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Li Yangbc141de2006-10-03 23:17:51 -05001/*
2 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
3 *
4 * Author: Li Yang <LeoLi@freescale.com>
5 * Yin Olivia <Hong-hua.Yin@freescale.com>
6 *
7 * Description:
Kumar Gala322d05a2007-02-17 10:13:56 -06008 * MPC8360E MDS board specific routines.
Li Yangbc141de2006-10-03 23:17:51 -05009 *
10 * Changelog:
11 * Jun 21, 2006 Initial version
12 *
Kumar Gala322d05a2007-02-17 10:13:56 -060013 * This program is free software; you can redistribute it and/or modify it
Li Yangbc141de2006-10-03 23:17:51 -050014 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 */
18
19#include <linux/stddef.h>
20#include <linux/kernel.h>
21#include <linux/init.h>
22#include <linux/errno.h>
23#include <linux/reboot.h>
24#include <linux/pci.h>
25#include <linux/kdev_t.h>
26#include <linux/major.h>
27#include <linux/console.h>
28#include <linux/delay.h>
29#include <linux/seq_file.h>
30#include <linux/root_dev.h>
31#include <linux/initrd.h>
32
Li Yangf5a37b02006-10-11 19:04:22 +080033#include <asm/of_device.h>
Li Yang3b6eb6a2007-01-30 13:33:01 +080034#include <asm/of_platform.h>
Li Yangbc141de2006-10-03 23:17:51 -050035#include <asm/system.h>
36#include <asm/atomic.h>
37#include <asm/time.h>
38#include <asm/io.h>
39#include <asm/machdep.h>
40#include <asm/ipic.h>
41#include <asm/bootinfo.h>
42#include <asm/irq.h>
43#include <asm/prom.h>
44#include <asm/udbg.h>
45#include <sysdev/fsl_soc.h>
46#include <asm/qe.h>
47#include <asm/qe_ic.h>
48
49#include "mpc83xx.h"
50
51#undef DEBUG
52#ifdef DEBUG
53#define DBG(fmt...) udbg_printf(fmt)
54#else
55#define DBG(fmt...)
56#endif
57
58#ifndef CONFIG_PCI
59unsigned long isa_io_base = 0;
60unsigned long isa_mem_base = 0;
61#endif
62
63static u8 *bcsr_regs = NULL;
64
Li Yangbc141de2006-10-03 23:17:51 -050065/* ************************************************************************
66 *
67 * Setup the architecture
68 *
69 */
Kumar Gala322d05a2007-02-17 10:13:56 -060070static void __init mpc836x_mds_setup_arch(void)
Li Yangbc141de2006-10-03 23:17:51 -050071{
72 struct device_node *np;
73
74 if (ppc_md.progress)
Kumar Gala322d05a2007-02-17 10:13:56 -060075 ppc_md.progress("mpc836x_mds_setup_arch()", 0);
Li Yangbc141de2006-10-03 23:17:51 -050076
Li Yangbc141de2006-10-03 23:17:51 -050077 /* Map BCSR area */
78 np = of_find_node_by_name(NULL, "bcsr");
79 if (np != 0) {
80 struct resource res;
81
82 of_address_to_resource(np, 0, &res);
83 bcsr_regs = ioremap(res.start, res.end - res.start +1);
84 of_node_put(np);
85 }
86
87#ifdef CONFIG_PCI
88 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
89 add_bridge(np);
Li Yangbc141de2006-10-03 23:17:51 -050090 ppc_md.pci_exclude_device = mpc83xx_exclude_device;
91#endif
92
93#ifdef CONFIG_QUICC_ENGINE
94 qe_reset();
95
Li Yang06cd9392007-01-17 14:42:22 +080096 if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
Li Yangbc141de2006-10-03 23:17:51 -050097 par_io_init(np);
98 of_node_put(np);
99
100 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
101 par_io_of_config(np);
102 }
103
104 if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
105 != NULL){
106 /* Reset the Ethernet PHY */
107 bcsr_regs[9] &= ~0x20;
108 udelay(1000);
109 bcsr_regs[9] |= 0x20;
110 iounmap(bcsr_regs);
111 of_node_put(np);
112 }
113
114#endif /* CONFIG_QUICC_ENGINE */
Li Yangbc141de2006-10-03 23:17:51 -0500115}
116
Kumar Galaf7993ed2007-02-17 09:56:49 -0600117static struct of_device_id mpc836x_ids[] = {
118 { .type = "soc", },
119 { .compatible = "soc", },
120 { .type = "qe", },
121 {},
122};
Li Yangf5a37b02006-10-11 19:04:22 +0800123
Kumar Galaf7993ed2007-02-17 09:56:49 -0600124static int __init mpc836x_declare_of_platform_devices(void)
125{
Kumar Gala322d05a2007-02-17 10:13:56 -0600126 if (!machine_is(mpc836x_mds))
Kumar Gala336c3c22007-02-17 09:10:44 -0600127 return 0;
128
Kumar Galaf7993ed2007-02-17 09:56:49 -0600129 /* Publish the QE devices */
130 of_platform_bus_probe(NULL, mpc836x_ids, NULL);
Li Yangf5a37b02006-10-11 19:04:22 +0800131
132 return 0;
133}
Kumar Galaf7993ed2007-02-17 09:56:49 -0600134device_initcall(mpc836x_declare_of_platform_devices);
Li Yangf5a37b02006-10-11 19:04:22 +0800135
Kumar Gala322d05a2007-02-17 10:13:56 -0600136static void __init mpc836x_mds_init_IRQ(void)
Li Yangbc141de2006-10-03 23:17:51 -0500137{
Li Yangbc141de2006-10-03 23:17:51 -0500138 struct device_node *np;
139
140 np = of_find_node_by_type(NULL, "ipic");
141 if (!np)
142 return;
143
144 ipic_init(np, 0);
145
146 /* Initialize the default interrupt mapping priorities,
147 * in case the boot rom changed something on us.
148 */
149 ipic_set_default_priority();
150 of_node_put(np);
151
152#ifdef CONFIG_QUICC_ENGINE
153 np = of_find_node_by_type(NULL, "qeic");
154 if (!np)
155 return;
156
157 qe_ic_init(np, 0);
158 of_node_put(np);
159#endif /* CONFIG_QUICC_ENGINE */
160}
161
162#if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
163extern ulong ds1374_get_rtc_time(void);
164extern int ds1374_set_rtc_time(ulong);
165
166static int __init mpc8360_rtc_hookup(void)
167{
168 struct timespec tv;
169
Kumar Gala322d05a2007-02-17 10:13:56 -0600170 if (!machine_is(mpc836x_mds))
Kumar Gala336c3c22007-02-17 09:10:44 -0600171 return 0;
172
Li Yangbc141de2006-10-03 23:17:51 -0500173 ppc_md.get_rtc_time = ds1374_get_rtc_time;
174 ppc_md.set_rtc_time = ds1374_set_rtc_time;
175
176 tv.tv_nsec = 0;
177 tv.tv_sec = (ppc_md.get_rtc_time) ();
178 do_settimeofday(&tv);
179
180 return 0;
181}
182
183late_initcall(mpc8360_rtc_hookup);
184#endif
185
186/*
187 * Called very early, MMU is off, device-tree isn't unflattened
188 */
Kumar Gala322d05a2007-02-17 10:13:56 -0600189static int __init mpc836x_mds_probe(void)
Li Yangbc141de2006-10-03 23:17:51 -0500190{
Kumar Gala336c3c22007-02-17 09:10:44 -0600191 unsigned long root = of_get_flat_dt_root();
Li Yangbc141de2006-10-03 23:17:51 -0500192
Kumar Gala336c3c22007-02-17 09:10:44 -0600193 return of_flat_dt_is_compatible(root, "MPC836xMDS");
Li Yangbc141de2006-10-03 23:17:51 -0500194}
195
Kumar Gala322d05a2007-02-17 10:13:56 -0600196define_machine(mpc836x_mds) {
197 .name = "MPC836x MDS",
198 .probe = mpc836x_mds_probe,
199 .setup_arch = mpc836x_mds_setup_arch,
200 .init_IRQ = mpc836x_mds_init_IRQ,
201 .get_irq = ipic_get_irq,
202 .restart = mpc83xx_restart,
203 .time_init = mpc83xx_time_init,
Li Yangbc141de2006-10-03 23:17:51 -0500204 .calibrate_decr = generic_calibrate_decr,
Kumar Gala322d05a2007-02-17 10:13:56 -0600205 .progress = udbg_progress,
Li Yangbc141de2006-10-03 23:17:51 -0500206};