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