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 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(fmt...) udbg_printf(fmt) 40 #else 41 #define DBG(fmt...) do{if(0)printk(fmt);}while(0) 42 #endif 43 44 int ps3_get_firmware_version(union ps3_firmware_version *v) 45 { 46 int result = lv1_get_version_info(&v->raw); 47 48 if (result) { 49 v->raw = 0; 50 return -1; 51 } 52 53 return result; 54 } 55 EXPORT_SYMBOL_GPL(ps3_get_firmware_version); 56 57 static void ps3_power_save(void) 58 { 59 /* 60 * lv1_pause() puts the PPE thread into inactive state until an 61 * irq on an unmasked plug exists. MSR[EE] has no effect. 62 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt. 63 */ 64 65 lv1_pause(0); 66 } 67 68 static void ps3_panic(char *str) 69 { 70 DBG("%s:%d %s\n", __func__, __LINE__, str); 71 72 #ifdef CONFIG_SMP 73 smp_send_stop(); 74 #endif 75 printk("\n"); 76 printk(" System does not reboot automatically.\n"); 77 printk(" Please press POWER button.\n"); 78 printk("\n"); 79 80 for (;;) ; 81 } 82 83 static void __init ps3_setup_arch(void) 84 { 85 union ps3_firmware_version v; 86 87 DBG(" -> %s:%d\n", __func__, __LINE__); 88 89 ps3_get_firmware_version(&v); 90 printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", v.major, v.minor, 91 v.rev); 92 93 ps3_spu_set_platform(); 94 ps3_map_htab(); 95 96 #ifdef CONFIG_SMP 97 smp_init_ps3(); 98 #endif 99 100 #ifdef CONFIG_DUMMY_CONSOLE 101 conswitchp = &dummy_con; 102 #endif 103 104 ppc_md.power_save = ps3_power_save; 105 106 DBG(" <- %s:%d\n", __func__, __LINE__); 107 } 108 109 static void __init ps3_progress(char *s, unsigned short hex) 110 { 111 printk("*** %04x : %s\n", hex, s ? s : ""); 112 } 113 114 static int __init ps3_probe(void) 115 { 116 unsigned long htab_size; 117 unsigned long dt_root; 118 119 DBG(" -> %s:%d\n", __func__, __LINE__); 120 121 dt_root = of_get_flat_dt_root(); 122 if (!of_flat_dt_is_compatible(dt_root, "PS3")) 123 return 0; 124 125 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; 126 127 ps3_os_area_init(); 128 ps3_mm_init(); 129 ps3_mm_vas_create(&htab_size); 130 ps3_hpte_init(htab_size); 131 132 DBG(" <- %s:%d\n", __func__, __LINE__); 133 return 1; 134 } 135 136 #if defined(CONFIG_KEXEC) 137 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 138 { 139 DBG(" -> %s:%d\n", __func__, __LINE__); 140 141 if (secondary) { 142 int cpu; 143 for_each_online_cpu(cpu) 144 if (cpu) 145 ps3_smp_cleanup_cpu(cpu); 146 } else 147 ps3_smp_cleanup_cpu(0); 148 149 DBG(" <- %s:%d\n", __func__, __LINE__); 150 } 151 152 static void ps3_machine_kexec(struct kimage *image) 153 { 154 unsigned long ppe_id; 155 156 DBG(" -> %s:%d\n", __func__, __LINE__); 157 158 lv1_get_logical_ppe_id(&ppe_id); 159 lv1_configure_irq_state_bitmap(ppe_id, 0, 0); 160 ps3_mm_shutdown(); 161 ps3_mm_vas_destroy(); 162 163 default_machine_kexec(image); 164 165 DBG(" <- %s:%d\n", __func__, __LINE__); 166 } 167 #endif 168 169 define_machine(ps3) { 170 .name = "PS3", 171 .probe = ps3_probe, 172 .setup_arch = ps3_setup_arch, 173 .init_IRQ = ps3_init_IRQ, 174 .panic = ps3_panic, 175 .get_boot_time = ps3_get_boot_time, 176 .set_rtc_time = ps3_set_rtc_time, 177 .get_rtc_time = ps3_get_rtc_time, 178 .calibrate_decr = ps3_calibrate_decr, 179 .progress = ps3_progress, 180 #if defined(CONFIG_KEXEC) 181 .kexec_cpu_down = ps3_kexec_cpu_down, 182 .machine_kexec = ps3_machine_kexec, 183 .machine_kexec_prepare = default_machine_kexec_prepare, 184 .machine_crash_shutdown = default_machine_crash_shutdown, 185 #endif 186 }; 187