Add-NXP93-ELE-events-fetch

arch/arm64/src/imx9/hardware/imx9_ele.h

@@ -37,7 +37,9 @@
 #define AHAB_RESP_TAG           0xe1
 #define ELE_RELEASE_RDC_REQ     0xc4
 #define ELE_READ_FUSE_REQ       0x97
+#define ELE_GET_EVENTS          0xa2
 #define ELE_DERIVE_KEY_REQ      0xa9
+#define ELE_FWD_LIFECYCLE_UP    0x95
 #define ELE_OK                  0xd6
 
 #define ELE_MU_TCR (IMX9_S3MUA_BASE+ 0x120)
@@ -50,6 +52,8 @@
 #define ELE_MU_TR(i) (IMX9_S3MUA_BASE + 0x200 + (i) * 4)
 #define ELE_MU_RR(i) (IMX9_S3MUA_BASE + 0x280 + (i) * 4)
 
+#define FSB_LC_REG              0x4751041cUL
+
 struct ele_header_t
 {
   union

arch/arm64/src/imx9/imx9_ele.c

@@ -257,3 +257,61 @@ int imx9_ele_get_key(uint8_t *key, size_t key_size,
   return -EIO;
 }
 
+int imx9_ele_get_events(uint32_t *buffer, size_t buffer_size)
+{
+  size_t events_num;
+  size_t i;
+
+  msg.header.version = AHAB_VERSION;
+  msg.header.tag = AHAB_CMD_TAG;
+  msg.header.size = 1;
+  msg.header.command = ELE_GET_EVENTS;
+
+  imx9_ele_sendmsg(&msg);
+  imx9_ele_receivemsg(&msg);
+
+  if ((msg.data[0] & 0xff) == ELE_OK)
+    {
+      events_num = msg.data[1] & 0xffff;
+      if (buffer)
+        {
+          for (i = 0; (i < buffer_size) && (i < events_num); i++)
+            {
+              buffer[i] =  msg.data[i + 2];
+            }
+
+          return (int)i;
+        }
+      else
+        {
+          return (int)events_num;
+        }
+    }
+
+  return -EIO;
+}
+
+int imx9_ele_close_device(void)
+{
+  msg.header.version = AHAB_VERSION;
+  msg.header.tag = AHAB_CMD_TAG;
+  msg.header.size = 2;
+  msg.header.command = ELE_FWD_LIFECYCLE_UP;
+  msg.data[0] = 0x08;
+
+  imx9_ele_sendmsg(&msg);
+  imx9_ele_receivemsg(&msg);
+
+  if ((msg.data[0] & 0xff) == ELE_OK)
+    {
+      return 0;
+    }
+
+  return -EIO;
+}
+
+uint32_t imx9_ele_get_lifecycle(void)
+{
+  return (getreg32(FSB_LC_REG) & 0x3ff);
+}
+

arch/arm64/src/imx9/imx9_ele.h

@@ -111,4 +111,54 @@ uint32_t imx9_ele_read_common_fuse(uint32_t fuse_id);
 int imx9_ele_get_key(uint8_t *key, size_t key_size,
                      uint8_t *ctx, size_t ctx_size);
 
+/****************************************************************************
+ * Name: imx9_ele_get_events
+ *
+ * Description:
+ *   Trusted Resource Domain Controller AHAB interface.  This function
+ *   communicates with the Advanced High Assurance Boot (AHAB) image that
+ *   should reside in the particular address. This returns ELE events.
+ *
+ * Input Parameters:
+ *   buffer        -  Event buffer
+ *   buffer_size   -  Event buffer size
+ *
+ * Returned Value:
+ *  Zero (OK) is returned if no envents success. A negated errno value
+ *  is returned on failure. Positive value is number of events read.
+ *
+ ****************************************************************************/
+
+int imx9_ele_get_events(uint32_t *buffer, size_t buffer_size);
+
+/****************************************************************************
+ * Name: imx9_ele_close_device
+ *
+ * Description:
+ *   Trusted Resource Domain Controller AHAB interface.  This function
+ *   communicates with the Advanced High Assurance Boot (AHAB) image that
+ *   should reside in the particular address. This sets device to
+ *   OEM close state. This operation is irreversible.
+ *
+ * Returned Value:
+ *  Zero (OK) is returned if no envents success. A negated errno value
+ *  is returned on failure.
+ *
+ ****************************************************************************/
+
+int imx9_ele_close_device(void);
+
+/****************************************************************************
+ * Name: imx9_ele_get_lifecycle
+ *
+ * Description:
+ *   This returns devices lifecycle value
+ *
+ * Returned Value:
+ *  Lifecycle value
+ *
+ ****************************************************************************/
+
+uint32_t imx9_ele_get_lifecycle(void);
+
 #endif /* __ARCH_ARM64_SRC_IMX9_IMX9_ELE_H */