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(fmt...) udbg_printf(fmt) 41 #else 42 #define DBG(fmt...) do{if(0)printk(fmt);}while(0) 43 #endif 44 45 #if !defined(CONFIG_SMP) 46 static void smp_send_stop(void) {} 47 #endif 48 49 int ps3_get_firmware_version(union ps3_firmware_version *v) 50 { 51 int result = lv1_get_version_info(&v->raw); 52 53 if (result) { 54 v->raw = 0; 55 return -1; 56 } 57 58 return result; 59 } 60 EXPORT_SYMBOL_GPL(ps3_get_firmware_version); 61 62 static void ps3_power_save(void) 63 { 64 /* 65 * lv1_pause() puts the PPE thread into inactive state until an 66 * irq on an unmasked plug exists. MSR[EE] has no effect. 67 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt. 68 */ 69 70 lv1_pause(0); 71 } 72 73 static void ps3_restart(char *cmd) 74 { 75 DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd); 76 77 smp_send_stop(); 78 ps3_sys_manager_restart(); /* never returns */ 79 } 80 81 static void ps3_power_off(void) 82 { 83 DBG("%s:%d\n", __func__, __LINE__); 84 85 smp_send_stop(); 86 ps3_sys_manager_power_off(); /* never returns */ 87 } 88 89 static void ps3_panic(char *str) 90 { 91 DBG("%s:%d %s\n", __func__, __LINE__, str); 92 93 smp_send_stop(); 94 printk("\n"); 95 printk(" System does not reboot automatically.\n"); 96 printk(" Please press POWER button.\n"); 97 printk("\n"); 98 99 while(1); 100 } 101 102 static void prealloc(struct ps3_prealloc *p) 103 { 104 if (!p->size) 105 return; 106 107 p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS)); 108 if (!p->address) { 109 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__, 110 p->name); 111 return; 112 } 113 114 printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size, 115 p->address); 116 } 117 118 #ifdef CONFIG_FB_PS3 119 struct ps3_prealloc ps3fb_videomemory = { 120 .name = "ps3fb videomemory", 121 .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024, 122 .align = 1024*1024 /* the GPU requires 1 MiB alignment */ 123 }; 124 #define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory) 125 126 static int __init early_parse_ps3fb(char *p) 127 { 128 if (!p) 129 return 1; 130 131 ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p), 132 ps3fb_videomemory.align); 133 return 0; 134 } 135 early_param("ps3fb", early_parse_ps3fb); 136 #else 137 #define prealloc_ps3fb_videomemory() do { } while (0) 138 #endif 139 140 141 static void __init ps3_setup_arch(void) 142 { 143 union ps3_firmware_version v; 144 145 DBG(" -> %s:%d\n", __func__, __LINE__); 146 147 ps3_get_firmware_version(&v); 148 printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", v.major, v.minor, 149 v.rev); 150 151 ps3_spu_set_platform(); 152 ps3_map_htab(); 153 154 #ifdef CONFIG_SMP 155 smp_init_ps3(); 156 #endif 157 158 #ifdef CONFIG_DUMMY_CONSOLE 159 conswitchp = &dummy_con; 160 #endif 161 162 prealloc_ps3fb_videomemory(); 163 ppc_md.power_save = ps3_power_save; 164 165 DBG(" <- %s:%d\n", __func__, __LINE__); 166 } 167 168 static void __init ps3_progress(char *s, unsigned short hex) 169 { 170 printk("*** %04x : %s\n", hex, s ? s : ""); 171 } 172 173 static int __init ps3_probe(void) 174 { 175 unsigned long htab_size; 176 unsigned long dt_root; 177 178 DBG(" -> %s:%d\n", __func__, __LINE__); 179 180 dt_root = of_get_flat_dt_root(); 181 if (!of_flat_dt_is_compatible(dt_root, "PS3")) 182 return 0; 183 184 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; 185 186 ps3_os_area_init(); 187 ps3_mm_init(); 188 ps3_mm_vas_create(&htab_size); 189 ps3_hpte_init(htab_size); 190 191 DBG(" <- %s:%d\n", __func__, __LINE__); 192 return 1; 193 } 194 195 #if defined(CONFIG_KEXEC) 196 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 197 { 198 DBG(" -> %s:%d\n", __func__, __LINE__); 199 200 if (secondary) { 201 int cpu; 202 for_each_online_cpu(cpu) 203 if (cpu) 204 ps3_smp_cleanup_cpu(cpu); 205 } else 206 ps3_smp_cleanup_cpu(0); 207 208 DBG(" <- %s:%d\n", __func__, __LINE__); 209 } 210 211 static void ps3_machine_kexec(struct kimage *image) 212 { 213 unsigned long ppe_id; 214 215 DBG(" -> %s:%d\n", __func__, __LINE__); 216 217 lv1_get_logical_ppe_id(&ppe_id); 218 lv1_configure_irq_state_bitmap(ppe_id, 0, 0); 219 ps3_mm_shutdown(); 220 ps3_mm_vas_destroy(); 221 222 default_machine_kexec(image); 223 224 DBG(" <- %s:%d\n", __func__, __LINE__); 225 } 226 #endif 227 228 define_machine(ps3) { 229 .name = "PS3", 230 .probe = ps3_probe, 231 .setup_arch = ps3_setup_arch, 232 .init_IRQ = ps3_init_IRQ, 233 .panic = ps3_panic, 234 .get_boot_time = ps3_get_boot_time, 235 .set_rtc_time = ps3_set_rtc_time, 236 .get_rtc_time = ps3_get_rtc_time, 237 .calibrate_decr = ps3_calibrate_decr, 238 .progress = ps3_progress, 239 .restart = ps3_restart, 240 .power_off = ps3_power_off, 241 #if defined(CONFIG_KEXEC) 242 .kexec_cpu_down = ps3_kexec_cpu_down, 243 .machine_kexec = ps3_machine_kexec, 244 .machine_kexec_prepare = default_machine_kexec_prepare, 245 .machine_crash_shutdown = default_machine_crash_shutdown, 246 #endif 247 }; 248