1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * PS3 platform setup routines.
4 *
5 * Copyright (C) 2006 Sony Computer Entertainment Inc.
6 * Copyright 2006 Sony Corp.
7 */
8
9 #include <linux/kernel.h>
10 #include <linux/delay.h>
11 #include <linux/fs.h>
12 #include <linux/root_dev.h>
13 #include <linux/console.h>
14 #include <linux/export.h>
15 #include <linux/memblock.h>
16 #include <linux/of.h>
17
18 #include <asm/machdep.h>
19 #include <asm/firmware.h>
20 #include <asm/time.h>
21 #include <asm/iommu.h>
22 #include <asm/udbg.h>
23 #include <asm/lv1call.h>
24 #include <asm/ps3gpu.h>
25
26 #include "platform.h"
27
28 #if defined(DEBUG)
29 #define DBG udbg_printf
30 #else
31 #define DBG pr_debug
32 #endif
33
34 /* mutex synchronizing GPU accesses and video mode changes */
35 DEFINE_MUTEX(ps3_gpu_mutex);
36 EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
37
38 static union ps3_firmware_version ps3_firmware_version;
39 static char ps3_firmware_version_str[16];
40
41 void ps3_get_firmware_version(union ps3_firmware_version *v)
42 {
43 *v = ps3_firmware_version;
44 }
45 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
46
47 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
48 {
49 union ps3_firmware_version x;
50
51 x.pad = 0;
52 x.major = major;
53 x.minor = minor;
54 x.rev = rev;
55
56 return (ps3_firmware_version.raw > x.raw) -
57 (ps3_firmware_version.raw < x.raw);
58 }
59 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
60
61 static void ps3_power_save(void)
62 {
63 /*
64 * lv1_pause() puts the PPE thread into inactive state until an
65 * irq on an unmasked plug exists. MSR[EE] has no effect.
66 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
67 */
68
69 lv1_pause(0);
70 }
71
72 static void __noreturn ps3_restart(char *cmd)
73 {
74 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
75
76 smp_send_stop();
77 ps3_sys_manager_restart(); /* never returns */
78 }
79
80 static void ps3_power_off(void)
81 {
82 DBG("%s:%d\n", __func__, __LINE__);
83
84 smp_send_stop();
85 ps3_sys_manager_power_off(); /* never returns */
86 }
87
88 static void __noreturn ps3_halt(void)
89 {
90 DBG("%s:%d\n", __func__, __LINE__);
91
92 smp_send_stop();
93 ps3_sys_manager_halt(); /* never returns */
94 }
95
96 static void ps3_panic(char *str)
97 {
98 DBG("%s:%d %s\n", __func__, __LINE__, str);
99
100 smp_send_stop();
101 printk("\n");
102 printk(" System does not reboot automatically.\n");
103 printk(" Please press POWER button.\n");
104 printk("\n");
105 panic_flush_kmsg_end();
106
107 while(1)
108 lv1_pause(1);
109 }
110
111 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
112 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
113 static void __init prealloc(struct ps3_prealloc *p)
114 {
115 if (!p->size)
116 return;
117
118 p->address = memblock_alloc(p->size, p->align);
119 if (!p->address)
120 panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
121 __func__, p->size, p->align);
122
123 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
124 p->address);
125 }
126 #endif
127
128 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
129 struct ps3_prealloc ps3fb_videomemory = {
130 .name = "ps3fb videomemory",
131 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
132 .align = 1024*1024 /* the GPU requires 1 MiB alignment */
133 };
134 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
135 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
136
137 static int __init early_parse_ps3fb(char *p)
138 {
139 if (!p)
140 return 1;
141
142 ps3fb_videomemory.size = ALIGN(memparse(p, &p),
143 ps3fb_videomemory.align);
144 return 0;
145 }
146 early_param("ps3fb", early_parse_ps3fb);
147 #else
148 #define prealloc_ps3fb_videomemory() do { } while (0)
149 #endif
150
151 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
152 struct ps3_prealloc ps3flash_bounce_buffer = {
153 .name = "ps3flash bounce buffer",
154 .size = 256*1024,
155 .align = 256*1024
156 };
157 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
158 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)
159
160 static int __init early_parse_ps3flash(char *p)
161 {
162 if (!p)
163 return 1;
164
165 if (!strcmp(p, "off"))
166 ps3flash_bounce_buffer.size = 0;
167
168 return 0;
169 }
170 early_param("ps3flash", early_parse_ps3flash);
171 #else
172 #define prealloc_ps3flash_bounce_buffer() do { } while (0)
173 #endif
174
175 static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx)
176 {
177 /* Have to set at least one bit in the DABRX */
178 if (dabrx == 0 && dabr == 0)
179 dabrx = DABRX_USER;
180 /* hypervisor only allows us to set BTI, Kernel and user */
181 dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER;
182
183 return lv1_set_dabr(dabr, dabrx) ? -1 : 0;
184 }
185
186 static ssize_t ps3_fw_version_show(struct kobject *kobj,
187 struct kobj_attribute *attr, char *buf)
188 {
189 return sprintf(buf, "%s", ps3_firmware_version_str);
190 }
191
192 static int __init ps3_setup_sysfs(void)
193 {
194 static struct kobj_attribute attr = __ATTR(fw-version, S_IRUGO,
195 ps3_fw_version_show, NULL);
196 static struct kobject *kobj;
197 int result;
198
199 kobj = kobject_create_and_add("ps3", firmware_kobj);
200
201 if (!kobj) {
202 pr_warn("%s:%d: kobject_create_and_add failed.\n", __func__,
203 __LINE__);
204 return -ENOMEM;
205 }
206
207 result = sysfs_create_file(kobj, &attr.attr);
208
209 if (result) {
210 pr_warn("%s:%d: sysfs_create_file failed.\n", __func__,
211 __LINE__);
212 kobject_put(kobj);
213 return -ENOMEM;
214 }
215
216 return 0;
217 }
218 core_initcall(ps3_setup_sysfs);
219
220 static void __init ps3_setup_arch(void)
221 {
222 u64 tmp;
223
224 DBG(" -> %s:%d\n", __func__, __LINE__);
225
226 lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
227
228 snprintf(ps3_firmware_version_str, sizeof(ps3_firmware_version_str),
229 "%u.%u.%u", ps3_firmware_version.major,
230 ps3_firmware_version.minor, ps3_firmware_version.rev);
231
232 printk(KERN_INFO "PS3 firmware version %s\n", ps3_firmware_version_str);
233
234 ps3_spu_set_platform();
235
236 #ifdef CONFIG_SMP
237 smp_init_ps3();
238 #endif
239
240 prealloc_ps3fb_videomemory();
241 prealloc_ps3flash_bounce_buffer();
242
243 ppc_md.power_save = ps3_power_save;
244 ps3_os_area_init();
245
246 DBG(" <- %s:%d\n", __func__, __LINE__);
247 }
248
249 static void __init ps3_progress(char *s, unsigned short hex)
250 {
251 printk("*** %04x : %s\n", hex, s ? s : "");
252 }
253
254 void __init ps3_early_mm_init(void)
255 {
256 unsigned long htab_size;
257
258 ps3_mm_init();
259 ps3_mm_vas_create(&htab_size);
260 ps3_hpte_init(htab_size);
261 }
262
263 static int __init ps3_probe(void)
264 {
265 DBG(" -> %s:%d\n", __func__, __LINE__);
266
267 ps3_os_area_save_params();
268
269 pm_power_off = ps3_power_off;
270
271 DBG(" <- %s:%d\n", __func__, __LINE__);
272 return 1;
273 }
274
275 #if defined(CONFIG_KEXEC_CORE)
276 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
277 {
278 int cpu = smp_processor_id();
279
280 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
281
282 ps3_smp_cleanup_cpu(cpu);
283 ps3_shutdown_IRQ(cpu);
284
285 DBG(" <- %s:%d\n", __func__, __LINE__);
286 }
287 #endif
288
289 define_machine(ps3) {
290 .name = "PS3",
291 .compatible = "sony,ps3",
292 .probe = ps3_probe,
293 .setup_arch = ps3_setup_arch,
294 .init_IRQ = ps3_init_IRQ,
295 .panic = ps3_panic,
296 .get_boot_time = ps3_get_boot_time,
297 .set_dabr = ps3_set_dabr,
298 .calibrate_decr = ps3_calibrate_decr,
299 .progress = ps3_progress,
300 .restart = ps3_restart,
301 .halt = ps3_halt,
302 #if defined(CONFIG_KEXEC_CORE)
303 .kexec_cpu_down = ps3_kexec_cpu_down,
304 #endif
305 };
306
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