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Using a JTAG in Linux Driver Debugging - page 48 / 48

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04/16/2008 - Copyright © 2008 The PTR Group Inc.

CELF-2008-SVC-48

Summary

Hardware debuggers such as JTAG are invaluable for exercising new hardware

They let us test address lines and registers

Once we can configure the board via the JTAG, we then take that info and use it to port the boot firmware

We can usually burn the boot firmware into flash via the JTAG as well

Once the boot firmware is loading Linux, the JTAG can then help again in early kernel debugging and device driver debugging

Don’t start your next bring-up project without one!

Demo time…

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