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(fmt...) udbg_printf(fmt)
  41 #else
  42 #define DBG(fmt...) do{if(0)printk(fmt);}while(0)
  43 #endif
  44
  45 #if !defined(CONFIG_SMP)
  46 static void smp_send_stop(void) {}
  47 #endif
  48
  49 int ps3_get_firmware_version(union ps3_firmware_version *v)
  50 {
  51         int result = lv1_get_version_info(&v->raw);
  52
  53         if (result) {
  54                 v->raw = 0;
  55                 return -1;
  56         }
  57
  58         return result;
  59 }
  60 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
  61
  62 static void ps3_power_save(void)
  63 {
  64         /*
  65          * lv1_pause() puts the PPE thread into inactive state until an
  66          * irq on an unmasked plug exists. MSR[EE] has no effect.
  67          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
  68          */
  69
  70         lv1_pause(0);
  71 }
  72
  73 static void ps3_restart(char *cmd)
  74 {
  75         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
  76
  77         smp_send_stop();
  78         ps3_sys_manager_restart(); /* never returns */
  79 }
  80
  81 static void ps3_power_off(void)
  82 {
  83         DBG("%s:%d\n", __func__, __LINE__);
  84
  85         smp_send_stop();
  86         ps3_sys_manager_power_off(); /* never returns */
  87 }
  88
  89 static void ps3_panic(char *str)
  90 {
  91         DBG("%s:%d %s\n", __func__, __LINE__, str);
  92
  93         smp_send_stop();
  94         printk("\n");
  95         printk("   System does not reboot automatically.\n");
  96         printk("   Please press POWER button.\n");
  97         printk("\n");
  98
  99         while(1);
 100 }
 101
 102 static void prealloc(struct ps3_prealloc *p)
 103 {
 104         if (!p->size)
 105                 return;
 106
 107         p->address = __alloc_bootmem(p->size, p->align, __pa(MAX_DMA_ADDRESS));
 108         if (!p->address) {
 109                 printk(KERN_ERR "%s: Cannot allocate %s\n", __FUNCTION__,
 110                        p->name);
 111                 return;
 112         }
 113
 114         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 115                p->address);
 116 }
 117
 118 #ifdef CONFIG_FB_PS3
 119 struct ps3_prealloc ps3fb_videomemory = {
 120     .name = "ps3fb videomemory",
 121     .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 122     .align = 1024*1024                  /* the GPU requires 1 MiB alignment */
 123 };
 124 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 125
 126 static int __init early_parse_ps3fb(char *p)
 127 {
 128         if (!p)
 129                 return 1;
 130
 131         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 132                                            ps3fb_videomemory.align);
 133         return 0;
 134 }
 135 early_param("ps3fb", early_parse_ps3fb);
 136 #else
 137 #define prealloc_ps3fb_videomemory()    do { } while (0)
 138 #endif
 139
 140 static int ps3_set_dabr(u64 dabr)
 141 {
 142         enum {DABR_USER = 1, DABR_KERNEL = 2,};
 143
 144         return lv1_set_dabr(dabr, DABR_KERNEL | DABR_USER) ? -1 : 0;
 145 }
 146
 147 static void __init ps3_setup_arch(void)
 148 {
 149         union ps3_firmware_version v;
 150
 151         DBG(" -> %s:%d\n", __func__, __LINE__);
 152
 153         ps3_get_firmware_version(&v);
 154         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n", v.major, v.minor,
 155                 v.rev);
 156
 157         ps3_spu_set_platform();
 158         ps3_map_htab();
 159
 160 #ifdef CONFIG_SMP
 161         smp_init_ps3();
 162 #endif
 163
 164 #ifdef CONFIG_DUMMY_CONSOLE
 165         conswitchp = &dummy_con;
 166 #endif
 167
 168         prealloc_ps3fb_videomemory();
 169         ppc_md.power_save = ps3_power_save;
 170
 171         DBG(" <- %s:%d\n", __func__, __LINE__);
 172 }
 173
 174 static void __init ps3_progress(char *s, unsigned short hex)
 175 {
 176         printk("*** %04x : %s\n", hex, s ? s : "");
 177 }
 178
 179 static int __init ps3_probe(void)
 180 {
 181         unsigned long htab_size;
 182         unsigned long dt_root;
 183
 184         DBG(" -> %s:%d\n", __func__, __LINE__);
 185
 186         dt_root = of_get_flat_dt_root();
 187         if (!of_flat_dt_is_compatible(dt_root, "PS3"))
 188                 return 0;
 189
 190         powerpc_firmware_features |= FW_FEATURE_PS3_POSSIBLE;
 191
 192         ps3_os_area_init();
 193         ps3_mm_init();
 194         ps3_mm_vas_create(&htab_size);
 195         ps3_hpte_init(htab_size);
 196
 197         DBG(" <- %s:%d\n", __func__, __LINE__);
 198         return 1;
 199 }
 200
 201 #if defined(CONFIG_KEXEC)
 202 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
 203 {
 204         DBG(" -> %s:%d\n", __func__, __LINE__);
 205
 206         if (secondary) {
 207                 int cpu;
 208                 for_each_online_cpu(cpu)
 209                         if (cpu)
 210                                 ps3_smp_cleanup_cpu(cpu);
 211         } else
 212                 ps3_smp_cleanup_cpu(0);
 213
 214         DBG(" <- %s:%d\n", __func__, __LINE__);
 215 }
 216
 217 static void ps3_machine_kexec(struct kimage *image)
 218 {
 219         unsigned long ppe_id;
 220
 221         DBG(" -> %s:%d\n", __func__, __LINE__);
 222
 223         lv1_get_logical_ppe_id(&ppe_id);
 224         lv1_configure_irq_state_bitmap(ppe_id, 0, 0);
 225         ps3_mm_shutdown();
 226         ps3_mm_vas_destroy();
 227
 228         default_machine_kexec(image);
 229
 230         DBG(" <- %s:%d\n", __func__, __LINE__);
 231 }
 232 #endif
 233
 234 define_machine(ps3) {
 235         .name                           = "PS3",
 236         .probe                          = ps3_probe,
 237         .setup_arch                     = ps3_setup_arch,
 238         .init_IRQ                       = ps3_init_IRQ,
 239         .panic                          = ps3_panic,
 240         .get_boot_time                  = ps3_get_boot_time,
 241         .set_rtc_time                   = ps3_set_rtc_time,
 242         .get_rtc_time                   = ps3_get_rtc_time,
 243         .set_dabr                       = ps3_set_dabr,
 244         .calibrate_decr                 = ps3_calibrate_decr,
 245         .progress                       = ps3_progress,
 246         .restart                        = ps3_restart,
 247         .power_off                      = ps3_power_off,
 248 #if defined(CONFIG_KEXEC)
 249         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 250         .machine_kexec                  = ps3_machine_kexec,
 251         .machine_kexec_prepare          = default_machine_kexec_prepare,
 252         .machine_crash_shutdown         = default_machine_crash_shutdown,
 253 #endif
 254 };