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Subject[PATCH 1/3] remoteproc: qcom_q6v5_mss: Add modem debug policy support
Date
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>
---
drivers/remoteproc/qcom_q6v5_mss.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index 13c6d5a72a831..95e21ed607cb9 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -187,6 +187,7 @@ 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;
@@ -406,6 +407,13 @@ static int q6v5_xfer_mem_ownership(struct q6v5 *qproc, int *current_perm,
static int q6v5_load(struct rproc *rproc, const struct firmware *fw)
{
struct q6v5 *qproc = rproc->priv;
+ const struct firmware *dp_fw;
+
+ if (!request_firmware(&dp_fw, "msadp", qproc->dev) && fw->size <= SZ_1M) {
+ memcpy(qproc->mba_region + SZ_1M, dp_fw->data, dp_fw->size);
+ qproc->dp_size = dp_fw->size;
+ release_firmware(dp_fw);
+ }

memcpy(qproc->mba_region, fw->data, fw->size);

@@ -896,6 +904,10 @@ 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)
@@ -1258,7 +1270,8 @@ 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, debug policy %s, loading mpss\n",
+ qproc->dp_size ? "enabled" : "disabled");

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
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