1 files changed, 34 insertions, 0 deletions
diff --git a/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.c b/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.c
new file mode 100644
index 0000000..174a24d
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <lib/mmio.h>
+
+#include <mcucfg.h>
+#include <mt8173_def.h>
+#include <mt_cpuxgpt.h>
+
+static void write_cpuxgpt(unsigned int reg_index, unsigned int value)
+{
+	mmio_write_32((uintptr_t)&mt8173_mcucfg->xgpt_idx, reg_index);
+	mmio_write_32((uintptr_t)&mt8173_mcucfg->xgpt_ctl, value);
+}
+
+static void cpuxgpt_set_init_cnt(unsigned int countH, unsigned int countL)
+{
+	write_cpuxgpt(INDEX_CNT_H_INIT, countH);
+	/* update count when countL programmed */
+	write_cpuxgpt(INDEX_CNT_L_INIT, countL);
+}
+
+void generic_timer_backup(void)
+{
+	uint64_t cval;
+
+	cval = read_cntpct_el0();
+	cpuxgpt_set_init_cnt((uint32_t)(cval >> 32),
+			       (uint32_t)(cval & 0xffffffff));
+}