Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 46 insertions, 0 deletions

diff --git a/drivers/renesas/common/delay/micro_delay.c b/drivers/renesas/common/delay/micro_delay.c
new file mode 100644
index 0000000..a5e2a69
--- /dev/null
+++ b/drivers/renesas/common/delay/micro_delay.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2018-2020, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <arch_helpers.h>
+
+#include "micro_delay.h"
+
+#define RCAR_CONV_MICROSEC		1000000U
+
+void
+#if IMAGE_BL31
+	__attribute__ ((section(".system_ram")))
+#endif
+	rcar_micro_delay(uint64_t micro_sec)
+{
+	uint64_t freq;
+	uint64_t base_count;
+	uint64_t get_count;
+	uint64_t wait_time = 0U;
+
+	freq = read_cntfrq_el0();
+	base_count = read_cntpct_el0();
+	while (micro_sec > wait_time) {
+		get_count = read_cntpct_el0();
+		wait_time = ((get_count - base_count) * RCAR_CONV_MICROSEC) / freq;
+	}
+}
diff --git a/drivers/renesas/common/delay/micro_delay.h b/drivers/renesas/common/delay/micro_delay.h
new file mode 100644
index 0000000..37b71f8
--- /dev/null
+++ b/drivers/renesas/common/delay/micro_delay.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2015-2017, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MICRO_DELAY_H
+#define MICRO_DELAY_H
+
+#ifndef __ASSEMBLER__
+#include <stdint.h>
+void rcar_micro_delay(uint64_t micro_sec);
+#endif
+
+#endif /* MICRO_DELAY_H */