BeagleBone Blackのkernelの再構築を試みる

2014.09.08

BBBのkernelの再構築を試みる。
makeの手順は以下で詳しく説明されている。
http://wiki.beyondlogic.org/index.php/BeagleBoneBlack_Building_Kernel

上記URLでの手順ではKernel3.12で説明されているが、今回は作成したmicroSDの環境の Kernelの換装が目的であるので、Kernel3.8で手順をなぞる。

先ずはクロスコンパイルのtool-chainとgit、u-bootをインストールする。

temp-host@temp-host:~$ sudo apt-get install gcc-arm-linux-gnueabi
temp-host@temp-host:~$ sudo apt-get install git

temp-host@temp-host:~$ git config --global user.email "temp-host.email@temp-host.com"
temp-host@temp-host:~$ sudo apt-get install lzop
temp-host@temp-host:~$ wget ftp://ftp.denx.de/pub/u-boot/u-boot-latest.tar.bz2
temp-host@temp-host:~$ tar -xjf u-boot-latest.tar.bz2
#cd into u-boot directory
temp-host@temp-host:~$ cd u-boot-2014.07
temp-host@temp-host:~$ make tools-only
temp-host@temp-host:~$ sudo install tools/mkimage /usr/local/bin

temp-host@temp-host:~$ mkdir bbb_kernel.3.8
temp-host@temp-host:~$ cd bbb_kernel.3.8/
temp-host@temp-host:~/bbb_kernel.3.8$ git clone git://github.com/beagleboard/kernel.git
Cloning into 'kernel'...
remote: Counting objects: 31953, done.
remote: Total 31953 (delta 0), reused 0 (delta 0)
Receiving objects: 100% (31953/31953), 17.51 MiB | 4.27 MiB/s, done.
Resolving deltas: 100% (21512/21512), done.
Checking connectivity... done.
temp-host@temp-host:~/bbb_kernel.3.8$ 
temp-host@temp-host:~$ cd kernel/
temp-host@temp-host:~/bbb_kernel.3.8/kernel$ git checkout 3.8
Branch 3.8 set up to track remote branch 3.8 from origin.
Switched to a new branch '3.8'

patch.shを実行。
ちなみにpatch.shの実行は仮想環境でのゲストOSでは一時間半以上かかる。
ログは長いので省略する。

temp-host@temp-host:~$ ./patch.sh

次にdefconfigの差し替えを行う。

temp-host@temp-host:~/bbb_kernel.3.8/kernel$ cp configs/beaglebone kernel/arch/arm/configs/beaglebone_defconfig
temp-host@temp-host:~/bbb_kernel.3.8/kernel$ wget http://arago-project.org/git/projects/?p=am33x-cm3.git\;a=blob_plain\;f=bin/am335x-pm-firmware.bin\;hb=HEAD -O kernel/firmware/am335x-pm-firmware.bin
--2014-09-14 01:21:31--  http://arago-project.org/git/projects/?p=am33x-cm3.git;a=blob_plain;f=bin/am335x-pm-firmware.bin;hb=HEAD
arago-project.org (arago-project.org) をDNSに問いあわせています... 184.73.161.183
arago-project.org (arago-project.org)|184.73.161.183|:80 に接続しています... 接続しました。
HTTP による接続要求を送信しました、応答を待っています... 200 OK
長さ: 10796 (11K) [application/octet-stream]
`kernel/firmware/am335x-pm-firmware.bin' に保存中

100%[======================================>] 10,796      61.7KB/s   時間 0.2s 

2014-09-14 01:21:32 (61.7 KB/s) - `kernel/firmware/am335x-pm-firmware.bin' へ保存完了 [10796/10796]
temp-host@temp-host:~/bbb_kernel.3.8/kernel$ cd kernel
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- beaglebone_defconfig -j4
  HOSTCC  scripts/basic/fixdep
  HOSTCC  scripts/kconfig/conf.o
  SHIPPED scripts/kconfig/zconf.lex.c
  SHIPPED scripts/kconfig/zconf.tab.c
  SHIPPED scripts/kconfig/zconf.hash.c
  HOSTCC  scripts/kconfig/zconf.tab.o
  HOSTLD  scripts/kconfig/conf
drivers/video/Kconfig:60:error: recursive dependency detected!
drivers/video/Kconfig:60:	symbol FB is selected by DRM_KMS_HELPER
drivers/gpu/drm/Kconfig:28:	symbol DRM_KMS_HELPER is selected by DRM_TILCDC
drivers/gpu/drm/tilcdc/Kconfig:1:	symbol DRM_TILCDC depends on BACKLIGHT_LCD_SUPPORT
drivers/video/backlight/Kconfig:5:	symbol BACKLIGHT_LCD_SUPPORT is selected by FB_BACKLIGHT
drivers/video/Kconfig:247:	symbol FB_BACKLIGHT is selected by PMAC_BACKLIGHT
drivers/macintosh/Kconfig:134:	symbol PMAC_BACKLIGHT depends on FB
warning: (USB_MUSB_HDRC) selects TWL6030_USB which has unmet direct dependencies (USB_SUPPORT && (USB || USB_GADGET) && TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS)
warning: (DVB_USB_PCTV452E) selects TTPCI_EEPROM which has unmet direct dependencies (MEDIA_SUPPORT && MEDIA_PCI_SUPPORT && MEDIA_DIGITAL_TV_SUPPORT && I2C)
warning: (USB_MUSB_HDRC) selects TWL6030_USB which has unmet direct dependencies (USB_SUPPORT && (USB || USB_GADGET) && TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS)
warning: (DVB_USB_PCTV452E) selects TTPCI_EEPROM which has unmet direct dependencies (MEDIA_SUPPORT && MEDIA_PCI_SUPPORT && MEDIA_DIGITAL_TV_SUPPORT && I2C)
#
# configuration written to .config
#

準備が整ったのでkernelとdtbsをmakeする。

temp-host@temp-host:~/bbb_kernel.3.8/kernel$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- uImage dtbs LOADADDR=0x80008000 -j4

Kernelのフルビルドであるが10分程度。
ログは長いので省略する。

引き続きmodulesのmakeを行う。

temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- modules -j4

特に問題無くmakeが完了。
ログは長いので省略する。

Kernel makeの成果物は以下

temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ ls -la  ./arch/arm/boot/ 
合計 15776
drwxrwxr-x  5 temp-host temp-host    4096  9月 14 01:39 .
drwxrwxr-x 87 temp-host temp-host    4096  9月 14 01:13 ..
-rw-rw-r--  1 temp-host temp-host     107  9月 14 01:39 .Image.cmd
-rw-rw-r--  1 temp-host temp-host      46  9月 14 00:57 .gitignore
-rw-rw-r--  1 temp-host temp-host     243  9月 14 01:39 .uImage.cmd
-rw-rw-r--  1 temp-host temp-host     134  9月 14 01:39 .zImage.cmd
-rwxrwxr-x  1 temp-host temp-host 7250272  9月 14 01:39 Image
-rw-rw-r--  1 temp-host temp-host    3404  9月 14 01:10 Makefile
drwxrwxr-x  2 temp-host temp-host    4096  9月 14 00:57 bootp
drwxrwxr-x  2 temp-host temp-host    4096  9月 14 01:39 compressed
drwxrwxr-x  3 temp-host temp-host   36864  9月 14 01:28 dts
-rw-rw-r--  1 temp-host temp-host    1274  9月 14 01:06 install.sh
-rw-rw-r--  1 temp-host temp-host 4408216  9月 14 01:39 uImage
-rwxrwxr-x  1 temp-host temp-host 4408152  9月 14 01:39 zImage
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$

これでkernel関連のmakeは完了した。
実は6月に試した際はいくつもの問題があり色々細工が必要であった。
9月現在ではスムーズに完了するようになっている。

ubootやrootfsを一から再構築するのは面倒であるので、これまでに構築したmicroSDカードのものを流用することとし、 上記makeの生成物をmicroSDカードの内容と差し替える。
debianなのでdpkgが使えるのかもしれないが、原始的に手動コピーで行う。
母艦(ゲストOS)でこれまでに構築したmicroSDカードを認識させる。
母艦(ゲストOS)に/media/temp-host/BEAGLE_BONE/として認識されたとして手順を進める。

先ずはzImageおよびdtbsの内容物を手動でコピーする。

temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ ls -la /media/temp-host/BEAGLE_BONE/
合計 7494
drwx------  8 temp-host temp-host   16384  1月  1  1970 .
drwxr-x---+ 4 root      root         4096  9月 14 22:35 ..
drwx------  2 temp-host temp-host    2048  5月 14 22:19 App
drwx------  4 temp-host temp-host    2048  5月 14 22:19 Docs
drwx------  5 temp-host temp-host    2048  5月 14 22:19 Drivers
-rw-r--r--  1 temp-host temp-host      51  5月 14 22:18 ID.txt
-rw-r--r--  1 temp-host temp-host   41174  5月 14 22:19 LICENSE.txt
-rw-r--r--  1 temp-host temp-host   82424  5月 14 22:18 MLO
-rw-r--r--  1 temp-host temp-host   16822  5月 14 22:19 README.htm
-rw-r--r--  1 temp-host temp-host     292  5月 14 22:19 README.md
-rw-r--r--  1 temp-host temp-host     313  5月 14 22:18 SOC.sh
-rw-r--r--  1 temp-host temp-host   16822  5月 14 22:19 START.htm
-rw-r--r--  1 temp-host temp-host     223  5月 14 22:19 autorun.inf
drwx------  2 temp-host temp-host    2048  5月 14 22:18 debug
drwx------  2 temp-host temp-host    2048  5月 14 22:18 dtbs
-rw-r--r--  1 temp-host temp-host 2957458  5月 14 22:18 initrd.img
drwx------  2 temp-host temp-host    2048  5月 14 22:19 scripts
-rw-r--r--  1 temp-host temp-host  401704  5月 14 22:18 u-boot.img
-rw-r--r--  1 temp-host temp-host    1672  5月 14 22:18 uEnv.txt
-rw-r--r--  1 temp-host temp-host 4103240  5月 14 22:18 zImage
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ mkdir /media/temp-host/BEAGLE_BONE/kernel3.8.13.bone.50
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ mv /media/temp-host/BEAGLE_BONE/zImage /media/temp-host/BEAGLE_BONE/kernel3.8.13.bone.50/
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ mv /media/temp-host/BEAGLE_BONE/dtbs /media/temp-host/BEAGLE_BONE/kernel3.8.13.bone.50/
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ mkdir /media/temp-host/BEAGLE_BONE/dtbs
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ cp ./arch/arm/boot/dts/*.dtb /media/temp-host/BEAGLE_BONE/dtbs/

zImageおよびdtbsの内容物は一応バックアップを取ることとする。
しかしこのパーティションの容量は少ないし、ディスクイメージは残してあるのでバッサリ消してしまっても構わない。
残すとしても母艦(ゲストOS)に残すので良いだろう。

次にmodulesのinstallを行う。
母艦(ゲストOS)に/media/temp-host/rootfs/として認識されたとして手順を進める。

temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ sudo make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- INSTALL_MOD_PATH=/media/temp-host/rootfs modules_install

ログは長いので省略
数分で完了する。 一応syncを行う。

temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ sudo sync
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ sudo sync
temp-host@temp-host:~/bbb_kernel.3.8/kernel/kernel$ sudo sync

丁寧ではないが、一応これで立ち上がるはずだ。
母艦(ゲストOS)からmicroSDカードを抜きBeagleBone Blackに挿入して起動を行う。
母艦(ホストOS)からUSBシリアルTTLケーブルを介し、TeraTermでシリアル接続を行い起動を試みる。
115200bps 8bit; non parity; stop bit 1; フロー制御なし

U-Boot 2014.04-00015-gb4422bd (Apr 22 2014 - 13:24:29)

I2C:   ready
DRAM:  512 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment

Net:    not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot:  0
gpio: pin 53 (gpio 53) value is 1
mmc0 is current device
gpio: pin 54 (gpio 54) value is 1
SD/MMC found on device 0
reading uEnv.txt
1704 bytes read in 5 ms (332 KiB/s)
gpio: pin 55 (gpio 55) value is 1
Loaded environment from uEnv.txt
Importing environment from mmc ...
Checking if uenvcmd is set ...
gpio: pin 56 (gpio 56) value is 1
Running uenvcmd ...
reading zImage
4408152 bytes read in 320 ms (13.1 MiB/s)
reading initrd.img
2957458 bytes read in 213 ms (13.2 MiB/s)
reading /dtbs/am335x-boneblack.dtb
25814 bytes read in 10 ms (2.5 MiB/s)
Kernel image @ 0x82000000 [ 0x000000 - 0x434358 ]
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
   Using Device Tree in place at 88000000, end 880094d5

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[    0.359478] omap2_mbox_probe: platform not supported
[    0.366038] tps65217-bl tps65217-bl: no platform data provided
[    0.430819] bone-capemgr bone_capemgr.9: slot #0: No cape found
[    0.467926] bone-capemgr bone_capemgr.9: slot #1: No cape found
[    0.505034] bone-capemgr bone_capemgr.9: slot #2: No cape found
[    0.542144] bone-capemgr bone_capemgr.9: slot #3: No cape found
[    0.557118] bone-capemgr bone_capemgr.9: slot #6: BB-BONELT-HDMIN conflict P8.45 (#5:BB-BONELT-HDMI)
[    0.566740] bone-capemgr bone_capemgr.9: slot #6: Failed verification
[    0.581856] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' failed
[    0.589133] bone-capemgr bone_capemgr.9: loader: failed to load slot-6 BB-BONELT-HDMIN:00A0 (prio 2)
[    0.653750] pinctrl-single 44e10800.pinmux: pin 44e10854 already requested by 44e10800.pinmux; cannot claim for gpio-leds.8
[    0.665430] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status -22
[    0.672730] pinctrl-single 44e10800.pinmux: could not request pin 21 on device pinctrl-single
Loading, please wait...
modprobe: chdir(3.8.13-00770-g94e9a39): No such file or directory
modprobe: chdir(3.8.13-00770-g94e9a39): No such file or directory
modprobe: chdir(3.8.13-00770-g94e9a39): No such file or directory
systemd-fsck[211]: rootfs: clean, 79777/221312 files, 422702/917504 blocks

Debian GNU/Linux 7 beaglebone ttyO0

default username:password is [debian:temppwd]

Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian

The IP Address for wlan0 is: 192.168.1.15
The IP Address for usb0 is: 192.168.7.2
beaglebone login: debian
Password:
Last login: Sat Sep 20 14:25:52 UTC 2014 on ttyO0
Linux beaglebone 3.8.13-00770-g94e9a39 #1 SMP Sun Sep 14 01:39:15 JST 2014 armv7l

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
debian@beaglebone:~$ uname -r
3.8.13-00770-g94e9a39

Kernel Versionが3.8.13-00770-g94e9a39に変わっている事を確認。
以下のアラートが出るのはinitrd.imgが古い為。

modprobe: chdir(3.8.13-00770-g94e9a39): No such file or directory
modprobe: chdir(3.8.13-00770-g94e9a39): No such file or directory
modprobe: chdir(3.8.13-00770-g94e9a39): No such file or directory

引き続きinitrd.imgの更新を行う。

debian@beaglebone:/$ cd /boot/
debian@beaglebone:/boot$ cd uboot/
debian@beaglebone:/boot/uboot$ ls -la
total 7798
drwxr-xr-x 10 root root   16384 Jan  1  1970 .
drwxr-xr-x  3 root root    4096 May 15 02:57 ..
drwxr-xr-x  2 root root    2048 May 14 22:19 App
-rwxr-xr-x  1 root root     223 May 14 22:19 autorun.inf
drwxr-xr-x  2 root root    2048 May 14 22:18 debug
drwxr-xr-x  4 root root    2048 May 14 22:19 Docs
drwxr-xr-x  5 root root    2048 May 14 22:19 Drivers
drwxr-xr-x  2 root root    2048 Sep 14 23:28 dtbs
-rwxr-xr-x  1 root root      51 May 14 22:18 ID.txt
-rwxr-xr-x  1 root root 2957458 Sep 20  2014 initrd.img
drwxr-xr-x  3 root root    2048 Sep 14 23:17 kernel3.8.13.bone.50
-rwxr-xr-x  1 root root   41174 May 14 22:19 LICENSE.txt
-rwxr-xr-x  1 root root   82424 May 14 22:18 MLO
-rwxr-xr-x  1 root root   16822 May 14 22:19 README.htm
-rwxr-xr-x  1 root root     292 May 14 22:19 README.md
drwxr-xr-x  2 root root    2048 May 14 22:19 scripts
-rwxr-xr-x  1 root root     313 May 14 22:18 SOC.sh
-rwxr-xr-x  1 root root   16822 May 14 22:19 START.htm
drwxr-xr-x  2 root root    2048 Sep 14 23:43 System Volume Information
-rwxr-xr-x  1 root root  401704 May 14 22:18 u-boot.img
-rwxr-xr-x  1 root root    1704 Sep 15 01:30 uEnv.txt
-rwxr-xr-x  1 root root    1672 May 14 22:18 uEnv.txt~
-rwxr-xr-x  1 root root 4408152 Sep 14 23:11 zImage
debian@beaglebone:/boot/uboot$ sudo update-initramfs -c -k 3.8.13-00770-g94e9a39

update-initramfs: Generating /boot/initrd.img-3.8.13-00770-g94e9a39
debian@beaglebone:/boot$ ls -la ../
total 6812
drwxr-xr-x  3 root root    4096 Sep 20 14:52 .
drwxr-xr-x 22 root root    4096 May 15 02:46 ..
-rw-r--r--  1 root root 6950530 Sep 20 14:52 initrd.img-3.8.13-00770-g94e9a39
drwxr-xr-x 10 root root   16384 Jan  1  1970 uboot
debian@beaglebone:/boot/uboot$ sudo rm initrd.img
debian@beaglebone:/boot/uboot$ sudo mv ../initrd.img-3.8.13-00770-g94e9a39 ./initrd.img
debian@beaglebone:/boot/uboot$ ls -la
total 11696
drwxr-xr-x 10 root root   16384 Sep 20 15:01 .
drwxr-xr-x  3 root root    4096 Sep 20 15:01 ..
drwxr-xr-x  2 root root    2048 May 14 22:19 App
-rwxr-xr-x  1 root root     223 May 14 22:19 autorun.inf
drwxr-xr-x  2 root root    2048 May 14 22:18 debug
drwxr-xr-x  4 root root    2048 May 14 22:19 Docs
drwxr-xr-x  5 root root    2048 May 14 22:19 Drivers
drwxr-xr-x  2 root root    2048 Sep 14 23:28 dtbs
-rwxr-xr-x  1 root root      51 May 14 22:18 ID.txt
-rwxr-xr-x  1 root root 6950530 Sep 20 14:52 initrd.img
drwxr-xr-x  3 root root    2048 Sep 14 23:17 kernel3.8.13.bone.50
-rwxr-xr-x  1 root root   41174 May 14 22:19 LICENSE.txt
-rwxr-xr-x  1 root root   82424 May 14 22:18 MLO
-rwxr-xr-x  1 root root   16822 May 14 22:19 README.htm
-rwxr-xr-x  1 root root     292 May 14 22:19 README.md
drwxr-xr-x  2 root root    2048 May 14 22:19 scripts
-rwxr-xr-x  1 root root     313 May 14 22:18 SOC.sh
-rwxr-xr-x  1 root root   16822 May 14 22:19 START.htm
drwxr-xr-x  2 root root    2048 Sep 14 23:43 System Volume Information
-rwxr-xr-x  1 root root  401704 May 14 22:18 u-boot.img
-rwxr-xr-x  1 root root    1704 Sep 15 01:30 uEnv.txt
-rwxr-xr-x  1 root root    1672 May 14 22:18 uEnv.txt~
-rwxr-xr-x  1 root root 4408152 Sep 14 23:11 zImage
debian@beaglebone:/boot/uboot$ cd ..
debian@beaglebone:/boot$ ls -la
total 24
drwxr-xr-x  3 root root  4096 Sep 20 15:01 .
drwxr-xr-x 22 root root  4096 May 15 02:46 ..
drwxr-xr-x 10 root root 16384 Sep 20 15:01 uboot

initrd.imgが2957458Byteから6950530Byteに膨れ上がってしまっている。
initrd.imgの作り方が間違っているのかもしれないし、kernel configのせいかもしれない。
とりあえずパーティション容量内に収まっているので良しとする。

rebootを行う。

debian@beaglebone:/boot$ sudo reboot

Broadcast message from root@beaglebone (ttyO0) (Sat Sep 20 15:02:18 2014):
The system is going down for reboot NOW!
debian@beaglebone:/boot$ Sending SIGTERM to remaining processes...
Sending SIGKILL to remaining processes...
Unmounting file systems.
Unmounted /sys/kernel/security.
Unmounted /dev/mqueue.
Unmounted /sys/kernel/debug.
Disabling swaps.
Detaching loop devices.
Detaching DM devices.
[  605.948908] (NULL device *): gadget not registered.
[  605.970664] Restarting system.

U-Boot SPL 2014.04-00015-gb4422bd (Apr 22 2014 - 13:24:29)
reading args
spl_load_image_fat_os: error reading image args, err - -1
reading u-boot.img
reading u-boot.img


U-Boot 2014.04-00015-gb4422bd (Apr 22 2014 - 13:24:29)

I2C:   ready
DRAM:  512 MiB
NAND:  0 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - readenv() failed, using default environment

Net:    not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot:  0
gpio: pin 53 (gpio 53) value is 1
mmc0 is current device
gpio: pin 54 (gpio 54) value is 1
SD/MMC found on device 0
reading uEnv.txt
1704 bytes read in 5 ms (332 KiB/s)
gpio: pin 55 (gpio 55) value is 1
Loaded environment from uEnv.txt
Importing environment from mmc ...
Checking if uenvcmd is set ...
gpio: pin 56 (gpio 56) value is 1
Running uenvcmd ...
reading zImage
4408152 bytes read in 322 ms (13.1 MiB/s)
reading initrd.img
6950530 bytes read in 419 ms (15.8 MiB/s)
reading /dtbs/am335x-boneblack.dtb
25814 bytes read in 11 ms (2.2 MiB/s)
Kernel image @ 0x82000000 [ 0x000000 - 0x434358 ]
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
   Using Device Tree in place at 88000000, end 880094d5

Starting kernel ...

Uncompressing Linux... done, booting the kernel.
[    0.661679] omap2_mbox_probe: platform not supported
[    0.668288] tps65217-bl tps65217-bl: no platform data provided
[    0.733567] bone-capemgr bone_capemgr.9: slot #0: No cape found
[    0.770674] bone-capemgr bone_capemgr.9: slot #1: No cape found
[    0.807782] bone-capemgr bone_capemgr.9: slot #2: No cape found
[    0.844892] bone-capemgr bone_capemgr.9: slot #3: No cape found
[    0.859831] bone-capemgr bone_capemgr.9: slot #6: BB-BONELT-HDMIN conflict P8.45 (#5:BB-BONELT-HDMI)
[    0.869436] bone-capemgr bone_capemgr.9: slot #6: Failed verification
[    0.884568] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' failed
[    0.891845] bone-capemgr bone_capemgr.9: loader: failed to load slot-6 BB-BONELT-HDMIN:00A0 (prio 2)
[    0.956494] pinctrl-single 44e10800.pinmux: pin 44e10854 already requested by 44e10800.pinmux; cannot claim for gpio-leds.8
[    0.968177] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status -22
[    0.975472] pinctrl-single 44e10800.pinmux: could not request pin 21 on device pinctrl-single
Loading, please wait...
Scanning for Btrfs filesystems
systemd-fsck[213]: rootfs: clean, 79967/221312 files, 426975/917504 blocks

Debian GNU/Linux 7 beaglebone ttyO0

default username:password is [debian:temppwd]

Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian

The IP Address for wlan0 is: 192.168.1.15
The IP Address for usb0 is: 192.168.7.2
beaglebone login:

initrd.img理由のアラートは消えた。

相変わらず以下のfailedが出ているが気にしない事にする。

[    0.884568] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' failed

なぜかBBBからNFSがマウントできなくなっている。

debian@beaglebone:~$ sudo mount 192.168.1.19:/home/temp-host/nfsroot /mnt/hostnfs
mount: wrong fs type, bad option, bad superblock on 192.168.1.19:/home/temp-host/nfsroot,
       missing codepage or helper program, or other error
       (for several filesystems (e.g. nfs, cifs) you might
       need a /sbin/mount. helper program)
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

dmesgを見ても理由が良く判らない。
google検索すると似たトラブルが出ていて、nfs-commonをインストールすると解決した報告があった。

debian@beaglebone:~$ sudo apt-get install nfs-common
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  libgssglue1 libnfsidmap2 libtirpc1 rpcbind
Suggested packages:
  open-iscsi watchdog
The following NEW packages will be installed:
  libgssglue1 libnfsidmap2 libtirpc1 nfs-common rpcbind
0 upgraded, 5 newly installed, 0 to remove and 0 not upgraded.
Need to get 426 kB of archives.
After this operation, 1053 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Get:1 http://ftp.us.debian.org/debian/ wheezy/main libgssglue1 armhf 0.4-2 [21.6 kB]
Get:2 http://ftp.us.debian.org/debian/ wheezy/main libnfsidmap2 armhf 0.25-4 [34.4 kB]
Get:3 http://ftp.us.debian.org/debian/ wheezy/main libtirpc1 armhf 0.2.2-5 [72.0 kB]
Get:4 http://ftp.us.debian.org/debian/ wheezy/main rpcbind armhf 0.2.0-8 [40.0 kB]
Get:5 http://ftp.us.debian.org/debian/ wheezy/main nfs-common armhf 1:1.2.6-4 [258 kB]
Fetched 426 kB in 7s (58.0 kB/s)
Selecting previously unselected package libgssglue1:armhf.
(Reading database ... 61224 files and directories currently installed.)
Unpacking libgssglue1:armhf (from .../libgssglue1_0.4-2_armhf.deb) ...
Selecting previously unselected package libnfsidmap2:armhf.
Unpacking libnfsidmap2:armhf (from .../libnfsidmap2_0.25-4_armhf.deb) ...
Selecting previously unselected package libtirpc1:armhf.
Unpacking libtirpc1:armhf (from .../libtirpc1_0.2.2-5_armhf.deb) ...
Selecting previously unselected package rpcbind.
Unpacking rpcbind (from .../rpcbind_0.2.0-8_armhf.deb) ...
Selecting previously unselected package nfs-common.
Unpacking nfs-common (from .../nfs-common_1%3a1.2.6-4_armhf.deb) ...
Processing triggers for man-db ...
Setting up libgssglue1:armhf (0.4-2) ...
Setting up libnfsidmap2:armhf (0.25-4) ...
Setting up libtirpc1:armhf (0.2.2-5) ...
Setting up rpcbind (0.2.0-8) ...
[ ok ] Starting rpcbind (via systemctl): rpcbind.service.
Setting up nfs-common (1:1.2.6-4) ...

Creating config file /etc/idmapd.conf with new version

Creating config file /etc/default/nfs-common with new version
Adding system user `statd' (UID 109) ...
Adding new user `statd' (UID 109) with group `nogroup' ...
Not creating home directory `/var/lib/nfs'.
[ ok ] Starting nfs-common (via systemctl): nfs-common.service.
debian@beaglebone:~$

少し時間がかかるがインストールできた。
BBB側でnfsのmountを試みる。

debian@beaglebone:~$ sudo mount 192.168.1.19:/home/temp-host/nfsroot /mnt/hostnfs
debian@beaglebone:~$ mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=62919,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620)
tmpfs on /run type tmpfs (rw,nosuid,relatime,size=102072k,mode=755)
/dev/mmcblk0p2 on / type ext4 (rw,noatime,errors=remount-ro,data=ordered)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,relatime)
tmpfs on /sys/fs/cgroup type tmpfs (rw,nosuid,nodev,noexec,relatime,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=24,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
tmpfs on /run/user type tmpfs (rw,nosuid,nodev,noexec,relatime,size=102400k,mode=755)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
securityfs on /sys/kernel/security type securityfs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
/dev/mmcblk0p1 on /boot/uboot type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/mmcblk1p2 on /media/rootfs type ext4 (rw,nosuid,nodev,relatime,data=ordered,uhelper=udisks)
/dev/mmcblk1p1 on /media/boot type vfat (rw,nosuid,nodev,relatime,uid=1000,gid=1002,fmask=0022,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
192.168.1.19:/home/temp-host/nfsroot on /mnt/hostnfs type nfs4 (rw,relatime,vers=4.0,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=192.168.1.15,local_lock=none,addr=192.168.1.19)
debian@beaglebone:~$ cd /mnt/hostnfs/
debian@beaglebone:/mnt/hostnfs$ touch /mnt/hostnfs/test.txt
debian@beaglebone:/mnt/hostnfs$

ホスト側でもtest.txtが生成されている事を確認。
nfsがmountできる事は確認できた。
kernelを差し替える前と後で、設定が異なる部分がどうもあるようだ。
ただ、細かく調べる時間は無いのでとりあえず問題毎に対処するか諦めることとする。

何にせよソースコードと対応の取れたKernel環境一式が出来上がったので、必要に応じてkernelを弄れるようになった。

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