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trace: Don't initialize trace buffer under Zephyr 

This memory is already owned and initialized by the OS under Zephyr
(and in many cases already holds live output!), don't touch it.

Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
This commit is contained in:
Andy Ross 2021-06-24 15:07:52 -07:00 committed by Liam Girdwood
parent c0f5668a82
commit d2a79d05e1
1 changed files with 6 additions and 0 deletions
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6
src/trace/trace.c
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@ -518,9 +518,15 @@ void trace_init(struct sof *sof)
#endif /* CONFIG_TRACE_FILTERING_ADAPTIVE */
spinlock_init(&sof->trace->lock);
#ifndef __ZEPHYR__
/* Zephyr owns and has already initialized this buffer (and
* likely has already logged to it by the time we get here).
* Don't touch.
*/
bzero((void *)MAILBOX_TRACE_BASE, MAILBOX_TRACE_SIZE);
dcache_writeback_invalidate_region((void *)MAILBOX_TRACE_BASE,
MAILBOX_TRACE_SIZE);
#endif
dma_trace_init_early(sof);
}