1 files changed, 44 insertions, 0 deletions
diff --git a/plat/mediatek/drivers/timer/mt_timer.c b/plat/mediatek/drivers/timer/mt_timer.c
new file mode 100644
index 0000000..11e4572
--- /dev/null
+++ b/plat/mediatek/drivers/timer/mt_timer.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2020-2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <lib/mmio.h>
+#include <lib/mtk_init/mtk_init.h>
+#include <mt_timer.h>
+#include <platform_def.h>
+
+uint64_t normal_time_base;
+uint64_t atf_time_base;
+
+void sched_clock_init(uint64_t normal_base, uint64_t atf_base)
+{
+	normal_time_base += normal_base;
+	atf_time_base = atf_base;
+}
+
+uint64_t sched_clock(void)
+{
+	uint64_t cval;
+	uint64_t rel_base;
+
+	rel_base = read_cntpct_el0() - atf_time_base;
+	cval = ((rel_base * 1000U) / SYS_COUNTER_FREQ_IN_MHZ)
+		- normal_time_base;
+	return cval;
+}
+
+int mt_systimer_init(void)
+{
+	INFO("[%s] systimer initialization\n", __func__);
+
+	/* Enable access in NS mode */
+	mmio_write_32(CNTWACR_REG, CNT_WRITE_ACCESS_CTL_MASK);
+	mmio_write_32(CNTRACR_REG, CNT_READ_ACCESS_CTL_MASK);
+
+	return 0;
+}
+MTK_PLAT_SETUP_0_INIT(mt_systimer_init);