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'Fast Boot' DSP
Added by Gregory Gluszek about 12 years ago
(Posted on behalf of a customer):
We need to boot the DSP fast (up and running code in less than 2 secs. ) and then continue with ARM/Linux boot?
Replies (1)
RE: 'Fast Boot' DSP - Added by Michael Williamson about 12 years ago
Is the DSP going to be communicating to the ARM via DSPLINK? If so, this may be a challenge as the ARM and DSP need to do some handshaking on startup after the linux kernel is loaded and initialized. You'll need to look closely at optimizing the ARM / linux bootup sequence to meet your timeline and make sure the DSPLINK application is launched early in the initialization process.
It may be possible to delay the initialization of the DSPLINK code, but we've not tried this before and would likely require some investigation here at Critical Link.
If the DSP will be running independently of the ARM, then it may be possible to meet your startup times by first loading the DSP via the bootdsp command from u-Boot and then booting the ARM / linux side.
-Mike
