linux/arch/powerpc/platforms/ps3/setup.c
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   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 */
  47DEFINE_MUTEX(ps3_gpu_mutex);
  48EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
  49
  50static union ps3_firmware_version ps3_firmware_version;
  51
  52void ps3_get_firmware_version(union ps3_firmware_version *v)
  53{
  54        *v = ps3_firmware_version;
  55}
  56EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
  57
  58int 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}
  70EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
  71
  72static 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
  83static 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
  91static 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
  99static 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
 107static 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)
 123static void __init prealloc(struct ps3_prealloc *p)
 124{
 125        if (!p->size)
 126                return;
 127
 128        p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
 129        if (!p->address) {
 130                printk(KERN_ERR "%s: Cannot allocate %s\n", __func__,
 131                       p->name);
 132                return;
 133        }
 134
 135        printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 136               p->address);
 137}
 138#endif
 139
 140#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
 141struct ps3_prealloc ps3fb_videomemory = {
 142        .name = "ps3fb videomemory",
 143        .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 144        .align = 1024*1024              /* the GPU requires 1 MiB alignment */
 145};
 146EXPORT_SYMBOL_GPL(ps3fb_videomemory);
 147#define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 148
 149static int __init early_parse_ps3fb(char *p)
 150{
 151        if (!p)
 152                return 1;
 153
 154        ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 155                                           ps3fb_videomemory.align);
 156        return 0;
 157}
 158early_param("ps3fb", early_parse_ps3fb);
 159#else
 160#define prealloc_ps3fb_videomemory()    do { } while (0)
 161#endif
 162
 163#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 164struct ps3_prealloc ps3flash_bounce_buffer = {
 165        .name = "ps3flash bounce buffer",
 166        .size = 256*1024,
 167        .align = 256*1024
 168};
 169EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
 170#define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
 171
 172static int __init early_parse_ps3flash(char *p)
 173{
 174        if (!p)
 175                return 1;
 176
 177        if (!strcmp(p, "off"))
 178                ps3flash_bounce_buffer.size = 0;
 179
 180        return 0;
 181}
 182early_param("ps3flash", early_parse_ps3flash);
 183#else
 184#define prealloc_ps3flash_bounce_buffer()       do { } while (0)
 185#endif
 186
 187static int ps3_set_dabr(unsigned long dabr)
 188{
 189        enum {DABR_USER = 1, DABR_KERNEL = 2,};
 190
 191        return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
 192}
 193
 194static void __init ps3_setup_arch(void)
 195{
 196        u64 tmp;
 197
 198        DBG(" -> %s:%d\n", __func__, __LINE__);
 199
 200        lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
 201
 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
 225static void __init ps3_progress(char *s, unsigned short hex)
 226{
 227        printk("*** %04x : %s\n", hex, s ? s : "");
 228}
 229
 230static 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)
 253static 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
 266define_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        .power_off                      = ps3_power_off,
 278        .halt                           = ps3_halt,
 279#if defined(CONFIG_KEXEC)
 280        .kexec_cpu_down                 = ps3_kexec_cpu_down,
 281#endif
 282};
 283