1 files changed, 40 insertions, 0 deletions
diff --git a/board/starfive/visionfive2/starfive_visionfive2.c b/board/starfive/visionfive2/starfive_visionfive2.c
new file mode 100644
index 00000000000..613fe793c43
--- /dev/null
+++ b/board/starfive/visionfive2/starfive_visionfive2.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 StarFive Technology Co., Ltd.
+ * Author: Yanhong Wang<yanhong.wang@starfivetech.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <cpu_func.h>
+#include <linux/bitops.h>
+
+#define JH7110_L2_PREFETCHER_BASE_ADDR		0x2030000
+#define JH7110_L2_PREFETCHER_HART_OFFSET	0x2000
+
+/* enable U74-mc hart1~hart4 prefetcher */
+static void enable_prefetcher(void)
+{
+	u8 hart;
+	u32 *reg;
+
+	/* JH7110 use U74MC CORE IP, it include five cores(one S7 and four U7),
+	 * but only U7 cores support prefetcher configuration
+	 */
+	for (hart = 1; hart < 5; hart++) {
+		reg = (void *)(u64)(JH7110_L2_PREFETCHER_BASE_ADDR
+					+ hart * JH7110_L2_PREFETCHER_HART_OFFSET);
+
+		mb(); /* memory barrier */
+		setbits_le32(reg, 0x1);
+		mb(); /* memory barrier */
+	}
+}
+
+int board_init(void)
+{
+	enable_caches();
+	enable_prefetcher();
+
+	return 0;
+}