Adrian Bunk | b00dc83 | 2008-05-19 16:52:27 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * linux/arch/sparc64/kernel/setup.c |
| 3 | * |
| 4 | * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) |
| 5 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 6 | */ |
| 7 | |
| 8 | #include <linux/errno.h> |
| 9 | #include <linux/sched.h> |
| 10 | #include <linux/kernel.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/stddef.h> |
| 13 | #include <linux/unistd.h> |
| 14 | #include <linux/ptrace.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <asm/smp.h> |
| 16 | #include <linux/user.h> |
Jon Smirl | 894673e | 2006-07-10 04:44:13 -0700 | [diff] [blame] | 17 | #include <linux/screen_info.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/delay.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/fs.h> |
| 20 | #include <linux/seq_file.h> |
| 21 | #include <linux/syscalls.h> |
| 22 | #include <linux/kdev_t.h> |
| 23 | #include <linux/major.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/inet.h> |
| 27 | #include <linux/console.h> |
| 28 | #include <linux/root_dev.h> |
| 29 | #include <linux/interrupt.h> |
| 30 | #include <linux/cpu.h> |
| 31 | #include <linux/initrd.h> |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 32 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <asm/io.h> |
| 35 | #include <asm/processor.h> |
| 36 | #include <asm/oplib.h> |
| 37 | #include <asm/page.h> |
| 38 | #include <asm/pgtable.h> |
| 39 | #include <asm/idprom.h> |
| 40 | #include <asm/head.h> |
| 41 | #include <asm/starfire.h> |
| 42 | #include <asm/mmu_context.h> |
| 43 | #include <asm/timer.h> |
| 44 | #include <asm/sections.h> |
| 45 | #include <asm/setup.h> |
| 46 | #include <asm/mmu.h> |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 47 | #include <asm/ns87303.h> |
David S. Miller | c57ec52 | 2009-11-27 17:33:43 -0800 | [diff] [blame] | 48 | #include <asm/btext.h> |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 49 | #include <asm/elf.h> |
| 50 | #include <asm/mdesc.h> |
David Howells | d550bbd | 2012-03-28 18:30:03 +0100 | [diff] [blame] | 51 | #include <asm/cacheflush.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | #ifdef CONFIG_IP_PNP |
| 54 | #include <net/ipconfig.h> |
| 55 | #endif |
| 56 | |
David S. Miller | 3d5ae6b | 2008-03-25 21:51:40 -0700 | [diff] [blame] | 57 | #include "entry.h" |
Sam Ravnborg | 53ae341 | 2008-12-07 00:02:08 -0800 | [diff] [blame] | 58 | #include "kernel.h" |
David S. Miller | 3d5ae6b | 2008-03-25 21:51:40 -0700 | [diff] [blame] | 59 | |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 60 | /* Used to synchronize accesses to NatSemi SUPER I/O chip configure |
| 61 | * operations in asm/ns87303.h |
| 62 | */ |
| 63 | DEFINE_SPINLOCK(ns87303_lock); |
Sam Ravnborg | 917c366 | 2009-01-08 16:58:20 -0800 | [diff] [blame] | 64 | EXPORT_SYMBOL(ns87303_lock); |
David S. Miller | 5cbc307 | 2007-05-25 15:49:59 -0700 | [diff] [blame] | 65 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | struct screen_info screen_info = { |
| 67 | 0, 0, /* orig-x, orig-y */ |
| 68 | 0, /* unused */ |
| 69 | 0, /* orig-video-page */ |
| 70 | 0, /* orig-video-mode */ |
| 71 | 128, /* orig-video-cols */ |
| 72 | 0, 0, 0, /* unused, ega_bx, unused */ |
| 73 | 54, /* orig-video-lines */ |
| 74 | 0, /* orig-video-isVGA */ |
| 75 | 16 /* orig-video-points */ |
| 76 | }; |
| 77 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | static void |
| 79 | prom_console_write(struct console *con, const char *s, unsigned n) |
| 80 | { |
| 81 | prom_write(s, n); |
| 82 | } |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | /* Exported for mm/init.c:paging_init. */ |
| 85 | unsigned long cmdline_memory_size = 0; |
| 86 | |
David S. Miller | 3c62a2d | 2008-02-17 23:22:50 -0800 | [diff] [blame] | 87 | static struct console prom_early_console = { |
| 88 | .name = "earlyprom", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | .write = prom_console_write, |
David S. Miller | db9a7fb | 2008-04-23 22:22:29 -0700 | [diff] [blame] | 90 | .flags = CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | .index = -1, |
| 92 | }; |
| 93 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | /* |
| 95 | * Process kernel command line switches that are specific to the |
| 96 | * SPARC or that require special low-level processing. |
| 97 | */ |
| 98 | static void __init process_switch(char c) |
| 99 | { |
| 100 | switch (c) { |
| 101 | case 'd': |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | case 's': |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | break; |
| 104 | case 'h': |
| 105 | prom_printf("boot_flags_init: Halt!\n"); |
| 106 | prom_halt(); |
| 107 | break; |
| 108 | case 'p': |
David S. Miller | 11032c1 | 2011-09-21 12:48:06 -0700 | [diff] [blame] | 109 | prom_early_console.flags &= ~CON_BOOT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | break; |
David S. Miller | 816242d | 2005-05-23 15:52:08 -0700 | [diff] [blame] | 111 | case 'P': |
| 112 | /* Force UltraSPARC-III P-Cache on. */ |
| 113 | if (tlb_type != cheetah) { |
| 114 | printk("BOOT: Ignoring P-Cache force option.\n"); |
| 115 | break; |
| 116 | } |
| 117 | cheetah_pcache_forced_on = 1; |
Rusty Russell | 373d4d0 | 2013-01-21 17:17:39 +1030 | [diff] [blame] | 118 | add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE); |
David S. Miller | 816242d | 2005-05-23 15:52:08 -0700 | [diff] [blame] | 119 | cheetah_enable_pcache(); |
| 120 | break; |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | default: |
| 123 | printk("Unknown boot switch (-%c)\n", c); |
| 124 | break; |
| 125 | } |
| 126 | } |
| 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | static void __init boot_flags_init(char *commands) |
| 129 | { |
| 130 | while (*commands) { |
| 131 | /* Move to the start of the next "argument". */ |
| 132 | while (*commands && *commands == ' ') |
| 133 | commands++; |
| 134 | |
| 135 | /* Process any command switches, otherwise skip it. */ |
| 136 | if (*commands == '\0') |
| 137 | break; |
| 138 | if (*commands == '-') { |
| 139 | commands++; |
| 140 | while (*commands && *commands != ' ') |
| 141 | process_switch(*commands++); |
| 142 | continue; |
| 143 | } |
David S. Miller | c73fcc8 | 2007-07-20 16:59:26 -0700 | [diff] [blame] | 144 | if (!strncmp(commands, "mem=", 4)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | /* |
| 146 | * "mem=XXX[kKmM]" overrides the PROM-reported |
| 147 | * memory size. |
| 148 | */ |
| 149 | cmdline_memory_size = simple_strtoul(commands + 4, |
| 150 | &commands, 0); |
| 151 | if (*commands == 'K' || *commands == 'k') { |
| 152 | cmdline_memory_size <<= 10; |
| 153 | commands++; |
| 154 | } else if (*commands=='M' || *commands=='m') { |
| 155 | cmdline_memory_size <<= 20; |
| 156 | commands++; |
| 157 | } |
| 158 | } |
| 159 | while (*commands && *commands != ' ') |
| 160 | commands++; |
| 161 | } |
| 162 | } |
| 163 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | extern unsigned short root_flags; |
| 165 | extern unsigned short root_dev; |
| 166 | extern unsigned short ram_flags; |
| 167 | #define RAMDISK_IMAGE_START_MASK 0x07FF |
| 168 | #define RAMDISK_PROMPT_FLAG 0x8000 |
| 169 | #define RAMDISK_LOAD_FLAG 0x4000 |
| 170 | |
| 171 | extern int root_mountflags; |
| 172 | |
| 173 | char reboot_command[COMMAND_LINE_SIZE]; |
| 174 | |
| 175 | static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; |
| 176 | |
David S. Miller | 951bc82 | 2006-05-31 01:24:02 -0700 | [diff] [blame] | 177 | void __init per_cpu_patch(void) |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 178 | { |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 179 | struct cpuid_patch_entry *p; |
| 180 | unsigned long ver; |
| 181 | int is_jbus; |
| 182 | |
| 183 | if (tlb_type == spitfire && !this_is_starfire) |
| 184 | return; |
| 185 | |
David S. Miller | d82ace7 | 2006-02-09 02:52:44 -0800 | [diff] [blame] | 186 | is_jbus = 0; |
| 187 | if (tlb_type != hypervisor) { |
| 188 | __asm__ ("rdpr %%ver, %0" : "=r" (ver)); |
David S. Miller | ebd8c56 | 2006-02-17 08:38:06 -0800 | [diff] [blame] | 189 | is_jbus = ((ver >> 32UL) == __JALAPENO_ID || |
| 190 | (ver >> 32UL) == __SERRANO_ID); |
David S. Miller | d82ace7 | 2006-02-09 02:52:44 -0800 | [diff] [blame] | 191 | } |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 192 | |
| 193 | p = &__cpuid_patch; |
| 194 | while (p < &__cpuid_patch_end) { |
| 195 | unsigned long addr = p->addr; |
| 196 | unsigned int *insns; |
| 197 | |
| 198 | switch (tlb_type) { |
| 199 | case spitfire: |
| 200 | insns = &p->starfire[0]; |
| 201 | break; |
| 202 | case cheetah: |
| 203 | case cheetah_plus: |
| 204 | if (is_jbus) |
| 205 | insns = &p->cheetah_jbus[0]; |
| 206 | else |
| 207 | insns = &p->cheetah_safari[0]; |
| 208 | break; |
David S. Miller | d96b815 | 2006-02-04 15:40:53 -0800 | [diff] [blame] | 209 | case hypervisor: |
| 210 | insns = &p->sun4v[0]; |
| 211 | break; |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 212 | default: |
| 213 | prom_printf("Unknown cpu type, halting.\n"); |
| 214 | prom_halt(); |
Joe Perches | 6cb79b3 | 2011-06-03 14:45:23 +0000 | [diff] [blame] | 215 | } |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 216 | |
| 217 | *(unsigned int *) (addr + 0) = insns[0]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 218 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 219 | __asm__ __volatile__("flush %0" : : "r" (addr + 0)); |
| 220 | |
| 221 | *(unsigned int *) (addr + 4) = insns[1]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 222 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 223 | __asm__ __volatile__("flush %0" : : "r" (addr + 4)); |
| 224 | |
| 225 | *(unsigned int *) (addr + 8) = insns[2]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 226 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 227 | __asm__ __volatile__("flush %0" : : "r" (addr + 8)); |
| 228 | |
| 229 | *(unsigned int *) (addr + 12) = insns[3]; |
David S. Miller | 840aaef | 2006-02-06 15:52:05 -0800 | [diff] [blame] | 230 | wmb(); |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 231 | __asm__ __volatile__("flush %0" : : "r" (addr + 12)); |
| 232 | |
| 233 | p++; |
| 234 | } |
David S. Miller | 92704a1 | 2006-02-26 23:27:19 -0800 | [diff] [blame] | 235 | } |
| 236 | |
David S. Miller | 0b64120 | 2011-11-17 22:44:58 -0800 | [diff] [blame] | 237 | void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *start, |
| 238 | struct sun4v_1insn_patch_entry *end) |
| 239 | { |
| 240 | while (start < end) { |
| 241 | unsigned long addr = start->addr; |
| 242 | |
| 243 | *(unsigned int *) (addr + 0) = start->insn; |
| 244 | wmb(); |
| 245 | __asm__ __volatile__("flush %0" : : "r" (addr + 0)); |
| 246 | |
| 247 | start++; |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start, |
| 252 | struct sun4v_2insn_patch_entry *end) |
| 253 | { |
| 254 | while (start < end) { |
| 255 | unsigned long addr = start->addr; |
| 256 | |
| 257 | *(unsigned int *) (addr + 0) = start->insns[0]; |
| 258 | wmb(); |
| 259 | __asm__ __volatile__("flush %0" : : "r" (addr + 0)); |
| 260 | |
| 261 | *(unsigned int *) (addr + 4) = start->insns[1]; |
| 262 | wmb(); |
| 263 | __asm__ __volatile__("flush %0" : : "r" (addr + 4)); |
| 264 | |
| 265 | start++; |
| 266 | } |
| 267 | } |
| 268 | |
David S. Miller | 951bc82 | 2006-05-31 01:24:02 -0700 | [diff] [blame] | 269 | void __init sun4v_patch(void) |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 270 | { |
David S. Miller | c7754d4 | 2007-05-15 17:03:54 -0700 | [diff] [blame] | 271 | extern void sun4v_hvapi_init(void); |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 272 | |
| 273 | if (tlb_type != hypervisor) |
| 274 | return; |
| 275 | |
David S. Miller | 0b64120 | 2011-11-17 22:44:58 -0800 | [diff] [blame] | 276 | sun4v_patch_1insn_range(&__sun4v_1insn_patch, |
| 277 | &__sun4v_1insn_patch_end); |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 278 | |
David S. Miller | 0b64120 | 2011-11-17 22:44:58 -0800 | [diff] [blame] | 279 | sun4v_patch_2insn_range(&__sun4v_2insn_patch, |
| 280 | &__sun4v_2insn_patch_end); |
David S. Miller | c7754d4 | 2007-05-15 17:03:54 -0700 | [diff] [blame] | 281 | |
| 282 | sun4v_hvapi_init(); |
David S. Miller | 936f482 | 2006-02-05 21:29:28 -0800 | [diff] [blame] | 283 | } |
| 284 | |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 285 | static void __init popc_patch(void) |
| 286 | { |
| 287 | struct popc_3insn_patch_entry *p3; |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 288 | struct popc_6insn_patch_entry *p6; |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 289 | |
| 290 | p3 = &__popc_3insn_patch; |
| 291 | while (p3 < &__popc_3insn_patch_end) { |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 292 | unsigned long i, addr = p3->addr; |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 293 | |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 294 | for (i = 0; i < 3; i++) { |
| 295 | *(unsigned int *) (addr + (i * 4)) = p3->insns[i]; |
| 296 | wmb(); |
| 297 | __asm__ __volatile__("flush %0" |
| 298 | : : "r" (addr + (i * 4))); |
| 299 | } |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 300 | |
| 301 | p3++; |
| 302 | } |
David S. Miller | 56d205c | 2011-08-02 20:23:34 -0700 | [diff] [blame] | 303 | |
| 304 | p6 = &__popc_6insn_patch; |
| 305 | while (p6 < &__popc_6insn_patch_end) { |
| 306 | unsigned long i, addr = p6->addr; |
| 307 | |
| 308 | for (i = 0; i < 6; i++) { |
| 309 | *(unsigned int *) (addr + (i * 4)) = p6->insns[i]; |
| 310 | wmb(); |
| 311 | __asm__ __volatile__("flush %0" |
| 312 | : : "r" (addr + (i * 4))); |
| 313 | } |
| 314 | |
| 315 | p6++; |
| 316 | } |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 317 | } |
| 318 | |
David S. Miller | e9b9eb5 | 2012-10-27 23:00:41 -0700 | [diff] [blame] | 319 | static void __init pause_patch(void) |
| 320 | { |
| 321 | struct pause_patch_entry *p; |
| 322 | |
David S. Miller | 187818c | 2012-10-28 13:04:47 -0700 | [diff] [blame] | 323 | p = &__pause_3insn_patch; |
| 324 | while (p < &__pause_3insn_patch_end) { |
David S. Miller | e9b9eb5 | 2012-10-27 23:00:41 -0700 | [diff] [blame] | 325 | unsigned long i, addr = p->addr; |
| 326 | |
| 327 | for (i = 0; i < 3; i++) { |
| 328 | *(unsigned int *) (addr + (i * 4)) = p->insns[i]; |
| 329 | wmb(); |
| 330 | __asm__ __volatile__("flush %0" |
| 331 | : : "r" (addr + (i * 4))); |
| 332 | } |
| 333 | |
| 334 | p++; |
| 335 | } |
| 336 | } |
| 337 | |
David S. Miller | 951bc82 | 2006-05-31 01:24:02 -0700 | [diff] [blame] | 338 | #ifdef CONFIG_SMP |
| 339 | void __init boot_cpu_id_too_large(int cpu) |
| 340 | { |
| 341 | prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", |
| 342 | cpu, NR_CPUS); |
| 343 | prom_halt(); |
| 344 | } |
| 345 | #endif |
| 346 | |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 347 | /* On Ultra, we support all of the v8 capabilities. */ |
| 348 | unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | |
| 349 | HWCAP_SPARC_SWAP | HWCAP_SPARC_MULDIV | |
| 350 | HWCAP_SPARC_V9); |
| 351 | EXPORT_SYMBOL(sparc64_elf_hwcap); |
| 352 | |
| 353 | static const char *hwcaps[] = { |
| 354 | "flush", "stbar", "swap", "muldiv", "v9", |
| 355 | "ultra3", "blkinit", "n2", |
| 356 | |
| 357 | /* These strings are as they appear in the machine description |
| 358 | * 'hwcap-list' property for cpu nodes. |
| 359 | */ |
| 360 | "mul32", "div32", "fsmuld", "v8plus", "popc", "vis", "vis2", |
| 361 | "ASIBlkInit", "fmaf", "vis3", "hpc", "random", "trans", "fjfmau", |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 362 | "ima", "cspare", "pause", "cbcond", |
| 363 | }; |
| 364 | |
| 365 | static const char *crypto_hwcaps[] = { |
| 366 | "aes", "des", "kasumi", "camellia", "md5", "sha1", "sha256", |
| 367 | "sha512", "mpmul", "montmul", "montsqr", "crc32c", |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 368 | }; |
| 369 | |
| 370 | void cpucap_info(struct seq_file *m) |
| 371 | { |
| 372 | unsigned long caps = sparc64_elf_hwcap; |
| 373 | int i, printed = 0; |
| 374 | |
| 375 | seq_puts(m, "cpucaps\t\t: "); |
| 376 | for (i = 0; i < ARRAY_SIZE(hwcaps); i++) { |
| 377 | unsigned long bit = 1UL << i; |
| 378 | if (caps & bit) { |
| 379 | seq_printf(m, "%s%s", |
| 380 | printed ? "," : "", hwcaps[i]); |
| 381 | printed++; |
| 382 | } |
| 383 | } |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 384 | if (caps & HWCAP_SPARC_CRYPTO) { |
| 385 | unsigned long cfr; |
| 386 | |
| 387 | __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); |
| 388 | for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) { |
| 389 | unsigned long bit = 1UL << i; |
| 390 | if (cfr & bit) { |
| 391 | seq_printf(m, "%s%s", |
| 392 | printed ? "," : "", crypto_hwcaps[i]); |
| 393 | printed++; |
| 394 | } |
| 395 | } |
| 396 | } |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 397 | seq_putc(m, '\n'); |
| 398 | } |
| 399 | |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 400 | static void __init report_one_hwcap(int *printed, const char *name) |
| 401 | { |
| 402 | if ((*printed) == 0) |
| 403 | printk(KERN_INFO "CPU CAPS: ["); |
| 404 | printk(KERN_CONT "%s%s", |
| 405 | (*printed) ? "," : "", name); |
| 406 | if (++(*printed) == 8) { |
| 407 | printk(KERN_CONT "]\n"); |
| 408 | *printed = 0; |
| 409 | } |
| 410 | } |
| 411 | |
| 412 | static void __init report_crypto_hwcaps(int *printed) |
| 413 | { |
| 414 | unsigned long cfr; |
| 415 | int i; |
| 416 | |
| 417 | __asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr)); |
| 418 | |
| 419 | for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) { |
| 420 | unsigned long bit = 1UL << i; |
| 421 | if (cfr & bit) |
| 422 | report_one_hwcap(printed, crypto_hwcaps[i]); |
| 423 | } |
| 424 | } |
| 425 | |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 426 | static void __init report_hwcaps(unsigned long caps) |
| 427 | { |
| 428 | int i, printed = 0; |
| 429 | |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 430 | for (i = 0; i < ARRAY_SIZE(hwcaps); i++) { |
| 431 | unsigned long bit = 1UL << i; |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 432 | if (caps & bit) |
| 433 | report_one_hwcap(&printed, hwcaps[i]); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 434 | } |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 435 | if (caps & HWCAP_SPARC_CRYPTO) |
| 436 | report_crypto_hwcaps(&printed); |
| 437 | if (printed != 0) |
| 438 | printk(KERN_CONT "]\n"); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | static unsigned long __init mdesc_cpu_hwcap_list(void) |
| 442 | { |
| 443 | struct mdesc_handle *hp; |
| 444 | unsigned long caps = 0; |
| 445 | const char *prop; |
| 446 | int len; |
| 447 | u64 pn; |
| 448 | |
| 449 | hp = mdesc_grab(); |
| 450 | if (!hp) |
| 451 | return 0; |
| 452 | |
| 453 | pn = mdesc_node_by_name(hp, MDESC_NODE_NULL, "cpu"); |
| 454 | if (pn == MDESC_NODE_NULL) |
| 455 | goto out; |
| 456 | |
| 457 | prop = mdesc_get_property(hp, pn, "hwcap-list", &len); |
| 458 | if (!prop) |
| 459 | goto out; |
| 460 | |
| 461 | while (len) { |
| 462 | int i, plen; |
| 463 | |
| 464 | for (i = 0; i < ARRAY_SIZE(hwcaps); i++) { |
| 465 | unsigned long bit = 1UL << i; |
| 466 | |
| 467 | if (!strcmp(prop, hwcaps[i])) { |
| 468 | caps |= bit; |
| 469 | break; |
| 470 | } |
| 471 | } |
David S. Miller | 6f859c0 | 2012-08-16 16:41:04 -0700 | [diff] [blame] | 472 | for (i = 0; i < ARRAY_SIZE(crypto_hwcaps); i++) { |
| 473 | if (!strcmp(prop, crypto_hwcaps[i])) |
| 474 | caps |= HWCAP_SPARC_CRYPTO; |
| 475 | } |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 476 | |
| 477 | plen = strlen(prop) + 1; |
| 478 | prop += plen; |
| 479 | len -= plen; |
| 480 | } |
| 481 | |
| 482 | out: |
| 483 | mdesc_release(hp); |
| 484 | return caps; |
| 485 | } |
| 486 | |
| 487 | /* This yields a mask that user programs can use to figure out what |
| 488 | * instruction set this cpu supports. |
| 489 | */ |
| 490 | static void __init init_sparc64_elf_hwcap(void) |
| 491 | { |
| 492 | unsigned long cap = sparc64_elf_hwcap; |
| 493 | unsigned long mdesc_caps; |
| 494 | |
| 495 | if (tlb_type == cheetah || tlb_type == cheetah_plus) |
| 496 | cap |= HWCAP_SPARC_ULTRA3; |
| 497 | else if (tlb_type == hypervisor) { |
| 498 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1 || |
| 499 | sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 500 | sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 501 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
| 502 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 503 | cap |= HWCAP_SPARC_BLKINIT; |
| 504 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 505 | sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 506 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
| 507 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 508 | cap |= HWCAP_SPARC_N2; |
| 509 | } |
| 510 | |
| 511 | cap |= (AV_SPARC_MUL32 | AV_SPARC_DIV32 | AV_SPARC_V8PLUS); |
| 512 | |
| 513 | mdesc_caps = mdesc_cpu_hwcap_list(); |
| 514 | if (!mdesc_caps) { |
| 515 | if (tlb_type == spitfire) |
| 516 | cap |= AV_SPARC_VIS; |
| 517 | if (tlb_type == cheetah || tlb_type == cheetah_plus) |
| 518 | cap |= AV_SPARC_VIS | AV_SPARC_VIS2; |
David S. Miller | 1a8e0da | 2011-08-29 21:14:29 -0700 | [diff] [blame] | 519 | if (tlb_type == cheetah_plus) { |
| 520 | unsigned long impl, ver; |
| 521 | |
| 522 | __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver)); |
| 523 | impl = ((ver >> 32) & 0xffff); |
| 524 | if (impl == PANTHER_IMPL) |
| 525 | cap |= AV_SPARC_POPC; |
| 526 | } |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 527 | if (tlb_type == hypervisor) { |
| 528 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA1) |
| 529 | cap |= AV_SPARC_ASI_BLK_INIT; |
| 530 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA2 || |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 531 | sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 532 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
| 533 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 534 | cap |= (AV_SPARC_VIS | AV_SPARC_VIS2 | |
| 535 | AV_SPARC_ASI_BLK_INIT | |
| 536 | AV_SPARC_POPC); |
David S. Miller | 08cefa9 | 2011-09-11 10:42:20 -0700 | [diff] [blame] | 537 | if (sun4v_chip_type == SUN4V_CHIP_NIAGARA3 || |
| 538 | sun4v_chip_type == SUN4V_CHIP_NIAGARA4 || |
| 539 | sun4v_chip_type == SUN4V_CHIP_NIAGARA5) |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 540 | cap |= (AV_SPARC_VIS3 | AV_SPARC_HPC | |
| 541 | AV_SPARC_FMAF); |
| 542 | } |
| 543 | } |
| 544 | sparc64_elf_hwcap = cap | mdesc_caps; |
| 545 | |
| 546 | report_hwcaps(sparc64_elf_hwcap); |
David S. Miller | ef7c4d4 | 2011-07-29 09:42:07 -0700 | [diff] [blame] | 547 | |
| 548 | if (sparc64_elf_hwcap & AV_SPARC_POPC) |
| 549 | popc_patch(); |
David S. Miller | e9b9eb5 | 2012-10-27 23:00:41 -0700 | [diff] [blame] | 550 | if (sparc64_elf_hwcap & AV_SPARC_PAUSE) |
| 551 | pause_patch(); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 552 | } |
| 553 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | void __init setup_arch(char **cmdline_p) |
| 555 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | /* Initialize PROM console and command line. */ |
| 557 | *cmdline_p = prom_getbootargs(); |
Zhao Hongjiang | 117a0c5 | 2013-06-09 16:57:58 +0800 | [diff] [blame] | 558 | strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); |
David S. Miller | ce3b1d4 | 2008-03-19 03:54:09 -0700 | [diff] [blame] | 559 | parse_early_param(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | |
David S. Miller | 3c62a2d | 2008-02-17 23:22:50 -0800 | [diff] [blame] | 561 | boot_flags_init(*cmdline_p); |
David S. Miller | c57ec52 | 2009-11-27 17:33:43 -0800 | [diff] [blame] | 562 | #ifdef CONFIG_EARLYFB |
| 563 | if (btext_find_display()) |
| 564 | #endif |
| 565 | register_console(&prom_early_console); |
David S. Miller | 3c62a2d | 2008-02-17 23:22:50 -0800 | [diff] [blame] | 566 | |
David S. Miller | 3a8c069 | 2006-02-09 02:54:54 -0800 | [diff] [blame] | 567 | if (tlb_type == hypervisor) |
| 568 | printk("ARCH: SUN4V\n"); |
| 569 | else |
| 570 | printk("ARCH: SUN4U\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
| 572 | #ifdef CONFIG_DUMMY_CONSOLE |
| 573 | conswitchp = &dummy_con; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | #endif |
| 575 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | idprom_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
| 578 | if (!root_flags) |
| 579 | root_mountflags &= ~MS_RDONLY; |
| 580 | ROOT_DEV = old_decode_dev(root_dev); |
Andrew Morton | 467418f | 2006-03-19 12:46:55 -0800 | [diff] [blame] | 581 | #ifdef CONFIG_BLK_DEV_RAM |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; |
| 583 | rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); |
| 584 | rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); |
| 585 | #endif |
| 586 | |
Al Viro | f316964 | 2006-01-12 01:05:42 -0800 | [diff] [blame] | 587 | task_thread_info(&init_task)->kregs = &fake_swapper_regs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | |
| 589 | #ifdef CONFIG_IP_PNP |
| 590 | if (!ic_set_manually) { |
Andres Salomon | 8d12556 | 2010-10-08 14:18:11 -0700 | [diff] [blame] | 591 | phandle chosen = prom_finddevice("/chosen"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | u32 cl, sv, gw; |
| 593 | |
| 594 | cl = prom_getintdefault (chosen, "client-ip", 0); |
| 595 | sv = prom_getintdefault (chosen, "server-ip", 0); |
| 596 | gw = prom_getintdefault (chosen, "gateway-ip", 0); |
| 597 | if (cl && sv) { |
| 598 | ic_myaddr = cl; |
| 599 | ic_servaddr = sv; |
| 600 | if (gw) |
| 601 | ic_gateway = gw; |
| 602 | #if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP) |
| 603 | ic_proto_enabled = 0; |
| 604 | #endif |
| 605 | } |
| 606 | } |
| 607 | #endif |
| 608 | |
David S. Miller | 56fb4df | 2006-02-26 23:24:22 -0800 | [diff] [blame] | 609 | /* Get boot processor trap_block[] setup. */ |
David S. Miller | 72aff53 | 2006-02-17 01:29:17 -0800 | [diff] [blame] | 610 | init_cur_cpu_trap(current_thread_info()); |
David S. Miller | 52845cd | 2006-02-26 23:32:33 -0800 | [diff] [blame] | 611 | |
| 612 | paging_init(); |
David S. Miller | ac85fe8 | 2011-07-28 23:31:26 -0700 | [diff] [blame] | 613 | init_sparc64_elf_hwcap(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | } |
| 615 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | extern int stop_a_enabled; |
| 617 | |
| 618 | void sun_do_break(void) |
| 619 | { |
| 620 | if (!stop_a_enabled) |
| 621 | return; |
| 622 | |
| 623 | prom_printf("\n"); |
| 624 | flush_user_windows(); |
| 625 | |
| 626 | prom_cmdline(); |
| 627 | } |
Sam Ravnborg | 917c366 | 2009-01-08 16:58:20 -0800 | [diff] [blame] | 628 | EXPORT_SYMBOL(sun_do_break); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | int stop_a_enabled = 1; |
Sam Ravnborg | 917c366 | 2009-01-08 16:58:20 -0800 | [diff] [blame] | 631 | EXPORT_SYMBOL(stop_a_enabled); |