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