOSE equals 1 then the above command is displayed.
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ifeq ($(KBUILD_VERBOSE),1)
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quiet =
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Q =
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else
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quiet=quiet_
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Q = @
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endif
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# If the user is running make -s (silent mode), suppress echoing of
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# commands
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ifneq ($(findstring s,$(MAKEFLAGS)),)
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quiet=silent_
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endif
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export quiet Q KBUILD_VERBOSE
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# Look for make include files relative to root of kernel src
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MAKEFLAGS += --include-dir=$(srctree)
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# We need some generic definitions (do not try to remake the file).
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$(srctree)/scripts/Kbuild.include: ;
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include $(srctree)/scripts/Kbuild.include
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# Make variables (CC, etc...)
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AS = $(CROSS_COMPILE)as
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LD = $(CROSS_COMPILE)ld
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CC = $(CROSS_COMPILE)gcc
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CPP = $(CC) -E
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AR = $(CROSS_COMPILE)ar
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NM = $(CROSS_COMPILE)nm
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STRIP = $(CROSS_COMPILE)strip
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OBJCOPY = $(CROSS_COMPILE)objcopy
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OBJDUMP = $(CROSS_COMPILE)objdump
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AWK = awk
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INSTALLKERNEL := installkernel
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PERL = perl
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CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
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-Wbitwise -Wno-return-void $(CF)
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CFLAGS_KERNEL =
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AFLAGS_KERNEL =
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# Use LINUXINCLUDE when you must reference the include/ directory.
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# Needed to be compatible with the O= option
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LINUXINCLUDE := -Iinclude \
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$(if $(KBUILD_SRC), -I$(srctree)/include) \
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-include include/generated/autoconf.h
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KBUILD_CPPFLAGS := -D__KERNEL__
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KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
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-fno-strict-aliasing -fno-common \
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-Werror-implicit-function-declaration \
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-Wno-format-security \
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-fno-delete-null-pointer-checks \
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-Wno-builtin-declaration-mismatch -Wno-main -nostdinc \
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-I$(srctree)/lib/neatlibc
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KBUILD_AFLAGS_KERNEL :=
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KBUILD_CFLAGS_KERNEL :=
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KBUILD_AFLAGS := -D__ASSEMBLY__
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# Read KERNELRELEASE from include/config/kernel.release (if it exists)
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KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
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KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
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export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
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export CPP AR NM STRIP OBJCOPY OBJDUMP
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export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
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export HOSTCXX HOSTCXXFLAGS
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export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
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export KBUILD_CFLAGS CFLAGS_KERNEL
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export KBUILD_AFLAGS AFLAGS_KERNEL
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export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
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export KBUILD_ARFLAGS
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# Files to ignore in find ... statements
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RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
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# ===========================================================================
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# Rules shared between *config targets and build targets
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# Basic helpers built in scripts/
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PHONY += scripts_basic
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scripts_basic:
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$(Q)$(MAKE) $(build)=scripts/basic
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# To avoid any implicit rule to kick in, define an empty command.
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scripts/basic/%: scripts_basic ;
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PHONY += outputmakefile
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# outputmakefile generates a Makefile in the output directory, if using a
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# separate output directory. This allows convenient use of make in the
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# output directory.
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outputmakefile:
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ifneq ($(KBUILD_SRC),)
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$(Q)ln -fsn $(srctree) source
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
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$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
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endif
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# To make sure we do not include .config for any of the *config targets
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# catch them early, and hand them over to scripts/kconfig/Makefile
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# It is allowed to specify more targets when calling make, including
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# mixing *config targets and build targets.
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# For example 'make oldconfig all'.
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# Detect when mixed targets is specified, and make a second invocation
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# of make so .config is not included in this case either (for *config).
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no-dot-config-targets := clean mrproper distclean \
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cscope gtags TAGS tags help %docs check% coccicheck \
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include/linux/version.h headers_% \
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kernelversion %src-pkg
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config-targets := 0
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mixed-targets := 0
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dot-config := 1
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ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
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ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
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dot-config := 0
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endif
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endif
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ifneq ($(filter config %config,$(MAKECMDGOALS)),)
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config-targets := 1
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ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
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mixed-targets := 1
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endif
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endif
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ifeq ($(mixed-targets),1)
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# ===========================================================================
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# We're called with mixed targets (*config and build targets).
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# Handle them one by one.
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%:: FORCE
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$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
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else
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ifeq ($(config-targets),1)
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# ===========================================================================
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# *config targets only - make sure prerequisites are updated, and descend
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# in scripts/kconfig to make the *config target
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# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
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# KBUILD_DEFCONFIG may point out an alternative default configuration
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# used for 'make defconfig'
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#include $(srctree)/arch/$(SRCARCH)/Makefile
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export KBUILD_DEFCONFIG KBUILD_KCONFIG
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config: scripts_basic outputmakefile FORCE
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$(Q)mkdir -p include/linux include/config
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$(Q)$(MAKE) $(build)=scripts/kconfig $@
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%config: scripts_basic outputmakefile FORCE
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$(Q)mkdir -p include/linux include/config
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$(Q)$(MAKE) $(build)=scripts/kconfig $@
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else
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ifeq ($(dot-config),1)
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# Read in config
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-include include/config/auto.conf
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# Read in dependencies to all Kconfig* files, make sure to run
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# oldconfig if changes are detected.
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-include include/config/auto.conf.cmd
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# To avoid any implicit rule to kick in, define an empty command
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$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
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# If .config is newer than include/config/auto.conf, someone tinkered
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# with it and forgot to run make oldconfig.
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# if auto.conf.cmd is missing then we are probably in a cleaned tree so
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# we execute the config step to be sure to catch updated Kconfig files
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include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
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$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
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else
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# Dummy target needed, because used as prerequisite
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include/config/auto.conf: ;
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endif # $(dot-config)
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# The all: target is the default when no target is given on the
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# command line.
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# This allow a user to issue only 'make' to build a kernel including modules
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# Defaults to vmlinux, but the arch makefile usually adds further targets
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all: arch/$(ARCH)/linker.lds uniLoader
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# List of main executables
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main-y := arch/$(ARCH)/start.o \
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main/main.o
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# Object directories
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objs-y := main
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objs-y += arch
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libs-y := soc
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libs-y += board
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libs-y += lib
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uniLoader-dirs := $(objs-y) $(libs-y)
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uniLoader-objs := $(patsubst %,%/built-in.o, $(objs-y))
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uniLoader-mains := $(objs-y)/*.o
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uniLoader-libs := $(patsubst %,%/lib.a, $(libs-y))
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uniLoader-all := $(uniLoader-objs) $(uniLoader-libs)
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# Do modpost on a prelinked vmlinux. The finally linked vmlinux has
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# relevant sections renamed as per the linker script.
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quiet_cmd_uniLoader = LD $@.o
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cmd_uniLoader = $(LD) $(main-y) $(uniLoader-libs) -o $@.o --script=arch/$(ARCH)/linker.lds
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arch/$(ARCH)/linker.lds: arch/$(ARCH)/linker.lds.S $(KERNEL_PATH)
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$(CPP) $< -DTEXT_BASE=$(TEXT_BASE) -DKERNEL_PATH=$(KERNEL_PATH) -DDTB_PATH=$(DT_PATH) -P -o $@
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uniLoader: $(uniLoader-all)
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$(call if_changed,uniLoader)
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@echo ' OBJCOPY $@'
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$(OBJCOPY) -O binary uniLoader.o uniLoader
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# The actual objects are generated when descending,
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# make sure no implicit rule kicks in
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$(sort $(uniLoader-all)): $(uniLoader-dirs) ;
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# Handle descending into subdirectories listed in $(vmlinux-dirs)
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# Preset locale variables to speed up the build process. Limit locale
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# tweaks to this spot to avoid wrong language settings when running
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# make menuconfig etc.
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# Error messages still appears in the original language
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#PHONY += $(vmlinux-dirs)
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#$(vmlinux-dirs): prepare scripts
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PHONY += $(uniLoader-dirs)
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$(uniLoader-dirs): scripts_basic
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$(Q)$(MAKE) $(build)=$@
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###
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# Cleaning is done on three levels.
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# make clean Delete most generated files
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# Leave enough to build external modules
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# make mrproper Delete the current configuration, and all generated files
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# make distclean Remove editor backup files, patch leftover files and the like
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# Directories & files removed with 'make clean'
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CLEAN_DIRS +=
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CLEAN_FILES += uniLoader
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# Directories & files removed with 'make mrproper'
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MRPROPER_DIRS += include/config include/generated
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MRPROPER_FILES += .config .config.old tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
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# clean - Delete most, but leave enough to build external modules
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#
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clean: rm-dirs := $(CLEAN_DIRS)
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clean: rm-files := $(CLEAN_FILES)
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clean-dirs := $(addprefix _clean_, $(uniLoader-dirs))
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PHONY += $(clean-dirs) clean archclean
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$(clean-dirs):
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$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
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clean: $(clean-dirs)
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$(call cmd,rmdirs)
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$(call cmd,rmfiles)
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@find . $(RCS_FIND_IGNORE) \
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\( -name '*.[oas]' -o -name '.*.cmd' \
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-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' -o -name '*.lds' \
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-o -name modules.builtin -o -name '.tmp_*.o.*' \
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-o -name '*.gcno' \) -type f -print | xargs rm -f
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# mrproper - Delete all generated files, including .config
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#
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mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
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mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
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mrproper-dirs := $(addprefix _mrproper_, scripts)
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PHONY += $(mrproper-dirs) mrproper
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$(mrproper-dirs):
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$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
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mrproper: clean $(mrproper-dirs)
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$(call cmd,rmdirs)
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$(call cmd,rmfiles)
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# distclean
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#
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PHONY += distclean
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distclean: mrproper
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@find $(srctree) $(RCS_FIND_IGNORE) \
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\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
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-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
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-o -name '.*.rej' -o -size 0 \
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-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
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-type f -print | xargs rm -f
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# FIXME Should go into a make.lib or something
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# ===========================================================================
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quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
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cmd_rmdirs = rm -rf $(rm-dirs)
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quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
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cmd_rmfiles = rm -f $(rm-files)
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# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
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# Usage:
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# $(Q)$(MAKE) $(clean)=dir
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clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
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help:
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@echo 'Cleaning targets:'
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@echo ' clean - Remove most generated files but keep the config and'
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@echo ' enough build support to build external modules'
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@echo ' mrproper - Remove all generated files + config + various backup files'
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@echo ' distclean - mrproper + remove editor backup and patch files'
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@echo ''
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@echo 'Configuration targets:'
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@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
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@echo ''
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@echo 'Other generic targets:'
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@echo ' all - Build all targets marked with [*]'
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@echo '* uniLoader - Build the application'
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@echo ' dir/ - Build all files in dir and below'
|
|
@echo ' dir/file.[oisS] - Build specified target only'
|
|
@echo ' dir/file.lst - Build specified mixed source/assembly target only'
|
|
@echo ' (requires a recent binutils and recent build (System.map))'
|
|
@echo ' tags/TAGS - Generate tags file for editors'
|
|
@echo ' cscope - Generate cscope index'
|
|
@echo ' gtags - Generate GNU GLOBAL index'
|
|
@echo ' kernelrelease - Output the release version string'
|
|
@echo ' kernelversion - Output the version stored in Makefile'
|
|
echo ''
|
|
@echo 'Static analysers'
|
|
@echo ' checkstack - Generate a list of stack hogs'
|
|
@echo ' namespacecheck - Name space analysis on compiled kernel'
|
|
@echo ' versioncheck - Sanity check on version.h usage'
|
|
@echo ' includecheck - Check for duplicate included header files'
|
|
@echo ' export_report - List the usages of all exported symbols'
|
|
@echo ' headers_check - Sanity check on exported headers'
|
|
# @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
|
|
@echo ''
|
|
# @echo 'Kernel packaging:'
|
|
# @$(MAKE) $(build)=$(package-dir) help
|
|
@echo ''
|
|
# @echo 'Documentation targets:'
|
|
# @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
|
|
@echo ''
|
|
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
|
|
@echo ' make V=2 [targets] 2 => give reason for rebuild of target'
|
|
@echo ' make O=dir [targets] Locate all output files in "dir", including .config'
|
|
@echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
|
|
@echo ' 1: warnings which may be relevant and do not occur too often'
|
|
@echo ' 2: warnings which occur quite often but may still be relevant'
|
|
@echo ' 3: more obscure warnings, can most likely be ignored'
|
|
@echo ' Multiple levels can be combined with W=12 or W=123'
|
|
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
|
|
@echo ''
|
|
@echo 'Execute "make" or "make all" to build all targets marked with [*] '
|
|
@echo 'For further info see the ./README file'
|
|
|
|
|
|
endif #ifeq ($(config-targets),1)
|
|
endif #ifeq ($(mixed-targets),1)
|
|
|
|
endif # skip-makefile
|
|
|
|
PHONY += FORCE
|
|
FORCE:
|
|
|
|
# Declare the contents of the .PHONY variable as phony. We keep that
|
|
# information in a variable so we can use it in if_changed and friends.
|
|
.PHONY: $(PHONY)
|