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[POWERPC] PS3: Compare firmware version
[linux-2.6.git] / arch / powerpc / platforms / ps3 / setup.c
1 /*
2  *  PS3 platform setup routines.
3  *
4  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
5  *  Copyright 2006 Sony Corp.
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; version 2 of the License.
10  *
11  *  This program is distributed in the hope that it will be useful,
12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *  GNU General Public License for more details.
15  *
16  *  You should have received a copy of the GNU General Public License
17  *  along with this program; if not, write to the Free Software
18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19  */
20
21 #include <linux/kernel.h>
22 #include <linux/delay.h>
23 #include <linux/fs.h>
24 #include <linux/root_dev.h>
25 #include <linux/console.h>
26 #include <linux/kexec.h>
27 #include <linux/bootmem.h>
28
29 #include <asm/machdep.h>
30 #include <asm/firmware.h>
31 #include <asm/time.h>
32 #include <asm/iommu.h>
33 #include <asm/udbg.h>
34 #include <asm/prom.h>
35 #include <asm/lv1call.h>
36
37 #include "platform.h"
38
39 #if defined(DEBUG)
40 #define DBG(fmt...) udbg_printf(fmt)
41 #else
42 #define DBG(fmt...) do{if(0)printk(fmt);}while(0)
43 #endif
44
45 #if !defined(CONFIG_SMP)
46 static void smp_send_stop(void) {}
47 #endif
48
49 static union ps3_firmware_version ps3_firmware_version;
50
51 void ps3_get_firmware_version(union ps3_firmware_version *v)
52 {
53         *v = ps3_firmware_version;
54 }
55 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
56
57 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
58 {
59         union ps3_firmware_version x;
60
61         x.pad = 0;
62         x.major = major;
63         x.minor = minor;
64         x.rev = rev;
65
66         return (ps3_firmware_version.raw - x.raw);
67 }
68 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
69
70 static void ps3_power_save(void)
71 {
72         /*
73          * lv1_pause() puts the PPE thread into inactive state until an
74          * irq on an unmasked plug exists. MSR[EE] has no effect.
75          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
76          */
77
78         lv1_pause(0);
79 }
80
81 static void ps3_restart(char *cmd)
82 {
83         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
84
85         smp_send_stop();
86         ps3_sys_manager_restart(); /* never returns */
87 }
88
89 static void ps3_power_off(void)
90 {
91         DBG("%s:%d\n", __func__, __LINE__);
92
93         smp_send_stop();
94         ps3_sys_manager_power_off(); /* never returns */
95 }
96
97 static void ps3_panic(char *str)
98 {
99         DBG("%s:%d %s\n", __func__, __LINE__, str);
100
101         smp_send_stop();
102         printk("\n");
103         printk("   System does not reboot automatically.\n");
104         printk("   Please press POWER button.\n");
105         printk("\n");
106
107         while(1);
108 }
109
110 #ifdef CONFIG_FB_PS3
111 static void prealloc(struct ps3_prealloc *p)
112 {
113         if (!p->size)
114                 return;
115
116         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
117         if (!p->address) {
118                 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
119                        p->name);
120                 return;
121         }
122
123         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
124                p->address);
125 }
126
127 struct ps3_prealloc ps3fb_videomemory = {
128     .name = "ps3fb videomemory",
129     .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
130     .align = 1024*1024                  /* the GPU requires 1 MiB alignment */
131 };
132 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
133
134 static int __init early_parse_ps3fb(char *p)
135 {
136         if (!p)
137                 return 1;
138
139         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
140                                            ps3fb_videomemory.align);
141         return 0;
142 }
143 early_param("ps3fb", early_parse_ps3fb);
144 #else
145 #define prealloc_ps3fb_videomemory()    do { } while (0)
146 #endif
147
148 static int ps3_set_dabr(u64 dabr)
149 {
150         enum {DABR_USER = 1, DABR_KERNEL = 2,};
151
152         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
153 }
154
155 static void __init ps3_setup_arch(void)
156 {
157
158         DBG(" -> %s:%d\n", __func__, __LINE__);
159
160         lv1_get_version_info(&ps3_firmware_version.raw);
161         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
162                ps3_firmware_version.major, ps3_firmware_version.minor,
163                ps3_firmware_version.rev);
164
165         ps3_spu_set_platform();
166         ps3_map_htab();
167
168 #ifdef CONFIG_SMP
169         smp_init_ps3();
170 #endif
171
172 #ifdef CONFIG_DUMMY_CONSOLE
173         conswitchp = &dummy_con;
174 #endif
175
176         prealloc_ps3fb_videomemory();
177         ppc_md.power_save = ps3_power_save;
178
179         DBG(" <- %s:%d\n", __func__, __LINE__);
180 }
181
182 static void __init ps3_progress(char *s, unsigned short hex)
183 {
184         printk("*** %04x : %s\n", hex, s ? s : "");
185 }
186
187 static int __init ps3_probe(void)
188 {
189         unsigned long htab_size;
190         unsigned long dt_root;
191
192         DBG(" -> %s:%d\n", __func__, __LINE__);
193
194         dt_root = of_get_flat_dt_root();
195         if (!of_flat_dt_is_compatible(dt_root, "PS3"))
196                 return 0;
197
198         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
199
200         ps3_os_area_init();
201         ps3_mm_init();
202         ps3_mm_vas_create(&htab_size);
203         ps3_hpte_init(htab_size);
204
205         DBG(" <- %s:%d\n", __func__, __LINE__);
206         return 1;
207 }
208
209 #if defined(CONFIG_KEXEC)
210 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
211 {
212         DBG(" -> %s:%d\n", __func__, __LINE__);
213
214         if (secondary) {
215                 int cpu;
216                 for_each_online_cpu(cpu)
217                         if (cpu)
218                                 ps3_smp_cleanup_cpu(cpu);
219         } else
220                 ps3_smp_cleanup_cpu(0);
221
222         DBG(" <- %s:%d\n", __func__, __LINE__);
223 }
224
225 static void ps3_machine_kexec(struct kimage *image)
226 {
227         unsigned long ppe_id;
228
229         DBG(" -> %s:%d\n", __func__, __LINE__);
230
231         lv1_get_logical_ppe_id(&ppe_id);
232         lv1_configure_irq_state_bitmap(ppe_id, 0, 0);
233         ps3_mm_shutdown();
234         ps3_mm_vas_destroy();
235
236         default_machine_kexec(image);
237
238         DBG(" <- %s:%d\n", __func__, __LINE__);
239 }
240 #endif
241
242 define_machine(ps3) {
243         .name                           = "PS3",
244         .probe                          = ps3_probe,
245         .setup_arch                     = ps3_setup_arch,
246         .init_IRQ                       = ps3_init_IRQ,
247         .panic                          = ps3_panic,
248         .get_boot_time                  = ps3_get_boot_time,
249         .set_rtc_time                   = ps3_set_rtc_time,
250         .get_rtc_time                   = ps3_get_rtc_time,
251         .set_dabr                       = ps3_set_dabr,
252         .calibrate_decr                 = ps3_calibrate_decr,
253         .progress                       = ps3_progress,
254         .restart                        = ps3_restart,
255         .power_off                      = ps3_power_off,
256 #if defined(CONFIG_KEXEC)
257         .kexec_cpu_down                 = ps3_kexec_cpu_down,
258         .machine_kexec                  = ps3_machine_kexec,
259         .machine_kexec_prepare          = default_machine_kexec_prepare,
260         .machine_crash_shutdown         = default_machine_crash_shutdown,
261 #endif
262 };