1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/timer/sandbox_timer.c b/drivers/timer/sandbox_timer.c
new file mode 100644
index 00000000000..e8b54a02965
--- /dev/null
+++ b/drivers/timer/sandbox_timer.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2015 Thomas Chou <thomas@wytron.com.tw>
+ */
+
+#include <dm.h>
+#include <errno.h>
+#include <timer.h>
+#include <os.h>
+
+#define SANDBOX_TIMER_RATE	1000000
+
+/* system timer offset in ms */
+static unsigned long sandbox_timer_offset;
+
+void timer_test_add_offset(unsigned long offset)
+{
+	sandbox_timer_offset += offset;
+}
+
+u64 notrace timer_early_get_count(void)
+{
+	return os_get_nsec() / 1000 + sandbox_timer_offset * 1000;
+}
+
+unsigned long notrace timer_early_get_rate(void)
+{
+	return SANDBOX_TIMER_RATE;
+}
+
+static notrace u64 sandbox_timer_get_count(struct udevice *dev)
+{
+	return timer_early_get_count();
+}
+
+static int sandbox_timer_probe(struct udevice *dev)
+{
+	struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+
+	if (CONFIG_IS_ENABLED(CPU) &&
+	    dev_read_bool(dev, "sandbox,timebase-frequency-fallback"))
+		return timer_timebase_fallback(dev);
+	else if (!uc_priv->clock_rate)
+		uc_priv->clock_rate = SANDBOX_TIMER_RATE;
+
+	return 0;
+}
+
+static const struct timer_ops sandbox_timer_ops = {
+	.get_count = sandbox_timer_get_count,
+};
+
+static const struct udevice_id sandbox_timer_ids[] = {
+	{ .compatible = "sandbox,timer" },
+	{ }
+};
+
+U_BOOT_DRIVER(sandbox_timer) = {
+	.name	= "sandbox_timer",
+	.id	= UCLASS_TIMER,
+	.of_match = sandbox_timer_ids,
+	.probe = sandbox_timer_probe,
+	.ops	= &sandbox_timer_ops,
+	.flags = DM_FLAG_PRE_RELOC,
+};
+
+/* This is here in case we don't have a device tree */
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
+U_BOOT_DRVINFO(sandbox_timer_non_fdt) = {
+	.name = "sandbox_timer",
+};
+#endif