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
  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 };