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