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/export.h> 27 #include <linux/bootmem.h> 28 29 #include <asm/machdep.h> 30 #include <asm/firmware.h> 31 #include <asm/time.h> 32 #include <asm/iommu.h> 33 #include <asm/udbg.h> 34 #include <asm/prom.h> 35 #include <asm/lv1call.h> 36 #include <asm/ps3gpu.h> 37 38 #include "platform.h" 39 40 #if defined(DEBUG) 41 #define DBG udbg_printf 42 #else 43 #define DBG pr_debug 44 #endif 45 46 /* mutex synchronizing GPU accesses and video mode changes */ 47 DEFINE_MUTEX(ps3_gpu_mutex); 48 EXPORT_SYMBOL_GPL(ps3_gpu_mutex); 49 50 static union ps3_firmware_version ps3_firmware_version; 51 52 void ps3_get_firmware_version(union ps3_firmware_version *v) 53 { 54 *v = ps3_firmware_version; 55 } 56 EXPORT_SYMBOL_GPL(ps3_get_firmware_version); 57 58 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev) 59 { 60 union ps3_firmware_version x; 61 62 x.pad = 0; 63 x.major = major; 64 x.minor = minor; 65 x.rev = rev; 66 67 return (ps3_firmware_version.raw > x.raw) - 68 (ps3_firmware_version.raw < x.raw); 69 } 70 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version); 71 72 static void ps3_power_save(void) 73 { 74 /* 75 * lv1_pause() puts the PPE thread into inactive state until an 76 * irq on an unmasked plug exists. MSR[EE] has no effect. 77 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt. 78 */ 79 80 lv1_pause(0); 81 } 82 83 static void ps3_restart(char *cmd) 84 { 85 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd); 86 87 smp_send_stop(); 88 ps3_sys_manager_restart(); /* never returns */ 89 } 90 91 static void ps3_power_off(void) 92 { 93 DBG("%s:%d\n", __func__, __LINE__); 94 95 smp_send_stop(); 96 ps3_sys_manager_power_off(); /* never returns */ 97 } 98 99 static void ps3_halt(void) 100 { 101 DBG("%s:%d\n", __func__, __LINE__); 102 103 smp_send_stop(); 104 ps3_sys_manager_halt(); /* never returns */ 105 } 106 107 static void ps3_panic(char *str) 108 { 109 DBG("%s:%d %s\n", __func__, __LINE__, str); 110 111 smp_send_stop(); 112 printk("\n"); 113 printk(" System does not reboot automatically.\n"); 114 printk(" Please press POWER button.\n"); 115 printk("\n"); 116 117 while(1) 118 lv1_pause(1); 119 } 120 121 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \ 122 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 123 static void __init prealloc(struct ps3_prealloc *p) 124 { 125 if (!p->size) 126 return; 127 128 p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS)); 129 if (!p->address) { 130 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__, 131 p->name); 132 return; 133 } 134 135 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size, 136 p->address); 137 } 138 #endif 139 140 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) 141 struct ps3_prealloc ps3fb_videomemory = { 142 .name = "ps3fb videomemory", 143 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024, 144 .align = 1024*1024 /* the GPU requires 1 MiB alignment */ 145 }; 146 EXPORT_SYMBOL_GPL(ps3fb_videomemory); 147 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory) 148 149 static int __init early_parse_ps3fb(char *p) 150 { 151 if (!p) 152 return 1; 153 154 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p), 155 ps3fb_videomemory.align); 156 return 0; 157 } 158 early_param("ps3fb", early_parse_ps3fb); 159 #else 160 #define prealloc_ps3fb_videomemory() do { } while (0) 161 #endif 162 163 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 164 struct ps3_prealloc ps3flash_bounce_buffer = { 165 .name = "ps3flash bounce buffer", 166 .size = 256*1024, 167 .align = 256*1024 168 }; 169 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer); 170 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer) 171 172 static int __init early_parse_ps3flash(char *p) 173 { 174 if (!p) 175 return 1; 176 177 if (!strcmp(p, "off")) 178 ps3flash_bounce_buffer.size = 0; 179 180 return 0; 181 } 182 early_param("ps3flash", early_parse_ps3flash); 183 #else 184 #define prealloc_ps3flash_bounce_buffer() do { } while (0) 185 #endif 186 187 static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx) 188 { 189 /* Have to set at least one bit in the DABRX */ 190 if (dabrx == 0 && dabr == 0) 191 dabrx = DABRX_USER; 192 /* hypervisor only allows us to set BTI, Kernel and user */ 193 dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER; 194 195 return lv1_set_dabr(dabr, dabrx) ? -1 : 0; 196 } 197 198 static void __init ps3_setup_arch(void) 199 { 200 u64 tmp; 201 202 DBG(" -> %s:%d\n", __func__, __LINE__); 203 204 lv1_get_version_info(&ps3_firmware_version.raw, &tmp); 205 206 printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", 207 ps3_firmware_version.major, ps3_firmware_version.minor, 208 ps3_firmware_version.rev); 209 210 ps3_spu_set_platform(); 211 212 #ifdef CONFIG_SMP 213 smp_init_ps3(); 214 #endif 215 216 #ifdef CONFIG_DUMMY_CONSOLE 217 conswitchp = &dummy_con; 218 #endif 219 220 prealloc_ps3fb_videomemory(); 221 prealloc_ps3flash_bounce_buffer(); 222 223 ppc_md.power_save = ps3_power_save; 224 ps3_os_area_init(); 225 226 DBG(" <- %s:%d\n", __func__, __LINE__); 227 } 228 229 static void __init ps3_progress(char *s, unsigned short hex) 230 { 231 printk("*** %04x : %s\n", hex, s ? s : ""); 232 } 233 234 static int __init ps3_probe(void) 235 { 236 unsigned long htab_size; 237 unsigned long dt_root; 238 239 DBG(" -> %s:%d\n", __func__, __LINE__); 240 241 dt_root = of_get_flat_dt_root(); 242 if (!of_flat_dt_is_compatible(dt_root, "sony,ps3")) 243 return 0; 244 245 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; 246 247 ps3_os_area_save_params(); 248 ps3_mm_init(); 249 ps3_mm_vas_create(&htab_size); 250 ps3_hpte_init(htab_size); 251 252 DBG(" <- %s:%d\n", __func__, __LINE__); 253 return 1; 254 } 255 256 #if defined(CONFIG_KEXEC) 257 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 258 { 259 int cpu = smp_processor_id(); 260 261 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu); 262 263 ps3_smp_cleanup_cpu(cpu); 264 ps3_shutdown_IRQ(cpu); 265 266 DBG(" <- %s:%d\n", __func__, __LINE__); 267 } 268 #endif 269 270 define_machine(ps3) { 271 .name = "PS3", 272 .probe = ps3_probe, 273 .setup_arch = ps3_setup_arch, 274 .init_IRQ = ps3_init_IRQ, 275 .panic = ps3_panic, 276 .get_boot_time = ps3_get_boot_time, 277 .set_dabr = ps3_set_dabr, 278 .calibrate_decr = ps3_calibrate_decr, 279 .progress = ps3_progress, 280 .restart = ps3_restart, 281 .power_off = ps3_power_off, 282 .halt = ps3_halt, 283 #if defined(CONFIG_KEXEC) 284 .kexec_cpu_down = ps3_kexec_cpu_down, 285 #endif 286 }; 287