linux-kernel - [PATCH v2 0/2] remoteproc: imx_dsp_rproc: Add coredump and recovery support

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Message-Id: <20250704052529.1040602-1-shengjiu.wang@nxp.com>
Date: Fri,  4 Jul 2025 13:25:27 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: andersson@...nel.org,
	mathieu.poirier@...aro.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	linux-remoteproc@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/2] remoteproc: imx_dsp_rproc: Add coredump and recovery support

When recovery is triggered, rproc_stop() is called first then
rproc_start(), but there is no rproc_unprepare_device() and
rproc_prepare_device() in the flow. As the software reset is needed
before DSP starts, so move software reset from imx_dsp_runtime_resume()
to .load() to make the recovery work. And make sure memory is cleared
before loading firmware.

Add call rproc_coredump_set_elf_info() to initialize the elf info for
coredump, otherwise coredump will report error "ELF class is not set".

changes in v2:
- move .reset() from runtime resume to .load()
- IRAM and DRAM still in the coredump scope.

Shengjiu Wang (2):
  remoteproc: imx_dsp_rproc: Add support of recovery process
  remoteproc: imx_dsp_rproc: Add support of coredump

 drivers/remoteproc/imx_dsp_rproc.c | 45 +++++++++++++++++++-----------
 1 file changed, 29 insertions(+), 16 deletions(-)

-- 
2.34.1