Logo Search packages:      
Sourcecode: linux version File versions

setup.c

/*
 *  PS3 platform setup routines.
 *
 *  Copyright (C) 2006 Sony Computer Entertainment Inc.
 *  Copyright 2006 Sony Corp.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; version 2 of the License.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/root_dev.h>
#include <linux/console.h>
#include <linux/kexec.h>
#include <linux/bootmem.h>

#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/time.h>
#include <asm/iommu.h>
#include <asm/udbg.h>
#include <asm/prom.h>
#include <asm/lv1call.h>

#include "platform.h"

#if defined(DEBUG)
#define DBG udbg_printf
#else
#define DBG pr_debug
#endif

#if !defined(CONFIG_SMP)
static void smp_send_stop(void) {}
#endif

static union ps3_firmware_version ps3_firmware_version;

void ps3_get_firmware_version(union ps3_firmware_version *v)
{
      *v = ps3_firmware_version;
}
EXPORT_SYMBOL_GPL(ps3_get_firmware_version);

int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
{
      union ps3_firmware_version x;

      x.pad = 0;
      x.major = major;
      x.minor = minor;
      x.rev = rev;

      return (ps3_firmware_version.raw > x.raw) -
             (ps3_firmware_version.raw < x.raw);
}
EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);

static void ps3_power_save(void)
{
      /*
       * lv1_pause() puts the PPE thread into inactive state until an
       * irq on an unmasked plug exists. MSR[EE] has no effect.
       * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
       */

      lv1_pause(0);
}

static void ps3_restart(char *cmd)
{
      DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);

      smp_send_stop();
      ps3_sys_manager_restart(); /* never returns */
}

static void ps3_power_off(void)
{
      DBG("%s:%d\n", __func__, __LINE__);

      smp_send_stop();
      ps3_sys_manager_power_off(); /* never returns */
}

static void ps3_halt(void)
{
      DBG("%s:%d\n", __func__, __LINE__);

      smp_send_stop();
      ps3_sys_manager_halt(); /* never returns */
}

static void ps3_panic(char *str)
{
      DBG("%s:%d %s\n", __func__, __LINE__, str);

      smp_send_stop();
      printk("\n");
      printk("   System does not reboot automatically.\n");
      printk("   Please press POWER button.\n");
      printk("\n");

      while(1)
            lv1_pause(1);
}

#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
    defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
static void __init prealloc(struct ps3_prealloc *p)
{
      if (!p->size)
            return;

      p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
      if (!p->address) {
            printk(KERN_ERR "%s: Cannot allocate %s\n", __func__,
                   p->name);
            return;
      }

      printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
             p->address);
}
#endif

#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
struct ps3_prealloc ps3fb_videomemory = {
      .name = "ps3fb videomemory",
      .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
      .align = 1024*1024            /* the GPU requires 1 MiB alignment */
};
EXPORT_SYMBOL_GPL(ps3fb_videomemory);
#define prealloc_ps3fb_videomemory()      prealloc(&ps3fb_videomemory)

static int __init early_parse_ps3fb(char *p)
{
      if (!p)
            return 1;

      ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
                                 ps3fb_videomemory.align);
      return 0;
}
early_param("ps3fb", early_parse_ps3fb);
#else
#define prealloc_ps3fb_videomemory()      do { } while (0)
#endif

#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
struct ps3_prealloc ps3flash_bounce_buffer = {
      .name = "ps3flash bounce buffer",
      .size = 256*1024,
      .align = 256*1024
};
EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
#define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)

static int __init early_parse_ps3flash(char *p)
{
      if (!p)
            return 1;

      if (!strcmp(p, "off"))
            ps3flash_bounce_buffer.size = 0;

      return 0;
}
early_param("ps3flash", early_parse_ps3flash);
#else
#define prealloc_ps3flash_bounce_buffer() do { } while (0)
#endif

static int ps3_set_dabr(u64 dabr)
{
      enum {DABR_USER = 1, DABR_KERNEL = 2,};

      return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
}

static void __init ps3_setup_arch(void)
{

      DBG(" -> %s:%d\n", __func__, __LINE__);

      lv1_get_version_info(&ps3_firmware_version.raw);
      printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
             ps3_firmware_version.major, ps3_firmware_version.minor,
             ps3_firmware_version.rev);

      ps3_spu_set_platform();
      ps3_map_htab();

#ifdef CONFIG_SMP
      smp_init_ps3();
#endif

#ifdef CONFIG_DUMMY_CONSOLE
      conswitchp = &dummy_con;
#endif

      prealloc_ps3fb_videomemory();
      prealloc_ps3flash_bounce_buffer();

      ppc_md.power_save = ps3_power_save;
      ps3_os_area_init();

      DBG(" <- %s:%d\n", __func__, __LINE__);
}

static void __init ps3_progress(char *s, unsigned short hex)
{
      printk("*** %04x : %s\n", hex, s ? s : "");
}

static int __init ps3_probe(void)
{
      unsigned long htab_size;
      unsigned long dt_root;

      DBG(" -> %s:%d\n", __func__, __LINE__);

      dt_root = of_get_flat_dt_root();
      if (!of_flat_dt_is_compatible(dt_root, "sony,ps3"))
            return 0;

      powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;

      ps3_os_area_save_params();
      ps3_mm_init();
      ps3_mm_vas_create(&htab_size);
      ps3_hpte_init(htab_size);

      DBG(" <- %s:%d\n", __func__, __LINE__);
      return 1;
}

#if defined(CONFIG_KEXEC)
static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
{
      int cpu = smp_processor_id();

      DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);

      ps3_smp_cleanup_cpu(cpu);
      ps3_shutdown_IRQ(cpu);

      DBG(" <- %s:%d\n", __func__, __LINE__);
}
#endif

define_machine(ps3) {
      .name                   = "PS3",
      .probe                        = ps3_probe,
      .setup_arch             = ps3_setup_arch,
      .init_IRQ               = ps3_init_IRQ,
      .panic                        = ps3_panic,
      .get_boot_time                = ps3_get_boot_time,
      .set_rtc_time                 = ps3_set_rtc_time,
      .get_rtc_time                 = ps3_get_rtc_time,
      .set_dabr               = ps3_set_dabr,
      .calibrate_decr               = ps3_calibrate_decr,
      .progress               = ps3_progress,
      .restart                = ps3_restart,
      .power_off              = ps3_power_off,
      .halt                   = ps3_halt,
#if defined(CONFIG_KEXEC)
      .kexec_cpu_down               = ps3_kexec_cpu_down,
      .machine_kexec                = default_machine_kexec,
      .machine_kexec_prepare        = default_machine_kexec_prepare,
      .machine_crash_shutdown       = default_machine_crash_shutdown,
#endif
};

Generated by  Doxygen 1.6.0   Back to index