[PATCH v11 1/6] firmware: qcom_scm: ipq5332: add support to pass metadata size

[Varadarajan Narayanan <varadarajan.narayanan@oss.qualcomm.com>]

From: Manikanta Mylavarapu <quic_mmanikan@quicinc.com>

IPQ5332 security software running under trustzone requires metadata size.
With new command support added in TrustZone that includes a size parameter,
pass metadata size as well.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@quicinc.com>
Signed-off-by: Gokul Sriram Palanisamy <gokul.sriram.p@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Varadarajan Narayanan <varadarajan.narayanan@oss.qualcomm.com>
---
v11: Rebase to top of tree
v10: Added r-b Dmitry tag
v9: Added signed-off-by tag
---
 drivers/firmware/qcom/qcom_scm.c | 14 +++++++++++---
 drivers/firmware/qcom/qcom_scm.h |  1 +
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c
index d1082695ec38..9770c0b75b57 100644
--- a/drivers/firmware/qcom/qcom_scm.c
+++ b/drivers/firmware/qcom/qcom_scm.c
@@ -605,7 +605,7 @@ struct qcom_scm_pas_context *devm_qcom_scm_pas_context_alloc(struct device *dev,
 EXPORT_SYMBOL_GPL(devm_qcom_scm_pas_context_alloc);
 
 static int __qcom_scm_pas_init_image(u32 pas_id, dma_addr_t mdata_phys,
-				     struct qcom_scm_res *res)
+				     struct qcom_scm_res *res, size_t size)
 {
 	struct qcom_scm_desc desc = {
 		.svc = QCOM_SCM_SVC_PIL,
@@ -626,6 +626,14 @@ static int __qcom_scm_pas_init_image(u32 pas_id, dma_addr_t mdata_phys,
 
 	desc.args[1] = mdata_phys;
 
+	if (__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
+					 QCOM_SCM_PIL_PAS_INIT_IMAGE_V2)) {
+		desc.cmd = QCOM_SCM_PIL_PAS_INIT_IMAGE_V2;
+		desc.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_VAL, QCOM_SCM_RW,
+					     QCOM_SCM_VAL);
+		desc.args[2] = size;
+	}
+
 	ret = qcom_scm_call(__scm->dev, &desc, res);
 	qcom_scm_bw_disable();
 
@@ -650,7 +658,7 @@ static int qcom_scm_pas_prep_and_init_image(struct qcom_scm_pas_context *ctx,
 	memcpy(mdata_buf, metadata, size);
 	mdata_phys = qcom_tzmem_to_phys(mdata_buf);
 
-	ret = __qcom_scm_pas_init_image(ctx->pas_id, mdata_phys, &res);
+	ret = __qcom_scm_pas_init_image(ctx->pas_id, mdata_phys, &res, size);
 	if (ret < 0)
 		qcom_tzmem_free(mdata_buf);
 	else
@@ -706,7 +714,7 @@ int qcom_scm_pas_init_image(u32 pas_id, const void *metadata, size_t size,
 
 	memcpy(mdata_buf, metadata, size);
 
-	ret = __qcom_scm_pas_init_image(pas_id, mdata_phys, &res);
+	ret = __qcom_scm_pas_init_image(pas_id, mdata_phys, &res, size);
 	if (ret < 0 || !ctx) {
 		dma_free_coherent(__scm->dev, size, mdata_buf, mdata_phys);
 	} else if (ctx) {
diff --git a/drivers/firmware/qcom/qcom_scm.h b/drivers/firmware/qcom/qcom_scm.h
index caab80a73e17..cb80e22a3d90 100644
--- a/drivers/firmware/qcom/qcom_scm.h
+++ b/drivers/firmware/qcom/qcom_scm.h
@@ -105,6 +105,7 @@ int qcom_scm_shm_bridge_enable(struct device *scm_dev);
 #define QCOM_SCM_PIL_PAS_SHUTDOWN	0x06
 #define QCOM_SCM_PIL_PAS_IS_SUPPORTED	0x07
 #define QCOM_SCM_PIL_PAS_MSS_RESET	0x0a
+#define QCOM_SCM_PIL_PAS_INIT_IMAGE_V2	0x1a
 #define QCOM_SCM_PIL_PAS_GET_RSCTABLE	0x21
 
 #define QCOM_SCM_SVC_IO			0x05
-- 
2.34.1