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 if (!of_machine_is_compatible("sony,ps3")) 268 return 0; 269 270 ps3_os_area_save_params(); 271 272 pm_power_off = ps3_power_off; 273 274 DBG(" <- %s:%d\n", __func__, __LINE__); 275 return 1; 276 } 277 278 #if defined(CONFIG_KEXEC_CORE) 279 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 280 { 281 int cpu = smp_processor_id(); 282 283 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu); 284 285 ps3_smp_cleanup_cpu(cpu); 286 ps3_shutdown_IRQ(cpu); 287 288 DBG(" <- %s:%d\n", __func__, __LINE__); 289 } 290 #endif 291 292 define_machine(ps3) { 293 .name = "PS3", 294 .probe = ps3_probe, 295 .setup_arch = ps3_setup_arch, 296 .init_IRQ = ps3_init_IRQ, 297 .panic = ps3_panic, 298 .get_boot_time = ps3_get_boot_time, 299 .set_dabr = ps3_set_dabr, 300 .calibrate_decr = ps3_calibrate_decr, 301 .progress = ps3_progress, 302 .restart = ps3_restart, 303 .halt = ps3_halt, 304 #if defined(CONFIG_KEXEC_CORE) 305 .kexec_cpu_down = ps3_kexec_cpu_down, 306 #endif 307 }; 308