1 files changed, 141 insertions, 0 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/prom.c b/arch/mips/pmc-sierra/yosemite/prom.c
new file mode 100644
index 000000000000..1fb3e697948d
--- /dev/null
+++ b/arch/mips/pmc-sierra/yosemite/prom.c
@@ -0,0 +1,141 @@
+/*
+ * 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.
+ *
+ * Copyright (C) 2003, 2004 PMC-Sierra Inc.
+ * Author: Manish Lachwani (lachwani@pmc-sierra.com)
+ * Copyright (C) 2004 Ralf Baechle
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/smp.h>
+
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+#include <asm/bootinfo.h>
+#include <asm/pmon.h>
+
+#ifdef CONFIG_SMP
+extern void prom_grab_secondary(void);
+#else
+#define prom_grab_secondary() do { } while (0)
+#endif
+
+#include "setup.h"
+
+struct callvectors *debug_vectors;
+
+extern unsigned long yosemite_base;
+extern unsigned long cpu_clock;
+
+const char *get_system_type(void)
+{
+	return "PMC-Sierra Yosemite";
+}
+
+static void prom_cpu0_exit(void *arg)
+{
+	void *nvram = (void *) YOSEMITE_RTC_BASE;
+
+	/* Ask the NVRAM/RTC/watchdog chip to assert reset in 1/16 second */
+	writeb(0x84, nvram + 0xff7);
+
+	/* wait for the watchdog to go off */
+	mdelay(100 + (1000 / 16));
+
+	/* if the watchdog fails for some reason, let people know */
+	printk(KERN_NOTICE "Watchdog reset failed\n");
+}
+
+/*
+ * Reset the NVRAM over the local bus
+ */
+static void prom_exit(void)
+{
+#ifdef CONFIG_SMP
+	if (smp_processor_id())
+		/* CPU 1 */
+		smp_call_function(prom_cpu0_exit, NULL, 1, 1);
+#endif
+	prom_cpu0_exit(NULL);
+}
+
+/*
+ * Halt the system
+ */
+static void prom_halt(void)
+{
+	printk(KERN_NOTICE "\n** You can safely turn off the power\n");
+	while (1)
+		__asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0");
+}
+
+/*
+ * Init routine which accepts the variables from PMON
+ */
+void __init prom_init(void)
+{
+	int argc = fw_arg0;
+	char **arg = (char **) fw_arg1;
+	char **env = (char **) fw_arg2;
+	struct callvectors *cv = (struct callvectors *) fw_arg3;
+	int i = 0;
+
+	/* Callbacks for halt, restart */
+	_machine_restart = (void (*)(char *)) prom_exit;
+	_machine_halt = prom_halt;
+	_machine_power_off = prom_halt;
+
+	debug_vectors = cv;
+	arcs_cmdline[0] = '\0';
+
+	/* Get the boot parameters */
+	for (i = 1; i < argc; i++) {
+		if (strlen(arcs_cmdline) + strlen(arg[i] + 1) >=
+		    sizeof(arcs_cmdline))
+			break;
+
+		strcat(arcs_cmdline, arg[i]);
+		strcat(arcs_cmdline, " ");
+	}
+
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+	if ((strstr(arcs_cmdline, "console=ttyS")) == NULL)
+		strcat(arcs_cmdline, "console=ttyS0,115200");
+#endif
+
+	while (*env) {
+		if (strncmp("ocd_base", *env, strlen("ocd_base")) == 0)
+			yosemite_base =
+			    simple_strtol(*env + strlen("ocd_base="), NULL,
+					  16);
+
+		if (strncmp("cpuclock", *env, strlen("cpuclock")) == 0)
+			cpu_clock =
+			    simple_strtol(*env + strlen("cpuclock="), NULL,
+					  10);
+
+		env++;
+	}
+
+	mips_machgroup = MACH_GROUP_TITAN;
+	mips_machtype = MACH_TITAN_YOSEMITE;
+
+	prom_grab_secondary();
+}
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+void __init prom_fixup_mem_map(unsigned long start, unsigned long end)
+{
+}