内核编译去掉USB驱动出现启动不了的问题

gaocaimary

启动现象如下
[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
/ S2 }  W4 M) ]4 R9 t/ a[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
) y* l! Q- R7 v8 b. [1 \[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
8 A3 i- C4 x6 ?: E; q[    1.765823] davinci_mdio davinci_mdio.0: timed out waiting for user access
[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
$ \6 R5 ~  H! l[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
[    1.790613] ads7846 spi1.1: touchscreen, irq 145
) Q7 Z3 C- v# Q& i! w6 T9 ]2 H[    1.796961] input: ADS7846 Touchscreen as /devices/platform/spi_davinci.1/spi_master/spi1/spi1.1/input/input0
! X3 t1 ?% I: q. d5 p& s$ @[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
& a, q! s& x/ j. }# f[    1.818481] omap_rtc: RTC power up reset detected
[    1.824103] i2c /dev entries driver
4 }0 _6 L+ \8 S. q  T[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
+ w: Q+ ^3 l3 J( G% b[    1.837971] IR NEC protocol handler initialized
[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
6 }$ {3 z5 J0 ~  p[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
6 L6 y6 }, U0 y' T4 @7 V% q[    1.867170] IR SANYO protocol handler initialized
7 w5 w. V2 b" q2 R[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
. `3 @: c1 z, L% ][    1.877882] IR LIRC bridge handler initialized
- v3 y+ ^" m: y3 W) S[    1.882369] Linux video capture interface: v2.00
" W2 S, K2 a) D) w( G- R3 [[    1.888722] watchdog watchdog: heartbeat 60 sec
* b# J1 g9 V8 I( j1 b$ I[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
  R* c0 h+ q/ G[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    1.942633] console [netcon0] enabled
[    1.946844] netconsole: network logging started
$ {7 L# t, [; j" D! _5 m) G[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
[    1.971301] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
8 M5 B3 q* p" O. B+ y& A% f1 G5 l[    1.981557] Root-NFS: no NFS server address
[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
* b  k/ z8 y" c! M' v! g/ w  F[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
8 C# H3 _$ H1 G( d0 t[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
5 S% X  s6 d0 D' Q+ a[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
; s% @/ y/ w: ^7 }7 m$ @- v6 U[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
9 l- L# r* G' j! Y[    2.067289] 1f09            4096 mtdblock9
[    2.071638] mmc0: new high speed SDHC card at address 1234
* B$ A8 z! E. T  a[    2.077485]  (driver?)
[    2.079916] 1f0a              64 mtdblock10  (driver?)
[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
                                                                                                                                          
然后串口就没有反应了，紧急求助

$ N: C! O1 R5 l" e. \9 t

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
% B3 s+ z; i# c: [5 o1 S# m2 [6 U[    2.059503]  (driver?)
您的问题，可能是sd的wp管脚被lock了，请检查一下sd卡，跟usb驱动应该无关的。
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