initial commit

port/moonlight/aclint.h

@@ -0,0 +1,39 @@
+#ifndef _DEVICES_ACLINT_H
+#define _DEVICES_ACLINT_H
+
+#include "gen/aclint.h"
+#include <stdint.h>
+
+static void set_aclint_mtime(volatile aclint_t* reg, uint64_t value) {
+    set_aclint_mtime_hi(reg, (uint32_t)(value >> 32));
+    set_aclint_mtime_lo(reg, (uint32_t)value);
+}
+
+static uint64_t get_aclint_mtime(volatile aclint_t* reg) {
+#if(__riscv_xlen == 64)
+    // this assume little endianness
+    volatile uint64_t* mtime = (volatile uint64_t*)(uint64_t)(&reg->MTIME_LO);
+    return *mtime;
+#else
+    uint32_t mtimeh_val;
+    uint32_t mtimel_val;
+    do {
+        mtimeh_val = get_aclint_mtime_hi(reg);
+        mtimel_val = get_aclint_mtime_lo(reg);
+    } while(mtimeh_val != get_aclint_mtime_hi(reg));
+    return (uint64_t)((((uint64_t)mtimeh_val) << 32) | mtimel_val);
+#endif
+}
+
+static void set_aclint_mtimecmp(volatile aclint_t* reg, uint64_t value) {
+    set_aclint_mtimecmp0lo(reg, (uint32_t)0xFFFFFFFF);
+    set_aclint_mtimecmp0hi(reg, (uint32_t)(value >> 32));
+    set_aclint_mtimecmp0lo(reg, (uint32_t)value);
+}
+
+static uint64_t get_aclint_mtimecmp(volatile aclint_t* reg) {
+    uint64_t value = ((uint64_t)get_aclint_mtimecmp0hi(reg) << 32) | (uint64_t)get_aclint_mtimecmp0lo(reg);
+    return value;
+}
+
+#endif /* _DEVICES_ACLINT_H */