Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
[pandora-kernel.git] / arch / powerpc / platforms / 83xx / mpc8360e_pb.c
1 /*
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:
8  * MPC8360E MDS PB board specific routines.
9  *
10  * Changelog:
11  * Jun 21, 2006 Initial version
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/root_dev.h>
31 #include <linux/initrd.h>
32
33 #include <asm/system.h>
34 #include <asm/atomic.h>
35 #include <asm/time.h>
36 #include <asm/io.h>
37 #include <asm/machdep.h>
38 #include <asm/ipic.h>
39 #include <asm/bootinfo.h>
40 #include <asm/irq.h>
41 #include <asm/prom.h>
42 #include <asm/udbg.h>
43 #include <sysdev/fsl_soc.h>
44 #include <asm/qe.h>
45 #include <asm/qe_ic.h>
46
47 #include "mpc83xx.h"
48
49 #undef DEBUG
50 #ifdef DEBUG
51 #define DBG(fmt...) udbg_printf(fmt)
52 #else
53 #define DBG(fmt...)
54 #endif
55
56 #ifndef CONFIG_PCI
57 unsigned long isa_io_base = 0;
58 unsigned long isa_mem_base = 0;
59 #endif
60
61 static u8 *bcsr_regs = NULL;
62
63 u8 *get_bcsr(void)
64 {
65         return bcsr_regs;
66 }
67
68 /* ************************************************************************
69  *
70  * Setup the architecture
71  *
72  */
73 static void __init mpc8360_sys_setup_arch(void)
74 {
75         struct device_node *np;
76
77         if (ppc_md.progress)
78                 ppc_md.progress("mpc8360_sys_setup_arch()", 0);
79
80         np = of_find_node_by_type(NULL, "cpu");
81         if (np != 0) {
82                 const unsigned int *fp =
83                     get_property(np, "clock-frequency", NULL);
84                 if (fp != 0)
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 != 0) {
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         ppc_md.pci_swizzle = common_swizzle;
106         ppc_md.pci_exclude_device = mpc83xx_exclude_device;
107 #endif
108
109 #ifdef CONFIG_QUICC_ENGINE
110         qe_reset();
111
112         if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
113                 par_io_init(np);
114                 of_node_put(np);
115
116                 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
117                         par_io_of_config(np);
118         }
119
120         if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
121                         != NULL){
122                 /* Reset the Ethernet PHY */
123                 bcsr_regs[9] &= ~0x20;
124                 udelay(1000);
125                 bcsr_regs[9] |= 0x20;
126                 iounmap(bcsr_regs);
127                 of_node_put(np);
128         }
129
130 #endif                          /* CONFIG_QUICC_ENGINE */
131
132 #ifdef CONFIG_BLK_DEV_INITRD
133         if (initrd_start)
134                 ROOT_DEV = Root_RAM0;
135         else
136 #endif
137 #ifdef  CONFIG_ROOT_NFS
138                 ROOT_DEV = Root_NFS;
139 #else
140                 ROOT_DEV = Root_HDA1;
141 #endif
142 }
143
144 void __init mpc8360_sys_init_IRQ(void)
145 {
146
147         struct device_node *np;
148
149         np = of_find_node_by_type(NULL, "ipic");
150         if (!np)
151                 return;
152
153         ipic_init(np, 0);
154
155         /* Initialize the default interrupt mapping priorities,
156          * in case the boot rom changed something on us.
157          */
158         ipic_set_default_priority();
159         of_node_put(np);
160
161 #ifdef CONFIG_QUICC_ENGINE
162         np = of_find_node_by_type(NULL, "qeic");
163         if (!np)
164                 return;
165
166         qe_ic_init(np, 0);
167         of_node_put(np);
168 #endif                          /* CONFIG_QUICC_ENGINE */
169 }
170
171 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
172 extern ulong ds1374_get_rtc_time(void);
173 extern int ds1374_set_rtc_time(ulong);
174
175 static int __init mpc8360_rtc_hookup(void)
176 {
177         struct timespec tv;
178
179         ppc_md.get_rtc_time = ds1374_get_rtc_time;
180         ppc_md.set_rtc_time = ds1374_set_rtc_time;
181
182         tv.tv_nsec = 0;
183         tv.tv_sec = (ppc_md.get_rtc_time) ();
184         do_settimeofday(&tv);
185
186         return 0;
187 }
188
189 late_initcall(mpc8360_rtc_hookup);
190 #endif
191
192 /*
193  * Called very early, MMU is off, device-tree isn't unflattened
194  */
195 static int __init mpc8360_sys_probe(void)
196 {
197         char *model = of_get_flat_dt_prop(of_get_flat_dt_root(),
198                                           "model", NULL);
199         if (model == NULL)
200                 return 0;
201         if (strcmp(model, "MPC8360EPB"))
202                 return 0;
203
204         DBG("MPC8360EMDS-PB found\n");
205
206         return 1;
207 }
208
209 define_machine(mpc8360_sys) {
210         .name           = "MPC8360E PB",
211         .probe          = mpc8360_sys_probe,
212         .setup_arch     = mpc8360_sys_setup_arch,
213         .init_IRQ       = mpc8360_sys_init_IRQ,
214         .get_irq        = ipic_get_irq,
215         .restart        = mpc83xx_restart,
216         .time_init      = mpc83xx_time_init,
217         .calibrate_decr = generic_calibrate_decr,
218         .progress       = udbg_progress,
219 };