本帖最后由 伏波将军 于 2013-8-10 22:15 编辑
使用天嵌出厂的ubi文件系统,成功烧写,也改过启动参数并保存,但是系统启动后,串口控制台不工作,而PDA能正常跑起来,不明白为啥,下面贴出启动打印信息:前面一大段因为发帖有字数限制,故没贴出
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UBIFS: recovery needed
UBIFS: recovery completed
UBIFS: mounted UBI device 0, volume 0, name "rootfs"
UBIFS: file system size: 247984128 bytes (242172 KiB, 236 MiB, 1953 LEBs)
UBIFS: journal size: 9023488 bytes (8812 KiB, 8 MiB, 72 LEBs)
UBIFS: media format: w4/r0 (latest is w4/r0)
UBIFS: default compressor: lzo
UBIFS: reserved for root: 0 bytes (0 KiB)
VFS: Mounted root (ubifs filesystem) on device 0:12.
Freeing init memory: 264K
Start Qt4 PDA
Unable to handle kernel NULL pointer dereference at virtual address 00000004
pgd = c30e8000
[00000004] *pgd=330d8831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1]
Modules linked in: libertas
CPU: 0 Not tainted (3.1.0-EmbedSky #2)
PC is at module_put+0xc/0x2c
LR is at sys_init_module+0x144/0x1260
pc : [<c0055448>] lr : [<c0055a48>] psr: a0000013
sp : c3087ec8 ip : 22222222 fp : c00549d0
r10: c0054900 r9 : bf008fa8 r8 : 0000000e
r7 : bf008f60 r6 : 00000001 r5 : 00000000 r4 : 00000000
r3 : 00000000 r2 : c3b35820 r1 : 22222222 r0 : bf008f60
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 0005317f Table: 330e8000 DAC: 00000015
Process modprobe (pid: 1245, stack limit = 0xc3086270)
Stack: (0xc3087ec8 to 0xc3088000)
7ec0: bf008f6c c306b360 00000000 c3086000 bf008f6c c49474b5
7ee0: bf009084 c0502618 c4938000 0000f4c1 c4941484 c4941382 c4945dc4 c3029400
7f00: 000090a4 0000a824 00000000 00000000 0000001a 0000001b 00000013 00000000
7f20: 0000000e 00000000 6e72656b 00006c65 00000000 00000000 00000000 00000000
7f40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
7f60: 00000000 00000000 00000000 bf007680 00000011 00000000 00000000 00000000
7f80: c381a800 0000f4c1 00000000 00000008 00000080 c0014be8 c3086000 00000000
7fa0: 001fd0e0 c0014a40 0000f4c1 00000000 001fd130 0000f4c1 001e5e78 001fd0a8
7fc0: 0000f4c1 00000000 00000008 00000080 001fcfa8 00000001 001fd130 001fd0e0
7fe0: bead6980 bead6970 0002d73c 00009380 20000010 001fd130 ffffffff ffffffff
[<c0055448>] (module_put+0xc/0x2c) from [<c0055a48>] (sys_init_module+0x144/0x1260)
[<c0055a48>] (sys_init_module+0x144/0x1260) from [<c0014a40>] (ret_fast_syscall+0x0/0x2c)
Code: c0648464 e3500000 012fff1e e5903134 (e5932004)
---[ end trace 5260bebf65d75d1d ]---
Segmentation fault
打印完这些信息,输入就没反应
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