add xidatong-riscv64 board

2022-07-05 10:54:24 +08:00
parent b4a92c91f5
commit 74fd934a02
106 changed files with 28396 additions and 1 deletions
@@ -0,0 +1,49 @@
+/* Copyright 2018 Canaan Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+* @file sleep.c
+* @brief add from Canaan k210 SDK
+*                https://canaan-creative.com/developer
+* @version 1.0 
+* @author AIIT XUOS Lab
+* @date 2022-07-25
+*/
+
+#include "sleep.h"
+#include "sysctl.h"
+
+int usleep(uint64_t usec)
+{
+    uint64_t cycle = read_cycle();
+    uint64_t nop_all = usec * SysctlClockGetFreq(SYSCTL_CLOCK_CPU) / 1000000UL;
+    while (1)
+    {
+        if(read_cycle() - cycle >= nop_all)
+            break;
+    }
+    return 0;
+}
+
+int msleep(uint64_t msec)
+{
+    return (unsigned int)usleep(msec * 1000);
+}
+
+unsigned int sleep(unsigned int seconds)
+{
+    return (unsigned int)msleep(seconds * 1000);
+}
+