linux-kernel - [PATCH v5 06/11] firmware: qcom_scm: ipq5332: add support to pass metadata size

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Date:   Wed, 2 Aug 2023 19:36:01 +0530
From:   Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <mathieu.poirier@...aro.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <quic_eberman@...cinc.com>,
        <quic_gurus@...cinc.com>, <kvalo@...nel.org>,
        <quic_mmanikan@...cinc.com>, <loic.poulain@...aro.org>,
        <linux-arm-msm@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>
CC:     <quic_srichara@...cinc.com>, <quic_sjaganat@...cinc.com>,
        <quic_kathirav@...cinc.com>, <quic_anusha@...cinc.com>,
        <quic_varada@...cinc.com>
Subject: [PATCH v5 06/11] firmware: qcom_scm: ipq5332: add support to pass metadata size

IPQ5332 security software running under trustzone
requires metadata size. With V2 cmd, pass metadata
size as well.

Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
---
Changes in v5:
	- Rebased on linux-next

Changes in v4:
	- Rebased on linux-next

 drivers/firmware/qcom_scm.c | 8 ++++++++
 drivers/firmware/qcom_scm.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index 06fe8aca870d..5e1ff137ab52 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -495,6 +495,14 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size,
 
 	desc.args[1] = mdata_phys;
 
+	if (__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
+					 QCOM_SCM_PAS_INIT_IMAGE_V2)) {
+		desc.cmd = QCOM_SCM_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();
diff --git a/drivers/firmware/qcom_scm.h b/drivers/firmware/qcom_scm.h
index e6e512bd57d1..6ab5e7c77e8d 100644
--- a/drivers/firmware/qcom_scm.h
+++ b/drivers/firmware/qcom_scm.h
@@ -91,6 +91,7 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
 
 #define QCOM_SCM_SVC_PIL		0x02
 #define QCOM_SCM_PIL_PAS_INIT_IMAGE	0x01
+#define QCOM_SCM_PAS_INIT_IMAGE_V2	0x1a
 #define QCOM_SCM_PIL_PAS_MEM_SETUP	0x02
 #define QCOM_SCM_PIL_PAS_AUTH_AND_RESET	0x05
 #define QCOM_SCM_PIL_PAS_SHUTDOWN	0x06
-- 
2.34.1