Merge /pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / arch / powerpc / platforms / 85xx / mpc85xx_mds.c
1 /*
2  * Copyright (C) Freescale Semicondutor, Inc. 2006-2007. All rights reserved.
3  *
4  * Author: Andy Fleming <afleming@freescale.com>
5  *
6  * Based on 83xx/mpc8360e_pb.c by:
7  *         Li Yang <LeoLi@freescale.com>
8  *         Yin Olivia <Hong-hua.Yin@freescale.com>
9  *
10  * Description:
11  * MPC85xx MDS board specific routines.
12  *
13  * This program is free software; you can redistribute  it and/or modify it
14  * 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/initrd.h>
31 #include <linux/module.h>
32 #include <linux/fsl_devices.h>
33
34 #include <asm/of_device.h>
35 #include <asm/of_platform.h>
36 #include <asm/system.h>
37 #include <asm/atomic.h>
38 #include <asm/time.h>
39 #include <asm/io.h>
40 #include <asm/machdep.h>
41 #include <asm/bootinfo.h>
42 #include <asm/pci-bridge.h>
43 #include <asm/mpc85xx.h>
44 #include <asm/irq.h>
45 #include <mm/mmu_decl.h>
46 #include <asm/prom.h>
47 #include <asm/udbg.h>
48 #include <sysdev/fsl_soc.h>
49 #include <asm/qe.h>
50 #include <asm/qe_ic.h>
51 #include <asm/mpic.h>
52
53 #include "mpc85xx.h"
54
55 #undef DEBUG
56 #ifdef DEBUG
57 #define DBG(fmt...) udbg_printf(fmt)
58 #else
59 #define DBG(fmt...)
60 #endif
61
62 #ifndef CONFIG_PCI
63 unsigned long isa_io_base = 0;
64 unsigned long isa_mem_base = 0;
65 #endif
66
67 /* ************************************************************************
68  *
69  * Setup the architecture
70  *
71  */
72 static void __init mpc85xx_mds_setup_arch(void)
73 {
74         struct device_node *np;
75         static u8 *bcsr_regs = NULL;
76
77         if (ppc_md.progress)
78                 ppc_md.progress("mpc85xx_mds_setup_arch()", 0);
79
80         np = of_find_node_by_type(NULL, "cpu");
81         if (np != NULL) {
82                 const unsigned int *fp =
83                     of_get_property(np, "clock-frequency", NULL);
84                 if (fp != NULL)
85                         loops_per_jiffy = *fp / HZ;
86                 else
87                         loops_per_jiffy = 50000000 / HZ;
88                 of_node_put(np);
89         }
90
91         /* Map BCSR area */
92         np = of_find_node_by_name(NULL, "bcsr");
93         if (np != NULL) {
94                 struct resource res;
95
96                 of_address_to_resource(np, 0, &res);
97                 bcsr_regs = ioremap(res.start, res.end - res.start +1);
98                 of_node_put(np);
99         }
100
101 #ifdef CONFIG_PCI
102         for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) {
103                 add_bridge(np);
104         }
105         of_node_put(np);
106 #endif
107
108 #ifdef CONFIG_QUICC_ENGINE
109         if ((np = of_find_node_by_name(NULL, "qe")) != NULL) {
110                 qe_reset();
111                 of_node_put(np);
112         }
113
114         if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
115                 struct device_node *ucc = NULL;
116
117                 par_io_init(np);
118                 of_node_put(np);
119
120                 for ( ;(ucc = of_find_node_by_name(ucc, "ucc")) != NULL;)
121                         par_io_of_config(ucc);
122
123                 of_node_put(ucc);
124         }
125
126         if (bcsr_regs) {
127                 u8 bcsr_phy;
128
129                 /* Reset the Ethernet PHY */
130                 bcsr_phy = in_be8(&bcsr_regs[9]);
131                 bcsr_phy &= ~0x20;
132                 out_be8(&bcsr_regs[9], bcsr_phy);
133
134                 udelay(1000);
135
136                 bcsr_phy = in_be8(&bcsr_regs[9]);
137                 bcsr_phy |= 0x20;
138                 out_be8(&bcsr_regs[9], bcsr_phy);
139
140                 iounmap(bcsr_regs);
141         }
142
143 #endif  /* CONFIG_QUICC_ENGINE */
144 }
145
146 static struct of_device_id mpc85xx_ids[] = {
147         { .type = "soc", },
148         { .compatible = "soc", },
149         { .type = "qe", },
150         {},
151 };
152
153 static int __init mpc85xx_publish_devices(void)
154 {
155         if (!machine_is(mpc85xx_mds))
156                 return 0;
157
158         /* Publish the QE devices */
159         of_platform_bus_probe(NULL,mpc85xx_ids,NULL);
160
161         return 0;
162 }
163 device_initcall(mpc85xx_publish_devices);
164
165 static void __init mpc85xx_mds_pic_init(void)
166 {
167         struct mpic *mpic;
168         struct resource r;
169         struct device_node *np = NULL;
170
171         np = of_find_node_by_type(NULL, "open-pic");
172         if (!np)
173                 return;
174
175         if (of_address_to_resource(np, 0, &r)) {
176                 printk(KERN_ERR "Failed to map mpic register space\n");
177                 of_node_put(np);
178                 return;
179         }
180
181         mpic = mpic_alloc(np, r.start,
182                         MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
183                         4, 0, " OpenPIC  ");
184         BUG_ON(mpic == NULL);
185         of_node_put(np);
186
187         /* Internal Interrupts */
188         mpic_assign_isu(mpic, 0, r.start + 0x10200);
189         mpic_assign_isu(mpic, 1, r.start + 0x10280);
190         mpic_assign_isu(mpic, 2, r.start + 0x10300);
191         mpic_assign_isu(mpic, 3, r.start + 0x10380);
192         mpic_assign_isu(mpic, 4, r.start + 0x10400);
193         mpic_assign_isu(mpic, 5, r.start + 0x10480);
194         mpic_assign_isu(mpic, 6, r.start + 0x10500);
195         mpic_assign_isu(mpic, 7, r.start + 0x10580);
196         mpic_assign_isu(mpic, 8, r.start + 0x10600);
197         mpic_assign_isu(mpic, 9, r.start + 0x10680);
198         mpic_assign_isu(mpic, 10, r.start + 0x10700);
199         mpic_assign_isu(mpic, 11, r.start + 0x10780);
200
201         /* External Interrupts */
202         mpic_assign_isu(mpic, 12, r.start + 0x10000);
203         mpic_assign_isu(mpic, 13, r.start + 0x10080);
204         mpic_assign_isu(mpic, 14, r.start + 0x10100);
205
206         mpic_init(mpic);
207
208 #ifdef CONFIG_QUICC_ENGINE
209         np = of_find_node_by_type(NULL, "qeic");
210         if (!np)
211                 return;
212
213         qe_ic_init(np, 0);
214         of_node_put(np);
215 #endif                          /* CONFIG_QUICC_ENGINE */
216 }
217
218 static int __init mpc85xx_mds_probe(void)
219 {
220         unsigned long root = of_get_flat_dt_root();
221
222         return of_flat_dt_is_compatible(root, "MPC85xxMDS");
223 }
224
225 define_machine(mpc85xx_mds) {
226         .name           = "MPC85xx MDS",
227         .probe          = mpc85xx_mds_probe,
228         .setup_arch     = mpc85xx_mds_setup_arch,
229         .init_IRQ       = mpc85xx_mds_pic_init,
230         .get_irq        = mpic_get_irq,
231         .restart        = mpc85xx_restart,
232         .calibrate_decr = generic_calibrate_decr,
233         .progress       = udbg_progress,
234 };