From: Sibi Sankar sibis@codeaurora.org
commit d96f2571dc84d128cacf1944f4ecc87834c779a6 upstream.
On secure devices after a wdog/fatal interrupt, the mba region has to be refreshed in order to prevent the following errors during mba load.
Err Logs: remoteproc remoteproc2: stopped remote processor 4080000.remoteproc qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232 qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232 .... qcom-q6v5-mss 4080000.remoteproc: PBL returned unexpected status -284031232 qcom-q6v5-mss 4080000.remoteproc: MBA booted, loading mpss
Fixes: 7dd8ade24dc2a ("remoteproc: qcom: q6v5-mss: Add custom dump function for modem") Cc: stable@vger.kernel.org Signed-off-by: Sibi Sankar sibis@codeaurora.org Tested-by: Bjorn Andersson bjorn.andersson@linaro.org Link: https://lore.kernel.org/r/20200304194729.27979-4-sibis@codeaurora.org Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/remoteproc/qcom_q6v5_mss.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-)
--- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -904,6 +904,23 @@ static void q6v5_mba_reclaim(struct q6v5 } }
+static int q6v5_reload_mba(struct rproc *rproc) +{ + struct q6v5 *qproc = rproc->priv; + const struct firmware *fw; + int ret; + + ret = request_firmware(&fw, rproc->firmware, qproc->dev); + if (ret < 0) + return ret; + + q6v5_load(rproc, fw); + ret = q6v5_mba_load(qproc); + release_firmware(fw); + + return ret; +} + static int q6v5_mpss_load(struct q6v5 *qproc) { const struct elf32_phdr *phdrs; @@ -1062,7 +1079,7 @@ static void qcom_q6v5_dump_segment(struc
/* Unlock mba before copying segments */ if (!qproc->dump_mba_loaded) { - ret = q6v5_mba_load(qproc); + ret = q6v5_reload_mba(rproc); if (!ret) { /* Reset ownership back to Linux to copy segments */ ret = q6v5_xfer_mem_ownership(qproc, &qproc->mpss_perm,