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1da177e4 LT |
1 | /* |
2 | * Architecture-specific setup. | |
3 | * | |
4 | * Copyright (C) 1998-2001, 2003-2004 Hewlett-Packard Co | |
5 | * David Mosberger-Tang <davidm@hpl.hp.com> | |
6 | * Stephane Eranian <eranian@hpl.hp.com> | |
e927ecb0 SS |
7 | * Copyright (C) 2000, 2004 Intel Corp |
8 | * Rohit Seth <rohit.seth@intel.com> | |
9 | * Suresh Siddha <suresh.b.siddha@intel.com> | |
10 | * Gordon Jin <gordon.jin@intel.com> | |
1da177e4 LT |
11 | * Copyright (C) 1999 VA Linux Systems |
12 | * Copyright (C) 1999 Walt Drummond <drummond@valinux.com> | |
13 | * | |
e927ecb0 SS |
14 | * 12/26/04 S.Siddha, G.Jin, R.Seth |
15 | * Add multi-threading and multi-core detection | |
1da177e4 LT |
16 | * 11/12/01 D.Mosberger Convert get_cpuinfo() to seq_file based show_cpuinfo(). |
17 | * 04/04/00 D.Mosberger renamed cpu_initialized to cpu_online_map | |
18 | * 03/31/00 R.Seth cpu_initialized and current->processor fixes | |
19 | * 02/04/00 D.Mosberger some more get_cpuinfo fixes... | |
20 | * 02/01/00 R.Seth fixed get_cpuinfo for SMP | |
21 | * 01/07/99 S.Eranian added the support for command line argument | |
22 | * 06/24/99 W.Drummond added boot_cpu_data. | |
08357f82 | 23 | * 05/28/05 Z. Menyhart Dynamic stride size for "flush_icache_range()" |
1da177e4 | 24 | */ |
1da177e4 LT |
25 | #include <linux/module.h> |
26 | #include <linux/init.h> | |
27 | ||
28 | #include <linux/acpi.h> | |
29 | #include <linux/bootmem.h> | |
30 | #include <linux/console.h> | |
31 | #include <linux/delay.h> | |
32 | #include <linux/kernel.h> | |
33 | #include <linux/reboot.h> | |
34 | #include <linux/sched.h> | |
35 | #include <linux/seq_file.h> | |
36 | #include <linux/string.h> | |
37 | #include <linux/threads.h> | |
38 | #include <linux/tty.h> | |
3ed3bce8 | 39 | #include <linux/dmi.h> |
1da177e4 LT |
40 | #include <linux/serial.h> |
41 | #include <linux/serial_core.h> | |
42 | #include <linux/efi.h> | |
43 | #include <linux/initrd.h> | |
6c4fa560 | 44 | #include <linux/pm.h> |
95235ca2 | 45 | #include <linux/cpufreq.h> |
1da177e4 LT |
46 | |
47 | #include <asm/ia32.h> | |
48 | #include <asm/machvec.h> | |
49 | #include <asm/mca.h> | |
50 | #include <asm/meminit.h> | |
51 | #include <asm/page.h> | |
52 | #include <asm/patch.h> | |
53 | #include <asm/pgtable.h> | |
54 | #include <asm/processor.h> | |
55 | #include <asm/sal.h> | |
56 | #include <asm/sections.h> | |
57 | #include <asm/serial.h> | |
58 | #include <asm/setup.h> | |
59 | #include <asm/smp.h> | |
60 | #include <asm/system.h> | |
61 | #include <asm/unistd.h> | |
4dc7a0bb | 62 | #include <asm/system.h> |
1da177e4 LT |
63 | |
64 | #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) | |
65 | # error "struct cpuinfo_ia64 too big!" | |
66 | #endif | |
67 | ||
68 | #ifdef CONFIG_SMP | |
69 | unsigned long __per_cpu_offset[NR_CPUS]; | |
70 | EXPORT_SYMBOL(__per_cpu_offset); | |
71 | #endif | |
72 | ||
d6e56a2a TL |
73 | extern void ia64_setup_printk_clock(void); |
74 | ||
1da177e4 LT |
75 | DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info); |
76 | DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); | |
77 | DEFINE_PER_CPU(unsigned long, ia64_phys_stacked_size_p8); | |
78 | unsigned long ia64_cycles_per_usec; | |
79 | struct ia64_boot_param *ia64_boot_param; | |
80 | struct screen_info screen_info; | |
66b7f8a3 MM |
81 | unsigned long vga_console_iobase; |
82 | unsigned long vga_console_membase; | |
1da177e4 | 83 | |
be379124 KA |
84 | static struct resource data_resource = { |
85 | .name = "Kernel data", | |
86 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
87 | }; | |
88 | ||
89 | static struct resource code_resource = { | |
90 | .name = "Kernel code", | |
91 | .flags = IORESOURCE_BUSY | IORESOURCE_MEM | |
92 | }; | |
93 | extern void efi_initialize_iomem_resources(struct resource *, | |
94 | struct resource *); | |
d719948e | 95 | extern char _text[], _end[], _etext[]; |
be379124 | 96 | |
1da177e4 | 97 | unsigned long ia64_max_cacheline_size; |
e1531b42 JL |
98 | |
99 | int dma_get_cache_alignment(void) | |
100 | { | |
101 | return ia64_max_cacheline_size; | |
102 | } | |
103 | EXPORT_SYMBOL(dma_get_cache_alignment); | |
104 | ||
1da177e4 LT |
105 | unsigned long ia64_iobase; /* virtual address for I/O accesses */ |
106 | EXPORT_SYMBOL(ia64_iobase); | |
107 | struct io_space io_space[MAX_IO_SPACES]; | |
108 | EXPORT_SYMBOL(io_space); | |
109 | unsigned int num_io_spaces; | |
110 | ||
08357f82 ZM |
111 | /* |
112 | * "flush_icache_range()" needs to know what processor dependent stride size to use | |
113 | * when it makes i-cache(s) coherent with d-caches. | |
114 | */ | |
115 | #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ | |
116 | unsigned long ia64_i_cache_stride_shift = ~0; | |
117 | ||
1da177e4 LT |
118 | /* |
119 | * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This | |
120 | * mask specifies a mask of address bits that must be 0 in order for two buffers to be | |
121 | * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start | |
122 | * address of the second buffer must be aligned to (merge_mask+1) in order to be | |
123 | * mergeable). By default, we assume there is no I/O MMU which can merge physically | |
124 | * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu | |
125 | * page-size of 2^64. | |
126 | */ | |
127 | unsigned long ia64_max_iommu_merge_mask = ~0UL; | |
128 | EXPORT_SYMBOL(ia64_max_iommu_merge_mask); | |
129 | ||
130 | /* | |
131 | * We use a special marker for the end of memory and it uses the extra (+1) slot | |
132 | */ | |
dae28066 KC |
133 | struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; |
134 | int num_rsvd_regions __initdata; | |
1da177e4 LT |
135 | |
136 | ||
137 | /* | |
138 | * Filter incoming memory segments based on the primitive map created from the boot | |
139 | * parameters. Segments contained in the map are removed from the memory ranges. A | |
140 | * caller-specified function is called with the memory ranges that remain after filtering. | |
141 | * This routine does not assume the incoming segments are sorted. | |
142 | */ | |
dae28066 | 143 | int __init |
1da177e4 LT |
144 | filter_rsvd_memory (unsigned long start, unsigned long end, void *arg) |
145 | { | |
146 | unsigned long range_start, range_end, prev_start; | |
147 | void (*func)(unsigned long, unsigned long, int); | |
148 | int i; | |
149 | ||
150 | #if IGNORE_PFN0 | |
151 | if (start == PAGE_OFFSET) { | |
152 | printk(KERN_WARNING "warning: skipping physical page 0\n"); | |
153 | start += PAGE_SIZE; | |
154 | if (start >= end) return 0; | |
155 | } | |
156 | #endif | |
157 | /* | |
158 | * lowest possible address(walker uses virtual) | |
159 | */ | |
160 | prev_start = PAGE_OFFSET; | |
161 | func = arg; | |
162 | ||
163 | for (i = 0; i < num_rsvd_regions; ++i) { | |
164 | range_start = max(start, prev_start); | |
165 | range_end = min(end, rsvd_region[i].start); | |
166 | ||
167 | if (range_start < range_end) | |
168 | call_pernode_memory(__pa(range_start), range_end - range_start, func); | |
169 | ||
170 | /* nothing more available in this segment */ | |
171 | if (range_end == end) return 0; | |
172 | ||
173 | prev_start = rsvd_region[i].end; | |
174 | } | |
175 | /* end of memory marker allows full processing inside loop body */ | |
176 | return 0; | |
177 | } | |
178 | ||
dae28066 | 179 | static void __init |
1da177e4 LT |
180 | sort_regions (struct rsvd_region *rsvd_region, int max) |
181 | { | |
182 | int j; | |
183 | ||
184 | /* simple bubble sorting */ | |
185 | while (max--) { | |
186 | for (j = 0; j < max; ++j) { | |
187 | if (rsvd_region[j].start > rsvd_region[j+1].start) { | |
188 | struct rsvd_region tmp; | |
189 | tmp = rsvd_region[j]; | |
190 | rsvd_region[j] = rsvd_region[j + 1]; | |
191 | rsvd_region[j + 1] = tmp; | |
192 | } | |
193 | } | |
194 | } | |
195 | } | |
196 | ||
be379124 KA |
197 | /* |
198 | * Request address space for all standard resources | |
199 | */ | |
200 | static int __init register_memory(void) | |
201 | { | |
202 | code_resource.start = ia64_tpa(_text); | |
203 | code_resource.end = ia64_tpa(_etext) - 1; | |
204 | data_resource.start = ia64_tpa(_etext); | |
d719948e | 205 | data_resource.end = ia64_tpa(_end) - 1; |
be379124 KA |
206 | efi_initialize_iomem_resources(&code_resource, &data_resource); |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
211 | __initcall(register_memory); | |
212 | ||
1da177e4 LT |
213 | /** |
214 | * reserve_memory - setup reserved memory areas | |
215 | * | |
216 | * Setup the reserved memory areas set aside for the boot parameters, | |
217 | * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, | |
218 | * see include/asm-ia64/meminit.h if you need to define more. | |
219 | */ | |
dae28066 | 220 | void __init |
1da177e4 LT |
221 | reserve_memory (void) |
222 | { | |
223 | int n = 0; | |
224 | ||
225 | /* | |
226 | * none of the entries in this table overlap | |
227 | */ | |
228 | rsvd_region[n].start = (unsigned long) ia64_boot_param; | |
229 | rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); | |
230 | n++; | |
231 | ||
232 | rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); | |
233 | rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; | |
234 | n++; | |
235 | ||
236 | rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); | |
237 | rsvd_region[n].end = (rsvd_region[n].start | |
238 | + strlen(__va(ia64_boot_param->command_line)) + 1); | |
239 | n++; | |
240 | ||
241 | rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); | |
242 | rsvd_region[n].end = (unsigned long) ia64_imva(_end); | |
243 | n++; | |
244 | ||
245 | #ifdef CONFIG_BLK_DEV_INITRD | |
246 | if (ia64_boot_param->initrd_start) { | |
247 | rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); | |
248 | rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; | |
249 | n++; | |
250 | } | |
251 | #endif | |
252 | ||
d8c97d5f TL |
253 | efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); |
254 | n++; | |
255 | ||
1da177e4 LT |
256 | /* end of memory marker */ |
257 | rsvd_region[n].start = ~0UL; | |
258 | rsvd_region[n].end = ~0UL; | |
259 | n++; | |
260 | ||
261 | num_rsvd_regions = n; | |
5eb1d63f | 262 | BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); |
1da177e4 LT |
263 | |
264 | sort_regions(rsvd_region, num_rsvd_regions); | |
265 | } | |
266 | ||
267 | /** | |
268 | * find_initrd - get initrd parameters from the boot parameter structure | |
269 | * | |
270 | * Grab the initrd start and end from the boot parameter struct given us by | |
271 | * the boot loader. | |
272 | */ | |
dae28066 | 273 | void __init |
1da177e4 LT |
274 | find_initrd (void) |
275 | { | |
276 | #ifdef CONFIG_BLK_DEV_INITRD | |
277 | if (ia64_boot_param->initrd_start) { | |
278 | initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); | |
279 | initrd_end = initrd_start+ia64_boot_param->initrd_size; | |
280 | ||
281 | printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", | |
282 | initrd_start, ia64_boot_param->initrd_size); | |
283 | } | |
284 | #endif | |
285 | } | |
286 | ||
287 | static void __init | |
288 | io_port_init (void) | |
289 | { | |
1da177e4 LT |
290 | unsigned long phys_iobase; |
291 | ||
292 | /* | |
44c45120 BH |
293 | * Set `iobase' based on the EFI memory map or, failing that, the |
294 | * value firmware left in ar.k0. | |
1da177e4 | 295 | * |
44c45120 BH |
296 | * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute |
297 | * the port's virtual address, so ia32_load_state() loads it with a | |
298 | * user virtual address. But in ia64 mode, glibc uses the | |
299 | * *physical* address in ar.k0 to mmap the appropriate area from | |
300 | * /dev/mem, and the inX()/outX() interfaces use MMIO. In both | |
301 | * cases, user-mode can only use the legacy 0-64K I/O port space. | |
302 | * | |
303 | * ar.k0 is not involved in kernel I/O port accesses, which can use | |
304 | * any of the I/O port spaces and are done via MMIO using the | |
305 | * virtual mmio_base from the appropriate io_space[]. | |
1da177e4 LT |
306 | */ |
307 | phys_iobase = efi_get_iobase(); | |
44c45120 | 308 | if (!phys_iobase) { |
1da177e4 | 309 | phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); |
44c45120 BH |
310 | printk(KERN_INFO "No I/O port range found in EFI memory map, " |
311 | "falling back to AR.KR0 (0x%lx)\n", phys_iobase); | |
1da177e4 LT |
312 | } |
313 | ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); | |
44c45120 | 314 | ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); |
1da177e4 LT |
315 | |
316 | /* setup legacy IO port space */ | |
317 | io_space[0].mmio_base = ia64_iobase; | |
318 | io_space[0].sparse = 1; | |
319 | num_io_spaces = 1; | |
320 | } | |
321 | ||
322 | /** | |
323 | * early_console_setup - setup debugging console | |
324 | * | |
325 | * Consoles started here require little enough setup that we can start using | |
326 | * them very early in the boot process, either right after the machine | |
327 | * vector initialization, or even before if the drivers can detect their hw. | |
328 | * | |
329 | * Returns non-zero if a console couldn't be setup. | |
330 | */ | |
331 | static inline int __init | |
332 | early_console_setup (char *cmdline) | |
333 | { | |
66b7f8a3 MM |
334 | int earlycons = 0; |
335 | ||
1da177e4 LT |
336 | #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE |
337 | { | |
338 | extern int sn_serial_console_early_setup(void); | |
339 | if (!sn_serial_console_early_setup()) | |
66b7f8a3 | 340 | earlycons++; |
1da177e4 LT |
341 | } |
342 | #endif | |
343 | #ifdef CONFIG_EFI_PCDP | |
344 | if (!efi_setup_pcdp_console(cmdline)) | |
66b7f8a3 | 345 | earlycons++; |
1da177e4 LT |
346 | #endif |
347 | #ifdef CONFIG_SERIAL_8250_CONSOLE | |
348 | if (!early_serial_console_init(cmdline)) | |
66b7f8a3 | 349 | earlycons++; |
1da177e4 LT |
350 | #endif |
351 | ||
66b7f8a3 | 352 | return (earlycons) ? 0 : -1; |
1da177e4 LT |
353 | } |
354 | ||
355 | static inline void | |
356 | mark_bsp_online (void) | |
357 | { | |
358 | #ifdef CONFIG_SMP | |
359 | /* If we register an early console, allow CPU 0 to printk */ | |
360 | cpu_set(smp_processor_id(), cpu_online_map); | |
361 | #endif | |
362 | } | |
363 | ||
e927ecb0 | 364 | #ifdef CONFIG_SMP |
244fd545 | 365 | static void __init |
e927ecb0 SS |
366 | check_for_logical_procs (void) |
367 | { | |
368 | pal_logical_to_physical_t info; | |
369 | s64 status; | |
370 | ||
371 | status = ia64_pal_logical_to_phys(0, &info); | |
372 | if (status == -1) { | |
373 | printk(KERN_INFO "No logical to physical processor mapping " | |
374 | "available\n"); | |
375 | return; | |
376 | } | |
377 | if (status) { | |
378 | printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n", | |
379 | status); | |
380 | return; | |
381 | } | |
382 | /* | |
383 | * Total number of siblings that BSP has. Though not all of them | |
384 | * may have booted successfully. The correct number of siblings | |
385 | * booted is in info.overview_num_log. | |
386 | */ | |
387 | smp_num_siblings = info.overview_tpc; | |
388 | smp_num_cpucores = info.overview_cpp; | |
389 | } | |
390 | #endif | |
391 | ||
a5b00bb4 H |
392 | static __initdata int nomca; |
393 | static __init int setup_nomca(char *s) | |
394 | { | |
395 | nomca = 1; | |
396 | return 0; | |
397 | } | |
398 | early_param("nomca", setup_nomca); | |
399 | ||
1da177e4 LT |
400 | void __init |
401 | setup_arch (char **cmdline_p) | |
402 | { | |
403 | unw_init(); | |
404 | ||
405 | ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); | |
406 | ||
407 | *cmdline_p = __va(ia64_boot_param->command_line); | |
408 | strlcpy(saved_command_line, *cmdline_p, COMMAND_LINE_SIZE); | |
409 | ||
410 | efi_init(); | |
411 | io_port_init(); | |
412 | ||
a5b00bb4 H |
413 | parse_early_param(); |
414 | ||
1da177e4 | 415 | #ifdef CONFIG_IA64_GENERIC |
a5b00bb4 | 416 | machvec_init(NULL); |
1da177e4 LT |
417 | #endif |
418 | ||
419 | if (early_console_setup(*cmdline_p) == 0) | |
420 | mark_bsp_online(); | |
421 | ||
888ba6c6 | 422 | #ifdef CONFIG_ACPI |
1da177e4 LT |
423 | /* Initialize the ACPI boot-time table parser */ |
424 | acpi_table_init(); | |
425 | # ifdef CONFIG_ACPI_NUMA | |
426 | acpi_numa_init(); | |
427 | # endif | |
428 | #else | |
429 | # ifdef CONFIG_SMP | |
430 | smp_build_cpu_map(); /* happens, e.g., with the Ski simulator */ | |
431 | # endif | |
432 | #endif /* CONFIG_APCI_BOOT */ | |
433 | ||
434 | find_memory(); | |
435 | ||
436 | /* process SAL system table: */ | |
b2c99e3c | 437 | ia64_sal_init(__va(efi.sal_systab)); |
1da177e4 | 438 | |
d6e56a2a TL |
439 | ia64_setup_printk_clock(); |
440 | ||
1da177e4 LT |
441 | #ifdef CONFIG_SMP |
442 | cpu_physical_id(0) = hard_smp_processor_id(); | |
e927ecb0 SS |
443 | |
444 | cpu_set(0, cpu_sibling_map[0]); | |
445 | cpu_set(0, cpu_core_map[0]); | |
446 | ||
447 | check_for_logical_procs(); | |
448 | if (smp_num_cpucores > 1) | |
449 | printk(KERN_INFO | |
450 | "cpu package is Multi-Core capable: number of cores=%d\n", | |
451 | smp_num_cpucores); | |
452 | if (smp_num_siblings > 1) | |
453 | printk(KERN_INFO | |
454 | "cpu package is Multi-Threading capable: number of siblings=%d\n", | |
455 | smp_num_siblings); | |
1da177e4 LT |
456 | #endif |
457 | ||
458 | cpu_init(); /* initialize the bootstrap CPU */ | |
dcc17d1b | 459 | mmu_context_init(); /* initialize context_id bitmap */ |
1da177e4 | 460 | |
888ba6c6 | 461 | #ifdef CONFIG_ACPI |
1da177e4 LT |
462 | acpi_boot_init(); |
463 | #endif | |
464 | ||
465 | #ifdef CONFIG_VT | |
466 | if (!conswitchp) { | |
467 | # if defined(CONFIG_DUMMY_CONSOLE) | |
468 | conswitchp = &dummy_con; | |
469 | # endif | |
470 | # if defined(CONFIG_VGA_CONSOLE) | |
471 | /* | |
472 | * Non-legacy systems may route legacy VGA MMIO range to system | |
473 | * memory. vga_con probes the MMIO hole, so memory looks like | |
474 | * a VGA device to it. The EFI memory map can tell us if it's | |
475 | * memory so we can avoid this problem. | |
476 | */ | |
477 | if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) | |
478 | conswitchp = &vga_con; | |
479 | # endif | |
480 | } | |
481 | #endif | |
482 | ||
483 | /* enable IA-64 Machine Check Abort Handling unless disabled */ | |
a5b00bb4 | 484 | if (!nomca) |
1da177e4 LT |
485 | ia64_mca_init(); |
486 | ||
487 | platform_setup(cmdline_p); | |
488 | paging_init(); | |
489 | } | |
490 | ||
491 | /* | |
492 | * Display cpu info for all cpu's. | |
493 | */ | |
494 | static int | |
495 | show_cpuinfo (struct seq_file *m, void *v) | |
496 | { | |
497 | #ifdef CONFIG_SMP | |
498 | # define lpj c->loops_per_jiffy | |
499 | # define cpunum c->cpu | |
500 | #else | |
501 | # define lpj loops_per_jiffy | |
502 | # define cpunum 0 | |
503 | #endif | |
504 | static struct { | |
505 | unsigned long mask; | |
506 | const char *feature_name; | |
507 | } feature_bits[] = { | |
508 | { 1UL << 0, "branchlong" }, | |
509 | { 1UL << 1, "spontaneous deferral"}, | |
510 | { 1UL << 2, "16-byte atomic ops" } | |
511 | }; | |
512 | char family[32], features[128], *cp, sep; | |
513 | struct cpuinfo_ia64 *c = v; | |
514 | unsigned long mask; | |
38c0b2c2 | 515 | unsigned long proc_freq; |
1da177e4 LT |
516 | int i; |
517 | ||
518 | mask = c->features; | |
519 | ||
520 | switch (c->family) { | |
521 | case 0x07: memcpy(family, "Itanium", 8); break; | |
522 | case 0x1f: memcpy(family, "Itanium 2", 10); break; | |
523 | default: sprintf(family, "%u", c->family); break; | |
524 | } | |
525 | ||
526 | /* build the feature string: */ | |
527 | memcpy(features, " standard", 10); | |
528 | cp = features; | |
529 | sep = 0; | |
530 | for (i = 0; i < (int) ARRAY_SIZE(feature_bits); ++i) { | |
531 | if (mask & feature_bits[i].mask) { | |
532 | if (sep) | |
533 | *cp++ = sep; | |
534 | sep = ','; | |
535 | *cp++ = ' '; | |
536 | strcpy(cp, feature_bits[i].feature_name); | |
537 | cp += strlen(feature_bits[i].feature_name); | |
538 | mask &= ~feature_bits[i].mask; | |
539 | } | |
540 | } | |
541 | if (mask) { | |
542 | /* print unknown features as a hex value: */ | |
543 | if (sep) | |
544 | *cp++ = sep; | |
545 | sprintf(cp, " 0x%lx", mask); | |
546 | } | |
547 | ||
95235ca2 VP |
548 | proc_freq = cpufreq_quick_get(cpunum); |
549 | if (!proc_freq) | |
550 | proc_freq = c->proc_freq / 1000; | |
551 | ||
1da177e4 LT |
552 | seq_printf(m, |
553 | "processor : %d\n" | |
554 | "vendor : %s\n" | |
555 | "arch : IA-64\n" | |
556 | "family : %s\n" | |
557 | "model : %u\n" | |
558 | "revision : %u\n" | |
559 | "archrev : %u\n" | |
560 | "features :%s\n" /* don't change this---it _is_ right! */ | |
561 | "cpu number : %lu\n" | |
562 | "cpu regs : %u\n" | |
563 | "cpu MHz : %lu.%06lu\n" | |
564 | "itc MHz : %lu.%06lu\n" | |
e927ecb0 | 565 | "BogoMIPS : %lu.%02lu\n", |
1da177e4 LT |
566 | cpunum, c->vendor, family, c->model, c->revision, c->archrev, |
567 | features, c->ppn, c->number, | |
95235ca2 | 568 | proc_freq / 1000, proc_freq % 1000, |
1da177e4 LT |
569 | c->itc_freq / 1000000, c->itc_freq % 1000000, |
570 | lpj*HZ/500000, (lpj*HZ/5000) % 100); | |
e927ecb0 | 571 | #ifdef CONFIG_SMP |
ce6e71ad | 572 | seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); |
e927ecb0 SS |
573 | if (c->threads_per_core > 1 || c->cores_per_socket > 1) |
574 | seq_printf(m, | |
575 | "physical id: %u\n" | |
576 | "core id : %u\n" | |
577 | "thread id : %u\n", | |
578 | c->socket_id, c->core_id, c->thread_id); | |
e927ecb0 SS |
579 | #endif |
580 | seq_printf(m,"\n"); | |
581 | ||
1da177e4 LT |
582 | return 0; |
583 | } | |
584 | ||
585 | static void * | |
586 | c_start (struct seq_file *m, loff_t *pos) | |
587 | { | |
588 | #ifdef CONFIG_SMP | |
589 | while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map)) | |
590 | ++*pos; | |
591 | #endif | |
592 | return *pos < NR_CPUS ? cpu_data(*pos) : NULL; | |
593 | } | |
594 | ||
595 | static void * | |
596 | c_next (struct seq_file *m, void *v, loff_t *pos) | |
597 | { | |
598 | ++*pos; | |
599 | return c_start(m, pos); | |
600 | } | |
601 | ||
602 | static void | |
603 | c_stop (struct seq_file *m, void *v) | |
604 | { | |
605 | } | |
606 | ||
607 | struct seq_operations cpuinfo_op = { | |
608 | .start = c_start, | |
609 | .next = c_next, | |
610 | .stop = c_stop, | |
611 | .show = show_cpuinfo | |
612 | }; | |
613 | ||
244fd545 | 614 | static void __cpuinit |
1da177e4 LT |
615 | identify_cpu (struct cpuinfo_ia64 *c) |
616 | { | |
617 | union { | |
618 | unsigned long bits[5]; | |
619 | struct { | |
620 | /* id 0 & 1: */ | |
621 | char vendor[16]; | |
622 | ||
623 | /* id 2 */ | |
624 | u64 ppn; /* processor serial number */ | |
625 | ||
626 | /* id 3: */ | |
627 | unsigned number : 8; | |
628 | unsigned revision : 8; | |
629 | unsigned model : 8; | |
630 | unsigned family : 8; | |
631 | unsigned archrev : 8; | |
632 | unsigned reserved : 24; | |
633 | ||
634 | /* id 4: */ | |
635 | u64 features; | |
636 | } field; | |
637 | } cpuid; | |
638 | pal_vm_info_1_u_t vm1; | |
639 | pal_vm_info_2_u_t vm2; | |
640 | pal_status_t status; | |
641 | unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ | |
642 | int i; | |
643 | ||
644 | for (i = 0; i < 5; ++i) | |
645 | cpuid.bits[i] = ia64_get_cpuid(i); | |
646 | ||
647 | memcpy(c->vendor, cpuid.field.vendor, 16); | |
648 | #ifdef CONFIG_SMP | |
649 | c->cpu = smp_processor_id(); | |
e927ecb0 SS |
650 | |
651 | /* below default values will be overwritten by identify_siblings() | |
652 | * for Multi-Threading/Multi-Core capable cpu's | |
653 | */ | |
654 | c->threads_per_core = c->cores_per_socket = c->num_log = 1; | |
655 | c->socket_id = -1; | |
656 | ||
657 | identify_siblings(c); | |
1da177e4 LT |
658 | #endif |
659 | c->ppn = cpuid.field.ppn; | |
660 | c->number = cpuid.field.number; | |
661 | c->revision = cpuid.field.revision; | |
662 | c->model = cpuid.field.model; | |
663 | c->family = cpuid.field.family; | |
664 | c->archrev = cpuid.field.archrev; | |
665 | c->features = cpuid.field.features; | |
666 | ||
667 | status = ia64_pal_vm_summary(&vm1, &vm2); | |
668 | if (status == PAL_STATUS_SUCCESS) { | |
669 | impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; | |
670 | phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; | |
671 | } | |
672 | c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); | |
673 | c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); | |
674 | } | |
675 | ||
676 | void | |
677 | setup_per_cpu_areas (void) | |
678 | { | |
679 | /* start_kernel() requires this... */ | |
a6b14fa6 AR |
680 | #ifdef CONFIG_ACPI_HOTPLUG_CPU |
681 | prefill_possible_map(); | |
682 | #endif | |
1da177e4 LT |
683 | } |
684 | ||
08357f82 ZM |
685 | /* |
686 | * Calculate the max. cache line size. | |
687 | * | |
688 | * In addition, the minimum of the i-cache stride sizes is calculated for | |
689 | * "flush_icache_range()". | |
690 | */ | |
244fd545 | 691 | static void __cpuinit |
1da177e4 LT |
692 | get_max_cacheline_size (void) |
693 | { | |
694 | unsigned long line_size, max = 1; | |
198e2f18 | 695 | unsigned int cache_size = 0; |
1da177e4 LT |
696 | u64 l, levels, unique_caches; |
697 | pal_cache_config_info_t cci; | |
698 | s64 status; | |
699 | ||
700 | status = ia64_pal_cache_summary(&levels, &unique_caches); | |
701 | if (status != 0) { | |
702 | printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", | |
703 | __FUNCTION__, status); | |
704 | max = SMP_CACHE_BYTES; | |
08357f82 ZM |
705 | /* Safest setup for "flush_icache_range()" */ |
706 | ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; | |
1da177e4 LT |
707 | goto out; |
708 | } | |
709 | ||
710 | for (l = 0; l < levels; ++l) { | |
711 | status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2, | |
712 | &cci); | |
713 | if (status != 0) { | |
714 | printk(KERN_ERR | |
08357f82 | 715 | "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n", |
1da177e4 LT |
716 | __FUNCTION__, l, status); |
717 | max = SMP_CACHE_BYTES; | |
08357f82 ZM |
718 | /* The safest setup for "flush_icache_range()" */ |
719 | cci.pcci_stride = I_CACHE_STRIDE_SHIFT; | |
720 | cci.pcci_unified = 1; | |
1da177e4 LT |
721 | } |
722 | line_size = 1 << cci.pcci_line_size; | |
723 | if (line_size > max) | |
724 | max = line_size; | |
198e2f18 | 725 | if (cache_size < cci.pcci_cache_size) |
726 | cache_size = cci.pcci_cache_size; | |
08357f82 ZM |
727 | if (!cci.pcci_unified) { |
728 | status = ia64_pal_cache_config_info(l, | |
729 | /* cache_type (instruction)= */ 1, | |
730 | &cci); | |
731 | if (status != 0) { | |
732 | printk(KERN_ERR | |
733 | "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n", | |
734 | __FUNCTION__, l, status); | |
735 | /* The safest setup for "flush_icache_range()" */ | |
736 | cci.pcci_stride = I_CACHE_STRIDE_SHIFT; | |
737 | } | |
738 | } | |
739 | if (cci.pcci_stride < ia64_i_cache_stride_shift) | |
740 | ia64_i_cache_stride_shift = cci.pcci_stride; | |
741 | } | |
1da177e4 | 742 | out: |
198e2f18 | 743 | #ifdef CONFIG_SMP |
744 | max_cache_size = max(max_cache_size, cache_size); | |
745 | #endif | |
1da177e4 LT |
746 | if (max > ia64_max_cacheline_size) |
747 | ia64_max_cacheline_size = max; | |
748 | } | |
749 | ||
750 | /* | |
751 | * cpu_init() initializes state that is per-CPU. This function acts | |
752 | * as a 'CPU state barrier', nothing should get across. | |
753 | */ | |
244fd545 | 754 | void __cpuinit |
1da177e4 LT |
755 | cpu_init (void) |
756 | { | |
244fd545 | 757 | extern void __cpuinit ia64_mmu_init (void *); |
1da177e4 LT |
758 | unsigned long num_phys_stacked; |
759 | pal_vm_info_2_u_t vmi; | |
760 | unsigned int max_ctx; | |
761 | struct cpuinfo_ia64 *cpu_info; | |
762 | void *cpu_data; | |
763 | ||
764 | cpu_data = per_cpu_init(); | |
765 | ||
766 | /* | |
767 | * We set ar.k3 so that assembly code in MCA handler can compute | |
768 | * physical addresses of per cpu variables with a simple: | |
769 | * phys = ar.k3 + &per_cpu_var | |
770 | */ | |
771 | ia64_set_kr(IA64_KR_PER_CPU_DATA, | |
772 | ia64_tpa(cpu_data) - (long) __per_cpu_start); | |
773 | ||
774 | get_max_cacheline_size(); | |
775 | ||
776 | /* | |
777 | * We can't pass "local_cpu_data" to identify_cpu() because we haven't called | |
778 | * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it | |
779 | * depends on the data returned by identify_cpu(). We break the dependency by | |
780 | * accessing cpu_data() through the canonical per-CPU address. | |
781 | */ | |
782 | cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); | |
783 | identify_cpu(cpu_info); | |
784 | ||
785 | #ifdef CONFIG_MCKINLEY | |
786 | { | |
787 | # define FEATURE_SET 16 | |
788 | struct ia64_pal_retval iprv; | |
789 | ||
790 | if (cpu_info->family == 0x1f) { | |
791 | PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); | |
792 | if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) | |
793 | PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, | |
794 | (iprv.v1 | 0x80), FEATURE_SET, 0); | |
795 | } | |
796 | } | |
797 | #endif | |
798 | ||
799 | /* Clear the stack memory reserved for pt_regs: */ | |
6450578f | 800 | memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); |
1da177e4 LT |
801 | |
802 | ia64_set_kr(IA64_KR_FPU_OWNER, 0); | |
803 | ||
804 | /* | |
805 | * Initialize the page-table base register to a global | |
806 | * directory with all zeroes. This ensure that we can handle | |
807 | * TLB-misses to user address-space even before we created the | |
808 | * first user address-space. This may happen, e.g., due to | |
809 | * aggressive use of lfetch.fault. | |
810 | */ | |
811 | ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); | |
812 | ||
813 | /* | |
86ebacd3 TL |
814 | * Initialize default control register to defer speculative faults except |
815 | * for those arising from TLB misses, which are not deferred. The | |
1da177e4 LT |
816 | * kernel MUST NOT depend on a particular setting of these bits (in other words, |
817 | * the kernel must have recovery code for all speculative accesses). Turn on | |
818 | * dcr.lc as per recommendation by the architecture team. Most IA-32 apps | |
819 | * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll | |
820 | * be fine). | |
821 | */ | |
822 | ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR | |
823 | | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); | |
824 | atomic_inc(&init_mm.mm_count); | |
825 | current->active_mm = &init_mm; | |
826 | if (current->mm) | |
827 | BUG(); | |
828 | ||
829 | ia64_mmu_init(ia64_imva(cpu_data)); | |
830 | ia64_mca_cpu_init(ia64_imva(cpu_data)); | |
831 | ||
832 | #ifdef CONFIG_IA32_SUPPORT | |
833 | ia32_cpu_init(); | |
834 | #endif | |
835 | ||
836 | /* Clear ITC to eliminiate sched_clock() overflows in human time. */ | |
837 | ia64_set_itc(0); | |
838 | ||
839 | /* disable all local interrupt sources: */ | |
840 | ia64_set_itv(1 << 16); | |
841 | ia64_set_lrr0(1 << 16); | |
842 | ia64_set_lrr1(1 << 16); | |
843 | ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); | |
844 | ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); | |
845 | ||
846 | /* clear TPR & XTP to enable all interrupt classes: */ | |
847 | ia64_setreg(_IA64_REG_CR_TPR, 0); | |
848 | #ifdef CONFIG_SMP | |
849 | normal_xtp(); | |
850 | #endif | |
851 | ||
852 | /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ | |
853 | if (ia64_pal_vm_summary(NULL, &vmi) == 0) | |
854 | max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; | |
855 | else { | |
856 | printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); | |
857 | max_ctx = (1U << 15) - 1; /* use architected minimum */ | |
858 | } | |
859 | while (max_ctx < ia64_ctx.max_ctx) { | |
860 | unsigned int old = ia64_ctx.max_ctx; | |
861 | if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) | |
862 | break; | |
863 | } | |
864 | ||
865 | if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { | |
866 | printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " | |
867 | "stacked regs\n"); | |
868 | num_phys_stacked = 96; | |
869 | } | |
870 | /* size of physical stacked register partition plus 8 bytes: */ | |
871 | __get_cpu_var(ia64_phys_stacked_size_p8) = num_phys_stacked*8 + 8; | |
872 | platform_cpu_init(); | |
6c4fa560 | 873 | pm_idle = default_idle; |
1da177e4 LT |
874 | } |
875 | ||
4dc7a0bb IM |
876 | /* |
877 | * On SMP systems, when the scheduler does migration-cost autodetection, | |
878 | * it needs a way to flush as much of the CPU's caches as possible. | |
879 | */ | |
880 | void sched_cacheflush(void) | |
881 | { | |
882 | ia64_sal_cache_flush(3); | |
883 | } | |
884 | ||
244fd545 | 885 | void __init |
1da177e4 LT |
886 | check_bugs (void) |
887 | { | |
888 | ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, | |
889 | (unsigned long) __end___mckinley_e9_bundles); | |
890 | } | |
3ed3bce8 MD |
891 | |
892 | static int __init run_dmi_scan(void) | |
893 | { | |
894 | dmi_scan_machine(); | |
895 | return 0; | |
896 | } | |
897 | core_initcall(run_dmi_scan); |