GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) Marvell International Ltd. and its affiliates
+ * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
+ *
+ * Copyright (C) 2015 Stefan Roese <sr@denx.de>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/soc.h>
+
+#define TIMER_LOAD_VAL			0xffffffff
+
+static int init_done __attribute__((section(".data"))) = 0;
+
+/*
+ * Timer initialization
+ */
+int timer_init(void)
+{
+	/* Only init the timer once */
+	if (init_done)
+		return 0;
+	init_done = 1;
+
+	/* load value into timer */
+	writel(TIMER_LOAD_VAL, MVEBU_TIMER_BASE + 0x10);
+	writel(TIMER_LOAD_VAL, MVEBU_TIMER_BASE + 0x14);
+
+#if defined(CONFIG_ARCH_MVEBU)
+	/* On Armada XP / 38x ..., the 25MHz clock source needs to be enabled */
+	setbits_le32(MVEBU_TIMER_BASE + 0x00, BIT(11));
+#endif
+	/* enable timer in auto reload mode */
+	setbits_le32(MVEBU_TIMER_BASE + 0x00, 0x3);
+
+	return 0;
+}