| Message ID | 20200722201047.12975-4-sibis@codeaurora.org (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | fe6a5dc4b03171653d217e6dc7c1739e90c660bb |
| Headers | show |
| Series | Add modem debug features | expand |
On Wed 22 Jul 13:10 PDT 2020, Sibi Sankar wrote: > Add modem debug policy support which will enable coredumps and live > debug support when the msadp firmware is present on secure devices. > > Signed-off-by: Sibi Sankar <sibis@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> > --- > > v3: > * Fix dp_fw leak and create a separate func for dp load [Bjorn] > * Reset dp_size on mba_reclaim > > v2: > * Use request_firmware_direct [Bjorn] > * Use Bjorn's template to show if debug policy is present > * Add size check to prevent memcpy out of bounds [Bjorn] > > drivers/remoteproc/qcom_q6v5_mss.c | 25 ++++++++++++++++++++++++- > 1 file changed, 24 insertions(+), 1 deletion(-) > > diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c > index f4aa61ba220dc..da99c8504a346 100644 > --- a/drivers/remoteproc/qcom_q6v5_mss.c > +++ b/drivers/remoteproc/qcom_q6v5_mss.c > @@ -191,6 +191,7 @@ struct q6v5 { > phys_addr_t mba_phys; > void *mba_region; > size_t mba_size; > + size_t dp_size; > > phys_addr_t mpss_phys; > phys_addr_t mpss_reloc; > @@ -408,6 +409,21 @@ static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm, > current_perm, next, perms); > } > > +static void q6v5_debug_policy_load(struct q6v5 *qproc) > +{ > + const struct firmware *dp_fw; > + > + if (request_firmware_direct(&dp_fw, "msadp", qproc->dev)) > + return; > + > + if (SZ_1M + dp_fw->size <= qproc->mba_size) { > + memcpy(qproc->mba_region + SZ_1M, dp_fw->data, dp_fw->size); > + qproc->dp_size = dp_fw->size; > + } > + > + release_firmware(dp_fw); > +} > + > static int q6v5_load(struct rproc *rproc, const struct firmware *fw) > { > struct q6v5 *qproc = rproc->priv; > @@ -419,6 +435,7 @@ static int q6v5_load(struct rproc *rproc, const struct firmware *fw) > } > > memcpy(qproc->mba_region, fw->data, fw->size); > + q6v5_debug_policy_load(qproc); > > return 0; > } > @@ -928,6 +945,10 @@ static int q6v5_mba_load(struct q6v5 *qproc) > } > > 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); > + writel(qproc->dp_size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG); > + } > > ret = q6v5proc_reset(qproc); > if (ret) > @@ -996,6 +1017,7 @@ static void q6v5_mba_reclaim(struct q6v5 *qproc) > u32 val; > > qproc->dump_mba_loaded = false; > + qproc->dp_size = 0; > > q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6); > q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); > @@ -1290,7 +1312,8 @@ static int q6v5_start(struct rproc *rproc) > if (ret) > return ret; > > - dev_info(qproc->dev, "MBA booted, loading mpss\n"); > + dev_info(qproc->dev, "MBA booted with%s debug policy, loading mpss\n", > + qproc->dp_size ? "" : "out"); > > ret = q6v5_mpss_load(qproc); > if (ret) > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index f4aa61ba220dc..da99c8504a346 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -191,6 +191,7 @@ struct q6v5 { phys_addr_t mba_phys; void *mba_region; size_t mba_size; + size_t dp_size; phys_addr_t mpss_phys; phys_addr_t mpss_reloc; @@ -408,6 +409,21 @@ static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm, current_perm, next, perms); } +static void q6v5_debug_policy_load(struct q6v5 *qproc) +{ + const struct firmware *dp_fw; + + if (request_firmware_direct(&dp_fw, "msadp", qproc->dev)) + return; + + if (SZ_1M + dp_fw->size <= qproc->mba_size) { + memcpy(qproc->mba_region + SZ_1M, dp_fw->data, dp_fw->size); + qproc->dp_size = dp_fw->size; + } + + release_firmware(dp_fw); +} + static int q6v5_load(struct rproc *rproc, const struct firmware *fw) { struct q6v5 *qproc = rproc->priv; @@ -419,6 +435,7 @@ static int q6v5_load(struct rproc *rproc, const struct firmware *fw) } memcpy(qproc->mba_region, fw->data, fw->size); + q6v5_debug_policy_load(qproc); return 0; } @@ -928,6 +945,10 @@ static int q6v5_mba_load(struct q6v5 *qproc) } 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); + writel(qproc->dp_size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG); + } ret = q6v5proc_reset(qproc); if (ret) @@ -996,6 +1017,7 @@ static void q6v5_mba_reclaim(struct q6v5 *qproc) u32 val; qproc->dump_mba_loaded = false; + qproc->dp_size = 0; q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6); q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); @@ -1290,7 +1312,8 @@ static int q6v5_start(struct rproc *rproc) if (ret) return ret; - dev_info(qproc->dev, "MBA booted, loading mpss\n"); + dev_info(qproc->dev, "MBA booted with%s debug policy, loading mpss\n", + qproc->dp_size ? "" : "out"); ret = q6v5_mpss_load(qproc); if (ret)
Add modem debug policy support which will enable coredumps and live debug support when the msadp firmware is present on secure devices. Signed-off-by: Sibi Sankar <sibis@codeaurora.org> --- v3: * Fix dp_fw leak and create a separate func for dp load [Bjorn] * Reset dp_size on mba_reclaim v2: * Use request_firmware_direct [Bjorn] * Use Bjorn's template to show if debug policy is present * Add size check to prevent memcpy out of bounds [Bjorn] drivers/remoteproc/qcom_q6v5_mss.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-)