1 files changed, 56 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 00000000..63200bde
--- /dev/null
+++ b/plat/mediatek/mt8173/drivers/timer/mt_cpuxgpt.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <arch_helpers.h>
+#include <mcucfg.h>
+#include <mmio.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));
+}