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_panic(char *str)
  99 {
 100         DBG("%s:%d %s\n", __func__, __LINE__, str);
 101
 102         smp_send_stop();
 103         printk("\n");
 104         printk("   System does not reboot automatically.\n");
 105         printk("   Please press POWER button.\n");
 106         printk("\n");
 107
 108         while(1);
 109 }
 110
 111 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
 112     defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 113 static void __init prealloc(struct ps3_prealloc *p)
 114 {
 115         if (!p->size)
 116                 return;
 117
 118         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
 119         if (!p->address) {
 120                 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
 121                        p->name);
 122                 return;
 123         }
 124
 125         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 126                p->address);
 127 }
 128 #endif
 129
 130 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
 131 struct ps3_prealloc ps3fb_videomemory = {
 132         .name = "ps3fb videomemory",
 133         .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 134         .align = 1024*1024              /* the GPU requires 1 MiB alignment */
 135 };
 136 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
 137 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 138
 139 static int __init early_parse_ps3fb(char *p)
 140 {
 141         if (!p)
 142                 return 1;
 143
 144         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 145                                            ps3fb_videomemory.align);
 146         return 0;
 147 }
 148 early_param("ps3fb", early_parse_ps3fb);
 149 #else
 150 #define prealloc_ps3fb_videomemory()    do { } while (0)
 151 #endif
 152
 153 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 154 struct ps3_prealloc ps3flash_bounce_buffer = {
 155         .name = "ps3flash bounce buffer",
 156         .size = 256*1024,
 157         .align = 256*1024
 158 };
 159 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
 160 #define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
 161
 162 static int __init early_parse_ps3flash(char *p)
 163 {
 164         if (!p)
 165                 return 1;
 166
 167         if (!strcmp(p, "off"))
 168                 ps3flash_bounce_buffer.size = 0;
 169
 170         return 0;
 171 }
 172 early_param("ps3flash", early_parse_ps3flash);
 173 #else
 174 #define prealloc_ps3flash_bounce_buffer()       do { } while (0)
 175 #endif
 176
 177 static int ps3_set_dabr(u64 dabr)
 178 {
 179         enum {DABR_USER = 1, DABR_KERNEL = 2,};
 180
 181         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
 182 }
 183
 184 static void __init ps3_setup_arch(void)
 185 {
 186
 187         DBG(" -> %s:%d\n", __func__, __LINE__);
 188
 189         lv1_get_version_info(&ps3_firmware_version.raw);
 190         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
 191                ps3_firmware_version.major, ps3_firmware_version.minor,
 192                ps3_firmware_version.rev);
 193
 194         ps3_spu_set_platform();
 195         ps3_map_htab();
 196
 197 #ifdef CONFIG_SMP
 198         smp_init_ps3();
 199 #endif
 200
 201 #ifdef CONFIG_DUMMY_CONSOLE
 202         conswitchp = &dummy_con;
 203 #endif
 204
 205         prealloc_ps3fb_videomemory();
 206         prealloc_ps3flash_bounce_buffer();
 207
 208         ppc_md.power_save = ps3_power_save;
 209         ps3_os_area_init();
 210
 211         DBG(" <- %s:%d\n", __func__, __LINE__);
 212 }
 213
 214 static void __init ps3_progress(char *s, unsigned short hex)
 215 {
 216         printk("*** %04x : %s\n", hex, s ? s : "");
 217 }
 218
 219 static int __init ps3_probe(void)
 220 {
 221         unsigned long htab_size;
 222         unsigned long dt_root;
 223
 224         DBG(" -> %s:%d\n", __func__, __LINE__);
 225
 226         dt_root = of_get_flat_dt_root();
 227         if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
 228                 return 0;
 229
 230         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
 231
 232         ps3_os_area_save_params();
 233         ps3_mm_init();
 234         ps3_mm_vas_create(&htab_size);
 235         ps3_hpte_init(htab_size);
 236
 237         DBG(" <- %s:%d\n", __func__, __LINE__);
 238         return 1;
 239 }
 240
 241 #if defined(CONFIG_KEXEC)
 242 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
 243 {
 244         int cpu = smp_processor_id();
 245
 246         DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
 247
 248         ps3_smp_cleanup_cpu(cpu);
 249         ps3_shutdown_IRQ(cpu);
 250
 251         DBG(" <- %s:%d\n", __func__, __LINE__);
 252 }
 253 #endif
 254
 255 define_machine(ps3) {
 256         .name                           = "PS3",
 257         .probe                          = ps3_probe,
 258         .setup_arch                     = ps3_setup_arch,
 259         .init_IRQ                       = ps3_init_IRQ,
 260         .panic                          = ps3_panic,
 261         .get_boot_time                  = ps3_get_boot_time,
 262         .set_rtc_time                   = ps3_set_rtc_time,
 263         .get_rtc_time                   = ps3_get_rtc_time,
 264         .set_dabr                       = ps3_set_dabr,
 265         .calibrate_decr                 = ps3_calibrate_decr,
 266         .progress                       = ps3_progress,
 267         .restart                        = ps3_restart,
 268         .power_off                      = ps3_power_off,
 269 #if defined(CONFIG_KEXEC)
 270         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 271         .machine_kexec                  = default_machine_kexec,
 272         .machine_kexec_prepare          = default_machine_kexec_prepare,
 273         .machine_crash_shutdown         = default_machine_crash_shutdown,
 274 #endif
 275 };