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soc/intel_adsp: cavstool: new parameter wait_fw_entered(timeout_s)

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Add a new timeout_s parameter that can also be 'None' = infinite.

No functional change. Required to add future support for DSP power
state: D3

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
This commit is contained in:
Marc Herbert 2022-07-01 01:41:55 +00:00 • committed by Carles Cufí
commit ef4cd76970
1 changed files with 18 additions and 5 deletions
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23
soc/xtensa/intel_adsp/tools/cavstool.py
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@ -482,16 +482,29 @@ def load_firmware(fw_file):
sd.CTL |= 1
log.info(f"cAVS firmware load complete")
def fw_is_alive():
return dsp.SRAM_FW_STATUS & ((1 << 28) - 1) == 5 # "FW_ENTERED"
def wait_fw_entered():
log.info("Waiting for firmware handoff, FW_STATUS = 0x%x", dsp.SRAM_FW_STATUS)
for _ in range(200):
alive = dsp.SRAM_FW_STATUS & ((1 << 28) - 1) == 5 # "FW_ENTERED"
def wait_fw_entered(timeout_s=2):
log.info("Waiting %s for firmware handoff, FW_STATUS = 0x%x",
"forever" if timeout_s is None else f"{timeout_s} seconds",
dsp.SRAM_FW_STATUS)
hertz = 100
attempts = None if timeout_s is None else timeout_s * hertz
while True:
alive = fw_is_alive()
if alive:
break
time.sleep(0.01)
if attempts is not None:
attempts -= 1
if attempts < 0:
break
time.sleep(1 / hertz)
if not alive:
log.warning("Load failed? FW_STATUS = 0x%x", dsp.SRAM_FW_STATUS)
else:
log.info("FW alive, FW_STATUS = 0x%x", dsp.SRAM_FW_STATUS)
# This SHOULD be just "mem[start:start+length]", but slicing an mmap