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_or_panic(p->size, p->align); 119 120 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size, 121 p->address); 122 } 123 #endif 124 125 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) 126 struct ps3_prealloc ps3fb_videomemory = { 127 .name = "ps3fb videomemory", 128 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024, 129 .align = 1024*1024 /* the GPU requires 1 MiB alignment */ 130 }; 131 EXPORT_SYMBOL_GPL(ps3fb_videomemory); 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(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 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 149 struct ps3_prealloc ps3flash_bounce_buffer = { 150 .name = "ps3flash bounce buffer", 151 .size = 256*1024, 152 .align = 256*1024 153 }; 154 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer); 155 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer) 156 157 static int __init early_parse_ps3flash(char *p) 158 { 159 if (!p) 160 return 1; 161 162 if (!strcmp(p, "off")) 163 ps3flash_bounce_buffer.size = 0; 164 165 return 0; 166 } 167 early_param("ps3flash", early_parse_ps3flash); 168 #else 169 #define prealloc_ps3flash_bounce_buffer() do { } while (0) 170 #endif 171 172 static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx) 173 { 174 /* Have to set at least one bit in the DABRX */ 175 if (dabrx == 0 && dabr == 0) 176 dabrx = DABRX_USER; 177 /* hypervisor only allows us to set BTI, Kernel and user */ 178 dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER; 179 180 return lv1_set_dabr(dabr, dabrx) ? -1 : 0; 181 } 182 183 static ssize_t ps3_fw_version_show(struct kobject *kobj, 184 struct kobj_attribute *attr, char *buf) 185 { 186 return sprintf(buf, "%s", ps3_firmware_version_str); 187 } 188 189 static int __init ps3_setup_sysfs(void) 190 { 191 static struct kobj_attribute attr = __ATTR(fw-version, S_IRUGO, 192 ps3_fw_version_show, NULL); 193 static struct kobject *kobj; 194 int result; 195 196 kobj = kobject_create_and_add("ps3", firmware_kobj); 197 198 if (!kobj) { 199 pr_warn("%s:%d: kobject_create_and_add failed.\n", __func__, 200 __LINE__); 201 return -ENOMEM; 202 } 203 204 result = sysfs_create_file(kobj, &attr.attr); 205 206 if (result) { 207 pr_warn("%s:%d: sysfs_create_file failed.\n", __func__, 208 __LINE__); 209 kobject_put(kobj); 210 return -ENOMEM; 211 } 212 213 return 0; 214 } 215 core_initcall(ps3_setup_sysfs); 216 217 static void __init ps3_setup_arch(void) 218 { 219 u64 tmp; 220 221 DBG(" -> %s:%d\n", __func__, __LINE__); 222 223 lv1_get_version_info(&ps3_firmware_version.raw, &tmp); 224 225 snprintf(ps3_firmware_version_str, sizeof(ps3_firmware_version_str), 226 "%u.%u.%u", ps3_firmware_version.major, 227 ps3_firmware_version.minor, ps3_firmware_version.rev); 228 229 printk(KERN_INFO "PS3 firmware version %s\n", ps3_firmware_version_str); 230 231 ps3_spu_set_platform(); 232 233 #ifdef CONFIG_SMP 234 smp_init_ps3(); 235 #endif 236 237 prealloc_ps3fb_videomemory(); 238 prealloc_ps3flash_bounce_buffer(); 239 240 ppc_md.power_save = ps3_power_save; 241 ps3_os_area_init(); 242 243 DBG(" <- %s:%d\n", __func__, __LINE__); 244 } 245 246 static void __init ps3_progress(char *s, unsigned short hex) 247 { 248 printk("*** %04x : %s\n", hex, s ? s : ""); 249 } 250 251 void __init ps3_early_mm_init(void) 252 { 253 unsigned long htab_size; 254 255 ps3_mm_init(); 256 ps3_mm_vas_create(&htab_size); 257 ps3_hpte_init(htab_size); 258 } 259 260 static int __init ps3_probe(void) 261 { 262 DBG(" -> %s:%d\n", __func__, __LINE__); 263 264 ps3_os_area_save_params(); 265 266 pm_power_off = ps3_power_off; 267 268 DBG(" <- %s:%d\n", __func__, __LINE__); 269 return 1; 270 } 271 272 #if defined(CONFIG_KEXEC_CORE) 273 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 274 { 275 int cpu = smp_processor_id(); 276 277 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu); 278 279 ps3_smp_cleanup_cpu(cpu); 280 ps3_shutdown_IRQ(cpu); 281 282 DBG(" <- %s:%d\n", __func__, __LINE__); 283 } 284 #endif 285 286 define_machine(ps3) { 287 .name = "PS3", 288 .compatible = "sony,ps3", 289 .probe = ps3_probe, 290 .setup_arch = ps3_setup_arch, 291 .init_IRQ = ps3_init_IRQ, 292 .panic = ps3_panic, 293 .get_boot_time = ps3_get_boot_time, 294 .set_dabr = ps3_set_dabr, 295 .calibrate_decr = ps3_calibrate_decr, 296 .progress = ps3_progress, 297 .restart = ps3_restart, 298 .halt = ps3_halt, 299 #if defined(CONFIG_KEXEC_CORE) 300 .kexec_cpu_down = ps3_kexec_cpu_down, 301 #endif 302 }; 303