40 lines
1.4 KiB
Plaintext
40 lines
1.4 KiB
Plaintext
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STM Testing Documentation
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Usage: stm_test.sh [runs] [run-size] [delay] [usb|mem]
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Runs the basic stm test.
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OPTIONS:
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The following options can be used:
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- runs: Number of runs to be performed
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- run-size: Number of trace_marker entries in each run
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- delay: The delay between runs, specified in seconds
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- usb/mem: If you want the coresight sink to be usb or etr mem, default is etf
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Not specifying any of these will default runs=50, run-size=10 and
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delay=0.001s, that is 1ms. Also coresight sink will be etf.
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TEST BEHAVIOR:
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* Test will use trace_marker to test stm. It will start by enabling STM.
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It will then echo an increasing counter to the trace_marker
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and will continue doing so depending on the number of runs and
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run-size specified, The total entries echoed will be run*run-size.
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The echoed text will be visible on the screen
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It will then disable the STM and dump the ETF dump to the
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/data/ftace/stm_trace.bin file. It will also collect the trace.txt
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file from debugfs and dump it under /data/coresight alongwith the
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format file.
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After obtaining the stm_trace.bin file from the device, the qht
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tool can be used to parse it and observe the text echoed to the
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trace_marker event.
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This parsed data can be compared with the data for the trace_marker
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event observed in the trace.txt file previously dumped and should
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match that exactly.
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TARGETS:
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* 8974
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NOTE:
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* Assumes /data partition exists
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