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/sysfs.h> 14 #include <linux/console.h> 15 #include <linux/export.h> 16 #include <linux/memblock.h> 17 #include <linux/of.h> 18 19 #include <asm/machdep.h> 20 #include <asm/firmware.h> 21 #include <asm/time.h> 22 #include <asm/iommu.h> 23 #include <asm/udbg.h> 24 #include <asm/lv1call.h> 25 #include <asm/ps3gpu.h> 26 27 #include "platform.h" 28 29 #if defined(DEBUG) 30 #define DBG udbg_printf 31 #else 32 #define DBG pr_debug 33 #endif 34 35 /* mutex synchronizing GPU accesses and video mode changes */ 36 DEFINE_MUTEX(ps3_gpu_mutex); 37 EXPORT_SYMBOL_GPL(ps3_gpu_mutex); 38 39 static union ps3_firmware_version ps3_firmware_version; 40 static char ps3_firmware_version_str[16]; 41 42 void ps3_get_firmware_version(union ps3_firmware_version *v) 43 { 44 *v = ps3_firmware_version; 45 } 46 EXPORT_SYMBOL_GPL(ps3_get_firmware_version); 47 48 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev) 49 { 50 union ps3_firmware_version x; 51 52 x.pad = 0; 53 x.major = major; 54 x.minor = minor; 55 x.rev = rev; 56 57 return (ps3_firmware_version.raw > x.raw) - 58 (ps3_firmware_version.raw < x.raw); 59 } 60 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version); 61 62 static void ps3_power_save(void) 63 { 64 /* 65 * lv1_pause() puts the PPE thread into inactive state until an 66 * irq on an unmasked plug exists. MSR[EE] has no effect. 67 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt. 68 */ 69 70 lv1_pause(0); 71 } 72 73 static void __noreturn ps3_restart(char *cmd) 74 { 75 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd); 76 77 smp_send_stop(); 78 ps3_sys_manager_restart(); /* never returns */ 79 } 80 81 static void ps3_power_off(void) 82 { 83 DBG("%s:%d\n", __func__, __LINE__); 84 85 smp_send_stop(); 86 ps3_sys_manager_power_off(); /* never returns */ 87 } 88 89 static void __noreturn ps3_halt(void) 90 { 91 DBG("%s:%d\n", __func__, __LINE__); 92 93 smp_send_stop(); 94 ps3_sys_manager_halt(); /* 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 panic_flush_kmsg_end(); 107 108 while(1) 109 lv1_pause(1); 110 } 111 112 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \ 113 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 114 static void __init prealloc(struct ps3_prealloc *p) 115 { 116 if (!p->size) 117 return; 118 119 p->address = memblock_alloc_or_panic(p->size, p->align); 120 121 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size, 122 p->address); 123 } 124 #endif 125 126 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) 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 EXPORT_SYMBOL_GPL(ps3fb_videomemory); 133 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory) 134 135 static int __init early_parse_ps3fb(char *p) 136 { 137 if (!p) 138 return 1; 139 140 ps3fb_videomemory.size = ALIGN(memparse(p, &p), 141 ps3fb_videomemory.align); 142 return 0; 143 } 144 early_param("ps3fb", early_parse_ps3fb); 145 #else 146 #define prealloc_ps3fb_videomemory() do { } while (0) 147 #endif 148 149 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 150 struct ps3_prealloc ps3flash_bounce_buffer = { 151 .name = "ps3flash bounce buffer", 152 .size = 256*1024, 153 .align = 256*1024 154 }; 155 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer); 156 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer) 157 158 static int __init early_parse_ps3flash(char *p) 159 { 160 if (!p) 161 return 1; 162 163 if (!strcmp(p, "off")) 164 ps3flash_bounce_buffer.size = 0; 165 166 return 0; 167 } 168 early_param("ps3flash", early_parse_ps3flash); 169 #else 170 #define prealloc_ps3flash_bounce_buffer() do { } while (0) 171 #endif 172 173 static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx) 174 { 175 /* Have to set at least one bit in the DABRX */ 176 if (dabrx == 0 && dabr == 0) 177 dabrx = DABRX_USER; 178 /* hypervisor only allows us to set BTI, Kernel and user */ 179 dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER; 180 181 return lv1_set_dabr(dabr, dabrx) ? -1 : 0; 182 } 183 184 static ssize_t ps3_fw_version_show(struct kobject *kobj, 185 struct kobj_attribute *attr, char *buf) 186 { 187 return sysfs_emit(buf, "%s\n", ps3_firmware_version_str); 188 } 189 190 static int __init ps3_setup_sysfs(void) 191 { 192 static struct kobj_attribute attr = __ATTR(fw-version, S_IRUGO, 193 ps3_fw_version_show, NULL); 194 static struct kobject *kobj; 195 int result; 196 197 kobj = kobject_create_and_add("ps3", firmware_kobj); 198 199 if (!kobj) { 200 pr_warn("%s:%d: kobject_create_and_add failed.\n", __func__, 201 __LINE__); 202 return -ENOMEM; 203 } 204 205 result = sysfs_create_file(kobj, &attr.attr); 206 207 if (result) { 208 pr_warn("%s:%d: sysfs_create_file failed.\n", __func__, 209 __LINE__); 210 kobject_put(kobj); 211 return -ENOMEM; 212 } 213 214 return 0; 215 } 216 core_initcall(ps3_setup_sysfs); 217 218 static void __init ps3_setup_arch(void) 219 { 220 u64 tmp; 221 222 DBG(" -> %s:%d\n", __func__, __LINE__); 223 224 lv1_get_version_info(&ps3_firmware_version.raw, &tmp); 225 226 snprintf(ps3_firmware_version_str, sizeof(ps3_firmware_version_str), 227 "%u.%u.%u", ps3_firmware_version.major, 228 ps3_firmware_version.minor, ps3_firmware_version.rev); 229 230 printk(KERN_INFO "PS3 firmware version %s\n", ps3_firmware_version_str); 231 232 ps3_spu_set_platform(); 233 234 #ifdef CONFIG_SMP 235 smp_init_ps3(); 236 #endif 237 238 prealloc_ps3fb_videomemory(); 239 prealloc_ps3flash_bounce_buffer(); 240 241 ppc_md.power_save = ps3_power_save; 242 ps3_os_area_init(); 243 244 DBG(" <- %s:%d\n", __func__, __LINE__); 245 } 246 247 static void __init ps3_progress(char *s, unsigned short hex) 248 { 249 printk("*** %04x : %s\n", hex, s ? s : ""); 250 } 251 252 void __init ps3_early_mm_init(void) 253 { 254 unsigned long htab_size; 255 256 ps3_mm_init(); 257 ps3_mm_vas_create(&htab_size); 258 ps3_hpte_init(htab_size); 259 } 260 261 static int __init ps3_probe(void) 262 { 263 DBG(" -> %s:%d\n", __func__, __LINE__); 264 265 ps3_os_area_save_params(); 266 267 pm_power_off = ps3_power_off; 268 269 DBG(" <- %s:%d\n", __func__, __LINE__); 270 return 1; 271 } 272 273 #if defined(CONFIG_KEXEC_CORE) 274 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 275 { 276 int cpu = smp_processor_id(); 277 278 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu); 279 280 ps3_smp_cleanup_cpu(cpu); 281 ps3_shutdown_IRQ(cpu); 282 283 DBG(" <- %s:%d\n", __func__, __LINE__); 284 } 285 #endif 286 287 define_machine(ps3) { 288 .name = "PS3", 289 .compatible = "sony,ps3", 290 .probe = ps3_probe, 291 .setup_arch = ps3_setup_arch, 292 .init_IRQ = ps3_init_IRQ, 293 .panic = ps3_panic, 294 .get_boot_time = ps3_get_boot_time, 295 .set_dabr = ps3_set_dabr, 296 .calibrate_decr = ps3_calibrate_decr, 297 .progress = ps3_progress, 298 .restart = ps3_restart, 299 .halt = ps3_halt, 300 #if defined(CONFIG_KEXEC_CORE) 301 .kexec_cpu_down = ps3_kexec_cpu_down, 302 #endif 303 }; 304