arch/powerpc/platforms/ps3/setup.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  PS3 platform setup routines.
   4  *
   5  *  Copyright (C) 2006 Sony Computer Entertainment Inc.
   6  *  Copyright 2006 Sony Corp.
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/delay.h>
  11 #include <linux/fs.h>
  12 #include <linux/root_dev.h>
  13 #include <linux/console.h>
  14 #include <linux/export.h>
  15 #include <linux/memblock.h>
  16
  17 #include <asm/machdep.h>
  18 #include <asm/firmware.h>
  19 #include <asm/time.h>
  20 #include <asm/iommu.h>
  21 #include <asm/udbg.h>
  22 #include <asm/prom.h>
  23 #include <asm/lv1call.h>
  24 #include <asm/ps3gpu.h>
  25
  26 #include "platform.h"
  27
  28 #if defined(DEBUG)
  29 #define DBG udbg_printf
  30 #else
  31 #define DBG pr_debug
  32 #endif
  33
  34 /* mutex synchronizing GPU accesses and video mode changes */
  35 DEFINE_MUTEX(ps3_gpu_mutex);
  36 EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
  37
  38 static union ps3_firmware_version ps3_firmware_version;
  39
  40 void ps3_get_firmware_version(union ps3_firmware_version *v)
  41 {
  42         *v = ps3_firmware_version;
  43 }
  44 EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
  45
  46 int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
  47 {
  48         union ps3_firmware_version x;
  49
  50         x.pad = 0;
  51         x.major = major;
  52         x.minor = minor;
  53         x.rev = rev;
  54
  55         return (ps3_firmware_version.raw > x.raw) -
  56                (ps3_firmware_version.raw < x.raw);
  57 }
  58 EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
  59
  60 static void ps3_power_save(void)
  61 {
  62         /*
  63          * lv1_pause() puts the PPE thread into inactive state until an
  64          * irq on an unmasked plug exists. MSR[EE] has no effect.
  65          * flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
  66          */
  67
  68         lv1_pause(0);
  69 }
  70
  71 static void __noreturn ps3_restart(char *cmd)
  72 {
  73         DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
  74
  75         smp_send_stop();
  76         ps3_sys_manager_restart(); /* never returns */
  77 }
  78
  79 static void ps3_power_off(void)
  80 {
  81         DBG("%s:%d\n", __func__, __LINE__);
  82
  83         smp_send_stop();
  84         ps3_sys_manager_power_off(); /* never returns */
  85 }
  86
  87 static void __noreturn ps3_halt(void)
  88 {
  89         DBG("%s:%d\n", __func__, __LINE__);
  90
  91         smp_send_stop();
  92         ps3_sys_manager_halt(); /* never returns */
  93 }
  94
  95 static void ps3_panic(char *str)
  96 {
  97         DBG("%s:%d %s\n", __func__, __LINE__, str);
  98
  99         smp_send_stop();
 100         printk("\n");
 101         printk("   System does not reboot automatically.\n");
 102         printk("   Please press POWER button.\n");
 103         printk("\n");
 104         panic_flush_kmsg_end();
 105
 106         while(1)
 107                 lv1_pause(1);
 108 }
 109
 110 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
 111     defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 112 static void __init prealloc(struct ps3_prealloc *p)
 113 {
 114         if (!p->size)
 115                 return;
 116
 117         p->address = memblock_alloc(p->size, p->align);
 118         if (!p->address)
 119                 panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
 120                       __func__, p->size, p->align);
 121
 122         printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
 123                p->address);
 124 }
 125 #endif
 126
 127 #if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
 128 struct ps3_prealloc ps3fb_videomemory = {
 129         .name = "ps3fb videomemory",
 130         .size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
 131         .align = 1024*1024              /* the GPU requires 1 MiB alignment */
 132 };
 133 EXPORT_SYMBOL_GPL(ps3fb_videomemory);
 134 #define prealloc_ps3fb_videomemory()    prealloc(&ps3fb_videomemory)
 135
 136 static int __init early_parse_ps3fb(char *p)
 137 {
 138         if (!p)
 139                 return 1;
 140
 141         ps3fb_videomemory.size = _ALIGN_UP(memparse(p, &p),
 142                                            ps3fb_videomemory.align);
 143         return 0;
 144 }
 145 early_param("ps3fb", early_parse_ps3fb);
 146 #else
 147 #define prealloc_ps3fb_videomemory()    do { } while (0)
 148 #endif
 149
 150 #if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
 151 struct ps3_prealloc ps3flash_bounce_buffer = {
 152         .name = "ps3flash bounce buffer",
 153         .size = 256*1024,
 154         .align = 256*1024
 155 };
 156 EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
 157 #define prealloc_ps3flash_bounce_buffer()       prealloc(&ps3flash_bounce_buffer)
 158
 159 static int __init early_parse_ps3flash(char *p)
 160 {
 161         if (!p)
 162                 return 1;
 163
 164         if (!strcmp(p, "off"))
 165                 ps3flash_bounce_buffer.size = 0;
 166
 167         return 0;
 168 }
 169 early_param("ps3flash", early_parse_ps3flash);
 170 #else
 171 #define prealloc_ps3flash_bounce_buffer()       do { } while (0)
 172 #endif
 173
 174 static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx)
 175 {
 176         /* Have to set at least one bit in the DABRX */
 177         if (dabrx == 0 && dabr == 0)
 178                 dabrx = DABRX_USER;
 179         /* hypervisor only allows us to set BTI, Kernel and user */
 180         dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER;
 181
 182         return lv1_set_dabr(dabr, dabrx) ? -1 : 0;
 183 }
 184
 185 static void __init ps3_setup_arch(void)
 186 {
 187         u64 tmp;
 188
 189         DBG(" -> %s:%d\n", __func__, __LINE__);
 190
 191         lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
 192
 193         printk(KERN_INFO "PS3 firmware version %u.%u.%u\n",
 194                ps3_firmware_version.major, ps3_firmware_version.minor,
 195                ps3_firmware_version.rev);
 196
 197         ps3_spu_set_platform();
 198
 199 #ifdef CONFIG_SMP
 200         smp_init_ps3();
 201 #endif
 202
 203 #ifdef CONFIG_DUMMY_CONSOLE
 204         conswitchp = &dummy_con;
 205 #endif
 206
 207         prealloc_ps3fb_videomemory();
 208         prealloc_ps3flash_bounce_buffer();
 209
 210         ppc_md.power_save = ps3_power_save;
 211         ps3_os_area_init();
 212
 213         DBG(" <- %s:%d\n", __func__, __LINE__);
 214 }
 215
 216 static void __init ps3_progress(char *s, unsigned short hex)
 217 {
 218         printk("*** %04x : %s\n", hex, s ? s : "");
 219 }
 220
 221 void __init ps3_early_mm_init(void)
 222 {
 223         unsigned long htab_size;
 224
 225         ps3_mm_init();
 226         ps3_mm_vas_create(&htab_size);
 227         ps3_hpte_init(htab_size);
 228 }
 229
 230 static int __init ps3_probe(void)
 231 {
 232         DBG(" -> %s:%d\n", __func__, __LINE__);
 233
 234         if (!of_machine_is_compatible("sony,ps3"))
 235                 return 0;
 236
 237         ps3_os_area_save_params();
 238
 239         pm_power_off = ps3_power_off;
 240
 241         DBG(" <- %s:%d\n", __func__, __LINE__);
 242         return 1;
 243 }
 244
 245 #if defined(CONFIG_KEXEC_CORE)
 246 static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
 247 {
 248         int cpu = smp_processor_id();
 249
 250         DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
 251
 252         ps3_smp_cleanup_cpu(cpu);
 253         ps3_shutdown_IRQ(cpu);
 254
 255         DBG(" <- %s:%d\n", __func__, __LINE__);
 256 }
 257 #endif
 258
 259 define_machine(ps3) {
 260         .name                           = "PS3",
 261         .probe                          = ps3_probe,
 262         .setup_arch                     = ps3_setup_arch,
 263         .init_IRQ                       = ps3_init_IRQ,
 264         .panic                          = ps3_panic,
 265         .get_boot_time                  = ps3_get_boot_time,
 266         .set_dabr                       = ps3_set_dabr,
 267         .calibrate_decr                 = ps3_calibrate_decr,
 268         .progress                       = ps3_progress,
 269         .restart                        = ps3_restart,
 270         .halt                           = ps3_halt,
 271 #if defined(CONFIG_KEXEC_CORE)
 272         .kexec_cpu_down                 = ps3_kexec_cpu_down,
 273 #endif
 274 };