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NAND flash boot for processor

Posted: 12 May 2009     Print Version  Bookmark and Share

Keywords:MPC5121e  NAND flash  NOR 

This application note by Freescale describes the procedures needed to perform NAND flash boot with a Freescale MPC5121e. The hardware platform used in this example is a Silicon Turnkey Express ADS512101 rev 4 board.

With regard to board preparation, verify your board is working. The board ships with a version of u-boot software in the NOR flash. U-boot should boot from NOR flash and give you a command prompt on the UART0 serial port. The UART0 serial port is configured to 115,200 baud, 8 data bits, 1 stop bit, and no hardware handshaking.

The factory default for all eight of the SW3 positions is to be on. To make the board boot from NAND flash you must put SW3 position 2 to off. The ADS512101 uses a Hynix HY27UG088G(5/D)M 1 GB NAND flash which has a ×8 bus width, and is arranged into (2k + 64) pages.

View the PDF document for more information.

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