第5章 起動と終了

5.1. 起動

Armadillo-IoTに電源を接続すると、シリアル通信ソフトウェアには次のように表示されます。

Hermit-At v3.5.0 (armadillo-iotg-std) compiled at 20:38:28, Jun 12 2015
hermit> 

図5.1 電源投入直後のログ


Linuxシステムを起動するには、次のように "boot"コマンドを実行してください。コマンドを実行するとブートローダーがLinuxシステムを起動させます。シリアル通信ソフトウェアにはLinuxの起動ログが表示されます。

hermit> boot
Uncompressing  kernel...........................................................
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done.
Uncompressing ramdisk...........................................................
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...........................................................done.
Booting Linux on physical CPU 0x0
Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Initializing cgroup subsys cpuacct
Linux version 3.14.36-at1 (atmark@atde5) (gcc version 4.6.3 (Debian 4.6.3-14atma
rk1) ) #1 PREEMPT Wed Jun 17 17:30:18 JST 2015
CPU: ARM926EJ-S [41069264] revision 4 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: Armadillo-410
Memory policy: Data cache writeback
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: console=ttymxc1,115200 root=/dev/ram0
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
allocated 262144 bytes of page_cgroup
please try 'cgroup_disable=memory' option if you don't want memory cgroups
Memory: 67364K/131072K available (4833K kernel code, 282K rwdata, 1628K rodata,
236K init, 295K bss, 63708K reserved)
Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    vmalloc : 0xc8800000 - 0xff000000   ( 872 MB)
    lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
    modules : 0xbf000000 - 0xc0000000   (  16 MB)
      .text : 0xc0008000 - 0xc06579e0   (6463 kB)
      .init : 0xc0658000 - 0xc069310c   ( 237 kB)
      .data : 0xc0694000 - 0xc06da90c   ( 283 kB)
       .bss : 0xc06da90c - 0xc072454c   ( 296 kB)
Preemptible hierarchical RCU implementation.
NR_IRQS:16 nr_irqs:16 16
MXC IRQ initialized
Switching to timer-based delay loop
sched_clock: 32 bits at 66MHz, resolution 15ns, wraps every 64585974768ns
Console: colour dummy device 80x30
Calibrating delay loop (skipped), value calculated using timer frequency.. 133.0
0 BogoMIPS (lpj=665000)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
Initializing cgroup subsys memory
Initializing cgroup subsys devices
Initializing cgroup subsys freezer
Initializing cgroup subsys blkio
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0x80494338 - 0x80494390
devtmpfs: initialized
pinctrl core: initialized pinctrl subsystem
regulator-dummy: no parameters
NET: Registered protocol family 16
DMA: preallocated 256 KiB pool for atomic coherent allocations
imx25-pinctrl imx25-pinctrl.0: initialized IMX pinctrl driver
bio: create slab <bio-0> at 0
adc081c Vref: at 3300 mV
eSDHC1 Vcc: at 3300 mV
eSDHC2 Vcc: at 3300 mV
USB VBUS: at 5000 mV
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
pca953x 3-0071: interrupt support not compiled in
i2c-gpio i2c-gpio.3: using pins 17 (SDA) and 18 (SCL)
i2c-gpio i2c-gpio.4: using pins 66 (SDA) and 65 (SCL)
i2c i2c-0: IMX I2C adapter registered
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@l
inux.it>
PTP clock support registered
Advanced Linux Sound Architecture Driver Initialized.
No add-on expansion board detected at CON1.
No add-on expansion board detected at CON2.
Switched to clocksource mxc_timer1
NET: Registered protocol family 2
TCP established hash table entries: 1024 (order: 0, 4096 bytes)
TCP bind hash table entries: 1024 (order: 0, 4096 bytes)
TCP: Hash tables configured (established 1024 bind 1024)
TCP: reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
NET: Registered protocol family 1
Trying to unpack rootfs image as initramfs...
rootfs image is not initramfs (junk in compressed archive); looks like an initrd
Freeing initrd memory: 54972K (c1000000 - c45af000)
futex hash table entries: 256 (order: -1, 3072 bytes)
audit: initializing netlink subsys (disabled)
audit: type=2000 audit(1.609:1): initialized
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
msgmni has been set to 238
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
imx-sdma imx25-sdma: loaded firmware 1.0
imx-sdma imx25-sdma: initialized
imx21-uart.1: ttymxc1 at MMIO 0x43f94000 (irq = 48, base_baud = 7500000) is a IM
X
console [ttymxc1] enabled
brd: module loaded
loop: module loaded
physmap platform flash device: 02000000 at a0000000
physmap-flash: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x0000
89 Chip ID 0x00891c
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Intel/Sharp Extended Query Table at 0x010A
Using buffer write method
Using auto-unlock on power-up/resume
cfi_cmdset_0001: Erase suspend on write enabled
Creating 4 MTD partitions on "physmap-flash":
0x000000000000-0x000000020000 : "nor.bootloader"
0x000000020000-0x000000420000 : "nor.kernel"
0x000000420000-0x000001f00000 : "nor.userland"
0x000001f00000-0x000002000000 : "nor.config"
libphy: fec_enet_mii_bus: probed
PPP generic driver version 2.4.2
usbcore: registered new interface driver cdc_ether
usbcore: registered new interface driver net1080
usbcore: registered new interface driver cdc_subset
usbcore: registered new interface driver sierra_net
usbcore: registered new interface driver cdc_ncm
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
usbcore: registered new interface driver cdc_acm
cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
usbcore: registered new interface driver usb-storage
usbcore: registered new interface driver usbserial
usbcore: registered new interface driver sierra
usbserial: USB Serial support registered for Sierra USB modem
ci_hdrc ci_hdrc.0: EHCI Host Controller
ci_hdrc ci_hdrc.0: new USB bus registered, assigned bus number 1
ci_hdrc ci_hdrc.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
ci_hdrc ci_hdrc.1: EHCI Host Controller
ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 2
ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
rtc-s35390a 3-0030: rtc core: registered rtc-s35390a as rtc0
i2c /dev entries driver
lm75 3-0048: hwmon0: sensor 'lm75b'
imx2-wdt imx2-wdt.0: timeout 60 sec (nowayout=0)
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
sdhci-pltfm: SDHCI platform and OF driver helper
mmc0: no vqmmc regulator found
mmc0: SDHCI controller on sdhci-esdhc-imx25.0 [sdhci-esdhc-imx25.0] using DMA
mmc1: no vqmmc regulator found
mmc1: SDHCI controller on sdhci-esdhc-imx25.1 [sdhci-esdhc-imx25.1] using DMA
usb 2-1: new low-speed USB device number 2 using ci_hdrc
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
usbcore: registered new interface driver snd-usb-audio
usbcore: registered new interface driver snd-usb-caiaq
oprofile: no performance counters
oprofile: using timer interrupt.
Netfilter messages via NETLINK v0.30.
nf_conntrack version 0.5.0 (1911 buckets, 7644 max)
ipip: IPv4 over IPv4 tunneling driver
gre: GRE over IPv4 demultiplexor driver
ip_gre: GRE over IPv4 tunneling driver
ip_tables: (C) 2000-2006 Netfilter Core Team
TCP: cubic registered
Initializing XFRM netlink socket
NET: Registered protocol family 10
ip6_tables: (C) 2000-2006 Netfilter Core Team
sit: IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
NET: Registered protocol family 15
registered taskstats version 1
regulator-dummy: incomplete constraints, leaving on
input: gpio-keys as /devices/platform/gpio-keys/input/input0
input: gpio-keys-polled as /devices/platform/gpio-keys-polled/input/input1
rtc-s35390a 3-0030: setting system clock to 2015-06-18 04:25:40 UTC (1434601540)
ALSA device list:
  No soundcards found.
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 54974KiB [1 disk] into ram disk... done.
usb 2-1: new full-speed USB device number 3 using ci_hdrc
cdc_acm 2-1:1.0: This device cannot do calls on its own. It is not a modem.
cdc_acm 2-1:1.0: ttyACM0: USB ACM device
usb 2-1: USB disconnect, device number 3
usb 2-1: new full-speed USB device number 4 using ci_hdrc
usb 2-1: not running at top speed; connect to a high speed hub
usb 2-1: can't set config #1, error -110
VFS: Mounted root (ext2 filesystem) on device 1:0.
devtmpfs: mounted
Freeing unused kernel memory: 236K (c0658000 - c0693000)
Mounting proc: done
Starting fsck for root filesystem.
fsck 1.25 (20-Sep-2001)
/dev/ram0: clean, 3291/3976 files, 49858/54974 blocks
Checking root filesystem: done
Remounting root rw: done
Mounting sysfs: done
Mounting tmpfs on /dev: done
Mounting tmpfs on /run: done
Cleaning up system: done
Running local start scripts.
usb 2-1: USB disconnect, device number 4
Starting the hotplug events dispatcher udevd:done
Synthesizing the initial hotplug events: 
usb 2-1: new full-speed USB device number 5 using ci_hdrc
usb 2-1: not running at top speed; connect to a high speed hub
cdc_acm 2-1:1.0: This device cannot do calls on its own. It is not a modem.
cdc_acm 2-1:1.0: ttyACM0: USB ACM device
cdc_acm 2-1:1.2: This device cannot do calls on its own. It is not a modem.
cdc_acm 2-1:1.2: ttyACM1: USB ACM device
cdc_acm 2-1:1.4: This device cannot do calls on its own. It is not a modem.
cdc_acm 2-1:1.4: ttyACM2: USB ACM device
cdc_ether 2-1:1.6 eth1: register 'cdc_ether' at usb-ci_hdrc.1-1, CDC Ethernet De
vice, 00:00:11:12:13:14
cdc_ether 2-1:1.8 eth2: register 'cdc_ether' at usb-ci_hdrc.1-1, CDC Ethernet De
vice, 00:00:11:12:13:16
cdc_ether 2-1:1.10 eth3: register 'cdc_ether' at usb-ci_hdrc.1-1, CDC Ethernet D
evice, 00:00:11:12:13:18
done
Loading /etc/config: done
Changing file permissions: done
Configure /home/ftp: done
Mounting devpts: done
Starting syslogd: done
Starting klogd: done
Loading kernel module: awl13_sdio
awl13: Version 3.0.2 Load.
Starting basic firewall: done
Setting hostname: done
Configuring network interfaces: fec imx25-fec.0 eth0: Freescale FEC PHY driver [
SMSC LAN8710/LAN8720] (mii_bus:phy_addr=imx25-fec-1:00, irq=-1)
IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
udhcpc (v1.20.2) started
Sending discover...
libphy: imx25-fec-1:00 - Link is Up - 100/Full
IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Sending discover...
Sending select for 192.0.2.100...
Lease of 192.0.2.100 obtained, lease time 86400
done
Starting inetd: done
Starting lighttpd: done
Creating avahi.services: done
Starting avahi.daemon: done
random: avahi-daemon urandom read with 64 bits of entropy available
Mounting ramfs /home/ftp/pub: done
Running local start script (/etc/config/rc.local).

atmark-dist v1.41.0 (AtmarkTechno/Armadillo-IoTG-Std)
Linux 3.14.36-at1 [armv5tejl arch]

armadillo-iotg login:  

図5.2 起動ログ


[ティップ]

Armadillo-IoTの起動状態をユーザーLEDから確認することができます。このため、Armadillo-IoTにUSBシリアル変換アダプタを接続せずに電源を投入した場合でも、Linuxの起動を確認することができます。

起動状態ユーザーLED1ユーザーLED2ユーザーLED3ユーザーLED4
ブートローダーが保守モード点灯消灯消灯消灯
Linuxの起動中点灯点灯消灯消灯
Linuxが起動完了点灯消灯消灯消灯

ユーザーLEDの位置については、図6.29「ユーザーLEDの位置」を参照してください。

[注記]

Armadillo-IoTの起動後に表示される次のメッセージは、エラーメッセージではありません。

random: nonblocking pool is initialized

このメッセージは、/dev/urandomが内部的に使用するプール領域の初期化完了を示します。

5.2. ログイン

起動が完了するとログインプロンプトが表示されます。表5.1「シリアルコンソールログイン時のユーザ名とパスワード」に示すユーザでログインすることができます。

表5.1 シリアルコンソールログイン時のユーザ名とパスワード

ユーザ名パスワード権限
rootrootrootユーザ
guest(なし)一般ユーザ

5.3. 終了方法

安全に終了させる場合は、次のようにコマンドを実行し、「System halted.」と表示されたのを確認してから電源を切断します。

[armadillo ~]# halt
[armadillo ~]#
System is going down for system reboot now.

Starting local stop scripts.
Syncing all filesystems: done
Unmounting all filesystems: umount: udev busy - remounted read-only
umount: devtmpfs busy - remounted read-only
done
The system is going down NOW!
Sent SIGTERM to all processes
Sent SIGKILL to all processesimx2-wdt imx2-wdt.0: Device shutdown: Expect reboot!
reboot: System halted

図5.3 終了方法


SDカードなどのストレージをマウントしていない場合は、電源を切断し終了させることもできます。

[警告]

「System halted.」と表示されてから約128秒後、Armadillo-IoTは自動的に再起動します。

[警告]

ストレージにデータを書き込んでいる途中に電源を切断した場合、ファイルシステム、及び、データが破損する恐れがあります。ストレージをアンマウントしてから電源を切断するようにご注意ください。