path: root/arch/mips/tx4938/toshiba_rbtx4938/setup.c

/*
 * linux/arch/mips/tx4938/toshiba_rbtx4938/setup.c
 *
 * Setup pointers to hardware-dependent routines.
 * Copyright (C) 2000-2001 Toshiba Corporation
 *
 * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
 * terms of the GNU General Public License version 2. This program is
 * licensed "as is" without any warranty of any kind, whether express
 * or implied.
 *
 * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
 */
#include <linux/init.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/proc_fs.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/console.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/platform_device.h>

#include <asm/wbflush.h>
#include <asm/reboot.h>
#include <asm/irq.h>
#include <asm/time.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/bootinfo.h>
#include <asm/tx4938/rbtx4938.h>
#ifdef CONFIG_SERIAL_TXX9
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#endif

extern void rbtx4938_time_init(void) __init;
extern char * __init prom_getcmdline(void);
static inline void tx4938_report_pcic_status1(struct tx4938_pcic_reg *pcicptr);

/* These functions are used for rebooting or halting the machine*/
extern void rbtx4938_machine_restart(char *command);
extern void rbtx4938_machine_halt(void);
extern void rbtx4938_machine_power_off(void);

/* clocks */
unsigned int txx9_master_clock;
unsigned int txx9_cpu_clock;
unsigned int txx9_gbus_clock;

unsigned long rbtx4938_ce_base[8];
unsigned long rbtx4938_ce_size[8];
int txboard_pci66_mode;
static int tx4938_pcic_trdyto;	/* default: disabled */
static int tx4938_pcic_retryto;	/* default: disabled */
static int tx4938_ccfg_toeon = 1;

struct tx4938_pcic_reg *pcicptrs[4] = {
       tx4938_pcicptr  /* default setting for TX4938 */
};

static struct {
	unsigned long base;
	unsigned long size;
} phys_regions[16] __initdata;
static int num_phys_regions  __initdata;

#define PHYS_REGION_MINSIZE	0x10000

void rbtx4938_machine_halt(void)
{
        printk(KERN_NOTICE "System Halted\n");
	local_irq_disable();

	while (1)
		__asm__(".set\tmips3\n\t"
			"wait\n\t"
			".set\tmips0");
}

void rbtx4938_machine_power_off(void)
{
        rbtx4938_machine_halt();
        /* no return */
}

void rbtx4938_machine_restart(char *command)
{
	local_irq_disable();

	printk("Rebooting...");
	*rbtx4938_softresetlock_ptr = 1;
	*rbtx4938_sfvol_ptr = 1;
	*rbtx4938_softreset_ptr = 1;
	wbflush();

	while(1);
}

void __init
txboard_add_phys_region(unsigned long base, unsigned long size)
{
	if (num_phys_regions >= ARRAY_SIZE(phys_regions)) {
		printk("phys_region overflow\n");
		return;
	}
	phys_regions[num_phys_regions].base = base;
	phys_regions[num_phys_regions].size = size;
	num_phys_regions++;
}
unsigned long __init
txboard_find_free_phys_region(unsigned long begin, unsigned long end,
			      unsigned long size)
{
	unsigned long base;
	int i;

	for (base = begin / size * size; base < end; base += size) {
		for (i = 0; i < num_phys_regions; i++) {
			if (phys_regions[i].size &&
			    base <= phys_regions[i].base + (phys_regions[i].size - 1) &&
			    base + (size - 1) >= phys_regions[i].base)
				break;
		}
		if (i == num_phys_regions)
			return base;
	}
	return 0;
}
unsigned long __init
txboard_find_free_phys_region_shrink(unsigned long begin, unsigned long end,
				     unsigned long *size)
{
	unsigned long sz, base;
	for (sz = *size; sz >= PHYS_REGION_MINSIZE; sz /= 2) {
		base = txboard_find_free_phys_region(begin, end, sz);
		if (base) {
			*size = sz;