6.6-stable review patch. If anyone has any objections, please let me know.
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From: Sibi Sankar quic_sibis@quicinc.com
[ Upstream commit 7b22b7719fc17d5979a991c918c868ab041be5c8 ]
Any write access to the IMEM region when the Q6 is setting up XPU protection on it will result in a XPU violation. Fix this by ensuring IMEM writes related to the MBA post-mortem logs happen before the Q6 is brought out of reset.
Fixes: 318130cc9362 ("remoteproc: qcom_q6v5_mss: Add MBA log extraction support") Signed-off-by: Sibi Sankar quic_sibis@quicinc.com Reviewed-by: Douglas Anderson dianders@chromium.org Tested-by: Douglas Anderson dianders@chromium.org Link: https://lore.kernel.org/r/20240819073020.3291287-1-quic_sibis@quicinc.com Signed-off-by: Bjorn Andersson andersson@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/remoteproc/qcom_q6v5_mss.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index 22fe7b5f5236d..2d717f2ed396c 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -1161,6 +1161,9 @@ static int q6v5_mba_load(struct q6v5 *qproc) goto disable_active_clks; }
+ if (qproc->has_mba_logs) + qcom_pil_info_store("mba", qproc->mba_phys, MBA_LOG_SIZE); + writel(qproc->mba_phys, qproc->rmb_base + RMB_MBA_IMAGE_REG); if (qproc->dp_size) { writel(qproc->mba_phys + SZ_1M, qproc->rmb_base + RMB_PMI_CODE_START_REG); @@ -1171,9 +1174,6 @@ static int q6v5_mba_load(struct q6v5 *qproc) if (ret) goto reclaim_mba;
- if (qproc->has_mba_logs) - qcom_pil_info_store("mba", qproc->mba_phys, MBA_LOG_SIZE); - ret = q6v5_rmb_mba_wait(qproc, 0, 5000); if (ret == -ETIMEDOUT) { dev_err(qproc->dev, "MBA boot timed out\n");