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/export.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 #include <asm/ps3gpu.h>
  37
  38 #include "platform.h"
  39
  40 #if defined(DEBUG)
  41 #define DBG udbg_printf
  42 #else
  43 #define DBG pr_debug
  44 #endif
  45
  46 /* mutex synchronizing GPU accesses and video mode changes */
  47 DEFINE_MUTEX(ps3_gpu_mutex);
  48 EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
  49
  50 static union ps3_firmware_version ps3_firmware_version;
  51
  52 void ps3_get_firmware_version(union ps3_firmware_version *v)
  53 {
  54         *v = ps3_firmware_version;
  55 }
  56 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
  57
  58 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
  59 {
  60         union ps3_firmware_version x;
  61
  62         x.pad = 0;
  63         x.major = major;
  64         x.minor = minor;
  65         x.rev = rev;
  66
  67         return (ps3_firmware_version.raw > x.raw) -
  68                (ps3_firmware_version.raw < x.raw);
  69 }
  70 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
  71
  72 static void ps3_power_save(void)
  73 {
  74         /*
  75          * lv1_pause() puts the PPE thread into inactive state until an
  76          * irq on an unmasked plug exists. MSR[EE] has no effect.
  77          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
  78          */
  79
  80         lv1_pause(0);
  81 }
  82
  83 static void ps3_restart(char *cmd)
  84 {
  85         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
  86
  87         smp_send_stop();
  88         ps3_sys_manager_restart(); /* never returns */
  89 }
  90
  91 static void ps3_power_off(void)
  92 {
  93         DBG("%s:%d\n", __func__, __LINE__);
  94
  95         smp_send_stop();
  96         ps3_sys_manager_power_off(); /* never returns */
  97 }
  98
  99 static void ps3_halt(void)
 100 {
 101         DBG("%s:%d\n", __func__, __LINE__);
 102
 103         smp_send_stop();
 104         ps3_sys_manager_halt(); /* never returns */
 105 }
 106
 107 static void ps3_panic(char *str)
 108 {
 109         DBG("%s:%d %s\n", __func__, __LINE__, str);
 110
 111         smp_send_stop();
 112         printk("\n");
 113         printk("   System does not reboot automatically.\n");
 114         printk("   Please press POWER button.\n");
 115         printk("\n");
 116
 117         while(1)
 118                 lv1_pause(1);
 119 }
 120
 121 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
 122     defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 123 static void __init prealloc(struct ps3_prealloc *p)
 124 {
 125         if (!p->size)
 126                 return;
 127
 128         p->address = memblock_virt_alloc(p->size, p->align);
 129
 130         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 131                p->address);
 132 }
 133 #endif
 134
 135 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
 136 struct ps3_prealloc ps3fb_videomemory = {
 137         .name = "ps3fb videomemory",
 138         .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 139         .align = 1024*1024              /* the GPU requires 1 MiB alignment */
 140 };
 141 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
 142 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 143
 144 static int __init early_parse_ps3fb(char *p)
 145 {
 146         if (!p)
 147                 return 1;
 148
 149         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 150                                            ps3fb_videomemory.align);
 151         return 0;
 152 }
 153 early_param("ps3fb", early_parse_ps3fb);
 154 #else
 155 #define prealloc_ps3fb_videomemory()    do { } while (0)
 156 #endif
 157
 158 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 159 struct ps3_prealloc ps3flash_bounce_buffer = {
 160         .name = "ps3flash bounce buffer",
 161         .size = 256*1024,
 162         .align = 256*1024
 163 };
 164 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
 165 #define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
 166
 167 static int __init early_parse_ps3flash(char *p)
 168 {
 169         if (!p)
 170                 return 1;
 171
 172         if (!strcmp(p, "off"))
 173                 ps3flash_bounce_buffer.size = 0;
 174
 175         return 0;
 176 }
 177 early_param("ps3flash", early_parse_ps3flash);
 178 #else
 179 #define prealloc_ps3flash_bounce_buffer()       do { } while (0)
 180 #endif
 181
 182 static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx)
 183 {
 184         /* Have to set at least one bit in the DABRX */
 185         if (dabrx == 0 && dabr == 0)
 186                 dabrx = DABRX_USER;
 187         /* hypervisor only allows us to set BTI, Kernel and user */
 188         dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER;
 189
 190         return lv1_set_dabr(dabr, dabrx) ? -1 : 0;
 191 }
 192
 193 static void __init ps3_setup_arch(void)
 194 {
 195         u64 tmp;
 196
 197         DBG(" -> %s:%d\n", __func__, __LINE__);
 198
 199         lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
 200
 201         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
 202                ps3_firmware_version.major, ps3_firmware_version.minor,
 203                ps3_firmware_version.rev);
 204
 205         ps3_spu_set_platform();
 206
 207 #ifdef CONFIG_SMP
 208         smp_init_ps3();
 209 #endif
 210
 211 #ifdef CONFIG_DUMMY_CONSOLE
 212         conswitchp = &dummy_con;
 213 #endif
 214
 215         prealloc_ps3fb_videomemory();
 216         prealloc_ps3flash_bounce_buffer();
 217
 218         ppc_md.power_save = ps3_power_save;
 219         ps3_os_area_init();
 220
 221         DBG(" <- %s:%d\n", __func__, __LINE__);
 222 }
 223
 224 static void __init ps3_progress(char *s, unsigned short hex)
 225 {
 226         printk("*** %04x : %s\n", hex, s ? s : "");
 227 }
 228
 229 static int __init ps3_probe(void)
 230 {
 231         unsigned long htab_size;
 232         unsigned long dt_root;
 233
 234         DBG(" -> %s:%d\n", __func__, __LINE__);
 235
 236         dt_root = of_get_flat_dt_root();
 237         if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
 238                 return 0;
 239
 240         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
 241
 242         ps3_os_area_save_params();
 243         ps3_mm_init();
 244         ps3_mm_vas_create(&htab_size);
 245         ps3_hpte_init(htab_size);
 246         pm_power_off = ps3_power_off;
 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_dabr                       = ps3_set_dabr,
 274         .calibrate_decr                 = ps3_calibrate_decr,
 275         .progress                       = ps3_progress,
 276         .restart                        = ps3_restart,
 277         .halt                           = ps3_halt,
 278 #if defined(CONFIG_KEXEC)
 279         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 280 #endif
 281 };