b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | }; |