Difference between revisions of "ROM Android: Compile Kernel untuk MediaTek"

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(New page: MTK Kernel Builder 2012-09-24 16:44:41| 分类： Android | 标签：kernel android makefile |举报 |字号 订阅 KConfig 流程 关心点1： kernel builder: @makeMtk make ...)
 
 
(One intermediate revision by the same user not shown)
Line 1: Line 1:
 +
MTK KERNEL BUIDER - Cách tạo kernel hoàn chỉnh cho MTK chip
  
−
MTK Kernel Builder 
+
KConfig Process
 +
Concerned about point 1 :
 +
kernel builder:
 +
@ makeMtk
 +
make-f mediatek / build / makemtk.mk kernel
 +
 
 +
 
 +
@ mediatek / build / makemtk.mk
 +
kernel / build.sh
  
−
2012-09-24 16:44:41|  分类： Android |  标签：kernel  android  makefile  |举报 |字号 订阅
 
−
KConfig 流程
 
−
关心点1：
 
−
kernel builder:
 
−
@makeMtk
 
−
  make -f mediatek/build/makemtk.mk kernel
 
  
−
@mediatek/build/makemtk.mk
+
@ kernel / build.sh
−
  kernel/build.sh
+
make mediatek-configs
 +
nice make $ {makeflags} $ {makedefs} silentoldconfig
 +
make $ {makeflags} $ {makejobs} $ {makedefs}
 +
 
 +
mediatek-configs goal is how original ? :
 +
@ kernel / Makefile
 +
include $ (srctree) / arch / $ (SRCARCH) / Makefile
 +
@ kernel / arch / arm / Makefile
 +
include .. / mediatek / build / kernel / Makefile
 +
@ mediatek / build / kernel / Makefile
 +
. config mediatek-configs: $ (MTK_ROOT_GEN_CONFIG) / kconfig $ (MTK_ROOT_GEN_CONFIG)
 +
@ echo "[COPY] $ <-> $ @"
 +
@ cp $ <$ @
 +
@ echo "[COPY] $ <->. config"
 +
@ cp $ <. config
 +
 
 +
 
 +
@ kernel / Kconfig
 +
source "arch / $ SRCARCH / Kconfig"
 +
@ alps / kernel / arch / arm / Kconfig
 +
source ".. / mediatek / source / kernel / Kconfig"
 +
@ alps / mediatek / source / kernel / Kconfig
 +
31 if ARCH_MT6573
 +
32 source "../mediatek/platform/mt6573/kernel/Kconfig/Kernel"
 +
33 source "../mediatek/platform/mt6573/kernel/Kconfig/Board"
 +
34 source "../mediatek/platform/mt6573/kernel/Kconfig/Drivers"
 +
35 endif
 +
 
 +
 
 +
@ mediatek/platform/mt6573/kernel/Kconfig/Drivers
 +
34 # Frame Buffer Related
 +
35 menuconfig MTK_FB # FB_MT6516 FB_MT6573
 +
36 bool "MediaTek Framebuffer Driver"
 +
37 depends on FB
 +
38 select FB_CFB_FILLRECT
 +
39 select FB_CFB_COPYAREA
 +
40 select FB_CFB_IMAGEBLIT
 +
41 select FB_SOFT_CURSOR
 +
42 --- help ---
 +
43 This selects the MediaTek (R) frame buffer driver.
 +
44 If you want to use MediaTek (R) frame buffer diver, say Y here.
 +
45 If unsure, say N.
 +
 
  
−
@kernel/build.sh
+
Point 2 concerns :
−
  make mediatek-configs
+
menuconfig come from ? Explained:
−
  nice make ${makeflags} ${makedefs} silentoldconfig
 
−
  make ${makeflags} ${makejobs} ${makedefs}
 
−
 
 
−
mediatek-configs 目标是怎么回事? 原来：
 
−
    @kernel/Makefile 
 
−
include $(srctree)/arch/$(SRCARCH)/Makefile
 
−
    @kernel/arch/arm/Makefile
 
−
include ../mediatek/build/kernel/Makefile
 
−
    @mediatek/build/kernel/Makefile
 
−
.config mediatek-configs: $(MTK_ROOT_GEN_CONFIG)/kconfig $(MTK_ROOT_GEN_CONFIG)
 
−
        @echo "[COPY] $< --> $@"
 
−
        @cp $< $@
 
−
        @echo "[COPY] $< --> .config"
 
−
        @cp $< .config
 
  
−
@kernel/Kconfig
 
−
  source "arch/$SRCARCH/Kconfig"
 
−
@alps/kernel/arch/arm/Kconfig
 
−
source "../mediatek/source/kernel/Kconfig"
 
−
@alps/mediatek/source/kernel/Kconfig
 
−
31 if ARCH_MT6573
 
−
32 source "../mediatek/platform/mt6573/kernel/Kconfig/Kernel"
 
−
33 source "../mediatek/platform/mt6573/kernel/Kconfig/Board"
 
−
34 source "../mediatek/platform/mt6573/kernel/Kconfig/Drivers"
 
−
35 endif
 
  
−
@mediatek/platform/mt6573/kernel/Kconfig/Drivers
+
@ alps / kernel / Makefile
−
34 # Frame Buffer Related
+
% config: scripts_basic outputmakefile FORCE
−
35 menuconfig MTK_FB # FB_MT6516 FB_MT6573
+
$ (Q) mkdir-p include / linux include / config
−
36        bool "MediaTek Framebuffer Driver"
+
$ (Q) $ (MAKE) $ (build) = scripts / kconfig $ @
−
37        depends on FB
 
−
38        select FB_CFB_FILLRECT
 
−
39        select FB_CFB_COPYAREA
 
−
40        select FB_CFB_IMAGEBLIT
 
−
41        select FB_SOFT_CURSOR
 
−
42        ---help---
 
−
43          This selects the MediaTek(R) frame buffer driver.
 
−
44          If you want to use MediaTek(R) frame buffer diver, say Y here.
 
−
45          If unsure, say N.
 
  
  
−
关心点2：
+
Regarding the last of a command : I print out is this effect:
−
menuconfig是从哪里来？这样解释：
+
make-f scripts / Makefile.build obj = scripts / kconfig menuconfig
  
−
@alps/kernel/Makefile
 
−
%config: scripts_basic outputmakefile FORCE
 
−
        $(Q)mkdir -p include/linux include/config
 
−
        $(Q)$(MAKE) $(build)=scripts/kconfig $@
 
  
−
关于最后的一条命令： 我打印出来是这样的效果:
+
I do not know $ (build) variable is how calculated , and later found is this:
−
make -f scripts/Makefile.build obj=scripts/kconfig menuconfig
+
@ kernel / Makefile
 +
329 include $ (srctree) / scripts / Kbuild.include
  
−
不知道$(build)变量是怎么计算出来的，后来发现是这样的：
 
−
@kernel/Makefile
 
−
329 include $(srctree)/scripts/Kbuild.include
 
  
−
@kernel/scripts/Kbuild.include
+
@ kernel / scripts / Kbuild.include
−
156 ###
+
156 # # #
−
157 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
+
157 # Shorthand for $ (Q) $ (MAKE)-f scripts / Makefile.build obj =
 
158 # Usage:
 
158 # Usage:
−
159 # $(Q)$(MAKE) $(build)=dir
+
159 # $ (Q) $ (MAKE) $ (build) = dir
−
160 build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj
+
160 build: =-f $ (if $ (KBUILD_SRC), $ (srctree) /) scripts / Makefile.build obj
 +
 
 +
 
 +
Thus, parsing out the above things ,
 +
 
 +
 
 +
@ kernel / scripts / Makefile.build
 +
41 # The filename Kbuild has precedence over Makefile
 +
42 kbuild-dir: = $ (if $ (filter /%, $ (src)), $ (src), $ (srctree) / $ (src))
 +
43 kbuild-file: = $ (if $ (wildcard $ (kbuild-dir) / Kbuild), $ (kbuild-dir) / Kbuild, $ (kbuild-dir) / Makefile)
 +
44 include $ (kbuild-file)
 +
This will kernel / scripts / kconfig / Makefile included into it.
 +
View file kernel / scripts / kconfig / Makefile I also do not have much to say :
 +
@ scripts / kconfig / Makefile
 +
xconfig: $ (obj) / qconf
 +
$ <$ (Kconfig)
 +
 
 +
 
 +
gconfig: $ (obj) / gconf
 +
$ <$ (Kconfig)
  
−
这样，就解析出来了上面的东西，
 
  
−
@kernel/scripts/Makefile.build
+
menuconfig: $ (obj) / mconf
−
41 # The filename Kbuild has precedence over Makefile
+
  $ <$ (Kconfig)
−
42 kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
 
−
43 kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile)
 
−
  44 include $(kbuild-file)
 
−
这样就将 kernel/scripts/kconfig/Makefile 包含进去了。
 
−
查看文件 kernel/scripts/kconfig/Makefile 也就不用我多说了：
 
−
@scripts/kconfig/Makefile
 
−
xconfig: $(obj)/qconf
 
−
        $< $(Kconfig)
 
  
−
gconfig: $(obj)/gconf
 
−
        $< $(Kconfig)
 
  
−
menuconfig: $(obj)/mconf
+
config: $ (obj) / conf
−
        $< $(Kconfig)
+
$ <- Oldaskconfig $ (Kconfig)
  
−
config: $(obj)/conf
 
−
        $< --oldaskconfig $(Kconfig)
 
  
−
nconfig: $(obj)/nconf
+
nconfig: $ (obj) / nconf
−
        $< $(Kconfig)
+
$ <$ (Kconfig)
  
−
oldconfig: $(obj)/conf
 
−
        $< --$@ $(Kconfig)
 
  
−
silentoldconfig: $(obj)/conf
+
oldconfig: $ (obj) / conf
−
        $(Q)mkdir -p include/generated
+
$ <- $ @ $ (Kconfig)
−
        $< --$@ $(Kconfig)
 
−
        cp -f include/generated/autoconf.h include/linux/autoconf.h
 
  
  
−
关心点3：
+
silentoldconfig: $ (obj) / conf
−
.config 文件最终还会被更新一次：查看kernel log
+
  $ (Q) mkdir-p include / generated
−
[COPY] ../mediatek/config/out/s816_bef/autoconfig/kconfig --> mediatek-configs
+
  $ <- $ @ $ (Kconfig)
−
[COPY] ../mediatek/config/out/s816_bef/autoconfig/kconfig --> .config
+
cp-f include / generated / autoconf.h include / linux / autoconf.h
−
  HOSTCC  scripts/kconfig/conf.o
 
−
  SHIPPED scripts/kconfig/zconf.tab.c
 
−
  SHIPPED scripts/kconfig/lex.zconf.c
 
−
  SHIPPED scripts/kconfig/zconf.hash.c
 
−
  HOSTCC scripts/kconfig/zconf.tab.o
 
−
  HOSTLD scripts/kconfig/conf
 
−
scripts/kconfig/conf --silentoldconfig Kconfig
 
−
#
 
−
# configuration written to .config
 
−
#
 
−
cp -f include/generated/autoconf.h include/linux/autoconf.h
 
  
−
看kernel config 的程序 scripts/kconfig/conf 里面的代码有：
 
−
scripts/kconfig/confdata.c:66:  char *name = getenv("KCONFIG_CONFIG");
 
−
而@Makefile
 
−
240:KCONFIG_CONFIG    ?= .config
 
−
export KCONFIG_CONFIG
 
−
可以获知这样的信息。
 
  
 +
Point 3 concerns :
 +
. config file will eventually be updated once : Check kernel log
  
−
mediatek/config/out/s816_bef/autoconfig/kconfig: mediatek/config/mt6575/autoconfig/kconfig/platform  
+
[COPY] .. / mediatek/config/out/s816_bef/autoconfig/kconfig -> mediatek-configs
 +
[COPY] .. / mediatek/config/out/s816_bef/autoconfig/kconfig -> config.
 +
HOSTCC scripts / kconfig / conf.o
 +
SHIPPED scripts / kconfig / zconf.tab.c
 +
SHIPPED scripts / kconfig / lex.zconf.c
 +
SHIPPED scripts / kconfig / zconf.hash.c
 +
HOSTCC scripts / kconfig / zconf.tab.o
 +
HOSTLD scripts / kconfig / conf
 +
scripts / kconfig / conf - silentoldconfig Kconfig
 +
#
 +
# Configuration written to. Config
 +
#
 +
cp-f include / generated / autoconf.h include / linux / autoconf.h
 +
 
 +
 
 +
Look kernel config program scripts / kconfig / conf inside the code are:
 +
 
 +
scripts / kconfig / confdata.c: 66: char * name = getenv ("KCONFIG_CONFIG");
 +
And @ Makefile
 +
240: KCONFIG_CONFIG = config?.
 +
export KCONFIG_CONFIG
 +
You can learn this information.
 +
 
 +
 
 +
mediatek/config/out/s816_bef/autoconfig/kconfig: mediatek/config/mt6575/autoconfig/kconfig/platform
 +
 
 +
 
 +
mediatek / config / common / autoconfig / kconfig / AEE mediatek/config/s816_bef/autoconfig/kconfig/project
  
−
mediatek/config/common/autoconfig/kconfig/AEE mediatek/config/s816_bef/autoconfig/kconfig/project
 
  
 
mediatek/config/out/s816_bef/autoconfig
 
mediatek/config/out/s816_bef/autoconfig
−
@echo "[CONFIG] generate mediatek/config/out/s816_bef/autoconfig/kconfig"
+
@ echo "[CONFIG] generate mediatek/config/out/s816_bef/autoconfig/kconfig"
−
@cat mediatek/config/mt6575/autoconfig/kconfig/platform mediatek/config/common/autoconfig/kconfig/AEE  
+
@ cat mediatek/config/mt6575/autoconfig/kconfig/platform mediatek / config / common / autoconfig / kconfig / AEE
 +
 
 +
 
 +
mediatek/config/s816_bef/autoconfig/kconfig/project | python mediatek / build / tools / config / merge-kconfig.py>
  
−
mediatek/config/s816_bef/autoconfig/kconfig/project  | python mediatek/build/tools/config/merge-kconfig.py >
 
  
 
mediatek/config/out/s816_bef/autoconfig/kconfig
 
mediatek/config/out/s816_bef/autoconfig/kconfig
  
−
查了一下应该是：
 
−
define .mtk.config.generate-auto-merge-rules
 
−
.PHONY: mediatek-configs.$(1)
 
−
mediatek-configs: mediatek-configs.$(1)
 
−
mediatek-configs.$(1): $(2)
 
−
$(2): PRIVATE_FILE_LIST := $(3)
 
−
$(2): $(3) $(4)
 
−
        @echo "[CONFIG] generate $(2)"
 
−
        @cat $(3) | $(5) > $(2)
 
−
endef
 
  
−
应该是这样类似的$(call .mtk.config.generate-auto-merge-rules,kconfig,xx.xx.xx)
+
Should be checked :
−
更有可能是这样的：$(call .mtk.config.generate-auto-rules,xx,xx,xx)
+
define. mtk.config.generate-auto-merge-rules
−
这个就要自己去验证了。
+
. PHONY:. Mediatek-configs $ (1)
 +
mediatek-configs:. mediatek-configs $ (1)
 +
mediatek-configs $ (1):. $ (2)
 +
$ (2): PRIVATE_FILE_LIST: = $ (3)
 +
$ ( 2 ) : $ ( 3 ) $ ( 4 )
 +
@ echo "[CONFIG] generate $ (2)"
 +
@ cat $ (3) | $ (5)> $ (2)
 +
endef
 +
 
  
 +
This should be similar to the $ (call. Mtk.config.generate-auto-merge-rules, kconfig, xx.xx.xx)
 +
More likely is this : $ (. Call mtk.config.generate-auto-rules, xx, xx, xx)
 +
This is necessary to validate themselves .
  
 
==Referensi==
 
==Referensi==
  
 
* http://hubeihuyanwei.blog.163.com/blog/static/28205284201282444441662/
 
* http://hubeihuyanwei.blog.163.com/blog/static/28205284201282444441662/
 +
* https://www.facebook.com/androidevn/posts/823618704330578

Latest revision as of 05:50, 31 December 2014

MTK KERNEL BUIDER - Cách tạo kernel hoàn chỉnh cho MTK chip

KConfig Process Concerned about point 1 : kernel builder: @ makeMtk make-f mediatek / build / makemtk.mk kernel


@ mediatek / build / makemtk.mk kernel / build.sh


@ kernel / build.sh make mediatek-configs nice make $ {makeflags} $ {makedefs} silentoldconfig make $ {makeflags} $ {makejobs} $ {makedefs}

mediatek-configs goal is how original ? : @ kernel / Makefile include $ (srctree) / arch / $ (SRCARCH) / Makefile @ kernel / arch / arm / Makefile include .. / mediatek / build / kernel / Makefile @ mediatek / build / kernel / Makefile . config mediatek-configs: $ (MTK_ROOT_GEN_CONFIG) / kconfig $ (MTK_ROOT_GEN_CONFIG) @ echo "[COPY] $ <-> $ @" @ cp $ <$ @ @ echo "[COPY] $ <->. config" @ cp $ <. config


@ kernel / Kconfig source "arch / $ SRCARCH / Kconfig" @ alps / kernel / arch / arm / Kconfig source ".. / mediatek / source / kernel / Kconfig" @ alps / mediatek / source / kernel / Kconfig 31 if ARCH_MT6573 32 source "../mediatek/platform/mt6573/kernel/Kconfig/Kernel" 33 source "../mediatek/platform/mt6573/kernel/Kconfig/Board" 34 source "../mediatek/platform/mt6573/kernel/Kconfig/Drivers" 35 endif


@ mediatek/platform/mt6573/kernel/Kconfig/Drivers 34 # Frame Buffer Related 35 menuconfig MTK_FB # FB_MT6516 FB_MT6573 36 bool "MediaTek Framebuffer Driver" 37 depends on FB 38 select FB_CFB_FILLRECT 39 select FB_CFB_COPYAREA 40 select FB_CFB_IMAGEBLIT 41 select FB_SOFT_CURSOR 42 --- help --- 43 This selects the MediaTek (R) frame buffer driver. 44 If you want to use MediaTek (R) frame buffer diver, say Y here. 45 If unsure, say N.


Point 2 concerns : menuconfig come from ? Explained:


@ alps / kernel / Makefile % config: scripts_basic outputmakefile FORCE $ (Q) mkdir-p include / linux include / config $ (Q) $ (MAKE) $ (build) = scripts / kconfig $ @


Regarding the last of a command : I print out is this effect: make-f scripts / Makefile.build obj = scripts / kconfig menuconfig


I do not know $ (build) variable is how calculated , and later found is this: @ kernel / Makefile 329 include $ (srctree) / scripts / Kbuild.include


@ kernel / scripts / Kbuild.include 156 # # # 157 # Shorthand for $ (Q) $ (MAKE)-f scripts / Makefile.build obj = 158 # Usage: 159 # $ (Q) $ (MAKE) $ (build) = dir 160 build: =-f $ (if $ (KBUILD_SRC), $ (srctree) /) scripts / Makefile.build obj


Thus, parsing out the above things ,


@ kernel / scripts / Makefile.build 41 # The filename Kbuild has precedence over Makefile 42 kbuild-dir: = $ (if $ (filter /%, $ (src)), $ (src), $ (srctree) / $ (src)) 43 kbuild-file: = $ (if $ (wildcard $ (kbuild-dir) / Kbuild), $ (kbuild-dir) / Kbuild, $ (kbuild-dir) / Makefile) 44 include $ (kbuild-file) This will kernel / scripts / kconfig / Makefile included into it. View file kernel / scripts / kconfig / Makefile I also do not have much to say : @ scripts / kconfig / Makefile xconfig: $ (obj) / qconf 

$ <$ (Kconfig)


gconfig: $ (obj) / gconf 

$ <$ (Kconfig)


menuconfig: $ (obj) / mconf 

$ <$ (Kconfig)


config: $ (obj) / conf 

$ <- Oldaskconfig $ (Kconfig)


nconfig: $ (obj) / nconf 

$ <$ (Kconfig)


oldconfig: $ (obj) / conf 

$ <- $ @ $ (Kconfig)


silentoldconfig: $ (obj) / conf 

$ (Q) mkdir-p include / generated
$ <- $ @ $ (Kconfig)
cp-f include / generated / autoconf.h include / linux / autoconf.h


Point 3 concerns : . config file will eventually be updated once : Check kernel log 

[COPY] .. / mediatek/config/out/s816_bef/autoconfig/kconfig -> mediatek-configs
[COPY] .. / mediatek/config/out/s816_bef/autoconfig/kconfig -> config.
HOSTCC scripts / kconfig / conf.o
SHIPPED scripts / kconfig / zconf.tab.c
SHIPPED scripts / kconfig / lex.zconf.c
SHIPPED scripts / kconfig / zconf.hash.c
HOSTCC scripts / kconfig / zconf.tab.o
HOSTLD scripts / kconfig / conf
scripts / kconfig / conf - silentoldconfig Kconfig
#
# Configuration written to. Config
#
cp-f include / generated / autoconf.h include / linux / autoconf.h


Look kernel config program scripts / kconfig / conf inside the code are: 

scripts / kconfig / confdata.c: 66: char * name = getenv ("KCONFIG_CONFIG");
And @ Makefile
240: KCONFIG_CONFIG = config?.
export KCONFIG_CONFIG
You can learn this information.


mediatek/config/out/s816_bef/autoconfig/kconfig: mediatek/config/mt6575/autoconfig/kconfig/platform


mediatek / config / common / autoconfig / kconfig / AEE mediatek/config/s816_bef/autoconfig/kconfig/project


mediatek/config/out/s816_bef/autoconfig @ echo "[CONFIG] generate mediatek/config/out/s816_bef/autoconfig/kconfig" @ cat mediatek/config/mt6575/autoconfig/kconfig/platform mediatek / config / common / autoconfig / kconfig / AEE


mediatek/config/s816_bef/autoconfig/kconfig/project | python mediatek / build / tools / config / merge-kconfig.py>


mediatek/config/out/s816_bef/autoconfig/kconfig


Should be checked : 

define. mtk.config.generate-auto-merge-rules
. PHONY:. Mediatek-configs $ (1)
mediatek-configs:. mediatek-configs $ (1)
mediatek-configs $ (1):. $ (2)
$ (2): PRIVATE_FILE_LIST: = $ (3)
$ ( 2 ) : $ ( 3 ) $ ( 4 )
@ echo "[CONFIG] generate $ (2)"
@ cat $ (3) | $ (5)> $ (2)
endef


This should be similar to the $ (call. Mtk.config.generate-auto-merge-rules, kconfig, xx.xx.xx) More likely is this : $ (. Call mtk.config.generate-auto-rules, xx, xx, xx) This is necessary to validate themselves .

Referensi

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