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 static void ps3_show_cpuinfo(struct seq_file *m) 45 { 46 seq_printf(m, "machine\t\t: %s\n", ppc_md.name); 47 } 48 49 static void ps3_power_save(void) 50 { 51 /* 52 * lv1_pause() puts the PPE thread into inactive state until an 53 * irq on an unmasked plug exists. MSR[EE] has no effect. 54 * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt. 55 */ 56 57 lv1_pause(0); 58 } 59 60 static void ps3_panic(char *str) 61 { 62 DBG("%s:%d %s\n", __func__, __LINE__, str); 63 64 #ifdef CONFIG_SMP 65 smp_send_stop(); 66 #endif 67 printk("\n"); 68 printk(" System does not reboot automatically.\n"); 69 printk(" Please press POWER button.\n"); 70 printk("\n"); 71 72 for (;;) ; 73 } 74 75 static void __init ps3_setup_arch(void) 76 { 77 DBG(" -> %s:%d\n", __func__, __LINE__); 78 79 ps3_spu_set_platform(); 80 ps3_map_htab(); 81 82 #ifdef CONFIG_SMP 83 smp_init_ps3(); 84 #endif 85 86 #ifdef CONFIG_DUMMY_CONSOLE 87 conswitchp = &dummy_con; 88 #endif 89 90 ppc_md.power_save = ps3_power_save; 91 92 DBG(" <- %s:%d\n", __func__, __LINE__); 93 } 94 95 static void __init ps3_progress(char *s, unsigned short hex) 96 { 97 printk("*** %04x : %s\n", hex, s ? s : ""); 98 } 99 100 static int __init ps3_probe(void) 101 { 102 unsigned long htab_size; 103 unsigned long dt_root; 104 105 DBG(" -> %s:%d\n", __func__, __LINE__); 106 107 dt_root = of_get_flat_dt_root(); 108 if (!of_flat_dt_is_compatible(dt_root, "PS3")) 109 return 0; 110 111 powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE; 112 113 ps3_os_area_init(); 114 ps3_mm_init(); 115 ps3_mm_vas_create(&htab_size); 116 ps3_hpte_init(htab_size); 117 118 DBG(" <- %s:%d\n", __func__, __LINE__); 119 return 1; 120 } 121 122 #if defined(CONFIG_KEXEC) 123 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary) 124 { 125 DBG(" -> %s:%d\n", __func__, __LINE__); 126 127 if (secondary) { 128 int cpu; 129 for_each_online_cpu(cpu) 130 if (cpu) 131 ps3_smp_cleanup_cpu(cpu); 132 } else 133 ps3_smp_cleanup_cpu(0); 134 135 DBG(" <- %s:%d\n", __func__, __LINE__); 136 } 137 138 static void ps3_machine_kexec(struct kimage *image) 139 { 140 unsigned long ppe_id; 141 142 DBG(" -> %s:%d\n", __func__, __LINE__); 143 144 lv1_get_logical_ppe_id(&ppe_id); 145 lv1_configure_irq_state_bitmap(ppe_id, 0, 0); 146 ps3_mm_shutdown(); 147 ps3_mm_vas_destroy(); 148 149 default_machine_kexec(image); 150 151 DBG(" <- %s:%d\n", __func__, __LINE__); 152 } 153 #endif 154 155 define_machine(ps3) { 156 .name = "PS3", 157 .probe = ps3_probe, 158 .setup_arch = ps3_setup_arch, 159 .show_cpuinfo = ps3_show_cpuinfo, 160 .init_IRQ = ps3_init_IRQ, 161 .panic = ps3_panic, 162 .get_boot_time = ps3_get_boot_time, 163 .set_rtc_time = ps3_set_rtc_time, 164 .get_rtc_time = ps3_get_rtc_time, 165 .calibrate_decr = ps3_calibrate_decr, 166 .progress = ps3_progress, 167 #if defined(CONFIG_KEXEC) 168 .kexec_cpu_down = ps3_kexec_cpu_down, 169 .machine_kexec = ps3_machine_kexec, 170 .machine_kexec_prepare = default_machine_kexec_prepare, 171 .machine_crash_shutdown = default_machine_crash_shutdown, 172 #endif 173 }; 174