@@ -676,6 +676,84 @@ bool qcom_scm_pas_supported(u32 peripheral)
}
EXPORT_SYMBOL_GPL(qcom_scm_pas_supported);
+/**
+ * qcom_scm_msa_lock() - Lock given peripheral firmware region as MSA
+ *
+ * @peripheral: peripheral id
+ *
+ * Return 0 on success.
+ */
+int qcom_scm_msa_lock(u32 peripheral)
+{
+ int ret;
+ struct qcom_scm_desc desc = {
+ .svc = QCOM_SCM_SVC_PIL,
+ .cmd = QCOM_SCM_MSA_LOCK,
+ .arginfo = QCOM_SCM_ARGS(1),
+ .args[0] = peripheral,
+ .owner = ARM_SMCCC_OWNER_SIP,
+ };
+ struct qcom_scm_res res;
+
+ if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
+ QCOM_SCM_MSA_LOCK))
+ return 0;
+
+ ret = qcom_scm_clk_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_bw_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_call(__scm->dev, &desc, &res);
+ qcom_scm_bw_disable();
+ qcom_scm_clk_disable();
+
+ return ret ? : res.result[0];
+}
+EXPORT_SYMBOL_GPL(qcom_scm_msa_lock);
+
+/**
+ * qcom_scm_msa_unlock() - Unlock given peripheral MSA firmware region
+ *
+ * @peripheral: peripheral id
+ *
+ * Return 0 on success.
+ */
+int qcom_scm_msa_unlock(u32 peripheral)
+{
+ int ret;
+ struct qcom_scm_desc desc = {
+ .svc = QCOM_SCM_SVC_PIL,
+ .cmd = QCOM_SCM_MSA_UNLOCK,
+ .arginfo = QCOM_SCM_ARGS(1),
+ .args[0] = peripheral,
+ .owner = ARM_SMCCC_OWNER_SIP,
+ };
+ struct qcom_scm_res res;
+
+ if (!__qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
+ QCOM_SCM_MSA_UNLOCK))
+ return 0;
+
+ ret = qcom_scm_clk_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_bw_enable();
+ if (ret)
+ return ret;
+
+ ret = qcom_scm_call(__scm->dev, &desc, &res);
+ qcom_scm_bw_disable();
+ qcom_scm_clk_disable();
+
+ return ret ? : res.result[0];
+}
+EXPORT_SYMBOL_GPL(qcom_scm_msa_unlock);
+
static int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
{
struct qcom_scm_desc desc = {
@@ -97,6 +97,8 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
#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_MSA_LOCK 0x24
+#define QCOM_SCM_MSA_UNLOCK 0x25
#define QCOM_SCM_SVC_IO 0x05
#define QCOM_SCM_IO_READ 0x01
@@ -81,6 +81,8 @@ extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
extern int qcom_scm_pas_shutdown(u32 peripheral);
extern bool qcom_scm_pas_supported(u32 peripheral);
+extern int qcom_scm_msa_lock(u32 peripheral);
+extern int qcom_scm_msa_unlock(u32 peripheral);
extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val);
extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);
IPQ5332 user pd remoteproc firmwares need to be locked with MSA(modem secure access) features. This patch add support to lock/unlock MSA features. Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@quicinc.com> --- Changes in v5: - Moved to EXPORT_SYMBOL_GPL() because scm driver moved to using EXPORT_SYMBOL_GPL() now. Changes in v4: - Rebased on linux-next drivers/firmware/qcom_scm.c | 78 ++++++++++++++++++++++++++ drivers/firmware/qcom_scm.h | 2 + include/linux/firmware/qcom/qcom_scm.h | 2 + 3 files changed, 82 insertions(+)