AR9331的TP-Link -u-boot的刷机分析

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******************************************      U-Boot 1.1.4  (Apr 22 2013)      ****************************************** AP121 (AR9331) U-Boot for TL-WR740N(D)v4 DRAM:  32 MBFLASH: EON EN25Q64 (8 MB) LED on during eth initialization... Press reset button for at least:- 3 sec. to run web failsafe mode- 5 sec. to run U-Boot console- 7 sec. to run U-Boot netconsole Reset button is pressed for:  6  Button was pressed for 6 sec...Starting U-Boot console... uboot> ? ?           - alias for 'help'boot        - boot default - run command 'bootcmd'bootd       - boot default, i.e., run 'bootcmd'bootm       - boot application image from memorycp          - memory copyerase       - erase FLASH memoryhelp        - print embedded helphttpd       - start www server for firmware recoverymd          - memory displaymm          - memory modify (auto-incrementing)mtest       - simple RAM testmw          - memory write (fill)nm          - memory modify (constant address)printenv    - print environment variablesprintmac    - print MAC address stored in flashprintmodel  - print router model stored in flashreset       - perform RESET of the CPUrun         - run commands in an environment variablesetenv      - set environment variablessetmac      - save new MAC address in flashtftpboot    - boot image via network using TFTP protocolversion     - print U-Boot version uboot>