[PATCH v2 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol
Peng Fan
peng.fan at nxp.com
Thu Jul 10 01:33:27 PDT 2025
MISC protocol supports discovering the System Manager(SM) build
information including build commit, build time and etc. Retrieve the
information from SM.
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
.../firmware/arm_scmi/vendors/imx/imx-sm-misc.c | 42 ++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
index a8915d3b4df518719d56bfff38922625ad9b70f6..b301f09ab6cc65d286edb8819031d7f4c02e8272 100644
--- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
+++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
@@ -25,6 +25,7 @@
enum scmi_imx_misc_protocol_cmd {
SCMI_IMX_MISC_CTRL_SET = 0x3,
SCMI_IMX_MISC_CTRL_GET = 0x4,
+ SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
};
@@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out {
__le32 val[];
};
+struct scmi_imx_misc_buildinfo_out {
+ __le32 buildnum;
+ __le32 buildcommit;
+#define MISC_MAX_BUILDDATE 16
+ u8 builddate[MISC_MAX_BUILDDATE];
+#define MISC_MAX_BUILDTIME 16
+ u8 buildtime[MISC_MAX_BUILDTIME];
+};
+
static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
struct scmi_imx_misc_info *mi)
{
@@ -272,6 +282,34 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
return ret;
}
+static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *ph)
+{
+ struct scmi_imx_misc_buildinfo_out *out;
+ char date[MISC_MAX_BUILDDATE] = {'\0'};
+ char time[MISC_MAX_BUILDTIME] = {'\0'};
+ struct scmi_xfer *t;
+ int ret;
+
+ ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0,
+ sizeof(*out), &t);
+ if (ret)
+ return ret;
+
+ ret = ph->xops->do_xfer(ph, t);
+ if (!ret) {
+ out = t->rx.buf;
+ strscpy(date, out->builddate, MISC_MAX_BUILDDATE);
+ strscpy(time, out->buildtime, MISC_MAX_BUILDTIME);
+ dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n",
+ le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit),
+ date, time);
+ }
+
+ ph->xops->xfer_put(ph, t);
+
+ return ret;
+}
+
static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
.misc_ctrl_set = scmi_imx_misc_ctrl_set,
.misc_ctrl_get = scmi_imx_misc_ctrl_get,
@@ -299,6 +337,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
if (ret)
return ret;
+ ret = scmi_imx_misc_discover_build_info(ph);
+ if (ret)
+ return ret;
+
return ph->set_priv(ph, minfo, version);
}
--
2.37.1
More information about the linux-arm-kernel
mailing list