1/*
  2 * arch/powerpc/platforms/83xx/mpc834x_mds.c
  3 *
  4 * MPC834x MDS board specific routines
  5 *
  6 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
  7 *
  8 * This program is free software; you can redistribute  it and/or modify it
  9 * under  the terms of  the GNU General  Public License as published by the
 10 * Free Software Foundation;  either version 2 of the  License, or (at your
 11 * option) any later version.
 12 */
 13
 14#include <linux/stddef.h>
 15#include <linux/kernel.h>
 16#include <linux/init.h>
 17#include <linux/errno.h>
 18#include <linux/reboot.h>
 19#include <linux/pci.h>
 20#include <linux/kdev_t.h>
 21#include <linux/major.h>
 22#include <linux/console.h>
 23#include <linux/delay.h>
 24#include <linux/seq_file.h>
 25#include <linux/root_dev.h>
 26#include <linux/of_platform.h>
 27
 28#include <linux/atomic.h>
 29#include <asm/time.h>
 30#include <asm/io.h>
 31#include <asm/machdep.h>
 32#include <asm/ipic.h>
 33#include <asm/irq.h>
 34#include <asm/prom.h>
 35#include <asm/udbg.h>
 36#include <sysdev/fsl_soc.h>
 37#include <sysdev/fsl_pci.h>
 38
 39#include "mpc83xx.h"
 40
 41#define BCSR5_INT_USB		0x02
 42static int mpc834xemds_usb_cfg(void)
 43{
 44	struct device_node *np;
 45	void __iomem *bcsr_regs = NULL;
 46	u8 bcsr5;
 47
 48	mpc834x_usb_cfg();
 49	/* Map BCSR area */
 50	np = of_find_node_by_name(NULL, "bcsr");
 51	if (np) {
 52		struct resource res;
 53
 54		of_address_to_resource(np, 0, &res);
 55		bcsr_regs = ioremap(res.start, resource_size(&res));
 56		of_node_put(np);
 57	}
 58	if (!bcsr_regs)
 59		return -1;
 60
 61	/*
 62	 * if Processor Board is plugged into PIB board,
 63	 * force to use the PHY on Processor Board
 64	 */
 65	bcsr5 = in_8(bcsr_regs + 5);
 66	if (!(bcsr5 & BCSR5_INT_USB))
 67		out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
 68	iounmap(bcsr_regs);
 69	return 0;
 70}
 71
 72/* ************************************************************************
 73 *
 74 * Setup the architecture
 75 *
 76 */
 77static void __init mpc834x_mds_setup_arch(void)
 78{
 79	mpc83xx_setup_arch();
 80
 81	mpc834xemds_usb_cfg();
 82}
 83
 84machine_device_initcall(mpc834x_mds, mpc83xx_declare_of_platform_devices);
 85
 86/*
 87 * Called very early, MMU is off, device-tree isn't unflattened
 88 */
 89static int __init mpc834x_mds_probe(void)
 90{
 91	return of_machine_is_compatible("MPC834xMDS");
 92}
 93
 94define_machine(mpc834x_mds) {
 95	.name			= "MPC834x MDS",
 96	.probe			= mpc834x_mds_probe,
 97	.setup_arch		= mpc834x_mds_setup_arch,
 98	.init_IRQ		= mpc83xx_ipic_init_IRQ,
 99	.get_irq		= ipic_get_irq,
100	.restart		= mpc83xx_restart,
101	.time_init		= mpc83xx_time_init,
102	.calibrate_decr		= generic_calibrate_decr,
103	.progress		= udbg_progress,
104};