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authorNava kishore Manne <nava.manne@xilinx.com>2019-02-06 16:37:19 +0530
committerMichal Simek <michal.simek@xilinx.com>2019-02-05 13:22:58 +0100
commitfe6f42cf6eb3183ebd6ab6b0b7dcbee2600c2baa (patch)
tree3e9094480e5d3a6308400f378de48048353a501f /drivers/firmware
parent62f0d7dc3bae9f7ce2701d6c8cfd3d93130017af (diff)
firmware: xilinx: Add zynqmp_pm_get_chipid() API
This patch adds a new API to provide access to the hardware related data like soc revision, IDCODE... etc. Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/xilinx/zynqmp.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 70b50377ae5f..16a23bc4c2c3 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -187,6 +187,29 @@ static int zynqmp_pm_get_api_version(u32 *version)
}
/**
+ * zynqmp_pm_get_chipid - Get silicon ID registers
+ * @idcode: IDCODE register
+ * @version: version register
+ *
+ * Return: Returns the status of the operation and the idcode and version
+ * registers in @idcode and @version.
+ */
+static int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
+{
+ u32 ret_payload[PAYLOAD_ARG_CNT];
+ int ret;
+
+ if (!idcode || !version)
+ return -EINVAL;
+
+ ret = zynqmp_pm_invoke_fn(PM_GET_CHIPID, 0, 0, 0, 0, ret_payload);
+ *idcode = ret_payload[1];
+ *version = ret_payload[2];
+
+ return ret;
+}
+
+/**
* zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version
* @version: Returned version value
*
@@ -509,6 +532,7 @@ static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
static const struct zynqmp_eemi_ops eemi_ops = {
.get_api_version = zynqmp_pm_get_api_version,
+ .get_chipid = zynqmp_pm_get_chipid,
.query_data = zynqmp_pm_query_data,
.clock_enable = zynqmp_pm_clock_enable,
.clock_disable = zynqmp_pm_clock_disable,