[ARCH/AARCH64] Update Hypercall API

Signed-off-by: GuEe-GUI <[email protected]>

Author: GuEe-GUI

libcpu/aarch64/common/hypercall.c

@@ -1,16 +1,40 @@
 /*
- * Copyright (c) 2006-2020, RT-Thread Development Team
+ * Copyright (c) 2006-2023, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  * 2022-02-24     GuEe-GUI     first version
+ * 2023-02-21     GuEe-GUI     update API
  */
 
 #include <hypercall.h>
 
-rt_err_t rt_hv_stage2_map(unsigned long paddr, unsigned long size)
+rt_err_t rt_hv_version(rt_uint32_t *out_version)
 {
-    return rt_hw_hypercall(120, paddr & (~4095), (paddr & (~4095)) + size, (1 << 0) | (1 << 1) | (1 << 4), 0, 0, 0, 0);
+    if (out_version)
+    {
+        *out_version = rt_hw_hypercall(HYPERCALL_START + 0, 0, 0, 0, 0, 0, 0, 0);
+
+        if ((int)*out_version < 0)
+        {
+            return *out_version;
+        }
+    }
+
+    return -RT_EINVAL;
+}
+
+rt_err_t rt_hv_debug(rt_uint32_t id, rt_uint32_t argc,
+        rt_ubase_t arg0, rt_ubase_t arg1, rt_ubase_t arg2,
+        rt_ubase_t arg3, rt_ubase_t arg4)
+{
+    return rt_hw_hypercall(HYPERCALL_START + 1, id,
+            arg0, arg1, arg2, arg3, arg4, argc);
+}
+
+rt_err_t rt_hv_console(char c)
+{
+    return rt_hw_hypercall(HYPERCALL_START + 2, c, 0, 0, 0, 0, 0, 0);
 }

libcpu/aarch64/common/include/hypercall.h

@@ -1,27 +1,37 @@
 /*
- * Copyright (c) 2006-2020, RT-Thread Development Team
+ * Copyright (c) 2006-2023, RT-Thread Development Team
  *
  * SPDX-License-Identifier: Apache-2.0
  *
  * Change Logs:
  * Date           Author       Notes
  * 2022-02-24     GuEe-GUI     first version
+ * 2023-02-21     GuEe-GUI     update API
  */
 
 #ifndef __HYPERCALL_H__
 #define __HYPERCALL_H__
 
 #include <rtdef.h>
+#include <smccc.h>
+
+#define HYPERCALL_START 0xc5000000 /* HVC64 */
+#define HYPERCALL_END   0xc500ffff /* HVC64 */
 
 rt_inline rt_uint32_t rt_hw_hypercall(rt_uint32_t w0, rt_uint64_t x1, rt_uint64_t x2,
         rt_uint64_t x3, rt_uint64_t x4, rt_uint64_t x5, rt_uint64_t x6, rt_uint32_t w7)
 {
-    register rt_uint64_t ret __asm__ ("x0");
-    __asm__ volatile ("hvc #0");
+    struct arm_smccc_res_t res;
+
+    arm_smccc_hvc(w0, x1, x2, x3, x4, x5, x6, w7, &res, RT_NULL);
 
-    return (rt_uint32_t)ret;
+    return res.a0;
 }
 
-rt_err_t rt_hv_stage2_map(unsigned long paddr, unsigned long size);
+rt_err_t rt_hv_version(rt_uint32_t *out_version);
+rt_err_t rt_hv_debug(rt_uint32_t id, rt_uint32_t argc,
+        rt_ubase_t arg0, rt_ubase_t arg1, rt_ubase_t arg2,
+        rt_ubase_t arg3, rt_ubase_t arg4);
+rt_err_t rt_hv_console(char c);
 
-#endif
+#endif /* __HYPERCALL_H__ */