powerpc: Get 64-bit configs to compile with ARCH=powerpc
[linux-2.6.git] / arch / ppc64 / kernel / maple_setup.c
1 /*
2  *  arch/ppc64/kernel/maple_setup.c
3  *
4  *  (c) Copyright 2004 Benjamin Herrenschmidt (benh@kernel.crashing.org),
5  *                     IBM Corp. 
6  *
7  *  This program is free software; you can redistribute it and/or
8  *  modify it under the terms of the GNU General Public License
9  *  as published by the Free Software Foundation; either version
10  *  2 of the License, or (at your option) any later version.
11  *
12  */
13
14 #define DEBUG
15
16 #include <linux/config.h>
17 #include <linux/init.h>
18 #include <linux/errno.h>
19 #include <linux/sched.h>
20 #include <linux/kernel.h>
21 #include <linux/mm.h>
22 #include <linux/stddef.h>
23 #include <linux/unistd.h>
24 #include <linux/ptrace.h>
25 #include <linux/slab.h>
26 #include <linux/user.h>
27 #include <linux/a.out.h>
28 #include <linux/tty.h>
29 #include <linux/string.h>
30 #include <linux/delay.h>
31 #include <linux/ioport.h>
32 #include <linux/major.h>
33 #include <linux/initrd.h>
34 #include <linux/vt_kern.h>
35 #include <linux/console.h>
36 #include <linux/ide.h>
37 #include <linux/pci.h>
38 #include <linux/adb.h>
39 #include <linux/cuda.h>
40 #include <linux/pmu.h>
41 #include <linux/irq.h>
42 #include <linux/seq_file.h>
43 #include <linux/root_dev.h>
44 #include <linux/serial.h>
45 #include <linux/smp.h>
46
47 #include <asm/processor.h>
48 #include <asm/sections.h>
49 #include <asm/prom.h>
50 #include <asm/system.h>
51 #include <asm/pgtable.h>
52 #include <asm/bitops.h>
53 #include <asm/io.h>
54 #include <asm/pci-bridge.h>
55 #include <asm/iommu.h>
56 #include <asm/machdep.h>
57 #include <asm/dma.h>
58 #include <asm/cputable.h>
59 #include <asm/time.h>
60 #include <asm/of_device.h>
61 #include <asm/lmb.h>
62 #include <asm/mpic.h>
63 #include <asm/udbg.h>
64
65 #ifdef DEBUG
66 #define DBG(fmt...) udbg_printf(fmt)
67 #else
68 #define DBG(fmt...)
69 #endif
70
71 extern int maple_set_rtc_time(struct rtc_time *tm);
72 extern void maple_get_rtc_time(struct rtc_time *tm);
73 extern void maple_get_boot_time(struct rtc_time *tm);
74 extern void maple_calibrate_decr(void);
75 extern void maple_pci_init(void);
76 extern void maple_pcibios_fixup(void);
77 extern int maple_pci_get_legacy_ide_irq(struct pci_dev *dev, int channel);
78 extern void generic_find_legacy_serial_ports(u64 *physport,
79                 unsigned int *default_speed);
80
81 static void maple_restart(char *cmd)
82 {
83         unsigned int maple_nvram_base;
84         unsigned int maple_nvram_offset;
85         unsigned int maple_nvram_command;
86         struct device_node *rtcs;
87
88         /* find NVRAM device */
89         rtcs = find_compatible_devices("nvram", "AMD8111");
90         if (rtcs && rtcs->addrs) {
91                 maple_nvram_base = rtcs->addrs[0].address;
92         } else {
93                 printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
94                 printk(KERN_EMERG "Maple: Manual Restart Required\n");
95                 return;
96         }
97
98         /* find service processor device */
99         rtcs = find_devices("service-processor");
100         if (!rtcs) {
101                 printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
102                 printk(KERN_EMERG "Maple: Manual Restart Required\n");
103                 return;
104         }
105         maple_nvram_offset = *(unsigned int*) get_property(rtcs,
106                         "restart-addr", NULL);
107         maple_nvram_command = *(unsigned int*) get_property(rtcs,
108                         "restart-value", NULL);
109
110         /* send command */
111         outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
112         for (;;) ;
113 }
114
115 static void maple_power_off(void)
116 {
117         unsigned int maple_nvram_base;
118         unsigned int maple_nvram_offset;
119         unsigned int maple_nvram_command;
120         struct device_node *rtcs;
121
122         /* find NVRAM device */
123         rtcs = find_compatible_devices("nvram", "AMD8111");
124         if (rtcs && rtcs->addrs) {
125                 maple_nvram_base = rtcs->addrs[0].address;
126         } else {
127                 printk(KERN_EMERG "Maple: Unable to find NVRAM\n");
128                 printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
129                 return;
130         }
131
132         /* find service processor device */
133         rtcs = find_devices("service-processor");
134         if (!rtcs) {
135                 printk(KERN_EMERG "Maple: Unable to find Service Processor\n");
136                 printk(KERN_EMERG "Maple: Manual Power-Down Required\n");
137                 return;
138         }
139         maple_nvram_offset = *(unsigned int*) get_property(rtcs,
140                         "power-off-addr", NULL);
141         maple_nvram_command = *(unsigned int*) get_property(rtcs,
142                         "power-off-value", NULL);
143
144         /* send command */
145         outb_p(maple_nvram_command, maple_nvram_base + maple_nvram_offset);
146         for (;;) ;
147 }
148
149 static void maple_halt(void)
150 {
151         maple_power_off();
152 }
153
154 #ifdef CONFIG_SMP
155 struct smp_ops_t maple_smp_ops = {
156         .probe          = smp_mpic_probe,
157         .message_pass   = smp_mpic_message_pass,
158         .kick_cpu       = smp_generic_kick_cpu,
159         .setup_cpu      = smp_mpic_setup_cpu,
160         .give_timebase  = smp_generic_give_timebase,
161         .take_timebase  = smp_generic_take_timebase,
162 };
163 #endif /* CONFIG_SMP */
164
165 void __init maple_setup_arch(void)
166 {
167         /* init to some ~sane value until calibrate_delay() runs */
168         loops_per_jiffy = 50000000;
169
170         /* Setup SMP callback */
171 #ifdef CONFIG_SMP
172         smp_ops = &maple_smp_ops;
173 #endif
174         /* Lookup PCI hosts */
175         maple_pci_init();
176
177 #ifdef CONFIG_DUMMY_CONSOLE
178         conswitchp = &dummy_con;
179 #endif
180
181         printk(KERN_INFO "Using native/NAP idle loop\n");
182 }
183
184 /* 
185  * Early initialization.
186  */
187 static void __init maple_init_early(void)
188 {
189         unsigned int default_speed;
190         u64 physport;
191
192         DBG(" -> maple_init_early\n");
193
194         /* Initialize hash table, from now on, we can take hash faults
195          * and call ioremap
196          */
197         hpte_init_native();
198
199         /* Find the serial port */
200         generic_find_legacy_serial_ports(&physport, &default_speed);
201
202         DBG("phys port addr: %lx\n", (long)physport);
203
204         if (physport) {
205                 void *comport;
206                 /* Map the uart for udbg. */
207                 comport = (void *)ioremap(physport, 16);
208                 udbg_init_uart(comport, default_speed);
209
210                 DBG("Hello World !\n");
211         }
212
213         /* Setup interrupt mapping options */
214         ppc64_interrupt_controller = IC_OPEN_PIC;
215
216         iommu_init_early_u3();
217
218         DBG(" <- maple_init_early\n");
219 }
220
221
222 static __init void maple_init_IRQ(void)
223 {
224         struct device_node *root;
225         unsigned int *opprop;
226         unsigned long opic_addr;
227         struct mpic *mpic;
228         unsigned char senses[128];
229         int n;
230
231         DBG(" -> maple_init_IRQ\n");
232
233         /* XXX: Non standard, replace that with a proper openpic/mpic node
234          * in the device-tree. Find the Open PIC if present */
235         root = of_find_node_by_path("/");
236         opprop = (unsigned int *) get_property(root,
237                                 "platform-open-pic", NULL);
238         if (opprop == 0)
239                 panic("OpenPIC not found !\n");
240
241         n = prom_n_addr_cells(root);
242         for (opic_addr = 0; n > 0; --n)
243                 opic_addr = (opic_addr << 32) + *opprop++;
244         of_node_put(root);
245
246         /* Obtain sense values from device-tree */
247         prom_get_irq_senses(senses, 0, 128);
248
249         mpic = mpic_alloc(opic_addr,
250                           MPIC_PRIMARY | MPIC_BIG_ENDIAN |
251                           MPIC_BROKEN_U3 | MPIC_WANTS_RESET,
252                           0, 0, 128, 128, senses, 128, "U3-MPIC");
253         BUG_ON(mpic == NULL);
254         mpic_init(mpic);
255
256         DBG(" <- maple_init_IRQ\n");
257 }
258
259 static void __init maple_progress(char *s, unsigned short hex)
260 {
261         printk("*** %04x : %s\n", hex, s ? s : "");
262 }
263
264
265 /*
266  * Called very early, MMU is off, device-tree isn't unflattened
267  */
268 static int __init maple_probe(int platform)
269 {
270         if (platform != PLATFORM_MAPLE)
271                 return 0;
272         /*
273          * On U3, the DART (iommu) must be allocated now since it
274          * has an impact on htab_initialize (due to the large page it
275          * occupies having to be broken up so the DART itself is not
276          * part of the cacheable linar mapping
277          */
278         alloc_u3_dart_table();
279
280         return 1;
281 }
282
283 struct machdep_calls __initdata maple_md = {
284         .probe                  = maple_probe,
285         .setup_arch             = maple_setup_arch,
286         .init_early             = maple_init_early,
287         .init_IRQ               = maple_init_IRQ,
288         .get_irq                = mpic_get_irq,
289         .pcibios_fixup          = maple_pcibios_fixup,
290         .pci_get_legacy_ide_irq = maple_pci_get_legacy_ide_irq,
291         .restart                = maple_restart,
292         .power_off              = maple_power_off,
293         .halt                   = maple_halt,
294         .get_boot_time          = maple_get_boot_time,
295         .set_rtc_time           = maple_set_rtc_time,
296         .get_rtc_time           = maple_get_rtc_time,
297         .calibrate_decr         = generic_calibrate_decr,
298         .progress               = maple_progress,
299         .idle_loop              = native_idle,
300 };