[XTENSA] Concentrate platforms into one platforms directory.

Create arch/xtensa/platforms/ directory to concentrate
all platforms under that subdirectory and moves the ISS platform
to that directory.

Signed-off-by: Chris Zankel <chris@zankel.net>

arch/xtensa/platforms/iss/setup.c

@@ -0,0 +1,110 @@
+/*
+ *
+ * arch/xtensa/platform-iss/setup.c
+ *
+ * Platform specific initialization.
+ *
+ * Authors: Chris Zankel <chris@zankel.net>
+ *          Joe Taylor <joe@tensilica.com>
+ *
+ * Copyright 2001 - 2005 Tensilica Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/blkdev.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/stringify.h>
+#include <linux/notifier.h>
+
+#include <asm/platform.h>
+#include <asm/bootparam.h>
+
+
+void __init platform_init(bp_tag_t* bootparam)
+{
+
+}
+
+void platform_halt(void)
+{
+	printk (" ** Called platform_halt(), looping forever! **\n");
+	while (1);
+}
+
+void platform_power_off(void)
+{
+	printk (" ** Called platform_power_off(), looping forever! **\n");
+	while (1);
+}
+void platform_restart(void)
+{
+	/* Flush and reset the mmu, simulate a processor reset, and
+	 * jump to the reset vector. */
+
+	__asm__ __volatile__("movi	a2, 15\n\t"
+			     "wsr	a2, " __stringify(ICOUNTLEVEL) "\n\t"
+			     "movi	a2, 0\n\t"
+			     "wsr	a2, " __stringify(ICOUNT) "\n\t"
+			     "wsr	a2, " __stringify(IBREAKENABLE) "\n\t"
+			     "wsr	a2, " __stringify(LCOUNT) "\n\t"
+			     "movi	a2, 0x1f\n\t"
+			     "wsr	a2, " __stringify(PS) "\n\t"
+			     "isync\n\t"
+			     "jx	%0\n\t"
+			     :
+			     : "a" (XCHAL_RESET_VECTOR_VADDR)
+			     : "a2");
+
+	/* control never gets here */
+}
+
+extern void iss_net_poll(void);
+
+const char twirl[]="|/-\\|/-\\";
+
+void platform_heartbeat(void)
+{
+#if 0
+	static int i = 0, j = 0;
+
+	if (--i < 0) {
+		i = 99;
+		printk("\r%c\r", twirl[j++]);
+		if (j == 8)
+			j = 0;
+	}
+#endif
+}
+
+
+
+static int
+iss_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+	__asm__ __volatile__("movi a2, -1; simcall\n");
+	return NOTIFY_DONE;
+}
+
+static struct notifier_block iss_panic_block = {
+	iss_panic_event,
+	NULL,
+	0
+};
+
+void __init platform_setup(char **p_cmdline)
+{
+	atomic_notifier_chain_register(&panic_notifier_list, &iss_panic_block);
+}