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 udbg_printf
  41 #else
  42 #define DBG pr_debug
  43 #endif
  44
  45 /* mutex synchronizing GPU accesses and video mode changes */
  46 DEFINE_MUTEX(ps3_gpu_mutex);
  47 EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
  48
  49 #if !defined(CONFIG_SMP)
  50 static void smp_send_stop(void) {}
  51 #endif
  52
  53 static union ps3_firmware_version ps3_firmware_version;
  54
  55 void ps3_get_firmware_version(union ps3_firmware_version *v)
  56 {
  57         *v = ps3_firmware_version;
  58 }
  59 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
  60
  61 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
  62 {
  63         union ps3_firmware_version x;
  64
  65         x.pad = 0;
  66         x.major = major;
  67         x.minor = minor;
  68         x.rev = rev;
  69
  70         return (ps3_firmware_version.raw > x.raw) -
  71                (ps3_firmware_version.raw < x.raw);
  72 }
  73 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
  74
  75 static void ps3_power_save(void)
  76 {
  77         /*
  78          * lv1_pause() puts the PPE thread into inactive state until an
  79          * irq on an unmasked plug exists. MSR[EE] has no effect.
  80          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
  81          */
  82
  83         lv1_pause(0);
  84 }
  85
  86 static void ps3_restart(char *cmd)
  87 {
  88         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
  89
  90         smp_send_stop();
  91         ps3_sys_manager_restart(); /* never returns */
  92 }
  93
  94 static void ps3_power_off(void)
  95 {
  96         DBG("%s:%d\n", __func__, __LINE__);
  97
  98         smp_send_stop();
  99         ps3_sys_manager_power_off(); /* never returns */
 100 }
 101
 102 static void ps3_halt(void)
 103 {
 104         DBG("%s:%d\n", __func__, __LINE__);
 105
 106         smp_send_stop();
 107         ps3_sys_manager_halt(); /* never returns */
 108 }
 109
 110 static void ps3_panic(char *str)
 111 {
 112         DBG("%s:%d %s\n", __func__, __LINE__, str);
 113
 114         smp_send_stop();
 115         printk("\n");
 116         printk("   System does not reboot automatically.\n");
 117         printk("   Please press POWER button.\n");
 118         printk("\n");
 119
 120         while(1)
 121                 lv1_pause(1);
 122 }
 123
 124 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
 125     defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 126 static void __init prealloc(struct ps3_prealloc *p)
 127 {
 128         if (!p->size)
 129                 return;
 130
 131         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
 132         if (!p->address) {
 133                 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__,
 134                        p->name);
 135                 return;
 136         }
 137
 138         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 139                p->address);
 140 }
 141 #endif
 142
 143 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
 144 struct ps3_prealloc ps3fb_videomemory = {
 145         .name = "ps3fb videomemory",
 146         .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 147         .align = 1024*1024              /* the GPU requires 1 MiB alignment */
 148 };
 149 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
 150 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 151
 152 static int __init early_parse_ps3fb(char *p)
 153 {
 154         if (!p)
 155                 return 1;
 156
 157         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 158                                            ps3fb_videomemory.align);
 159         return 0;
 160 }
 161 early_param("ps3fb", early_parse_ps3fb);
 162 #else
 163 #define prealloc_ps3fb_videomemory()    do { } while (0)
 164 #endif
 165
 166 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 167 struct ps3_prealloc ps3flash_bounce_buffer = {
 168         .name = "ps3flash bounce buffer",
 169         .size = 256*1024,
 170         .align = 256*1024
 171 };
 172 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
 173 #define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
 174
 175 static int __init early_parse_ps3flash(char *p)
 176 {
 177         if (!p)
 178                 return 1;
 179
 180         if (!strcmp(p, "off"))
 181                 ps3flash_bounce_buffer.size = 0;
 182
 183         return 0;
 184 }
 185 early_param("ps3flash", early_parse_ps3flash);
 186 #else
 187 #define prealloc_ps3flash_bounce_buffer()       do { } while (0)
 188 #endif
 189
 190 static int ps3_set_dabr(u64 dabr)
 191 {
 192         enum {DABR_USER = 1, DABR_KERNEL = 2,};
 193
 194         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
 195 }
 196
 197 static void __init ps3_setup_arch(void)
 198 {
 199
 200         DBG(" -> %s:%d\n", __func__, __LINE__);
 201
 202         lv1_get_version_info(&ps3_firmware_version.raw);
 203         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
 204                ps3_firmware_version.major, ps3_firmware_version.minor,
 205                ps3_firmware_version.rev);
 206
 207         ps3_spu_set_platform();
 208
 209 #ifdef CONFIG_SMP
 210         smp_init_ps3();
 211 #endif
 212
 213 #ifdef CONFIG_DUMMY_CONSOLE
 214         conswitchp = &dummy_con;
 215 #endif
 216
 217         prealloc_ps3fb_videomemory();
 218         prealloc_ps3flash_bounce_buffer();
 219
 220         ppc_md.power_save = ps3_power_save;
 221         ps3_os_area_init();
 222
 223         DBG(" <- %s:%d\n", __func__, __LINE__);
 224 }
 225
 226 static void __init ps3_progress(char *s, unsigned short hex)
 227 {
 228         printk("*** %04x : %s\n", hex, s ? s : "");
 229 }
 230
 231 static int __init ps3_probe(void)
 232 {
 233         unsigned long htab_size;
 234         unsigned long dt_root;
 235
 236         DBG(" -> %s:%d\n", __func__, __LINE__);
 237
 238         dt_root = of_get_flat_dt_root();
 239         if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
 240                 return 0;
 241
 242         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
 243
 244         ps3_os_area_save_params();
 245         ps3_mm_init();
 246         ps3_mm_vas_create(&htab_size);
 247         ps3_hpte_init(htab_size);
 248
 249         DBG(" <- %s:%d\n", __func__, __LINE__);
 250         return 1;
 251 }
 252
 253 #if defined(CONFIG_KEXEC)
 254 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
 255 {
 256         int cpu = smp_processor_id();
 257
 258         DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
 259
 260         ps3_smp_cleanup_cpu(cpu);
 261         ps3_shutdown_IRQ(cpu);
 262
 263         DBG(" <- %s:%d\n", __func__, __LINE__);
 264 }
 265 #endif
 266
 267 define_machine(ps3) {
 268         .name                           = "PS3",
 269         .probe                          = ps3_probe,
 270         .setup_arch                     = ps3_setup_arch,
 271         .init_IRQ                       = ps3_init_IRQ,
 272         .panic                          = ps3_panic,
 273         .get_boot_time                  = ps3_get_boot_time,
 274         .set_rtc_time                   = ps3_set_rtc_time,
 275         .get_rtc_time                   = ps3_get_rtc_time,
 276         .set_dabr                       = ps3_set_dabr,
 277         .calibrate_decr                 = ps3_calibrate_decr,
 278         .progress                       = ps3_progress,
 279         .restart                        = ps3_restart,
 280         .power_off                      = ps3_power_off,
 281         .halt                           = ps3_halt,
 282 #if defined(CONFIG_KEXEC)
 283         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 284         .machine_kexec                  = default_machine_kexec,
 285         .machine_kexec_prepare          = default_machine_kexec_prepare,
 286         .machine_crash_shutdown         = default_machine_crash_shutdown,
 287 #endif
 288 };