Differences

This shows you the differences between two versions of the page.

--- bootstrap [2017/06/27 12:47]
1.241.172.144
+++ bootstrap [2017/07/05 19:54] (current)
1.241.172.144
@@ Line 14: / Line 14: @@
 나는 이를 buildroot 시에 사용했던 ~/SAMA5D4 에 복사한후 여기에서 압축해제 했다.
-{{wiki:atmel_sama5d42:bootstrap-unpack.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-unpack.jpg}}
 SAMA5D4/at91bootstrap-master/board 의 내용을 보면 여러 개발 보드가 나온다\\
@@ Line 20: / Line 20: @@
 SAMA5D4/at91bootstrap-master/board/sama5d4_xplained 의 내용을 보면 3개의 config 파일을 볼 수 있다.
-{{wiki:atmel_sama5d42:bootstrap-check-defconfig.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-check-defconfig.jpg}}
 sama5d4_xplaineddf_uboot_secure_defconfig -> serial FLASH에서 부팅하는 설정\\
@@ Line 33: / Line 33: @@
   make mrproper
-{{wiki:atmel_sama5d42:bootstrap-mrproper.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-mrproper.jpg}}
 SAMA5D4x에 xplained 보드의 NAND FLASH에서 부팅으로 설정을 한다.
@@ Line 39: / Line 39: @@
   make sama5d4_xplainednf_uboot_secure_defconfig
-{{wiki:atmel_sama5d42:bootstrap-defconfig.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-defconfig.jpg}}
 menuconfig를 사용해 다시한번 설정을 확인하고 변경한다.\\
@@ Line 46: / Line 46: @@
   make menuconfig
-{{wiki:atmel_sama5d42:bootstrap-menuconfig.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-menuconfig.jpg}}
 우선 기본설정인 xplaned board 와 우리 board 의 memory 크기가 틀리므로 이를 변경한다.
-{{wiki:atmel_sama5d42:bootstrap-memory.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-memory.jpg}}
 DDR-RAM의 크기가 다르므로 이를 변경한다.
-{{wiki:atmel_sama5d42:bootsrap-memory_set.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootsrap-memory_set.jpg}}
-{{wiki:atmel_sama5d42:bootstrap-DDR-set.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-DDR-set.jpg}}
 KHz Crystal 을 사용하므로 이것도 변경한다.
-{{wiki:atmel_sama5d42:bootstrap-clock.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-clock.jpg}}
 내부에 EEPROM도 없으므로 제거한다.
-{{wiki:atmel_sama5d42:bootstrap-eeprom.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-eeprom.jpg}}
@@ Line 99: / Line 99: @@
 나의 경우 linux cross compiler 사용하는 것으로 설정하였다.
-{{wiki:atmel_sama5d42:bootstrap-makefile.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-makefile.jpg}}
 완료되면 bootstrap을 컴파일 한다.
@@ Line 153: / Line 153: @@
   stephanos@stephanos-VirtualBox:~/SAMA5D4/at91bootstrap-master$
-{{wiki:atmel_sama5d42:bootstrap-make-end.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-make-end.jpg}}
@@ Line 159: / Line 159: @@
 .bin파일이다.
-{{wiki:atmel_sama5d42:bootstrap-make-result.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-make-result.jpg}}
 .bin파일은 아트멜툴(SAM-BA) 로 NAND에 저장 할 수 있다.\\
@@ Line 167: / Line 167: @@
 이는 SAMA5D42 Data-sheet, Reference Manual에 내용이 나와 있다.
-{{wiki:atmel_sama5d42:bootstrap-binary-compare.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap-binary-compare.jpg}}
@@ Line 181: / Line 181: @@
 이파일을 다운 받고 압축을 풀면 board에 새로운 폴더가 있음을 확인 할 수 있다.
-{{wiki:atmel_sama5d42:vi_bootstrip_list.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:vi_bootstrip_list.jpg}}
-{{wiki:atmel_sama5d42:vi_bootstrip_board_list.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:vi_bootstrip_board_list.jpg}}
 SAMA5D4/at91bootstrap-vi/board/sama5d4_xplained 의 내용을 보면 3개의 config 파일을 볼 수 있다.
@@ Line 210: / Line 210: @@
   make menuconfig
-{{wiki:atmel_sama5d42:bootstrap_menuconfig.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap_menuconfig.jpg}}
-{{wiki:atmel_sama5d42:bootstrap_menuconfig_change_speed.jpg}}
+{{wiki:atmel_sama5d42:bootstrap:bootstrap_menuconfig_change_speed.jpg}}
 완료되면 bootstrap을 컴파일 한다.
@@ Line 268: / Line 268: @@
 .bin파일은 아트멜툴(SAM-BA) 로 NAND에 저장 할 수 있다.\\
 .pmcc 파일은 일반 ROM-Writer로 NAND에저장 할 때 쓰인다.
+Atmel에서 제공하는 bootstrap 소스를 많이 수정하여 우리 보드에 맞추어 변경 하였다.
+BootStrap-VI.tar 이란 파일로 만들었다.
+{{wiki:atmel_sama5d42:bootstrap:BootStrap-VI.tar}}
+설정 파일은 sama5d4_vi_basenf_uboot_secure_defconfig 이다.
+  make mrproper
+  make sama5d4_vi_basenf_uboot_secure_defconfig
+**중요**
+우리가 사용하는 NAND의 영향으로 CPU의 최대 스피드인 600MHz로 설정되면 NAND의 Access가 제대로 되지 않는다.
+이에 우리는 CPU의 최대 스피드를 528MHz로 설정을 한다.
+추후 이에 대한 수정이 있을 예정이다.
+이에 따라 CPU의 최대 스피드 수정을 한다.
+  make menuconfig
+완료되면 bootstrap을 컴파일 한다.
+  make
+이의 결과를 사용하면 된다.
+이를 사용한 Booting 과정에 대한 Log 이다
+  RomBOOT
+   Bank Address Offset Bits = 0xB ...
+  Target Board Initialized
+  Enabled 32.768KHz OSC
+  Atmel Boot Strap For VI 3.8.7 (2017. 07. 05. (수) 19:24:53 KST)
+  All interrupts redirected to AIC
+  Loading Image Initialized
+  NAND: ONFI not supported
+  NAND: Manufacturer ID: 0xc8, Chip ID: 0xda
+  NAND: Enable On-Die ECC
+  NAND : Bits Of ECC = 4
+  NAND : Bits Of Data = 8
+  NAND : Byte Size Of ECC Base = 512
+  NAND : Byte Size Of Spare = 64
+  NAND : Byte Size Of Page = 2048
+  NAND : Number Of Pages In Block = 64
+  NAND : Number Of Blocks In Unit = 2048
+  NAND : Number Of Units In Device = 1
+  NAND: Image: Copy 80000 bytes from 40000 to 26f00000
+  NAND: Done to load image
+  Jump to u-boot
+  U-Boot 2016.03-linux4sam_5.5 (Jun 30 2017 - 13:22:27 +0900)
+  CPU: SAMA5D42
+  Crystal frequency:       12 MHz
+  CPU clock        :      528 MHz
+  Master clock     :      176 MHz
+  I2C:   ready
+  DRAM:  128 MiB
+  NAND:  NAND chip is not ONFI compliant, assume ecc_bits is 2 in 512 bytes
+MiB
+  MMC:   mci: 0
+  In:    serial
+  Out:   serial
+  Err:   serial
+  Net:   gmac0, usb_ether
+  Error: usb_ether address not set.
+  Hit any key to stop autoboot: 10  9  8  7  6  5  4  3  2  1  0
+  NAND read: device 0 offset 0x180000, size 0x80000
+bytes read: OK
+  NAND read: device 0 offset 0x200000, size 0x600000
+   6291456 bytes read: OK
+  Kernel image @ 0x22000000 [ 0x000000 - 0x3ab468 ]
+  ## Flattened Device Tree blob at 21000000
+     Booting using the fdt blob at 0x21000000
+     Loading Device Tree to 27b21000, end 27b2c237 ... OK
+  Starting kernel ...
+  Booting Linux on physical CPU 0x0
+  Linux version 4.4.68 (stephanos@stephanos-VirtualBox) (gcc version 6.2.1 20161016 (Linaro GCC 6.2-2016.11) ) #5 Tue Jun 27 14:12:33 KST 2017
+  CPU: ARMv7 Processor [410fc051] revision 1 (ARMv7), cr=10c53c7d
+  CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
+  Machine model: Atmel SAMA5D4 VI
+  cma: Failed to reserve 64 MiB
+  Memory policy: Data cache writeback
+  CPU: All CPU(s) started in SVC mode.
+  Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 32512
+  Kernel command line: console=ttyS0,115200 earlyprintk mtdparts=atmel_nand:256k(bootstrap)ro,512k(uboot)ro,256K(env),256k(env_redundent),256k(spare),512k(dtb),6M(kernel)ro,-(rootfs) rootfstype=ubifs ubi.mtd=7 root=ubi0:rootfs
+  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)
+  Memory: 122024K/131072K available (5411K kernel code, 192K rwdata, 1692K rodata, 212K init, 190K bss, 9048K reserved, 0K cma-reserved)
+  Virtual kernel memory layout:
+    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
+    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
+    vmalloc : 0xc8800000 - 0xff800000   ( 880 MB)
+    lowmem  : 0xc0000000 - 0xc8000000   ( 128 MB)
+    modules : 0xbf000000 - 0xc0000000   (  16 MB)
+      .text : 0xc0008000 - 0xc06f803c   (7105 kB)
+      .init : 0xc06f9000 - 0xc072e000   ( 212 kB)
+      .data : 0xc072e000 - 0xc075e280   ( 193 kB)
+       .bss : 0xc075e280 - 0xc078da88   ( 191 kB)
+  NR_IRQS:16 nr_irqs:16 16
+  L2C-310 ID prefetch enabled, offset 2 lines
+  L2C-310 dynamic clock gating enabled, standby mode enabled
+  L2C-310 cache controller enabled, 8 ways, 128 kB
+  L2C-310: CACHE_ID 0x410000c9, AUX_CTRL 0x36020000
+  clocksource: pit: mask: 0x7ffffff max_cycles: 0x7ffffff, max_idle_ns: 10859434279 ns
+  sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 21474836475000000ns
+  Console: colour dummy device 80x30
+  Calibrating delay loop... 351.43 BogoMIPS (lpj=1757184)
+  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)
+  CPU: Testing write buffer coherency: ok
+  Setting up static identity map for 0x20008200 - 0x20008258
+  devtmpfs: initialized
+  VFP support v0.3: implementor 41 architecture 2 part 30 variant 5 rev 1
+  clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
+  futex hash table entries: 256 (order: -1, 3072 bytes)
+  pinctrl core: initialized pinctrl subsystem
+  NET: Registered protocol family 16
+  DMA: preallocated 256 KiB pool for atomic coherent allocations
+  cpuidle: using governor ladder
+  cpuidle: using governor menu
+  AT91: Detected SoC family: sama5d4
+  AT91: Detected SoC: sama5d42, revision 0
+  gpio-at91 fc06a000.gpio: at address c885c000
+  gpio-at91 fc06b000.gpio: at address c885e000
+  gpio-at91 fc06c000.gpio: at address c8872000
+  gpio-at91 fc068000.gpio: at address c8874000
+  gpio-at91 fc06d000.gpio: at address c8876000
+  pinctrl-at91 ahb:apb:pinctrl@fc06a000: initialized AT91 pinctrl driver
+  clocksource: tcb_clksrc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 173750949719 ns
+  at_xdmac f0004000.dma-controller: 16 channels, mapped at 0xc887c000
+  at_xdmac f0014000.dma-controller: 16 channels, mapped at 0xc887e000
+  SCSI subsystem initialized
+  usbcore: registered new interface driver usbfs
+  usbcore: registered new interface driver hub
+  usbcore: registered new device driver usb
+  at91_i2c f8014000.i2c: using dma0chan0 (tx) and dma0chan1 (rx) for DMA transfers
+  at91_i2c f8014000.i2c: AT91 i2c bus driver (hw version: 0x502).
+  media: Linux media interface: v0.10
+  Linux video capture interface: v2.00
+  Advanced Linux Sound Architecture Driver Initialized.
+  clocksource: Switched to clocksource tcb_clksrc
+  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)
+  UDP hash table entries: 256 (order: 0, 4096 bytes)
+  UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
+  NET: Registered protocol family 1
+  RPC: Registered named UNIX socket transport module.
+  RPC: Registered udp transport module.
+  RPC: Registered tcp transport module.
+  RPC: Registered tcp NFSv4.1 backchannel transport module.
+  io scheduler noop registered (default)
+  backlight supply power not found, using dummy regulator
+  f8004000.serial: ttyS5 at MMIO 0xf8004000 (irq = 31, base_baud = 5500000) is a ATMEL_SERIAL
+  fc00c000.serial: ttyS0 at MMIO 0xfc00c000 (irq = 37, base_baud = 5500000) is a ATMEL_SERIAL
+  console [ttyS0] enabled
+  fc010000.serial: ttyS1 at MMIO 0xfc010000 (irq = 38, base_baud = 5500000) is a ATMEL_SERIAL
+  [drm] Initialized drm 1.1.0 20060810
+  panel supply power not found, using dummy regulator
+  brd: module loaded
+  loop: module loaded
+  [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
+  [drm] No driver support for vblank timestamp query.
+  atmel-hlcdc-display-controller atmel-hlcdc-dc: failed to create HLCDC outputs: -517
+  atmel-hlcdc-display-controller atmel-hlcdc-dc: failed to initialize mode setting
+  atmel_nand_nfc 90000000.nfc: NFC is probed.
+  atmel_nand 80000000.nand: Cannot get PMECC lookup table offset, will build a lookup table in runtime.
+  atmel_nand 80000000.nand: Use On Flash BBT
+  atmel_nand 80000000.nand: Using dma0chan2 for DMA transfers.
+  nand: device found, Manufacturer ID: 0xc8, Chip ID: 0xda
+  nand: ESMT NAND 256MiB 3,3V 8-bit
+  nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
+  atmel_nand 80000000.nand: can't detect min. ECC, assume 2 bits in 512 bytes
+  atmel_nand 80000000.nand: Initialize PMECC params, cap: 4, sector: 512
+  atmel_nand 80000000.nand: Using NFC Sram read and write
+  Bad block table not found for chip 0
+  Bad block table not found for chip 0
+  Scanning device for bad blocks
+  Bad block table written to 0x00000ffe0000, version 0x01
+  Bad block table written to 0x00000ffc0000, version 0x01
+cmdlinepart partitions found on MTD device atmel_nand
+  Creating 8 MTD partitions on "atmel_nand":
+x000000000000-0x000000040000 : "bootstrap"
+x000000040000-0x0000000c0000 : "uboot"
+x0000000c0000-0x000000100000 : "env"
+x000000100000-0x000000140000 : "env_redundent"
+x000000140000-0x000000180000 : "spare"
+x000000180000-0x000000200000 : "dtb"
+x000000200000-0x000000800000 : "kernel"
+x000000800000-0x000010000000 : "rootfs"
+  atmel_spi f8010000.spi: version: 0x221
+  atmel_spi f8010000.spi: Using dma0chan3 (tx) and dma0chan4 (rx) for DMA transfers
+  atmel_spi f8010000.spi: Atmel SPI Controller at 0xf8010000 (irq 32)
+  m25p80 spi32766.0: unrecognized JEDEC id bytes: 00,  0,  0
+  atmel_spi fc018000.spi: version: 0x221
+  atmel_spi fc018000.spi: Using dma0chan5 (tx) and dma0chan6 (rx) for DMA transfers
+  atmel_spi fc018000.spi: Atmel SPI Controller at 0xfc018000 (irq 39)
+  CAN device driver interface
+  libphy: MACB_mii_bus: probed
+  macb f8020000.ethernet eth0: Cadence GEM rev 0x00020120 at 0xf8020000 irq 35 (ac:f1:df:5e:4d:3f)
+  macb f8020000.ethernet eth0: attached PHY driver [Micrel KSZ8081 or KSZ8091] (mii_bus:phy_addr=f8020000.etherne:01, irq=181)
+  ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
+  ehci-atmel: EHCI Atmel driver
+  atmel-ehci 600000.ehci: EHCI Host Controller
+  atmel-ehci 600000.ehci: new USB bus registered, assigned bus number 1
+  atmel-ehci 600000.ehci: irq 25, io mem 0x00600000
+  atmel-ehci 600000.ehci: USB 2.0 started, EHCI 1.00
+  usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
+  usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
+  usb usb1: Product: EHCI Host Controller
+  usb usb1: Manufacturer: Linux 4.4.68 ehci_hcd
+  usb usb1: SerialNumber: 600000.ehci
+  hub 1-0:1.0: USB hub found
+  hub 1-0:1.0: 3 ports detected
+  ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
+  ohci-atmel: OHCI Atmel driver
+  at91_ohci 500000.ohci: failed to find sfr node
+  at91_ohci 500000.ohci: USB Host Controller
+  at91_ohci 500000.ohci: new USB bus registered, assigned bus number 2
+  at91_ohci 500000.ohci: irq 25, io mem 0x00500000
+  usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
+  usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
+  usb usb2: Product: USB Host Controller
+  usb usb2: Manufacturer: Linux 4.4.68 ohci_hcd
+  usb usb2: SerialNumber: at91
+  hub 2-0:1.0: USB hub found
+  hub 2-0:1.0: 3 ports detected
+  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 usbserial_generic
+  usbserial: USB Serial support registered for generic
+  usbcore: registered new interface driver ftdi_sio
+  usbserial: USB Serial support registered for FTDI USB Serial Device
+  usbcore: registered new interface driver pl2303
+  usbserial: USB Serial support registered for pl2303
+  rtc rtc0: alarm rollover not handled
+  rtc rtc0: invalid alarm value: 1900-1-1 0:0:0
+  at91_rtc fc0686b0.rtc: rtc core: registered fc0686b0.rtc as rtc0
+  at91_rtc fc0686b0.rtc: AT91 Real Time Clock driver.
+  i2c /dev entries driver
+  AT91: Starting after wakeup
+  sama5d4_wdt fc068640.watchdog: initialized (timeout = 16 sec, nowayout = 0)
+  sdhci: Secure Digital Host Controller Interface driver
+  sdhci: Copyright(c) Pierre Ossman
+  atmel_mci fc000000.mmc: version: 0x600
+  atmel_mci fc000000.mmc: using dma0chan7 for DMA transfers
+  VDD MCI1: supplied by VCC 3V3
+  atmel_mci fc000000.mmc: Atmel MCI controller at 0xfc000000 irq 36, 1 slots
+  sdhci-pltfm: SDHCI platform and OF driver helper
+  leds-gpio leds: Led d10 renamed to d10_1 due to name collision
+  ledtrig-cpu: registered to indicate activity on CPUs
+  atmel_aes fc044000.aes: version: 0x201
+  atmel_aes fc044000.aes: Atmel AES - Using dma1chan0, dma1chan1 for DMA transfers
+  atmel_sha fc050000.sha: version: 0x420
+  atmel_sha fc050000.sha: using dma1chan2 for DMA transfers
+  atmel_sha fc050000.sha: Atmel SHA1/SHA256/SHA224/SHA384/SHA512
+  atmel_tdes fc04c000.tdes: version: 0x702
+  atmel_tdes fc04c000.tdes: using dma1chan3, dma1chan4 for DMA transfers
+  atmel_tdes fc04c000.tdes: Atmel DES/TDES
+  usbcore: registered new interface driver usbhid
+  usbhid: USB HID core driver
+  iio iio:device0: Resolution used: 10 bits
+  iio iio:device0: ADC Touch screen is disabled.
+  NET: Registered protocol family 10
+  sit: IPv6 over IPv4 tunneling driver
+  NET: Registered protocol family 17
+  can: controller area network core (rev 20120528 abi 9)
+  NET: Registered protocol family 29
+  can: raw protocol (rev 20120528)
+  can: broadcast manager protocol (rev 20120528 t)
+  can: netlink gateway (rev 20130117) max_hops=1
+  backlight supply power not found, using dummy regulator
+  panel supply power not found, using dummy regulator
+  [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
+  [drm] No driver support for vblank timestamp query.
+  atmel-hlcdc-display-controller atmel-hlcdc-dc: DRM device successfully registered
+  ubi0: default fastmap pool size: 95
+  ubi0: default fastmap WL pool size: 47
+  ubi0: attaching mtd7
+  random: nonblocking pool is initialized
+  ubi0: scanning is finished
+  ubi0: volume 0 ("rootfs") re-sized from 257 to 1938 LEBs
+  ubi0: attached mtd7 (name "rootfs", size 248 MiB)
+  ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
+  ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
+  ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
+  ubi0: good PEBs: 1980, bad PEBs: 4, corrupted PEBs: 0
+  ubi0: user volume: 1, internal volumes: 1, max. volumes count: 128
+  ubi0: max/mean erase counter: 1/0, WL threshold: 4096, image sequence number: 1513179009
+  ubi0: available PEBs: 0, total reserved PEBs: 1980, PEBs reserved for bad PEB handling: 36
+  input: gpio_keys as /devices/soc0/gpio_keys/input/input0
+  ubi0: background thread "ubi_bgt0d" started, PID 97
+  at91_rtc fc0686b0.rtc: setting system clock to 2012-01-01 00:00:18 UTC (1325376018)
+  ALSA device list:
+    No soundcards found.
+  atmel_usart fc00c000.serial: using dma0chan8 for rx DMA transfers
+  atmel_usart fc00c000.serial: using dma0chan9 for tx DMA transfers
+  UBIFS (ubi0:0): UBIFS: mounted UBI device 0, volume 0, name "rootfs", R/O mode
+  UBIFS (ubi0:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
+  UBIFS (ubi0:0): FS size: 244682752 bytes (233 MiB, 1927 LEBs), journal size 9023488 bytes (8 MiB, 72 LEBs)
+  UBIFS (ubi0:0): reserved for root: 0 bytes (0 KiB)
+  UBIFS (ubi0:0): media format: w4/r0 (latest is w4/r0), UUID 4289B817-B849-426A-8EB4-54E811F89C16, small LPT model
+  VFS: Mounted root (ubifs filesystem) readonly on device 0:14.
+  devtmpfs: mounted
+  Freeing unused kernel memory: 212K (c06f9000 - c072e000)
+  UBIFS (ubi0:0): background thread "ubifs_bgt0_0" started, PID 100
+  devpts: called with bogus options
+  Starting logging: OK
+  Populating /dev using udev: /etc/init.d/S10udev: line 47: can't create /proc/sys/kernel/hotplug: nonexistent directory
+  udevd[114]: starting version 3.2.1
+  udevd[115]: starting eudev-3.2.1
+  done
+  Initializing random number generator... done.
+  Starting system message bus: done
+  Starting network: OK
+  Starting dropbear sshd: OK
+  atmel-hlcdc-display-controller atmel-hlcdc-dc: fb0:  frame buffer device
+  ssh-keygen: generating new host keys: RSA DSA ECDSA ED25519
+  Starting sshd: OK
+  Welcome to Buildroot 2017.02.1
+  buildroot login:

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