misc: sentinel: s400_api: Add get_events API

Add get_events API to retrieve any singular events that has occurred
since the FW has started from sentinel

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/include/asm/mach-imx/s400_api.h b/arch/arm/include/asm/mach-imx/s400_api.h
index 4819f20..79539b7 100644 (file)
--- a/arch/arm/include/asm/mach-imx/s400_api.h
+++ b/arch/arm/include/asm/mach-imx/s400_api.h
@@ -18,6 +18,7 @@
 #define AHAB_FWD_LIFECYCLE_UP_REQ_CID   0x95
 #define AHAB_READ_FUSE_REQ_CID 0x97
 #define AHAB_GET_FW_VERSION_CID        0x9D
+#define AHAB_GET_EVENTS_REQ_CID 0xA2
 #define AHAB_RELEASE_RDC_REQ_CID   0xC4
 #define AHAB_GET_FW_STATUS_CID   0xC5
 #define AHAB_WRITE_FUSE_REQ_CID        0xD6
@@ -58,5 +59,6 @@ int ahab_dump_buffer(u32 *buffer, u32 buffer_length);
 int ahab_get_info(struct sentinel_get_info_data *info, u32 *response);
 int ahab_get_fw_status(u32 *status, u32 *response);
 int ahab_release_m33_trout(void);
+int ahab_get_events(u32 *events, u32 *events_cnt, u32 *response);
 
 #endif

diff --git a/drivers/misc/sentinel/s400_api.c b/drivers/misc/sentinel/s400_api.c
index 65032f7..c6b4ef5 100644 (file)
--- a/drivers/misc/sentinel/s400_api.c
+++ b/drivers/misc/sentinel/s400_api.c
@@ -445,3 +445,48 @@ int ahab_release_m33_trout(void)
 
        return ret;
 }
+
+int ahab_get_events(u32 *events, u32 *events_cnt, u32 *response)
+{
+       struct udevice *dev = gd->arch.s400_dev;
+       int size = sizeof(struct sentinel_msg);
+       struct sentinel_msg msg;
+       int ret, i = 0;
+       u32 actual_events;
+
+       if (!dev) {
+               printf("s400 dev is not initialized\n");
+               return -ENODEV;
+       }
+
+       if (!events || !events_cnt || *events_cnt == 0) {
+               printf("Invalid parameters for %s\n", __func__);
+               return -EINVAL;
+       }
+
+       msg.version = AHAB_VERSION;
+       msg.tag = AHAB_CMD_TAG;
+       msg.size = 1;
+       msg.command = AHAB_GET_EVENTS_REQ_CID;
+
+       ret = misc_call(dev, false, &msg, size, &msg, size);
+       if (ret)
+               printf("Error: %s: ret %d, response 0x%x\n",
+                      __func__, ret, msg.data[0]);
+
+       if (response)
+               *response = msg.data[0];
+
+       if (!ret) {
+               actual_events = msg.data[1] & 0xffff;
+               if (*events_cnt < actual_events)
+                       actual_events = *events_cnt;
+
+               for (; i < actual_events; i++)
+                       events[i] = msg.data[i + 2];
+
+               *events_cnt = actual_events;
+       }
+
+       return ret;
+}