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[メモ] RaspberryPi3のusb/net boot (2017年1月)

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概要

  • 最近、nextブランチから、masterに取り込まれたっぽい。
    ので、rpi-updateで、BRANCH=nextを入れなくても良いはず。
  • https://github.com/raspberrypi/firmware/commits/master

    (2017-01-10)[e44f66a] firmware: Add usb/net support from next branch
    (2017-01-12)[6df93de] firmware: Fix usb/net boot issue

  • とりあえず、すぐできる、USB起動のみ確認。

関連

環境

  • Raspberry Pi 3 model B
  • Raspbian: 2017-01-11-raspbian-jessie-lite.img
  • microSD カードリーダ

手順

- これ→ "らずぱい3で、USBストレージからブート(SDなし)" にしたがっていく。

  • sudo rpi-update
    のとこだけ変更。
  • microSDの/boot/cmdline.txtと、/etc/fstabを変更

    mmcblk=>sdaみたいな
    sudo sed -i "s,root=/dev/mmcblk0p2,root=/dev/sda2," /boot/cmdline.txt
    sudo sed -i "s,/dev/mmcblk0p,/dev/sda," /etc/fstab
    sudo sync
    sudo poweroff
    
  • ラズパイにささってるmicroSDをUSBカードリーダーにさして、らずぱいのUSBポートに。

  • 電源ケーブルを抜き差しして、待つ。
    =>起動した :-)

その他

実行例
pi@raspberrypi:~ $ sudo rpi-update 
 *** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom
 *** Performing self-update
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 12016  100 12016    0     0  75170      0 --:--:-- --:--:-- --:--:-- 75572
 *** Relaunching after update
 *** Raspberry Pi firmware updater by Hexxeh, enhanced by AndrewS and Dom
 *** We're running for the first time
 *** Backing up files (this will take a few minutes)
 *** Backing up firmware
 *** Backing up modules 4.4.34-v7+
This update bumps to rpi-4.4.y linux tree
Be aware there could be compatibility issues with some drivers
Discussion here:
https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=144087
##############################################################
 *** Downloading specific firmware revision (this will take a few minutes)
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   168    0   168    0     0    456      0 --:--:-- --:--:-- --:--:--   456
100 51.9M  100 51.9M    0     0   889k      0  0:00:59  0:00:59 --:--:-- 1431k
 *** Updating firmware
 *** Updating kernel modules
 *** depmod 4.4.43-v7+
 *** depmod 4.4.43+
 *** Updating VideoCore libraries
 *** Using HardFP libraries
 *** Updating SDK
 *** Running ldconfig
 *** Storing current firmware revision
 *** Deleting downloaded files
 *** Syncing changes to disk
 *** If no errors appeared, your firmware was successfully updated to a12b699d642096023a2b3009bb88ca82ad0baef4
 *** A reboot is needed to activate the new firmware
pi@raspberrypi:~ $ vcgencmd otp_dump | grep 17:
17:3020000a
pi@raspberrypi:~ $ 
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