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 } 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_panic(char *str) 98 { 99 DBG("%s:%d %s\n", __func__, __LINE__, str); 100 101 smp_send_stop(); 102 printk("\n"); 103 printk(" System does not reboot automatically.\n"); 104 printk(" Please press POWER button.\n"); 105 printk("\n"); 106 107 while(1); 108 } 109 110 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \ 111 defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 112 static void prealloc(struct ps3_prealloc *p) 113 { 114 if (!p->size) 115 return; 116 117 p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS)); 118 if (!p->address) { 119 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__, 120 p->name); 121 return; 122 } 123 124 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size, 125 p->address); 126 } 127 #endif 128 129 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) 130 struct ps3_prealloc ps3fb_videomemory = { 131 .name = "ps3fb videomemory", 132 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024, 133 .align = 1024*1024 /* the GPU requires 1 MiB alignment */ 134 }; 135 EXPORT_SYMBOL_GPL(ps3fb_videomemory); 136 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory) 137 138 static int __init early_parse_ps3fb(char *p) 139 { 140 if (!p) 141 return 1; 142 143 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p), 144 ps3fb_videomemory.align); 145 return 0; 146 } 147 early_param("ps3fb", early_parse_ps3fb); 148 #else 149 #define prealloc_ps3fb_videomemory() do { } while (0) 150 #endif 151 152 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE) 153 struct ps3_prealloc ps3flash_bounce_buffer = { 154 .name = "ps3flash bounce buffer", 155 .size = 256*1024, 156 .align = 256*1024 157 }; 158 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer); 159 #define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer) 160 161 static int __init early_parse_ps3flash(char *p) 162 { 163 if (!p) 164 return 1; 165 166 if (!strcmp(p, "off")) 167 ps3flash_bounce_buffer.size = 0; 168 169 return 0; 170 } 171 early_param("ps3flash", early_parse_ps3flash); 172 #else 173 #define prealloc_ps3flash_bounce_buffer() do { } while (0) 174 #endif 175 176 static int ps3_set_dabr(u64 dabr) 177 { 178 enum {DABR_USER = 1, DABR_KERNEL = 2,}; 179 180 return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0; 181 } 182 183 static void __init ps3_setup_arch(void) 184 { 185 186 DBG(" -> %s:%d\n", __func__, __LINE__); 187 188 lv1_get_version_info(&ps3_firmware_version.raw); 189 printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", 190 ps3_firmware_version.major, ps3_firmware_version.minor, 191 ps3_firmware_version.rev); 192 193 ps3_spu_set_platform(); 194 ps3_map_htab(); 195 196 #ifdef CONFIG_SMP 197 smp_init_ps3(); 198 #endif 199 200 #ifdef CONFIG_DUMMY_CONSOLE 201 conswitchp = &dummy_con; 202 #endif 203 204 prealloc_ps3fb_videomemory(); 205 prealloc_ps3flash_bounce_buffer(); 206 207 ppc_md.power_save = ps3_power_save; 208 209 DBG(" <- %s:%d\n", __func__, __LINE__); 210 } 211 212 static void __init ps3_progress(char *s, unsigned short hex) 213 { 214 printk("*** %04x : %s\n", hex, s ? s : ""); 215 } 216 217 static int __init ps3_probe(void) 218 { 219 unsigned long htab_size; 220 unsigned long dt_root; 221 222 DBG(" -> %s:%d\n", __func__, __LINE__); 223 224 dt_root = of_get_flat_dt_root(); 225 if (!of_flat_dt_is_compatible(dt_root, "sony,ps3")) 226 return 0; 227 228 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; 229 230 ps3_os_area_init(); 231 ps3_mm_init(); 232 ps3_mm_vas_create(&htab_size); 233 ps3_hpte_init(htab_size); 234 235 DBG(" <- %s:%d\n", __func__, __LINE__); 236 return 1; 237 } 238 239 #if defined(CONFIG_KEXEC) 240 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 241 { 242 int cpu = smp_processor_id(); 243 244 DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu); 245 246 ps3_smp_cleanup_cpu(cpu); 247 ps3_shutdown_IRQ(cpu); 248 249 DBG(" <- %s:%d\n", __func__, __LINE__); 250 } 251 #endif 252 253 define_machine(ps3) { 254 .name = "PS3", 255 .probe = ps3_probe, 256 .setup_arch = ps3_setup_arch, 257 .init_IRQ = ps3_init_IRQ, 258 .panic = ps3_panic, 259 .get_boot_time = ps3_get_boot_time, 260 .set_rtc_time = ps3_set_rtc_time, 261 .get_rtc_time = ps3_get_rtc_time, 262 .set_dabr = ps3_set_dabr, 263 .calibrate_decr = ps3_calibrate_decr, 264 .progress = ps3_progress, 265 .restart = ps3_restart, 266 .power_off = ps3_power_off, 267 #if defined(CONFIG_KEXEC) 268 .kexec_cpu_down = ps3_kexec_cpu_down, 269 .machine_kexec = default_machine_kexec, 270 .machine_kexec_prepare = default_machine_kexec_prepare, 271 .machine_crash_shutdown = default_machine_crash_shutdown, 272 #endif 273 }; 274