iMX6ULL开发板上电启动

bloong

上次已经开箱了，这次开机后看看有什么好玩的东东。开发板是用DC 5V来供电，但没有配电源适配器，作为开发板小达人，手里电源一大堆的，电源买多了也没什么用。上电前要确认BOOT Mode跳冒和Boot Dev拨码是否配置正确，具体可以参考官方的文档 http://wiki.i2som.com/pages/viewpage.action?pageId=2654236 从文档看官方是做了两个版本的，现在硬件更新到V2.1了。然后直接上电就可以了。下面是uboot启动信息，版本还是比较新的，

1. U-Boot 2016.03+ga768050 (Apr 15 2018 - 14:06:05 +0800)
   
2. 
   
3. CPU:   Freescale i.MX6ULL rev1.0 528 MHz (running at 396 MHz)
   
4. CPU:   Commercial temperature grade (0C to 95C) at 37C
   
5. Reset cause: POR
   
6. SOM: i2S-6ULY2 14x14
   
7. Board: i2C-6ULX-B
   
8. Boot device:  NAND
   
9. DRAM:  256 MiB
   
10. NAND:  256 MiB
    
11. MMC:   FSL_SDHC: 0
    
12. *** Warning - bad CRC, using default environment
    
13. 
    
14. In:    serial
    
15. Out:   serial
    
16. Err:   serial
    
17. SOM: i2S-6ULY2 14x14
    
18. Board: i2C-6ULX-B
    
19. Boot device:  NAND
    
20. Net:   Board Net Initialization Failed
    
21. No ethernet found.
    
22. Normal Boot
    

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Linux启动比较长，节选部分就好了。

1. RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
   
2. NR_IRQS:16 nr_irqs:16 16
   
3. mxc_clocksource_init 3000000
   
4. Switching to timer-based delay loop, resolution 333ns
   
5. sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 715827882841ns
   
6. clocksource mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 637086815595 ns
   
7. Console: colour dummy device 80x30
   
8. Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=30000)
   
9. pid_max: default: 32768 minimum: 301
   
10. Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
    
11. Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
    
12. Initializing cgroup subsys memory
    
13. Initializing cgroup subsys devices
    
14. Initializing cgroup subsys freezer
    
15. CPU: Testing write buffer coherency: ok
    
16. /cpus/cpu@0 missing clock-frequency property
    
17. CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
    
18. Setting up static identity map for 0x80008280 - 0x800082d8
    
19. Brought up 1 CPUs
    
20. SMP: Total of 1 processors activated (6.00 BogoMIPS).
    
21. CPU: All CPU(s) started in SVC mode.
    
22. devtmpfs: initialized
    
23. device-tree: Duplicate name in lcdif@021c8000, renamed to "display#1"
    
24. VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
    
25. clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
    
26. futex hash table entries: 256 (order: 2, 16384 bytes)
    
27. pinctrl core: initialized pinctrl subsystem
    
28. NET: Registered protocol family 16
    
29. DMA: preallocated 256 KiB pool for atomic coherent allocations
    
30. cpuidle: using governor ladder
    
31. cpuidle: using governor menu
    
32. hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
    
33. hw-breakpoint: maximum watchpoint size is 8 bytes.
    
34. imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
    
35. imx6ul-pinctrl 2290000.iomuxc-snvs: initialized IMX pinctrl driver
    
36. mxs-dma 1804000.dma-apbh: initialized
    
37. SCSI subsystem initialized
    
38. usbcore: registered new interface driver usbfs
    
39. usbcore: registered new interface driver hub
    
40. usbcore: registered new device driver usb
    
41. Linux video capture interface: v2.00
    
42. pps_core: LinuxPPS API ver. 1 registered
    
43. pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
    
44. PTP clock support registered
    
45. Advanced Linux Sound Architecture Driver Initialized.
    
46. Switched to clocksource mxc_timer1
    
47. NET: Registered protocol family 2
    
48. TCP established hash table entries: 4096 (order: 2, 16384 bytes)
    
49. TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
    
50. TCP: Hash tables configured (established 4096 bind 4096)
    
51. UDP hash table entries: 256 (order: 1, 8192 bytes)
    
52. UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
    
53. NET: Registered protocol family 1
    
54. RPC: Registered named UNIX socket transport module.
    
55. RPC: Registered udp transport module.
    
56. RPC: Registered tcp transport module.
    
57. RPC: Registered tcp NFSv4.1 backchannel transport module.
    
58. Bus freq driver module loaded
    
59. VFS: Disk quotas dquot_6.6.0
    
60. VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
    
61. squashfs: version 4.0 (2009/01/31) Phillip Lougher
    
62. NFS: Registering the id_resolver key type
    
63. Key type id_resolver registered
    
64. Key type id_legacy registered
    
65. jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
    
66. fuse init (API version 7.23)
    
67. io scheduler noop registered
    
68. io scheduler deadline registered
    
69. io scheduler cfq registered (default)
    
70. imx-weim 21b8000.weim: Driver registered.
    
71. backlight supply power not found, using dummy regulator
    
72. 21c8000.lcdif supply lcd not found, using dummy regulator
    
73. mxsfb 21c8000.lcdif: failed to find mxc display driver
    
74. Console: switching to colour frame buffer device 60x34
    
75. mxsfb 21c8000.lcdif: initialized
    
76. imx-sdma 20ec000.sdma: no event needs to be remapped
    
77. imx-sdma 20ec000.sdma: loaded firmware 3.3
    
78. imx-sdma 20ec000.sdma: initialized
    
79. 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 19, base_baud = 5000000) is a IMX
    
80. console [ttymxc0] enabled
    
81. [drm] Initialized drm 1.1.0 20060810
    
82. [drm] Initialized vivante 1.0.0 20120216 on minor 0
    
83. brd: module loaded
    
84. loop: module loaded
    
85. nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
    
86. nand: Micron MT29F2G08ABAEAWP
    
87. nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
    
88. gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5
    
89. Bad block table not found for chip 0
    
90. Bad block table not found for chip 0
    
91. Scanning device for bad blocks
    
92. Bad block table written to 0x00000ffe0000, version 0x01
    
93. Bad block table written to 0x00000ffc0000, version 0x01
    
94. 7 cmdlinepart partitions found on MTD device gpmi-nand
    
95. Creating 7 MTD partitions on "gpmi-nand":
    
96. 0x000000000000-0x000000500000 : "bootloader"
    
97. 0x000000500000-0x000000600000 : "env"
    
98. 0x000000600000-0x000000700000 : "safe"
    
99. 0x000000700000-0x000001700000 : "linux"
    
100. 0x000001700000-0x000003700000 : "recovery"
     
101. 0x000003700000-0x00000cd00000 : "rootfs"
     
102. 0x00000cd00000-0x000010000000 : "data"
     
103. gpmi-nand 1806000.gpmi-nand: driver registered.
     
104. CAN device driver interface
     
105. 20b4000.ethernet supply phy not found, using dummy regulator
     
106. pps pps0: new PPS source ptp0
     
107. fec 20b4000.ethernet (unnamed net_device) (uninitialized): Invalid MAC address: 00:00:00:00:00:00
     
108. fec 20b4000.ethernet (unnamed net_device) (uninitialized): Using random MAC address: 32:53:21:38:ce:8f
     
109. libphy: fec_enet_mii_bus: probed
     
110. fec 20b4000.ethernet eth0: registered PHC device 0
     
111. 2188000.ethernet supply phy not found, using dummy regulator
     
112. pps pps1: new PPS source ptp1
     
113. fec 2188000.ethernet (unnamed net_device) (uninitialized): Invalid MAC address: 00:00:00:00:00:00
     
114. fec 2188000.ethernet (unnamed net_device) (uninitialized): Using random MAC address: 52:dc:43:d7:f3:48
     
115. fec 2188000.ethernet eth1: registered PHC device 1
     
116. ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
     
117. ehci-mxc: Freescale On-Chip EHCI Host driver
     
118. usbcore: registered new interface driver uas
     
119. usbcore: registered new interface driver usb-storage
     
120. usbcore: registered new interface driver usb_ehset_test
     
121. 2184800.usbmisc supply vbus-wakeup not found, using dummy regulator
     
122. 2184000.usb supply vbus not found, using dummy regulator
     
123. 2184200.usb supply vbus not found, using dummy regulator
     
124. ci_hdrc ci_hdrc.1: EHCI Host Controller
     
125. ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
     
126. ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
     
127. hub 1-0:1.0: USB hub found
     
128. hub 1-0:1.0: 1 port detected
     
129. mousedev: PS/2 mouse device common for all mice
     
130. input: 20cc000.snvs:snvs-powerkey as /devices/platform/soc/2000000.aips-bus/20cc000.snvs/20cc000.snvs:snvs-powerkey/input/input0
     
131. input: iMX6UL TouchScreen Controller as /devices/platform/soc/2000000.aips-bus/2040000.tsc/input/input1
     
132. snvs_rtc 20cc000.snvs:snvs-rtc-lp: rtc core: registered 20cc000.snvs:snvs-r as rtc0
     
133. i2c /dev entries driver
     
134. pxp-v4l2 pxp_v4l2: initialized
     
135. sdhci: Secure Digital Host Controller Interface driver
     
136. sdhci: Copyright(c) Pierre Ossman
     
137. sdhci-pltfm: SDHCI platform and OF driver helper
     
138. /soc/aips-bus@02100000/usdhc@02190000: voltage-ranges unspecified
     
139. sdhci-esdhc-imx 2190000.usdhc: Got CD GPIO
     
140. sdhci-esdhc-imx 2190000.usdhc: No vqmmc regulator found
     
141. mmc0: SDHCI controller on 2190000.usdhc [2190000.usdhc] using ADMA
     
142. usbcore: registered new interface driver usbhid
     
143. usbhid: USB HID core driver
     
144. fsl-asrc 2034000.asrc: driver registered
     
145. NET: Registered protocol family 26
     
146. NET: Registered protocol family 10
     
147. sit: IPv6 over IPv4 tunneling driver
     
148. NET: Registered protocol family 17
     
149. bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
     
150. can: controller area network core (rev 20120528 abi 9)
     
151. NET: Registered protocol family 29
     
152. can: raw protocol (rev 20120528)
     
153. can: broadcast manager protocol (rev 20120528 t)
     
154. can: netlink gateway (rev 20130117) max_hops=1
     
155. 8021q: 802.1Q VLAN Support v1.8
     
156. Key type dns_resolver registered
     
157. ubi0: attaching mtd5
     
158. usb 1-1: new high-speed USB device number 2 using ci_hdrc
     
159. random: nonblocking pool is initialized
     
160. hub 1-1:1.0: USB hub found
     
161. hub 1-1:1.0: 4 ports detected
     
162. ubi0: scanning is finished
     
163. ubi0: attached mtd5 (name "rootfs", size 150 MiB)
     
164. ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
     
165. ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
     
166. ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
     
167. ubi0: good PEBs: 1200, bad PEBs: 0, corrupted PEBs: 0
     
168. ubi0: user volume: 1, internal volumes: 1, max. volumes count: 128
     
169. ubi0: max/mean erase counter: 2/1, WL threshold: 4096, image sequence number: 0
     
170. ubi0: available PEBs: 0, total reserved PEBs: 1200, PEBs reserved for bad PEB handling: 40
     
171. ubi0: background thread "ubi_bgt0d" started, PID 82
     
172. dhd_module_init in
     
173. snvs_rtc 20cc000.snvs:snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0)
     
174. VSD_3V3: disabling
     
175. ALSA device list:
     
176.   No soundcards found.
     
177. UBIFS (ubi0:0): background thread "ubifs_bgt0_0" started, PID 83
     
178. UBIFS (ubi0:0): UBIFS: mounted UBI device 0, volume 0, name "rootfs"
     
179. UBIFS (ubi0:0): LEB size: 126976 bytes (124 KiB), min./max. I/O unit sizes: 2048 bytes/2048 bytes
     
180. UBIFS (ubi0:0): FS size: 145387520 bytes (138 MiB, 1145 LEBs), journal size 9023488 bytes (8 MiB, 72 LEBs)
     
181. UBIFS (ubi0:0): reserved for root: 0 bytes (0 KiB)
     
182. UBIFS (ubi0:0): media format: w4/r0 (latest is w4/r0), UUID 94272A2F-B86C-43C7-BACE-AB8BB13933CB, small LPT model
     
183. VFS: Mounted root (ubifs filesystem) on device 0:15.
     
184. devtmpfs: mounted
     
185. Freeing unused kernel memory: 280K (809bc000 - 80a02000)
     
186. INIT: version 2.88 booting
     
187. Starting udev
     
188. udevd[106]: starting version 3.2
     
189. udevd[107]: starting eudev-3.2
     
190. ALSA: Restoring mixer settings...
     
191. Sat Apr 21 06:53:40 UTC 2018
     
192. /usr/sbin/alsactl: load_state:1735: No soundcards found...
     
193. INIT: Entering runlevel: 5
     
194. Configuring network interfaces... udhcpc (v1.24.1) started
     
195. Sending discover...
     
196. Sending discover...
     
197. Sending discover...
     
198. No lease, forking to background
     
199. done.
     
200. Starting system message bus: dbus.
     
201. Starting Dropbear SSH server: Generating key, this may take a while...
     
202. Public key portion is:
     
203. ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDdUDJgSk/kMwBssWOR5GHLNhnbE62cA3zck+n/dK/81Be3iUpZvQxejk+KX/6lfYOmaxnSe/NbExnbIoYq0+LmCYE45RReCpeT6zv/Qe1rFwdTJEZgGZ6wuDPXMGik+D+RgUNNoTk2aM8zl3aMTh1NPFhH7f2H6+V2e74e68TVyngzwtG+fgsXqUBm8mbLWLklLf/5U7HNleO3/wg5xz45qL+hss6incIlLdXmex+GDACwxeM4HCj8lNywW0lzcbSHY00I+u/yR97RgpBZx3AiUv25x8PGtK683ZTl35WXKfiKdT+mmTzdSN3yDbOKI/cvv0/cuI9VQeBYNEM3R72X root@i2c6ulxbn
     
204. Fingerprint: md5 c0:e0:a5:01:c9:26:e8:a4:a3:e6:31:ba:5b:f1:b4:8c
     
205. dropbear.
     
206. Starting syslogd/klogd: done
     
207. Starting vsftpd server: done
     
208. 
     
209. i2SOM Yocto 2.2-r0 i2c6ulxbn /dev/ttymxc0
     
210. 
     
211. i2c6ulxbn login:

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从启动信息上看，官方还是做了一些分区划分，具体用法还是看开发者了。文件系统是Yocto构建的，这个可以说是比较清新了，其它家的板子大都是buildroot，有些厂家还不提供buildroot的源码。SSH，DHCP都已经有了，可以更方便的折腾了。