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 #if !defined(CONFIG_SMP)
  46 static void smp_send_stop(void) {}
  47 #endif
  48
  49 static union ps3_firmware_version ps3_firmware_version;
  50
  51 void ps3_get_firmware_version(union ps3_firmware_version *v)
  52 {
  53         *v = ps3_firmware_version;
  54 }
  55 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
  56
  57 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
  58 {
  59         union ps3_firmware_version x;
  60
  61         x.pad = 0;
  62         x.major = major;
  63         x.minor = minor;
  64         x.rev = rev;
  65
  66         return (ps3_firmware_version.raw > x.raw) -
  67                (ps3_firmware_version.raw < x.raw);
  68 }
  69 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
  70
  71 static void ps3_power_save(void)
  72 {
  73         /*
  74          * lv1_pause() puts the PPE thread into inactive state until an
  75          * irq on an unmasked plug exists. MSR[EE] has no effect.
  76          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
  77          */
  78
  79         lv1_pause(0);
  80 }
  81
  82 static void ps3_restart(char *cmd)
  83 {
  84         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
  85
  86         smp_send_stop();
  87         ps3_sys_manager_restart(); /* never returns */
  88 }
  89
  90 static void ps3_power_off(void)
  91 {
  92         DBG("%s:%d\n", __func__, __LINE__);
  93
  94         smp_send_stop();
  95         ps3_sys_manager_power_off(); /* never returns */
  96 }
  97
  98 static void ps3_halt(void)
  99 {
 100         DBG("%s:%d\n", __func__, __LINE__);
 101
 102         smp_send_stop();
 103         ps3_sys_manager_halt(); /* never returns */
 104 }
 105
 106 static void ps3_panic(char *str)
 107 {
 108         DBG("%s:%d %s\n", __func__, __LINE__, str);
 109
 110         smp_send_stop();
 111         printk("\n");
 112         printk("   System does not reboot automatically.\n");
 113         printk("   Please press POWER button.\n");
 114         printk("\n");
 115
 116         while(1)
 117                 lv1_pause(1);
 118 }
 119
 120 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
 121     defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 122 static void __init prealloc(struct ps3_prealloc *p)
 123 {
 124         if (!p->size)
 125                 return;
 126
 127         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
 128         if (!p->address) {
 129                 printk(KERN_ERR "%s: Cannot allocate %s\n", __func__,
 130                        p->name);
 131                 return;
 132         }
 133
 134         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 135                p->address);
 136 }
 137 #endif
 138
 139 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
 140 struct ps3_prealloc ps3fb_videomemory = {
 141         .name = "ps3fb videomemory",
 142         .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 143         .align = 1024*1024              /* the GPU requires 1 MiB alignment */
 144 };
 145 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
 146 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 147
 148 static int __init early_parse_ps3fb(char *p)
 149 {
 150         if (!p)
 151                 return 1;
 152
 153         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 154                                            ps3fb_videomemory.align);
 155         return 0;
 156 }
 157 early_param("ps3fb", early_parse_ps3fb);
 158 #else
 159 #define prealloc_ps3fb_videomemory()    do { } while (0)
 160 #endif
 161
 162 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 163 struct ps3_prealloc ps3flash_bounce_buffer = {
 164         .name = "ps3flash bounce buffer",
 165         .size = 256*1024,
 166         .align = 256*1024
 167 };
 168 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
 169 #define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
 170
 171 static int __init early_parse_ps3flash(char *p)
 172 {
 173         if (!p)
 174                 return 1;
 175
 176         if (!strcmp(p, "off"))
 177                 ps3flash_bounce_buffer.size = 0;
 178
 179         return 0;
 180 }
 181 early_param("ps3flash", early_parse_ps3flash);
 182 #else
 183 #define prealloc_ps3flash_bounce_buffer()       do { } while (0)
 184 #endif
 185
 186 static int ps3_set_dabr(u64 dabr)
 187 {
 188         enum {DABR_USER = 1, DABR_KERNEL = 2,};
 189
 190         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
 191 }
 192
 193 static void __init ps3_setup_arch(void)
 194 {
 195
 196         DBG(" -> %s:%d\n", __func__, __LINE__);
 197
 198         lv1_get_version_info(&ps3_firmware_version.raw);
 199         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
 200                ps3_firmware_version.major, ps3_firmware_version.minor,
 201                ps3_firmware_version.rev);
 202
 203         ps3_spu_set_platform();
 204         ps3_map_htab();
 205
 206 #ifdef CONFIG_SMP
 207         smp_init_ps3();
 208 #endif
 209
 210 #ifdef CONFIG_DUMMY_CONSOLE
 211         conswitchp = &dummy_con;
 212 #endif
 213
 214         prealloc_ps3fb_videomemory();
 215         prealloc_ps3flash_bounce_buffer();
 216
 217         ppc_md.power_save = ps3_power_save;
 218         ps3_os_area_init();
 219
 220         DBG(" <- %s:%d\n", __func__, __LINE__);
 221 }
 222
 223 static void __init ps3_progress(char *s, unsigned short hex)
 224 {
 225         printk("*** %04x : %s\n", hex, s ? s : "");
 226 }
 227
 228 static int __init ps3_probe(void)
 229 {
 230         unsigned long htab_size;
 231         unsigned long dt_root;
 232
 233         DBG(" -> %s:%d\n", __func__, __LINE__);
 234
 235         dt_root = of_get_flat_dt_root();
 236         if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
 237                 return 0;
 238
 239         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
 240
 241         ps3_os_area_save_params();
 242         ps3_mm_init();
 243         ps3_mm_vas_create(&htab_size);
 244         ps3_hpte_init(htab_size);
 245
 246         DBG(" <- %s:%d\n", __func__, __LINE__);
 247         return 1;
 248 }
 249
 250 #if defined(CONFIG_KEXEC)
 251 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
 252 {
 253         int cpu = smp_processor_id();
 254
 255         DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
 256
 257         ps3_smp_cleanup_cpu(cpu);
 258         ps3_shutdown_IRQ(cpu);
 259
 260         DBG(" <- %s:%d\n", __func__, __LINE__);
 261 }
 262 #endif
 263
 264 define_machine(ps3) {
 265         .name                           = "PS3",
 266         .probe                          = ps3_probe,
 267         .setup_arch                     = ps3_setup_arch,
 268         .init_IRQ                       = ps3_init_IRQ,
 269         .panic                          = ps3_panic,
 270         .get_boot_time                  = ps3_get_boot_time,
 271         .set_rtc_time                   = ps3_set_rtc_time,
 272         .get_rtc_time                   = ps3_get_rtc_time,
 273         .set_dabr                       = ps3_set_dabr,
 274         .calibrate_decr                 = ps3_calibrate_decr,
 275         .progress                       = ps3_progress,
 276         .restart                        = ps3_restart,
 277         .power_off                      = ps3_power_off,
 278         .halt                           = ps3_halt,
 279 #if defined(CONFIG_KEXEC)
 280         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 281         .machine_kexec                  = default_machine_kexec,
 282         .machine_kexec_prepare          = default_machine_kexec_prepare,
 283         .machine_crash_shutdown         = default_machine_crash_shutdown,
 284 #endif
 285 };