arch/powerpc/platforms/ps3/setup.c

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