1/*
2 * Copyright 2006 Freescale Semiconductor, Inc. All rights reserved.
3 *
4 * Description:
5 * MPC832xE MDS board specific routines.
6 *
7 * This program is free software; you can redistribute  it and/or modify it
8 * under  the terms of  the GNU General  Public License as published by the
9 * Free Software Foundation;  either version 2 of the  License, or (at your
10 * option) any later version.
11 */
12
13#include <linux/stddef.h>
14#include <linux/kernel.h>
15#include <linux/init.h>
16#include <linux/errno.h>
17#include <linux/reboot.h>
18#include <linux/pci.h>
19#include <linux/kdev_t.h>
20#include <linux/major.h>
21#include <linux/console.h>
22#include <linux/delay.h>
23#include <linux/seq_file.h>
24#include <linux/root_dev.h>
25#include <linux/initrd.h>
26#include <linux/of_platform.h>
27#include <linux/of_device.h>
28
29#include <linux/atomic.h>
30#include <asm/time.h>
31#include <asm/io.h>
32#include <asm/machdep.h>
33#include <asm/ipic.h>
34#include <asm/irq.h>
35#include <asm/prom.h>
36#include <asm/udbg.h>
37#include <sysdev/fsl_soc.h>
38#include <sysdev/fsl_pci.h>
39#include <asm/qe.h>
40#include <asm/qe_ic.h>
41
42#include "mpc83xx.h"
43
44#undef DEBUG
45#ifdef DEBUG
46#define DBG(fmt...) udbg_printf(fmt)
47#else
48#define DBG(fmt...)
49#endif
50
51/* ************************************************************************
52 *
53 * Setup the architecture
54 *
55 */
56static void __init mpc832x_sys_setup_arch(void)
57{
58	struct device_node *np;
59	u8 __iomem *bcsr_regs = NULL;
60
61	if (ppc_md.progress)
62		ppc_md.progress("mpc832x_sys_setup_arch()", 0);
63
64	/* Map BCSR area */
65	np = of_find_node_by_name(NULL, "bcsr");
66	if (np) {
67		struct resource res;
68
69		of_address_to_resource(np, 0, &res);
70		bcsr_regs = ioremap(res.start, resource_size(&res));
71		of_node_put(np);
72	}
73
74	mpc83xx_setup_pci();
75
76#ifdef CONFIG_QUICC_ENGINE
77	qe_reset();
78
79	if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
80		par_io_init(np);
81		of_node_put(np);
82
83		for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
84			par_io_of_config(np);
85	}
86
87	if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
88			!= NULL){
89		/* Reset the Ethernet PHYs */
90#define BCSR8_FETH_RST 0x50
91		clrbits8(&bcsr_regs[8], BCSR8_FETH_RST);
92		udelay(1000);
93		setbits8(&bcsr_regs[8], BCSR8_FETH_RST);
94		iounmap(bcsr_regs);
95		of_node_put(np);
96	}
97#endif				/* CONFIG_QUICC_ENGINE */
98}
99
100machine_device_initcall(mpc832x_mds, mpc83xx_declare_of_platform_devices);
101
102/*
103 * Called very early, MMU is off, device-tree isn't unflattened
104 */
105static int __init mpc832x_sys_probe(void)
106{
107        unsigned long root = of_get_flat_dt_root();
108
109        return of_flat_dt_is_compatible(root, "MPC832xMDS");
110}
111
112define_machine(mpc832x_mds) {
113	.name 		= "MPC832x MDS",
114	.probe 		= mpc832x_sys_probe,
115	.setup_arch 	= mpc832x_sys_setup_arch,
116	.init_IRQ	= mpc83xx_ipic_and_qe_init_IRQ,
117	.get_irq 	= ipic_get_irq,
118	.restart 	= mpc83xx_restart,
119	.time_init 	= mpc83xx_time_init,
120	.calibrate_decr	= generic_calibrate_decr,
121	.progress 	= udbg_progress,
122};
123