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 }
  68 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
  69
  70 static void ps3_power_save(void)
  71 {
  72         /*
  73          * lv1_pause() puts the PPE thread into inactive state until an
  74          * irq on an unmasked plug exists. MSR[EE] has no effect.
  75          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
  76          */
  77
  78         lv1_pause(0);
  79 }
  80
  81 static void ps3_restart(char *cmd)
  82 {
  83         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
  84
  85         smp_send_stop();
  86         ps3_sys_manager_restart(); /* never returns */
  87 }
  88
  89 static void ps3_power_off(void)
  90 {
  91         DBG("%s:%d\n", __func__, __LINE__);
  92
  93         smp_send_stop();
  94         ps3_sys_manager_power_off(); /* never returns */
  95 }
  96
  97 static void ps3_panic(char *str)
  98 {
  99         DBG("%s:%d %s\n", __func__, __LINE__, str);
 100
 101         smp_send_stop();
 102         printk("\n");
 103         printk("   System does not reboot automatically.\n");
 104         printk("   Please press POWER button.\n");
 105         printk("\n");
 106
 107         while(1);
 108 }
 109
 110 #ifdef CONFIG_FB_PS3
 111 static void prealloc(struct ps3_prealloc *p)
 112 {
 113         if (!p->size)
 114                 return;
 115
 116         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
 117         if (!p->address) {
 118                 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
 119                        p->name);
 120                 return;
 121         }
 122
 123         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 124                p->address);
 125 }
 126
 127 struct ps3_prealloc ps3fb_videomemory = {
 128     .name = "ps3fb videomemory",
 129     .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 130     .align = 1024*1024                  /* the GPU requires 1 MiB alignment */
 131 };
 132 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 133
 134 static int __init early_parse_ps3fb(char *p)
 135 {
 136         if (!p)
 137                 return 1;
 138
 139         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 140                                            ps3fb_videomemory.align);
 141         return 0;
 142 }
 143 early_param("ps3fb", early_parse_ps3fb);
 144 #else
 145 #define prealloc_ps3fb_videomemory()    do { } while (0)
 146 #endif
 147
 148 static int ps3_set_dabr(u64 dabr)
 149 {
 150         enum {DABR_USER = 1, DABR_KERNEL = 2,};
 151
 152         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
 153 }
 154
 155 static void __init ps3_setup_arch(void)
 156 {
 157
 158         DBG(" -> %s:%d\n", __func__, __LINE__);
 159
 160         lv1_get_version_info(&ps3_firmware_version.raw);
 161         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
 162                ps3_firmware_version.major, ps3_firmware_version.minor,
 163                ps3_firmware_version.rev);
 164
 165         ps3_spu_set_platform();
 166         ps3_map_htab();
 167
 168 #ifdef CONFIG_SMP
 169         smp_init_ps3();
 170 #endif
 171
 172 #ifdef CONFIG_DUMMY_CONSOLE
 173         conswitchp = &dummy_con;
 174 #endif
 175
 176         prealloc_ps3fb_videomemory();
 177         ppc_md.power_save = ps3_power_save;
 178
 179         DBG(" <- %s:%d\n", __func__, __LINE__);
 180 }
 181
 182 static void __init ps3_progress(char *s, unsigned short hex)
 183 {
 184         printk("*** %04x : %s\n", hex, s ? s : "");
 185 }
 186
 187 static int __init ps3_probe(void)
 188 {
 189         unsigned long htab_size;
 190         unsigned long dt_root;
 191
 192         DBG(" -> %s:%d\n", __func__, __LINE__);
 193
 194         dt_root = of_get_flat_dt_root();
 195         if (!of_flat_dt_is_compatible(dt_root, "PS3"))
 196                 return 0;
 197
 198         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
 199
 200         ps3_os_area_init();
 201         ps3_mm_init();
 202         ps3_mm_vas_create(&htab_size);
 203         ps3_hpte_init(htab_size);
 204
 205         DBG(" <- %s:%d\n", __func__, __LINE__);
 206         return 1;
 207 }
 208
 209 #if defined(CONFIG_KEXEC)
 210 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
 211 {
 212         DBG(" -> %s:%d\n", __func__, __LINE__);
 213
 214         if (secondary) {
 215                 int cpu;
 216                 for_each_online_cpu(cpu)
 217                         if (cpu)
 218                                 ps3_smp_cleanup_cpu(cpu);
 219         } else
 220                 ps3_smp_cleanup_cpu(0);
 221
 222         DBG(" <- %s:%d\n", __func__, __LINE__);
 223 }
 224
 225 static void ps3_machine_kexec(struct kimage *image)
 226 {
 227         unsigned long ppe_id;
 228
 229         DBG(" -> %s:%d\n", __func__, __LINE__);
 230
 231         lv1_get_logical_ppe_id(&ppe_id);
 232         lv1_configure_irq_state_bitmap(ppe_id, 0, 0);
 233         ps3_mm_shutdown();
 234         ps3_mm_vas_destroy();
 235
 236         default_machine_kexec(image);
 237
 238         DBG(" <- %s:%d\n", __func__, __LINE__);
 239 }
 240 #endif
 241
 242 define_machine(ps3) {
 243         .name                           = "PS3",
 244         .probe                          = ps3_probe,
 245         .setup_arch                     = ps3_setup_arch,
 246         .init_IRQ                       = ps3_init_IRQ,
 247         .panic                          = ps3_panic,
 248         .get_boot_time                  = ps3_get_boot_time,
 249         .set_rtc_time                   = ps3_set_rtc_time,
 250         .get_rtc_time                   = ps3_get_rtc_time,
 251         .set_dabr                       = ps3_set_dabr,
 252         .calibrate_decr                 = ps3_calibrate_decr,
 253         .progress                       = ps3_progress,
 254         .restart                        = ps3_restart,
 255         .power_off                      = ps3_power_off,
 256 #if defined(CONFIG_KEXEC)
 257         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 258         .machine_kexec                  = ps3_machine_kexec,
 259         .machine_kexec_prepare          = default_machine_kexec_prepare,
 260         .machine_crash_shutdown         = default_machine_crash_shutdown,
 261 #endif
 262 };