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/kexec.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 37 #include "platform.h" 38 39 #if defined(DEBUG) 40 #define DBG udbg_printf 41 #else 42 #define DBG pr_debug 43 #endif 44 45 #if !defined(CONFIG_SMP) 46 static void smp_send_stop(void) {} 47 #endif 48 49 static union ps3_firmware_version ps3_firmware_version; 50 51 void ps3_get_firmware_version(union ps3_firmware_version *v) 52 { 53 *v = ps3_firmware_version; 54 } 55 EXPORT_SYMBOL_GPL(ps3_get_firmware_version); 56 57 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev) 58 { 59 union ps3_firmware_version x; 60 61 x.pad = 0; 62 x.major = major; 63 x.minor = minor; 64 x.rev = rev; 65 66 return (ps3_firmware_version.raw > x.raw) - 67 (ps3_firmware_version.raw < x.raw); 68 } 69 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version); 70 71 static void ps3_power_save(void) 72 { 73 /* 74 * lv1_pause() puts the PPE thread into inactive state until an 75 * irq on an unmasked plug exists. MSR[EE] has no effect. 76 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt. 77 */ 78 79 lv1_pause(0); 80 } 81 82 static void ps3_restart(char *cmd) 83 { 84 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd); 85 86 smp_send_stop(); 87 ps3_sys_manager_restart(); /* never returns */ 88 } 89 90 static void ps3_power_off(void) 91 { 92 DBG("%s:%d\n", __func__, __LINE__); 93 94 smp_send_stop(); 95 ps3_sys_manager_power_off(); /* never returns */ 96 } 97 98 static void ps3_halt(void) 99 { 100 DBG("%s:%d\n", __func__, __LINE__); 101 102 smp_send_stop(); 103 ps3_sys_manager_halt(); /* never returns */ 104 } 105 106 static void ps3_panic(char *str) 107 { 108 DBG("%s:%d %s\n", __func__, __LINE__, str); 109 110 smp_send_stop(); 111 printk("\n"); 112 printk(" System does not reboot automatically.\n"); 113 printk(" Please press POWER button.\n"); 114 printk("\n"); 115 116 while(1) 117 lv1_pause(1); 118 } 119 120 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \ 121 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 122 static void __init prealloc(struct ps3_prealloc *p) 123 { 124 if (!p->size) 125 return; 126 127 p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS)); 128 if (!p->address) { 129 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__, 130 p->name); 131 return; 132 } 133 134 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size, 135 p->address); 136 } 137 #endif 138 139 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) 140 struct ps3_prealloc ps3fb_videomemory = { 141 .name = "ps3fb videomemory", 142 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024, 143 .align = 1024*1024 /* the GPU requires 1 MiB alignment */ 144 }; 145 EXPORT_SYMBOL_GPL(ps3fb_videomemory); 146 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory) 147 148 static int __init early_parse_ps3fb(char *p) 149 { 150 if (!p) 151 return 1; 152 153 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p), 154 ps3fb_videomemory.align); 155 return 0; 156 } 157 early_param("ps3fb", early_parse_ps3fb); 158 #else 159 #define prealloc_ps3fb_videomemory() do { } while (0) 160 #endif 161 162 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 163 struct ps3_prealloc ps3flash_bounce_buffer = { 164 .name = "ps3flash bounce buffer", 165 .size = 256*1024, 166 .align = 256*1024 167 }; 168 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer); 169 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer) 170 171 static int __init early_parse_ps3flash(char *p) 172 { 173 if (!p) 174 return 1; 175 176 if (!strcmp(p, "off")) 177 ps3flash_bounce_buffer.size = 0; 178 179 return 0; 180 } 181 early_param("ps3flash", early_parse_ps3flash); 182 #else 183 #define prealloc_ps3flash_bounce_buffer() do { } while (0) 184 #endif 185 186 static int ps3_set_dabr(u64 dabr) 187 { 188 enum {DABR_USER = 1, DABR_KERNEL = 2,}; 189 190 return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0; 191 } 192 193 static void __init ps3_setup_arch(void) 194 { 195 196 DBG(" -> %s:%d\n", __func__, __LINE__); 197 198 lv1_get_version_info(&ps3_firmware_version.raw); 199 printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", 200 ps3_firmware_version.major, ps3_firmware_version.minor, 201 ps3_firmware_version.rev); 202 203 ps3_spu_set_platform(); 204 ps3_map_htab(); 205 206 #ifdef CONFIG_SMP 207 smp_init_ps3(); 208 #endif 209 210 #ifdef CONFIG_DUMMY_CONSOLE 211 conswitchp = &dummy_con; 212 #endif 213 214 prealloc_ps3fb_videomemory(); 215 prealloc_ps3flash_bounce_buffer(); 216 217 ppc_md.power_save = ps3_power_save; 218 ps3_os_area_init(); 219 220 DBG(" <- %s:%d\n", __func__, __LINE__); 221 } 222 223 static void __init ps3_progress(char *s, unsigned short hex) 224 { 225 printk("*** %04x : %s\n", hex, s ? s : ""); 226 } 227 228 static int __init ps3_probe(void) 229 { 230 unsigned long htab_size; 231 unsigned long dt_root; 232 233 DBG(" -> %s:%d\n", __func__, __LINE__); 234 235 dt_root = of_get_flat_dt_root(); 236 if (!of_flat_dt_is_compatible(dt_root, "sony,ps3")) 237 return 0; 238 239 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; 240 241 ps3_os_area_save_params(); 242 ps3_mm_init(); 243 ps3_mm_vas_create(&htab_size); 244 ps3_hpte_init(htab_size); 245 246 DBG(" <- %s:%d\n", __func__, __LINE__); 247 return 1; 248 } 249 250 #if defined(CONFIG_KEXEC) 251 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 252 { 253 int cpu = smp_processor_id(); 254 255 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu); 256 257 ps3_smp_cleanup_cpu(cpu); 258 ps3_shutdown_IRQ(cpu); 259 260 DBG(" <- %s:%d\n", __func__, __LINE__); 261 } 262 #endif 263 264 define_machine(ps3) { 265 .name = "PS3", 266 .probe = ps3_probe, 267 .setup_arch = ps3_setup_arch, 268 .init_IRQ = ps3_init_IRQ, 269 .panic = ps3_panic, 270 .get_boot_time = ps3_get_boot_time, 271 .set_rtc_time = ps3_set_rtc_time, 272 .get_rtc_time = ps3_get_rtc_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 .machine_kexec = default_machine_kexec, 282 .machine_kexec_prepare = default_machine_kexec_prepare, 283 .machine_crash_shutdown = default_machine_crash_shutdown, 284 #endif 285 }; 286