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 #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 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
  85 static void prealloc(struct ps3_prealloc *p)
  86 {
  87         if (!p->size)
  88                 return;
  89
  90         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
  91         if (!p->address) {
  92                 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
  93                        p->name);
  94                 return;
  95         }
  96
  97         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
  98                p->address);
  99 }
 100
 101 #ifdef CONFIG_FB_PS3
 102 struct ps3_prealloc ps3fb_videomemory = {
 103     .name = "ps3fb videomemory",
 104     .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 105     .align = 1024*1024                  /* the GPU requires 1 MiB alignment */
 106 };
 107 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 108
 109 static int __init early_parse_ps3fb(char *p)
 110 {
 111         if (!p)
 112                 return 1;
 113
 114         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 115                                            ps3fb_videomemory.align);
 116         return 0;
 117 }
 118 early_param("ps3fb", early_parse_ps3fb);
 119 #else
 120 #define prealloc_ps3fb_videomemory()    do { } while (0)
 121 #endif
 122
 123
 124 static void __init ps3_setup_arch(void)
 125 {
 126         union ps3_firmware_version v;
 127
 128         DBG(" -> %s:%d\n", __func__, __LINE__);
 129
 130         ps3_get_firmware_version(&v);
 131         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", v.major, v.minor,
 132                 v.rev);
 133
 134         ps3_spu_set_platform();
 135         ps3_map_htab();
 136
 137 #ifdef CONFIG_SMP
 138         smp_init_ps3();
 139 #endif
 140
 141 #ifdef CONFIG_DUMMY_CONSOLE
 142         conswitchp = &dummy_con;
 143 #endif
 144
 145         prealloc_ps3fb_videomemory();
 146         ppc_md.power_save = ps3_power_save;
 147
 148         DBG(" <- %s:%d\n", __func__, __LINE__);
 149 }
 150
 151 static void __init ps3_progress(char *s, unsigned short hex)
 152 {
 153         printk("*** %04x : %s\n", hex, s ? s : "");
 154 }
 155
 156 static int __init ps3_probe(void)
 157 {
 158         unsigned long htab_size;
 159         unsigned long dt_root;
 160
 161         DBG(" -> %s:%d\n", __func__, __LINE__);
 162
 163         dt_root = of_get_flat_dt_root();
 164         if (!of_flat_dt_is_compatible(dt_root, "PS3"))
 165                 return 0;
 166
 167         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
 168
 169         ps3_os_area_init();
 170         ps3_mm_init();
 171         ps3_mm_vas_create(&htab_size);
 172         ps3_hpte_init(htab_size);
 173
 174         DBG(" <- %s:%d\n", __func__, __LINE__);
 175         return 1;
 176 }
 177
 178 #if defined(CONFIG_KEXEC)
 179 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
 180 {
 181         DBG(" -> %s:%d\n", __func__, __LINE__);
 182
 183         if (secondary) {
 184                 int cpu;
 185                 for_each_online_cpu(cpu)
 186                         if (cpu)
 187                                 ps3_smp_cleanup_cpu(cpu);
 188         } else
 189                 ps3_smp_cleanup_cpu(0);
 190
 191         DBG(" <- %s:%d\n", __func__, __LINE__);
 192 }
 193
 194 static void ps3_machine_kexec(struct kimage *image)
 195 {
 196         unsigned long ppe_id;
 197
 198         DBG(" -> %s:%d\n", __func__, __LINE__);
 199
 200         lv1_get_logical_ppe_id(&ppe_id);
 201         lv1_configure_irq_state_bitmap(ppe_id, 0, 0);
 202         ps3_mm_shutdown();
 203         ps3_mm_vas_destroy();
 204
 205         default_machine_kexec(image);
 206
 207         DBG(" <- %s:%d\n", __func__, __LINE__);
 208 }
 209 #endif
 210
 211 define_machine(ps3) {
 212         .name                           = "PS3",
 213         .probe                          = ps3_probe,
 214         .setup_arch                     = ps3_setup_arch,
 215         .init_IRQ                       = ps3_init_IRQ,
 216         .panic                          = ps3_panic,
 217         .get_boot_time                  = ps3_get_boot_time,
 218         .set_rtc_time                   = ps3_set_rtc_time,
 219         .get_rtc_time                   = ps3_get_rtc_time,
 220         .calibrate_decr                 = ps3_calibrate_decr,
 221         .progress                       = ps3_progress,
 222 #if defined(CONFIG_KEXEC)
 223         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 224         .machine_kexec                  = ps3_machine_kexec,
 225         .machine_kexec_prepare          = default_machine_kexec_prepare,
 226         .machine_crash_shutdown         = default_machine_crash_shutdown,
 227 #endif
 228 };