关于OKMX6Q-C开发板u-boot的nfs配置问题

aidaogu

我按照飞凌嵌入式linux操作手册设置好了nfs环境，重新编译和下载了u-boot和uImage，u-boot能成功运行。也能引导uImage，但是出现以下错误：

1. U-Boot 2009.08 (Nov 21 2017 - 03:27:32)
   
2. 
   
3. CPU: Freescale i.MX6 family TO1.5 at 792 MHz
   
4. Temperature:   44 C, calibration data 0x5bc52d69
   
5. mx6q pll1: 792MHz
   
6. mx6q pll2: 528MHz
   
7. mx6q pll3: 480MHz
   
8. mx6q pll8: 50MHz
   
9. ipg clock     : 66000000Hz
   
10. ipg per clock : 66000000Hz
    
11. uart clock    : 80000000Hz
    
12. cspi clock    : 60000000Hz
    
13. ahb clock     : 132000000Hz
    
14. axi clock   : 264000000Hz
    
15. emi_slow clock: 132000000Hz
    
16. ddr clock     : 528000000Hz
    
17. usdhc1 clock  : 198000000Hz
    
18. usdhc2 clock  : 198000000Hz
    
19. usdhc3 clock  : 198000000Hz
    
20. usdhc4 clock  : 198000000Hz
    
21. nfc clock     : 24000000Hz
    
22. Board: i.MX6Q-SABRESD: unknown-board Board: 0x63015 [WDOG ]
    
23. Boot Device: MMC
    
24. I2C:   ready
    
25. DRAM:   1 GB
    
26. MMC:   FSL_USDHC: 0,FSL_USDHC: 1,FSL_USDHC: 2,FSL_USDHC: 3
    
27. In:    serial
    
28. Out:   serial
    
29. Err:   serial
    
30. config_ipu_di_clk: freq = 108000000.
    
31. wait for pll5 lock.
    
32. config_ipu_di_clk: set pll5 clock to 216000000Hz.
    
33. Found PFUZE100! deviceid=10,revid=21
    
34. Net:   got MAC address from IIM: 00:00:00:00:00:00
    
35. FEC0 [PRIME]
    
36. WatchDog is disabled
    
37. Hit any key to stop autoboot:  0
    
38. mmc3(part 0) is current device
    
39. 
    
40. MMC read: dev # 3, block # 2048, count 10496 ... 10496 blocks read: OK
    
41. ## Booting kernel from Legacy Image at 10800000 ...
    
42.    Image Name:   Linux-3.0.35-2666-gbdde708
    
43.    Image Type:   ARM Linux Kernel Image (uncompressed)
    
44.    Data Size:    3992748 Bytes =  3.8 MB
    
45.    Load Address: 10008000
    
46.    Entry Point:  10008000
    
47.    Verifying Checksum ... OK
    
48.    Loading Kernel Image ... OK
    
49. OK
    
50. 
    
51. Starting kernel ...
    
52. 
    
53. Uncompressing Linux... done, booting the kernel.
    
54. Linux version 3.0.35-2666-gbdde708 (root@ubuntu) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #1 SMP PREEMPT Tue Nov 21 03:48:39 PST 2017
    
55. CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d
    
56. CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
    
57. Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board
    
58. Memory policy: ECC disabled, Data cache writealloc
    
59. CPU identified as i.MX6Q, unknown revision
    
60. On node 0 totalpages: 196608
    
61. free_area_init_node: node 0, pgdat 80b074a0, node_mem_map 8b800000
    
62.   DMA zone: 368 pages used for memmap
    
63.   DMA zone: 0 pages reserved
    
64.   DMA zone: 46736 pages, LIFO batch:15
    
65.   Normal zone: 1680 pages used for memmap
    
66.   Normal zone: 147824 pages, LIFO batch:31
    
67. PERCPU: Embedded 7 pages/cpu @8c008000 s5440 r8192 d15040 u32768
    
68. pcpu-alloc: s5440 r8192 d15040 u32768 alloc=8*4096
    
69. pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3
    
70. Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 194560
    
71. Kernel command line: root=/dev/nfs ip=10.20.1.68 nfsroot=10.20.1.69:/nfs_rootfs,v3,tcp
    
72. PID hash table entries: 4096 (order: 2, 16384 bytes)
    
73. Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
    
74. Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
    
75. Memory: 512MB 256MB = 768MB total
    
76. Memory: 765676k/765676k available, 282900k reserved, 0K highmem
    
77. Virtual kernel memory layout:
    
78.     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    
79.     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
    
80.     DMA     : 0xf4600000 - 0xffe00000   ( 184 MB)
    
81.     vmalloc : 0xc0800000 - 0xf2000000   ( 792 MB)
    
82.     lowmem  : 0x80000000 - 0xc0000000   (1024 MB)
    
83.     pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)
    
84.     modules : 0x7f000000 - 0x7fe00000   (  14 MB)
    
85.       .init : 0x80008000 - 0x8003c000   ( 208 kB)
    
86.       .text : 0x8003c000 - 0x80aa5e80   (10664 kB)
    
87.       .data : 0x80aa6000 - 0x80b085c0   ( 394 kB)
    
88.        .bss : 0x80b085e4 - 0x80b5737c   ( 316 kB)
    
89. SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
    
90. Preemptible hierarchical RCU implementation.
    
91. NR_IRQS:624
    
92. MXC GPIO hardware
    
93. sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms
    
94. arm_max_freq=800MHz
    
95. MXC_Early serial console at MMIO 0x2020000 (options '115200')
    
96. bootconsole [ttymxc0] enabled
    
97. Console: colour dummy device 80x30
    
98. console [tty0] enabled, bootconsole disabled
    

复制代码

1. MX6Q SABRESD U-Boot >
   
2. MX6Q SABRESD U-Boot > printenv
   
3. bootdelay=3
   
4. baudrate=115200
   
5. netmask=255.255.255.0
   
6. loadaddr=0x10800000
   
7. netdev=eth0
   
8. ldb_mode=ldb=sin0
   
9. mxcfb0=video=mxcfb0:dev=lcd,AT070-WVGA,if=RGB24,bpp=32
   
10. mxcfb1=video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32
    
11. fec_mac=1E:ED:19:27:1A:B3
    
12. codec_name=audio_codec=wm8960-24M
    
13. ethprime=FEC0
    
14. splashimage=0x30000000
    
15. splashpos=m,m
    
16. wdtenable=disable
    
17. lvds_num=1
    
18. fastboot_dev=mmc3
    
19. ethact=FEC0
    
20. ethaddr=00:E0:0C:66:88:99
    
21. ipaddr=10.20.1.68
    
22. serverip=10.20.1.69
    
23. system=linux
    
24. kernel=uImage
    
25. uboot=u-boot.bin
    
26. nfsroot=/nfs_rootfs
    
27. bootargs_nfs=setenv bootargs root=/dev/nfs ip=10.20.1.68 nfsroot=10.20.1.69:/nfs_rootfs,v3,tcp
    
28. bootcmd=run bootcmd_net
    
29. bootargs_mmc=setenv bootargs ip=none root=/dev/mmcblk0p1 rootwait
    
30. bootcmd_mmc=run bootargs_base bootargs_mmc
    
31. bootcmd_net=run bootargs_base bootargs_nfs; mmc dev 3; mmc read ${loadaddr} 0x800 0x2900; bootm
    
32. rd_loadaddr=(0x1300000)
    
33. bootargs_base=setenv bootargs console=tty0,115200 video=mxcfb0:dev=lcd,AT070-WVGA,if=RGB24,bpp=32 video=mxcfb1:dev=hdmi,1920x1080M@60,if=RGB24,bpp=32 video=mxcfb2:off
    
34. stdin=serial
    
35. stdout=serial
    
36. stderr=serial
    
37. 
    
38. Environment size: 1068/8188 bytes
    
39. MX6Q SABRESD U-Boot >

复制代码

以上是我的u-boot配置，请问，贵司有关于nfs配置的资料吗？我以上的配置错误在什么地方？怎样重置和擦除u-boot的环境变量？

飞凌-chongzi

您好：
    我看了一下您的配置，看不出有什么问题，如下是我们手册的设置命令，您可以再重新设置一下：
setenv ethaddr 00:E0:0C:BC:E5:60 #设置网卡mac地址
setenv ipaddr 192.168.2.85 #设置开发板IP地址
setenv serverip 192.168.2.51 #设置tftp服务IP地址
setenv bootcmd run bootcmd_net #设置启动参数
注意下面的这些是一行环境变量

setenv bootargs_nfs setenv bootargs console=ttymxc0,115200
video=mxcfb0:dev=hdmi,1920x1080@60,if=RGB24,bpp=32
video=mxcfb1:dev=hdmi,1920x1080@60,if=RGB24,bpp=32 ldb=sin0 audio_codec=wm8960-24M
video=mxcfb2:off calibrate=Y root=/dev/nfs ip=192.168.2.85:192.168.2.1:255.255.255.0
nfsroot=192.168.2.51:/nfs_rootfs,v3,tcp
另外，如果您想重置环境变量的话，没有好的办法，重新烧写吧

aidaogu

飞凌-chongzi 发表于 2017-11-23 09:14
您好：
    我看了一下您的配置，看不出有什么问题，如下是我们手册的设置命令，您可以再重新设置一下：
...

您好！非常感谢您的支持！我使用u-boot自带的destroyenv命令，能清除掉我设置的环境变量，恢复为默认值。