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-rw-r--r--arch/xtensa/kernel/platform.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c
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+++ b/arch/xtensa/kernel/platform.c
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+/*
+ * arch/xtensa/kernel/platform.c
+ *
+ * Default platform functions.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ *
+ * Chris Zankel <chris@zankel.net>
+ */
+
+#include <linux/printk.h>
+#include <linux/types.h>
+#include <asm/platform.h>
+#include <asm/timex.h>
+
+/*
+ * Default functions that are used if no platform specific function is defined.
+ * (Please, refer to arch/xtensa/include/asm/platform.h for more information)
+ */
+
+void __weak __init platform_init(bp_tag_t *first)
+{
+}
+
+void __weak __init platform_setup(char **cmd)
+{
+}
+
+void __weak platform_idle(void)
+{
+ __asm__ __volatile__ ("waiti 0" ::: "memory");
+}
+
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
+void __weak platform_calibrate_ccount(void)
+{
+ pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
+ ccount_freq = 10 * 1000000UL;
+}
+#endif