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/bootmem.h> 27 28 #include <asm/machdep.h> 29 #include <asm/firmware.h> 30 #include <asm/time.h> 31 #include <asm/iommu.h> 32 #include <asm/udbg.h> 33 #include <asm/prom.h> 34 #include <asm/lv1call.h> 35 36 #include "platform.h" 37 38 #if defined(DEBUG) 39 #define DBG udbg_printf 40 #else 41 #define DBG pr_debug 42 #endif 43 44 /* mutex synchronizing GPU accesses and video mode changes */ 45 DEFINE_MUTEX(ps3_gpu_mutex); 46 EXPORT_SYMBOL_GPL(ps3_gpu_mutex); 47 48 #if !defined(CONFIG_SMP) 49 static void smp_send_stop(void) {} 50 #endif 51 52 static union ps3_firmware_version ps3_firmware_version; 53 54 void ps3_get_firmware_version(union ps3_firmware_version *v) 55 { 56 *v = ps3_firmware_version; 57 } 58 EXPORT_SYMBOL_GPL(ps3_get_firmware_version); 59 60 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev) 61 { 62 union ps3_firmware_version x; 63 64 x.pad = 0; 65 x.major = major; 66 x.minor = minor; 67 x.rev = rev; 68 69 return (ps3_firmware_version.raw > x.raw) - 70 (ps3_firmware_version.raw < x.raw); 71 } 72 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version); 73 74 static void ps3_power_save(void) 75 { 76 /* 77 * lv1_pause() puts the PPE thread into inactive state until an 78 * irq on an unmasked plug exists. MSR[EE] has no effect. 79 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt. 80 */ 81 82 lv1_pause(0); 83 } 84 85 static void ps3_restart(char *cmd) 86 { 87 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd); 88 89 smp_send_stop(); 90 ps3_sys_manager_restart(); /* never returns */ 91 } 92 93 static void ps3_power_off(void) 94 { 95 DBG("%s:%d\n", __func__, __LINE__); 96 97 smp_send_stop(); 98 ps3_sys_manager_power_off(); /* never returns */ 99 } 100 101 static void ps3_halt(void) 102 { 103 DBG("%s:%d\n", __func__, __LINE__); 104 105 smp_send_stop(); 106 ps3_sys_manager_halt(); /* never returns */ 107 } 108 109 static void ps3_panic(char *str) 110 { 111 DBG("%s:%d %s\n", __func__, __LINE__, str); 112 113 smp_send_stop(); 114 printk("\n"); 115 printk(" System does not reboot automatically.\n"); 116 printk(" Please press POWER button.\n"); 117 printk("\n"); 118 119 while(1) 120 lv1_pause(1); 121 } 122 123 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \ 124 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 125 static void __init prealloc(struct ps3_prealloc *p) 126 { 127 if (!p->size) 128 return; 129 130 p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS)); 131 if (!p->address) { 132 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__, 133 p->name); 134 return; 135 } 136 137 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size, 138 p->address); 139 } 140 #endif 141 142 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) 143 struct ps3_prealloc ps3fb_videomemory = { 144 .name = "ps3fb videomemory", 145 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024, 146 .align = 1024*1024 /* the GPU requires 1 MiB alignment */ 147 }; 148 EXPORT_SYMBOL_GPL(ps3fb_videomemory); 149 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory) 150 151 static int __init early_parse_ps3fb(char *p) 152 { 153 if (!p) 154 return 1; 155 156 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p), 157 ps3fb_videomemory.align); 158 return 0; 159 } 160 early_param("ps3fb", early_parse_ps3fb); 161 #else 162 #define prealloc_ps3fb_videomemory() do { } while (0) 163 #endif 164 165 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 166 struct ps3_prealloc ps3flash_bounce_buffer = { 167 .name = "ps3flash bounce buffer", 168 .size = 256*1024, 169 .align = 256*1024 170 }; 171 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer); 172 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer) 173 174 static int __init early_parse_ps3flash(char *p) 175 { 176 if (!p) 177 return 1; 178 179 if (!strcmp(p, "off")) 180 ps3flash_bounce_buffer.size = 0; 181 182 return 0; 183 } 184 early_param("ps3flash", early_parse_ps3flash); 185 #else 186 #define prealloc_ps3flash_bounce_buffer() do { } while (0) 187 #endif 188 189 static int ps3_set_dabr(unsigned long dabr) 190 { 191 enum {DABR_USER = 1, DABR_KERNEL = 2,}; 192 193 return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0; 194 } 195 196 static void __init ps3_setup_arch(void) 197 { 198 199 DBG(" -> %s:%d\n", __func__, __LINE__); 200 201 lv1_get_version_info(&ps3_firmware_version.raw); 202 printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", 203 ps3_firmware_version.major, ps3_firmware_version.minor, 204 ps3_firmware_version.rev); 205 206 ps3_spu_set_platform(); 207 208 #ifdef CONFIG_SMP 209 smp_init_ps3(); 210 #endif 211 212 #ifdef CONFIG_DUMMY_CONSOLE 213 conswitchp = &dummy_con; 214 #endif 215 216 prealloc_ps3fb_videomemory(); 217 prealloc_ps3flash_bounce_buffer(); 218 219 ppc_md.power_save = ps3_power_save; 220 ps3_os_area_init(); 221 222 DBG(" <- %s:%d\n", __func__, __LINE__); 223 } 224 225 static void __init ps3_progress(char *s, unsigned short hex) 226 { 227 printk("*** %04x : %s\n", hex, s ? s : ""); 228 } 229 230 static int __init ps3_probe(void) 231 { 232 unsigned long htab_size; 233 unsigned long dt_root; 234 235 DBG(" -> %s:%d\n", __func__, __LINE__); 236 237 dt_root = of_get_flat_dt_root(); 238 if (!of_flat_dt_is_compatible(dt_root, "sony,ps3")) 239 return 0; 240 241 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; 242 243 ps3_os_area_save_params(); 244 ps3_mm_init(); 245 ps3_mm_vas_create(&htab_size); 246 ps3_hpte_init(htab_size); 247 248 DBG(" <- %s:%d\n", __func__, __LINE__); 249 return 1; 250 } 251 252 #if defined(CONFIG_KEXEC) 253 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 254 { 255 int cpu = smp_processor_id(); 256 257 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu); 258 259 ps3_smp_cleanup_cpu(cpu); 260 ps3_shutdown_IRQ(cpu); 261 262 DBG(" <- %s:%d\n", __func__, __LINE__); 263 } 264 #endif 265 266 define_machine(ps3) { 267 .name = "PS3", 268 .probe = ps3_probe, 269 .setup_arch = ps3_setup_arch, 270 .init_IRQ = ps3_init_IRQ, 271 .panic = ps3_panic, 272 .get_boot_time = ps3_get_boot_time, 273 .set_dabr = ps3_set_dabr, 274 .calibrate_decr = ps3_calibrate_decr, 275 .progress = ps3_progress, 276 .restart = ps3_restart, 277 .power_off = ps3_power_off, 278 .halt = ps3_halt, 279 #if defined(CONFIG_KEXEC) 280 .kexec_cpu_down = ps3_kexec_cpu_down, 281 #endif 282 }; 283