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	if (ppc_md.progress)
80		ppc_md.progress("mpc834x_mds_setup_arch()", 0);
81
82	mpc83xx_setup_pci();
83
84	mpc834xemds_usb_cfg();
85}
86
87machine_device_initcall(mpc834x_mds, mpc83xx_declare_of_platform_devices);
88
89/*
90 * Called very early, MMU is off, device-tree isn't unflattened
91 */
92static int __init mpc834x_mds_probe(void)
93{
94	unsigned long root = of_get_flat_dt_root();
95
96	return of_flat_dt_is_compatible(root, "MPC834xMDS");
97}
98
99define_machine(mpc834x_mds) {
100	.name			= "MPC834x MDS",
101	.probe			= mpc834x_mds_probe,
102	.setup_arch		= mpc834x_mds_setup_arch,
103	.init_IRQ		= mpc83xx_ipic_init_IRQ,
104	.get_irq		= ipic_get_irq,
105	.restart		= mpc83xx_restart,
106	.time_init		= mpc83xx_time_init,
107	.calibrate_decr		= generic_calibrate_decr,
108	.progress		= udbg_progress,
109};
110