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八、 USB 操作指令
指令 | 功能 | | usb reset | 初始化USB控制器 | | usb stop [f] | 关闭USB控制器 | | usb tree | 已连接的USB设备树 | | usb info [dev] | 显示USB设备[dev]的信息 | | usb storage | 显示已连接的USB存储设备 | | usb dev [dev] | 显示和设置当前USB存储设备 | | usb part [dev] | 显示USB存储设备[dev]的分区信息 | | usb read addr blk# cnt | 读取USB存储设备数据 |
在所有的命令使用前，必须先插入USB设备，然后使用：usb reset，以初始化USB控制器，获取设备信息。
我将一个4G的kingstonU盘（可引导盘）插入 mini2440，然后读取他的头512 字节（MBR）：
[u-boot@MINI2440]# usb reset
(Re)start USB...
USB: scanning bus for devices... 2 USB Device(s) found
scanning bus for storage devices... 1 Storage Device(s) found
[u-boot@MINI2440]# usb tree
Device Tree:
1 Hub (12 Mb/s, 0mA)
| OHCI Root Hub
|
+-2 Mass Storage (12 Mb/s, 100mA)
Kingston DT 101 II 0019E02CB6EB5B8B1B120051
[u-boot@MINI2440]# usb info
1: Hub, USB Revision 1.10
- OHCI Root Hub
- Class: Hub
- PacketSize: 8 Configurations: 1
- Vendor: 0x0000 Product 0x0000 Version 0.0
Configuration: 1
- Interfaces: 1 Self Powered 0mA
Interface: 0
- Alternate Setting 0, Endpoints: 1
- Class Hub
- Endpoint 1 In Interrupt MaxPacket 2 Interval 255ms
2: Mass Storage, USB Revision 2.0
- Kingston DT 101 II 0019E02CB6EB5B8B1B120051
- Class: (from Interface) Mass Storage
- PacketSize: 64 Configurations: 1
- Vendor: 0x0951 Product 0x1613 Version 1.0
Configuration: 1
- Interfaces: 1 Bus Powered 100mA
Interface: 0
- Alternate Setting 0, Endpoints: 2
- Class Mass Storage, Transp. SCSI, Bulk only
- Endpoint 1 In Bulk MaxPacket 64
- Endpoint 2 Out Bulk MaxPacket 64
[u-boot@MINI2440]# usb storage
Device 0: Vendor: Kingston Rev: PMAP Prod: DT 101 II
Type: Removable Hard Disk
Capacity: 3875.0 MB = 3.7 GB (7936000 x 512)
[u-boot@MINI2440]# usb dev 0
USB device 0:
Device 0: Vendor: Kingston Rev: PMAP Prod: DT 101 II
Type: Removable Hard Disk
Capacity: 3875.0 MB = 3.7 GB (7936000 x 512)
... is now current device
[u-boot@MINI2440]# usb part 0
print_part of 0
Partition Map for USB device 0 -- Partition Type: DOS
Partition Start Sector Num Sectors Type
4 63 7935937 c
[u-boot@MINI2440]# usb read 0x30008000 0 200
USB read: device 0 block # 0, count 512 ... .........................
512 blocks read: OK
[u-boot@MINI2440]# md.b 0x30008000 200
30008000: fa 31 c0 8e d8 8e c0 8e d0 bc 00 7c fb fc 89 e6
.1.........|....
30008010: bf 00 06 b9 00 01 f3 a5 ea dc 06 00 00 10 00 01
................
30008020: 00 00 7c 00 00 00 00 00 00 00 00 00 00 80 3f 00
..|...........?.
30008030: ff 00 ed 01 1e 0e 1f 3a 16 10 00 74 06 1f ea 36
.......:...t...6
30008040: e7 00 f0 3d fb 54 75 05 8c d8 fb eb 1d 80 fc 08
...=.Tu.........
30008050: 75 1b e8 81 00 8a 36 13 00 fe ce 8b 0e 15 00 86
u.....6.........
30008060: cd c0 e1 06 0a 0e 11 00 31 c0 f8 eb 65 80 fc 02
........1...e...
30008070: 72 cb 80 fc 04 77 c6 60 80 cc 40 50 be 00 00 c7
r....w.`..@P....
30008080: 04 10 00 30 e4 89 44 02 89 5c 04 8c 44 06 66 31
...0..D..\..D.f1
30008090: c0 66 89 44 0c 88 f0 f6 26 11 00 88 cf 88 eb c0
.f.D....&.......
300080a0: ef 06 81 e1 3f 00 01 c8 48 89 c7 a1 13 00 f7 26
....?...H......&
300080b0: 11 00 f7 e3 01 f8 81 d2 00 00 89 44 08 89 54 0a
...........D..T.
300080c0: 58 30 c0 8a 16 10 00 e8 0c 00 88 26 03 00 61 a1
X0.........&..a.
300080d0: 02 00 1f ca 02 00 9c ff 1e 22 00 c3 80 fa 8f 7f
........."......
300080e0: 04 88 16 2d 06 be 87 07 e8 8d 00 be be 07 31 c0
...-..........1.
300080f0: b9 04 00 f6 04 80 74 03 40 89 f5 81 c6 10 00 e2
......t.@.......
30008100: f2 48 74 02 cd 18 bf 05 00 be 1d 06 c7 44 02 01
.Ht..........D..
30008110: 00 66 8b 46 08 66 89 44 08 b8 00 42 8a 16 2d 06
.f.F.f.D...B..-.
30008120: cd 13 73 0d 4f 74 49 30 e4 8a 16 2d 06 cd 13 eb
..s.OtI0...-....
30008130: d8 a1 fe 7d 3d 55 aa 75 37 fa 66 a1 4c 00 66 a3
...}=U.u7.f.L.f.
30008140: 3f 06 be 13 04 8b 04 48 89 04 c1 e0 06 8e c0 31
?......H.......1
30008150: ff be 1d 06 b9 60 00 fc f3 a5 c7 06 4c 00 17 00
.....`......L...
30008160: a3 4e 00 fb 8a 16 2d 06 89 ee fa ea 00 7c 00 00
.N....-......|..
30008170: be aa 07 e8 02 00 eb fe ac 20 c0 74 09 b4 0e bb
......... .t....
30008180: 07 00 cd 10 eb f2 c3 53 74 61 72 74 20 62 6f 6f
.......Start boo
30008190: 74 69 6e 67 20 66 72 6f 6d 20 55 53 42 20 64 65
ting from USB de
300081a0: 76 69 63 65 2e 2e 2e 0d 0a 00 42 6f 6f 74 20 66
vice......Boot f
300081b0: 61 69 6c 65 64 00 00 00 ea eb d4 ca 00 00 00 00
ailed...........
300081c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
................
300081d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
................
300081e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 01
................
300081f0: 01 00 0c fe 7f ec 3f 00 00 00 c1 17 79 00 55 aa
......?.....y.U. |
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