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Beta Period FAQ

This document includes issues seen by OSK5912 users during the beta period.

1. The CPU occasionally hangs immediately after uncompressing kernel on beta boards.
This is due to a small bug in the kernel startup code that shipped with the beta units. A revised version of the kernel will ship with the production boards. A patch will be available here after the fix is validated.

The only place the bug manifests itself is immediately after kernel uncompression and does not have an effect on other areas after that. The temporary workaround is just to power cycle the board.

2. Filesytem errors occur during boot if I use U-Boot 1.1.1.
There were a few initialization bugs in the official U-Boot 1.1.1 release included on the beta kits CD-ROMs. This included Flash EMIF timings of approximately 100ns while the actual Flash devices are have 120ns access times. The filesystem errors are due to Flash read errors.

The beta boards were shipped with a patched version of U-Boot 1.1.1 so these problems do not occur using the as-shipped Flash contents. However, the CD-ROM includes the official U-Boot 1.1.1 release, not the patched version. The patch is available below:

OSK5912 U-Boot Version History
OSK5912 Version In Flash On CD-ROM
Alpha2 U-Boot 1.0.0 U-Boot 1.0.0
Beta U-Boot 1.1.1 + temporary patch (replaces board/omap5912osk/platform.S) U-Boot 1.1.1

3. What is the difference between the Alpha-2 boards and the Beta boards
The Beta board has power measurement test points, the Ethernet MAC address is included on the back-side silk screen and documentation/code has been updated.

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