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-rw-r--r--arch/powerpc/platforms/ps3/time.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/ps3/time.c b/arch/powerpc/platforms/ps3/time.c
new file mode 100644
index 000000000..c9bfc113a
--- /dev/null
+++ b/arch/powerpc/platforms/ps3/time.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * PS3 time and rtc routines.
+ *
+ * Copyright (C) 2006 Sony Computer Entertainment Inc.
+ * Copyright 2006 Sony Corp.
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/rtc.h>
+
+#include <asm/firmware.h>
+#include <asm/lv1call.h>
+#include <asm/ps3.h>
+
+#include "platform.h"
+
+void __init ps3_calibrate_decr(void)
+{
+ int result;
+ u64 tmp;
+
+ result = ps3_repository_read_be_tb_freq(0, &tmp);
+ BUG_ON(result);
+
+ ppc_tb_freq = tmp;
+ ppc_proc_freq = ppc_tb_freq * 40;
+}
+
+static u64 read_rtc(void)
+{
+ int result;
+ u64 rtc_val;
+ u64 tb_val;
+
+ result = lv1_get_rtc(&rtc_val, &tb_val);
+ BUG_ON(result);
+
+ return rtc_val;
+}
+
+time64_t __init ps3_get_boot_time(void)
+{
+ return read_rtc() + ps3_os_area_get_rtc_diff();
+}
+
+static int __init ps3_rtc_init(void)
+{
+ struct platform_device *pdev;
+
+ if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
+ return -ENODEV;
+
+ pdev = platform_device_register_simple("rtc-ps3", -1, NULL, 0);
+
+ return PTR_ERR_OR_ZERO(pdev);
+}
+device_initcall(ps3_rtc_init);