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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> | |
894673ee | 38 | #include <linux/screen_info.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> |
a7956113 ZN |
46 | #include <linux/kexec.h> |
47 | #include <linux/crash_dump.h> | |
1da177e4 LT |
48 | |
49 | #include <asm/ia32.h> | |
50 | #include <asm/machvec.h> | |
51 | #include <asm/mca.h> | |
52 | #include <asm/meminit.h> | |
53 | #include <asm/page.h> | |
54 | #include <asm/patch.h> | |
55 | #include <asm/pgtable.h> | |
56 | #include <asm/processor.h> | |
57 | #include <asm/sal.h> | |
58 | #include <asm/sections.h> | |
1da177e4 LT |
59 | #include <asm/setup.h> |
60 | #include <asm/smp.h> | |
61 | #include <asm/system.h> | |
62 | #include <asm/unistd.h> | |
4dc7a0bb | 63 | #include <asm/system.h> |
1da177e4 LT |
64 | |
65 | #if defined(CONFIG_SMP) && (IA64_CPU_SIZE > PAGE_SIZE) | |
66 | # error "struct cpuinfo_ia64 too big!" | |
67 | #endif | |
68 | ||
69 | #ifdef CONFIG_SMP | |
70 | unsigned long __per_cpu_offset[NR_CPUS]; | |
71 | EXPORT_SYMBOL(__per_cpu_offset); | |
72 | #endif | |
73 | ||
d6e56a2a TL |
74 | extern void ia64_setup_printk_clock(void); |
75 | ||
1da177e4 LT |
76 | DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info); |
77 | DEFINE_PER_CPU(unsigned long, local_per_cpu_offset); | |
1da177e4 LT |
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 | }; | |
d719948e | 93 | extern char _text[], _end[], _etext[]; |
be379124 | 94 | |
1da177e4 | 95 | unsigned long ia64_max_cacheline_size; |
e1531b42 JL |
96 | |
97 | int dma_get_cache_alignment(void) | |
98 | { | |
99 | return ia64_max_cacheline_size; | |
100 | } | |
101 | EXPORT_SYMBOL(dma_get_cache_alignment); | |
102 | ||
1da177e4 LT |
103 | unsigned long ia64_iobase; /* virtual address for I/O accesses */ |
104 | EXPORT_SYMBOL(ia64_iobase); | |
105 | struct io_space io_space[MAX_IO_SPACES]; | |
106 | EXPORT_SYMBOL(io_space); | |
107 | unsigned int num_io_spaces; | |
108 | ||
08357f82 ZM |
109 | /* |
110 | * "flush_icache_range()" needs to know what processor dependent stride size to use | |
111 | * when it makes i-cache(s) coherent with d-caches. | |
112 | */ | |
113 | #define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */ | |
114 | unsigned long ia64_i_cache_stride_shift = ~0; | |
115 | ||
1da177e4 LT |
116 | /* |
117 | * The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This | |
118 | * mask specifies a mask of address bits that must be 0 in order for two buffers to be | |
119 | * mergeable by the I/O MMU (i.e., the end address of the first buffer and the start | |
120 | * address of the second buffer must be aligned to (merge_mask+1) in order to be | |
121 | * mergeable). By default, we assume there is no I/O MMU which can merge physically | |
122 | * discontiguous buffers, so we set the merge_mask to ~0UL, which corresponds to a iommu | |
123 | * page-size of 2^64. | |
124 | */ | |
125 | unsigned long ia64_max_iommu_merge_mask = ~0UL; | |
126 | EXPORT_SYMBOL(ia64_max_iommu_merge_mask); | |
127 | ||
128 | /* | |
129 | * We use a special marker for the end of memory and it uses the extra (+1) slot | |
130 | */ | |
dae28066 KC |
131 | struct rsvd_region rsvd_region[IA64_MAX_RSVD_REGIONS + 1] __initdata; |
132 | int num_rsvd_regions __initdata; | |
1da177e4 LT |
133 | |
134 | ||
135 | /* | |
136 | * Filter incoming memory segments based on the primitive map created from the boot | |
137 | * parameters. Segments contained in the map are removed from the memory ranges. A | |
138 | * caller-specified function is called with the memory ranges that remain after filtering. | |
139 | * This routine does not assume the incoming segments are sorted. | |
140 | */ | |
dae28066 | 141 | int __init |
1da177e4 LT |
142 | filter_rsvd_memory (unsigned long start, unsigned long end, void *arg) |
143 | { | |
144 | unsigned long range_start, range_end, prev_start; | |
145 | void (*func)(unsigned long, unsigned long, int); | |
146 | int i; | |
147 | ||
148 | #if IGNORE_PFN0 | |
149 | if (start == PAGE_OFFSET) { | |
150 | printk(KERN_WARNING "warning: skipping physical page 0\n"); | |
151 | start += PAGE_SIZE; | |
152 | if (start >= end) return 0; | |
153 | } | |
154 | #endif | |
155 | /* | |
156 | * lowest possible address(walker uses virtual) | |
157 | */ | |
158 | prev_start = PAGE_OFFSET; | |
159 | func = arg; | |
160 | ||
161 | for (i = 0; i < num_rsvd_regions; ++i) { | |
162 | range_start = max(start, prev_start); | |
163 | range_end = min(end, rsvd_region[i].start); | |
164 | ||
165 | if (range_start < range_end) | |
166 | call_pernode_memory(__pa(range_start), range_end - range_start, func); | |
167 | ||
168 | /* nothing more available in this segment */ | |
169 | if (range_end == end) return 0; | |
170 | ||
171 | prev_start = rsvd_region[i].end; | |
172 | } | |
173 | /* end of memory marker allows full processing inside loop body */ | |
174 | return 0; | |
175 | } | |
176 | ||
dae28066 | 177 | static void __init |
1da177e4 LT |
178 | sort_regions (struct rsvd_region *rsvd_region, int max) |
179 | { | |
180 | int j; | |
181 | ||
182 | /* simple bubble sorting */ | |
183 | while (max--) { | |
184 | for (j = 0; j < max; ++j) { | |
185 | if (rsvd_region[j].start > rsvd_region[j+1].start) { | |
186 | struct rsvd_region tmp; | |
187 | tmp = rsvd_region[j]; | |
188 | rsvd_region[j] = rsvd_region[j + 1]; | |
189 | rsvd_region[j + 1] = tmp; | |
190 | } | |
191 | } | |
192 | } | |
193 | } | |
194 | ||
be379124 KA |
195 | /* |
196 | * Request address space for all standard resources | |
197 | */ | |
198 | static int __init register_memory(void) | |
199 | { | |
200 | code_resource.start = ia64_tpa(_text); | |
201 | code_resource.end = ia64_tpa(_etext) - 1; | |
202 | data_resource.start = ia64_tpa(_etext); | |
d719948e | 203 | data_resource.end = ia64_tpa(_end) - 1; |
be379124 KA |
204 | efi_initialize_iomem_resources(&code_resource, &data_resource); |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | __initcall(register_memory); | |
210 | ||
1da177e4 LT |
211 | /** |
212 | * reserve_memory - setup reserved memory areas | |
213 | * | |
214 | * Setup the reserved memory areas set aside for the boot parameters, | |
215 | * initrd, etc. There are currently %IA64_MAX_RSVD_REGIONS defined, | |
216 | * see include/asm-ia64/meminit.h if you need to define more. | |
217 | */ | |
dae28066 | 218 | void __init |
1da177e4 LT |
219 | reserve_memory (void) |
220 | { | |
221 | int n = 0; | |
222 | ||
223 | /* | |
224 | * none of the entries in this table overlap | |
225 | */ | |
226 | rsvd_region[n].start = (unsigned long) ia64_boot_param; | |
227 | rsvd_region[n].end = rsvd_region[n].start + sizeof(*ia64_boot_param); | |
228 | n++; | |
229 | ||
230 | rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->efi_memmap); | |
231 | rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->efi_memmap_size; | |
232 | n++; | |
233 | ||
234 | rsvd_region[n].start = (unsigned long) __va(ia64_boot_param->command_line); | |
235 | rsvd_region[n].end = (rsvd_region[n].start | |
236 | + strlen(__va(ia64_boot_param->command_line)) + 1); | |
237 | n++; | |
238 | ||
239 | rsvd_region[n].start = (unsigned long) ia64_imva((void *)KERNEL_START); | |
240 | rsvd_region[n].end = (unsigned long) ia64_imva(_end); | |
241 | n++; | |
242 | ||
243 | #ifdef CONFIG_BLK_DEV_INITRD | |
244 | if (ia64_boot_param->initrd_start) { | |
245 | rsvd_region[n].start = (unsigned long)__va(ia64_boot_param->initrd_start); | |
246 | rsvd_region[n].end = rsvd_region[n].start + ia64_boot_param->initrd_size; | |
247 | n++; | |
248 | } | |
249 | #endif | |
250 | ||
cee87af2 MD |
251 | #ifdef CONFIG_PROC_VMCORE |
252 | if (reserve_elfcorehdr(&rsvd_region[n].start, | |
253 | &rsvd_region[n].end) == 0) | |
254 | n++; | |
255 | #endif | |
256 | ||
d8c97d5f TL |
257 | efi_memmap_init(&rsvd_region[n].start, &rsvd_region[n].end); |
258 | n++; | |
259 | ||
a7956113 ZN |
260 | #ifdef CONFIG_KEXEC |
261 | /* crashkernel=size@offset specifies the size to reserve for a crash | |
ad1c3ba7 | 262 | * kernel. If offset is 0, then it is determined automatically. |
a7956113 ZN |
263 | * By reserving this memory we guarantee that linux never set's it |
264 | * up as a DMA target.Useful for holding code to do something | |
265 | * appropriate after a kernel panic. | |
266 | */ | |
267 | { | |
a8d91b84 | 268 | char *from = strstr(boot_command_line, "crashkernel="); |
a7956113 ZN |
269 | unsigned long base, size; |
270 | if (from) { | |
271 | size = memparse(from + 12, &from); | |
ad1c3ba7 H |
272 | if (*from == '@') |
273 | base = memparse(from+1, &from); | |
274 | else | |
275 | base = 0; | |
a7956113 | 276 | if (size) { |
ad1c3ba7 H |
277 | if (!base) { |
278 | sort_regions(rsvd_region, n); | |
279 | base = kdump_find_rsvd_region(size, | |
280 | rsvd_region, n); | |
281 | } | |
a7956113 ZN |
282 | if (base != ~0UL) { |
283 | rsvd_region[n].start = | |
284 | (unsigned long)__va(base); | |
285 | rsvd_region[n].end = | |
286 | (unsigned long)__va(base + size); | |
287 | n++; | |
288 | crashk_res.start = base; | |
289 | crashk_res.end = base + size - 1; | |
290 | } | |
291 | } | |
292 | } | |
293 | efi_memmap_res.start = ia64_boot_param->efi_memmap; | |
294 | efi_memmap_res.end = efi_memmap_res.start + | |
295 | ia64_boot_param->efi_memmap_size; | |
296 | boot_param_res.start = __pa(ia64_boot_param); | |
297 | boot_param_res.end = boot_param_res.start + | |
298 | sizeof(*ia64_boot_param); | |
299 | } | |
300 | #endif | |
1da177e4 LT |
301 | /* end of memory marker */ |
302 | rsvd_region[n].start = ~0UL; | |
303 | rsvd_region[n].end = ~0UL; | |
304 | n++; | |
305 | ||
306 | num_rsvd_regions = n; | |
5eb1d63f | 307 | BUG_ON(IA64_MAX_RSVD_REGIONS + 1 < n); |
1da177e4 LT |
308 | |
309 | sort_regions(rsvd_region, num_rsvd_regions); | |
310 | } | |
311 | ||
a7956113 | 312 | |
1da177e4 LT |
313 | /** |
314 | * find_initrd - get initrd parameters from the boot parameter structure | |
315 | * | |
316 | * Grab the initrd start and end from the boot parameter struct given us by | |
317 | * the boot loader. | |
318 | */ | |
dae28066 | 319 | void __init |
1da177e4 LT |
320 | find_initrd (void) |
321 | { | |
322 | #ifdef CONFIG_BLK_DEV_INITRD | |
323 | if (ia64_boot_param->initrd_start) { | |
324 | initrd_start = (unsigned long)__va(ia64_boot_param->initrd_start); | |
325 | initrd_end = initrd_start+ia64_boot_param->initrd_size; | |
326 | ||
327 | printk(KERN_INFO "Initial ramdisk at: 0x%lx (%lu bytes)\n", | |
328 | initrd_start, ia64_boot_param->initrd_size); | |
329 | } | |
330 | #endif | |
331 | } | |
332 | ||
333 | static void __init | |
334 | io_port_init (void) | |
335 | { | |
1da177e4 LT |
336 | unsigned long phys_iobase; |
337 | ||
338 | /* | |
44c45120 BH |
339 | * Set `iobase' based on the EFI memory map or, failing that, the |
340 | * value firmware left in ar.k0. | |
1da177e4 | 341 | * |
44c45120 BH |
342 | * Note that in ia32 mode, IN/OUT instructions use ar.k0 to compute |
343 | * the port's virtual address, so ia32_load_state() loads it with a | |
344 | * user virtual address. But in ia64 mode, glibc uses the | |
345 | * *physical* address in ar.k0 to mmap the appropriate area from | |
346 | * /dev/mem, and the inX()/outX() interfaces use MMIO. In both | |
347 | * cases, user-mode can only use the legacy 0-64K I/O port space. | |
348 | * | |
349 | * ar.k0 is not involved in kernel I/O port accesses, which can use | |
350 | * any of the I/O port spaces and are done via MMIO using the | |
351 | * virtual mmio_base from the appropriate io_space[]. | |
1da177e4 LT |
352 | */ |
353 | phys_iobase = efi_get_iobase(); | |
44c45120 | 354 | if (!phys_iobase) { |
1da177e4 | 355 | phys_iobase = ia64_get_kr(IA64_KR_IO_BASE); |
44c45120 BH |
356 | printk(KERN_INFO "No I/O port range found in EFI memory map, " |
357 | "falling back to AR.KR0 (0x%lx)\n", phys_iobase); | |
1da177e4 LT |
358 | } |
359 | ia64_iobase = (unsigned long) ioremap(phys_iobase, 0); | |
44c45120 | 360 | ia64_set_kr(IA64_KR_IO_BASE, __pa(ia64_iobase)); |
1da177e4 LT |
361 | |
362 | /* setup legacy IO port space */ | |
363 | io_space[0].mmio_base = ia64_iobase; | |
364 | io_space[0].sparse = 1; | |
365 | num_io_spaces = 1; | |
366 | } | |
367 | ||
368 | /** | |
369 | * early_console_setup - setup debugging console | |
370 | * | |
371 | * Consoles started here require little enough setup that we can start using | |
372 | * them very early in the boot process, either right after the machine | |
373 | * vector initialization, or even before if the drivers can detect their hw. | |
374 | * | |
375 | * Returns non-zero if a console couldn't be setup. | |
376 | */ | |
377 | static inline int __init | |
378 | early_console_setup (char *cmdline) | |
379 | { | |
66b7f8a3 MM |
380 | int earlycons = 0; |
381 | ||
1da177e4 LT |
382 | #ifdef CONFIG_SERIAL_SGI_L1_CONSOLE |
383 | { | |
384 | extern int sn_serial_console_early_setup(void); | |
385 | if (!sn_serial_console_early_setup()) | |
66b7f8a3 | 386 | earlycons++; |
1da177e4 LT |
387 | } |
388 | #endif | |
389 | #ifdef CONFIG_EFI_PCDP | |
390 | if (!efi_setup_pcdp_console(cmdline)) | |
66b7f8a3 | 391 | earlycons++; |
1da177e4 | 392 | #endif |
1da177e4 | 393 | |
66b7f8a3 | 394 | return (earlycons) ? 0 : -1; |
1da177e4 LT |
395 | } |
396 | ||
397 | static inline void | |
398 | mark_bsp_online (void) | |
399 | { | |
400 | #ifdef CONFIG_SMP | |
401 | /* If we register an early console, allow CPU 0 to printk */ | |
402 | cpu_set(smp_processor_id(), cpu_online_map); | |
403 | #endif | |
404 | } | |
405 | ||
e927ecb0 | 406 | #ifdef CONFIG_SMP |
244fd545 | 407 | static void __init |
e927ecb0 SS |
408 | check_for_logical_procs (void) |
409 | { | |
410 | pal_logical_to_physical_t info; | |
411 | s64 status; | |
412 | ||
413 | status = ia64_pal_logical_to_phys(0, &info); | |
414 | if (status == -1) { | |
415 | printk(KERN_INFO "No logical to physical processor mapping " | |
416 | "available\n"); | |
417 | return; | |
418 | } | |
419 | if (status) { | |
420 | printk(KERN_ERR "ia64_pal_logical_to_phys failed with %ld\n", | |
421 | status); | |
422 | return; | |
423 | } | |
424 | /* | |
425 | * Total number of siblings that BSP has. Though not all of them | |
426 | * may have booted successfully. The correct number of siblings | |
427 | * booted is in info.overview_num_log. | |
428 | */ | |
429 | smp_num_siblings = info.overview_tpc; | |
430 | smp_num_cpucores = info.overview_cpp; | |
431 | } | |
432 | #endif | |
433 | ||
a5b00bb4 H |
434 | static __initdata int nomca; |
435 | static __init int setup_nomca(char *s) | |
436 | { | |
437 | nomca = 1; | |
438 | return 0; | |
439 | } | |
440 | early_param("nomca", setup_nomca); | |
441 | ||
45a98fc6 H |
442 | #ifdef CONFIG_PROC_VMCORE |
443 | /* elfcorehdr= specifies the location of elf core header | |
444 | * stored by the crashed kernel. | |
445 | */ | |
446 | static int __init parse_elfcorehdr(char *arg) | |
447 | { | |
448 | if (!arg) | |
449 | return -EINVAL; | |
450 | ||
451 | elfcorehdr_addr = memparse(arg, &arg); | |
452 | return 0; | |
453 | } | |
454 | early_param("elfcorehdr", parse_elfcorehdr); | |
cee87af2 MD |
455 | |
456 | int __init reserve_elfcorehdr(unsigned long *start, unsigned long *end) | |
457 | { | |
458 | unsigned long length; | |
459 | ||
460 | /* We get the address using the kernel command line, | |
461 | * but the size is extracted from the EFI tables. | |
462 | * Both address and size are required for reservation | |
463 | * to work properly. | |
464 | */ | |
465 | ||
466 | if (elfcorehdr_addr >= ELFCORE_ADDR_MAX) | |
467 | return -EINVAL; | |
468 | ||
469 | if ((length = vmcore_find_descriptor_size(elfcorehdr_addr)) == 0) { | |
470 | elfcorehdr_addr = ELFCORE_ADDR_MAX; | |
471 | return -EINVAL; | |
472 | } | |
473 | ||
474 | *start = (unsigned long)__va(elfcorehdr_addr); | |
475 | *end = *start + length; | |
476 | return 0; | |
477 | } | |
478 | ||
45a98fc6 H |
479 | #endif /* CONFIG_PROC_VMCORE */ |
480 | ||
1da177e4 LT |
481 | void __init |
482 | setup_arch (char **cmdline_p) | |
483 | { | |
484 | unw_init(); | |
485 | ||
486 | ia64_patch_vtop((u64) __start___vtop_patchlist, (u64) __end___vtop_patchlist); | |
487 | ||
488 | *cmdline_p = __va(ia64_boot_param->command_line); | |
a8d91b84 | 489 | strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE); |
1da177e4 LT |
490 | |
491 | efi_init(); | |
492 | io_port_init(); | |
493 | ||
a5b00bb4 H |
494 | parse_early_param(); |
495 | ||
1da177e4 | 496 | #ifdef CONFIG_IA64_GENERIC |
a5b00bb4 | 497 | machvec_init(NULL); |
1da177e4 LT |
498 | #endif |
499 | ||
500 | if (early_console_setup(*cmdline_p) == 0) | |
501 | mark_bsp_online(); | |
502 | ||
888ba6c6 | 503 | #ifdef CONFIG_ACPI |
1da177e4 LT |
504 | /* Initialize the ACPI boot-time table parser */ |
505 | acpi_table_init(); | |
506 | # ifdef CONFIG_ACPI_NUMA | |
507 | acpi_numa_init(); | |
508 | # endif | |
509 | #else | |
510 | # ifdef CONFIG_SMP | |
511 | smp_build_cpu_map(); /* happens, e.g., with the Ski simulator */ | |
512 | # endif | |
513 | #endif /* CONFIG_APCI_BOOT */ | |
514 | ||
515 | find_memory(); | |
516 | ||
517 | /* process SAL system table: */ | |
b2c99e3c | 518 | ia64_sal_init(__va(efi.sal_systab)); |
1da177e4 | 519 | |
d6e56a2a TL |
520 | ia64_setup_printk_clock(); |
521 | ||
1da177e4 LT |
522 | #ifdef CONFIG_SMP |
523 | cpu_physical_id(0) = hard_smp_processor_id(); | |
e927ecb0 SS |
524 | |
525 | cpu_set(0, cpu_sibling_map[0]); | |
526 | cpu_set(0, cpu_core_map[0]); | |
527 | ||
528 | check_for_logical_procs(); | |
529 | if (smp_num_cpucores > 1) | |
530 | printk(KERN_INFO | |
531 | "cpu package is Multi-Core capable: number of cores=%d\n", | |
532 | smp_num_cpucores); | |
533 | if (smp_num_siblings > 1) | |
534 | printk(KERN_INFO | |
535 | "cpu package is Multi-Threading capable: number of siblings=%d\n", | |
536 | smp_num_siblings); | |
1da177e4 LT |
537 | #endif |
538 | ||
539 | cpu_init(); /* initialize the bootstrap CPU */ | |
dcc17d1b | 540 | mmu_context_init(); /* initialize context_id bitmap */ |
1da177e4 | 541 | |
fa1d19e5 TH |
542 | check_sal_cache_flush(); |
543 | ||
888ba6c6 | 544 | #ifdef CONFIG_ACPI |
1da177e4 LT |
545 | acpi_boot_init(); |
546 | #endif | |
547 | ||
548 | #ifdef CONFIG_VT | |
549 | if (!conswitchp) { | |
550 | # if defined(CONFIG_DUMMY_CONSOLE) | |
551 | conswitchp = &dummy_con; | |
552 | # endif | |
553 | # if defined(CONFIG_VGA_CONSOLE) | |
554 | /* | |
555 | * Non-legacy systems may route legacy VGA MMIO range to system | |
556 | * memory. vga_con probes the MMIO hole, so memory looks like | |
557 | * a VGA device to it. The EFI memory map can tell us if it's | |
558 | * memory so we can avoid this problem. | |
559 | */ | |
560 | if (efi_mem_type(0xA0000) != EFI_CONVENTIONAL_MEMORY) | |
561 | conswitchp = &vga_con; | |
562 | # endif | |
563 | } | |
564 | #endif | |
565 | ||
566 | /* enable IA-64 Machine Check Abort Handling unless disabled */ | |
a5b00bb4 | 567 | if (!nomca) |
1da177e4 LT |
568 | ia64_mca_init(); |
569 | ||
570 | platform_setup(cmdline_p); | |
571 | paging_init(); | |
572 | } | |
573 | ||
574 | /* | |
72fdbdce | 575 | * Display cpu info for all CPUs. |
1da177e4 LT |
576 | */ |
577 | static int | |
578 | show_cpuinfo (struct seq_file *m, void *v) | |
579 | { | |
580 | #ifdef CONFIG_SMP | |
581 | # define lpj c->loops_per_jiffy | |
582 | # define cpunum c->cpu | |
583 | #else | |
584 | # define lpj loops_per_jiffy | |
585 | # define cpunum 0 | |
586 | #endif | |
587 | static struct { | |
588 | unsigned long mask; | |
589 | const char *feature_name; | |
590 | } feature_bits[] = { | |
591 | { 1UL << 0, "branchlong" }, | |
592 | { 1UL << 1, "spontaneous deferral"}, | |
593 | { 1UL << 2, "16-byte atomic ops" } | |
594 | }; | |
ae0af3e3 | 595 | char features[128], *cp, *sep; |
1da177e4 LT |
596 | struct cpuinfo_ia64 *c = v; |
597 | unsigned long mask; | |
38c0b2c2 | 598 | unsigned long proc_freq; |
ae0af3e3 | 599 | int i, size; |
1da177e4 LT |
600 | |
601 | mask = c->features; | |
602 | ||
1da177e4 | 603 | /* build the feature string: */ |
ae0af3e3 | 604 | memcpy(features, "standard", 9); |
1da177e4 | 605 | cp = features; |
ae0af3e3 AG |
606 | size = sizeof(features); |
607 | sep = ""; | |
608 | for (i = 0; i < ARRAY_SIZE(feature_bits) && size > 1; ++i) { | |
1da177e4 | 609 | if (mask & feature_bits[i].mask) { |
ae0af3e3 AG |
610 | cp += snprintf(cp, size, "%s%s", sep, |
611 | feature_bits[i].feature_name), | |
612 | sep = ", "; | |
1da177e4 | 613 | mask &= ~feature_bits[i].mask; |
ae0af3e3 | 614 | size = sizeof(features) - (cp - features); |
1da177e4 LT |
615 | } |
616 | } | |
ae0af3e3 AG |
617 | if (mask && size > 1) { |
618 | /* print unknown features as a hex value */ | |
619 | snprintf(cp, size, "%s0x%lx", sep, mask); | |
1da177e4 LT |
620 | } |
621 | ||
95235ca2 VP |
622 | proc_freq = cpufreq_quick_get(cpunum); |
623 | if (!proc_freq) | |
624 | proc_freq = c->proc_freq / 1000; | |
625 | ||
1da177e4 LT |
626 | seq_printf(m, |
627 | "processor : %d\n" | |
628 | "vendor : %s\n" | |
629 | "arch : IA-64\n" | |
76d08bb3 | 630 | "family : %u\n" |
1da177e4 | 631 | "model : %u\n" |
76d08bb3 | 632 | "model name : %s\n" |
1da177e4 LT |
633 | "revision : %u\n" |
634 | "archrev : %u\n" | |
ae0af3e3 | 635 | "features : %s\n" |
1da177e4 LT |
636 | "cpu number : %lu\n" |
637 | "cpu regs : %u\n" | |
8a3a78d1 | 638 | "cpu MHz : %lu.%03lu\n" |
1da177e4 | 639 | "itc MHz : %lu.%06lu\n" |
e927ecb0 | 640 | "BogoMIPS : %lu.%02lu\n", |
76d08bb3 TL |
641 | cpunum, c->vendor, c->family, c->model, |
642 | c->model_name, c->revision, c->archrev, | |
1da177e4 | 643 | features, c->ppn, c->number, |
95235ca2 | 644 | proc_freq / 1000, proc_freq % 1000, |
1da177e4 LT |
645 | c->itc_freq / 1000000, c->itc_freq % 1000000, |
646 | lpj*HZ/500000, (lpj*HZ/5000) % 100); | |
e927ecb0 | 647 | #ifdef CONFIG_SMP |
ce6e71ad | 648 | seq_printf(m, "siblings : %u\n", cpus_weight(cpu_core_map[cpunum])); |
e927ecb0 SS |
649 | if (c->threads_per_core > 1 || c->cores_per_socket > 1) |
650 | seq_printf(m, | |
651 | "physical id: %u\n" | |
652 | "core id : %u\n" | |
653 | "thread id : %u\n", | |
654 | c->socket_id, c->core_id, c->thread_id); | |
e927ecb0 SS |
655 | #endif |
656 | seq_printf(m,"\n"); | |
657 | ||
1da177e4 LT |
658 | return 0; |
659 | } | |
660 | ||
661 | static void * | |
662 | c_start (struct seq_file *m, loff_t *pos) | |
663 | { | |
664 | #ifdef CONFIG_SMP | |
665 | while (*pos < NR_CPUS && !cpu_isset(*pos, cpu_online_map)) | |
666 | ++*pos; | |
667 | #endif | |
668 | return *pos < NR_CPUS ? cpu_data(*pos) : NULL; | |
669 | } | |
670 | ||
671 | static void * | |
672 | c_next (struct seq_file *m, void *v, loff_t *pos) | |
673 | { | |
674 | ++*pos; | |
675 | return c_start(m, pos); | |
676 | } | |
677 | ||
678 | static void | |
679 | c_stop (struct seq_file *m, void *v) | |
680 | { | |
681 | } | |
682 | ||
683 | struct seq_operations cpuinfo_op = { | |
684 | .start = c_start, | |
685 | .next = c_next, | |
686 | .stop = c_stop, | |
687 | .show = show_cpuinfo | |
688 | }; | |
689 | ||
c5e83e3f JS |
690 | #define MAX_BRANDS 8 |
691 | static char brandname[MAX_BRANDS][128]; | |
76d08bb3 TL |
692 | |
693 | static char * __cpuinit | |
694 | get_model_name(__u8 family, __u8 model) | |
695 | { | |
c5e83e3f | 696 | static int overflow; |
76d08bb3 | 697 | char brand[128]; |
c5e83e3f | 698 | int i; |
76d08bb3 | 699 | |
75f6a1de | 700 | memcpy(brand, "Unknown", 8); |
76d08bb3 TL |
701 | if (ia64_pal_get_brand_info(brand)) { |
702 | if (family == 0x7) | |
703 | memcpy(brand, "Merced", 7); | |
704 | else if (family == 0x1f) switch (model) { | |
705 | case 0: memcpy(brand, "McKinley", 9); break; | |
706 | case 1: memcpy(brand, "Madison", 8); break; | |
707 | case 2: memcpy(brand, "Madison up to 9M cache", 23); break; | |
75f6a1de | 708 | } |
76d08bb3 | 709 | } |
c5e83e3f JS |
710 | for (i = 0; i < MAX_BRANDS; i++) |
711 | if (strcmp(brandname[i], brand) == 0) | |
712 | return brandname[i]; | |
713 | for (i = 0; i < MAX_BRANDS; i++) | |
714 | if (brandname[i][0] == '\0') | |
715 | return strcpy(brandname[i], brand); | |
716 | if (overflow++ == 0) | |
717 | printk(KERN_ERR | |
718 | "%s: Table overflow. Some processor model information will be missing\n", | |
719 | __FUNCTION__); | |
720 | return "Unknown"; | |
76d08bb3 TL |
721 | } |
722 | ||
244fd545 | 723 | static void __cpuinit |
1da177e4 LT |
724 | identify_cpu (struct cpuinfo_ia64 *c) |
725 | { | |
726 | union { | |
727 | unsigned long bits[5]; | |
728 | struct { | |
729 | /* id 0 & 1: */ | |
730 | char vendor[16]; | |
731 | ||
732 | /* id 2 */ | |
733 | u64 ppn; /* processor serial number */ | |
734 | ||
735 | /* id 3: */ | |
736 | unsigned number : 8; | |
737 | unsigned revision : 8; | |
738 | unsigned model : 8; | |
739 | unsigned family : 8; | |
740 | unsigned archrev : 8; | |
741 | unsigned reserved : 24; | |
742 | ||
743 | /* id 4: */ | |
744 | u64 features; | |
745 | } field; | |
746 | } cpuid; | |
747 | pal_vm_info_1_u_t vm1; | |
748 | pal_vm_info_2_u_t vm2; | |
749 | pal_status_t status; | |
750 | unsigned long impl_va_msb = 50, phys_addr_size = 44; /* Itanium defaults */ | |
751 | int i; | |
1da177e4 LT |
752 | for (i = 0; i < 5; ++i) |
753 | cpuid.bits[i] = ia64_get_cpuid(i); | |
754 | ||
755 | memcpy(c->vendor, cpuid.field.vendor, 16); | |
756 | #ifdef CONFIG_SMP | |
757 | c->cpu = smp_processor_id(); | |
e927ecb0 SS |
758 | |
759 | /* below default values will be overwritten by identify_siblings() | |
72fdbdce | 760 | * for Multi-Threading/Multi-Core capable CPUs |
e927ecb0 SS |
761 | */ |
762 | c->threads_per_core = c->cores_per_socket = c->num_log = 1; | |
763 | c->socket_id = -1; | |
764 | ||
765 | identify_siblings(c); | |
1da177e4 LT |
766 | #endif |
767 | c->ppn = cpuid.field.ppn; | |
768 | c->number = cpuid.field.number; | |
769 | c->revision = cpuid.field.revision; | |
770 | c->model = cpuid.field.model; | |
771 | c->family = cpuid.field.family; | |
772 | c->archrev = cpuid.field.archrev; | |
773 | c->features = cpuid.field.features; | |
76d08bb3 | 774 | c->model_name = get_model_name(c->family, c->model); |
1da177e4 LT |
775 | |
776 | status = ia64_pal_vm_summary(&vm1, &vm2); | |
777 | if (status == PAL_STATUS_SUCCESS) { | |
778 | impl_va_msb = vm2.pal_vm_info_2_s.impl_va_msb; | |
779 | phys_addr_size = vm1.pal_vm_info_1_s.phys_add_size; | |
780 | } | |
781 | c->unimpl_va_mask = ~((7L<<61) | ((1L << (impl_va_msb + 1)) - 1)); | |
782 | c->unimpl_pa_mask = ~((1L<<63) | ((1L << phys_addr_size) - 1)); | |
783 | } | |
784 | ||
0f7ac29e | 785 | void __init |
1da177e4 LT |
786 | setup_per_cpu_areas (void) |
787 | { | |
788 | /* start_kernel() requires this... */ | |
a6b14fa6 AR |
789 | #ifdef CONFIG_ACPI_HOTPLUG_CPU |
790 | prefill_possible_map(); | |
791 | #endif | |
1da177e4 LT |
792 | } |
793 | ||
08357f82 ZM |
794 | /* |
795 | * Calculate the max. cache line size. | |
796 | * | |
797 | * In addition, the minimum of the i-cache stride sizes is calculated for | |
798 | * "flush_icache_range()". | |
799 | */ | |
244fd545 | 800 | static void __cpuinit |
1da177e4 LT |
801 | get_max_cacheline_size (void) |
802 | { | |
803 | unsigned long line_size, max = 1; | |
804 | u64 l, levels, unique_caches; | |
805 | pal_cache_config_info_t cci; | |
806 | s64 status; | |
807 | ||
808 | status = ia64_pal_cache_summary(&levels, &unique_caches); | |
809 | if (status != 0) { | |
810 | printk(KERN_ERR "%s: ia64_pal_cache_summary() failed (status=%ld)\n", | |
811 | __FUNCTION__, status); | |
812 | max = SMP_CACHE_BYTES; | |
08357f82 ZM |
813 | /* Safest setup for "flush_icache_range()" */ |
814 | ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT; | |
1da177e4 LT |
815 | goto out; |
816 | } | |
817 | ||
818 | for (l = 0; l < levels; ++l) { | |
819 | status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2, | |
820 | &cci); | |
821 | if (status != 0) { | |
822 | printk(KERN_ERR | |
08357f82 | 823 | "%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n", |
1da177e4 LT |
824 | __FUNCTION__, l, status); |
825 | max = SMP_CACHE_BYTES; | |
08357f82 ZM |
826 | /* The safest setup for "flush_icache_range()" */ |
827 | cci.pcci_stride = I_CACHE_STRIDE_SHIFT; | |
828 | cci.pcci_unified = 1; | |
1da177e4 LT |
829 | } |
830 | line_size = 1 << cci.pcci_line_size; | |
831 | if (line_size > max) | |
832 | max = line_size; | |
08357f82 ZM |
833 | if (!cci.pcci_unified) { |
834 | status = ia64_pal_cache_config_info(l, | |
835 | /* cache_type (instruction)= */ 1, | |
836 | &cci); | |
837 | if (status != 0) { | |
838 | printk(KERN_ERR | |
839 | "%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n", | |
840 | __FUNCTION__, l, status); | |
841 | /* The safest setup for "flush_icache_range()" */ | |
842 | cci.pcci_stride = I_CACHE_STRIDE_SHIFT; | |
843 | } | |
844 | } | |
845 | if (cci.pcci_stride < ia64_i_cache_stride_shift) | |
846 | ia64_i_cache_stride_shift = cci.pcci_stride; | |
847 | } | |
1da177e4 LT |
848 | out: |
849 | if (max > ia64_max_cacheline_size) | |
850 | ia64_max_cacheline_size = max; | |
851 | } | |
852 | ||
853 | /* | |
854 | * cpu_init() initializes state that is per-CPU. This function acts | |
855 | * as a 'CPU state barrier', nothing should get across. | |
856 | */ | |
244fd545 | 857 | void __cpuinit |
1da177e4 LT |
858 | cpu_init (void) |
859 | { | |
244fd545 | 860 | extern void __cpuinit ia64_mmu_init (void *); |
a0776ec8 | 861 | static unsigned long max_num_phys_stacked = IA64_NUM_PHYS_STACK_REG; |
1da177e4 LT |
862 | unsigned long num_phys_stacked; |
863 | pal_vm_info_2_u_t vmi; | |
864 | unsigned int max_ctx; | |
865 | struct cpuinfo_ia64 *cpu_info; | |
866 | void *cpu_data; | |
867 | ||
868 | cpu_data = per_cpu_init(); | |
869 | ||
870 | /* | |
871 | * We set ar.k3 so that assembly code in MCA handler can compute | |
872 | * physical addresses of per cpu variables with a simple: | |
873 | * phys = ar.k3 + &per_cpu_var | |
874 | */ | |
875 | ia64_set_kr(IA64_KR_PER_CPU_DATA, | |
876 | ia64_tpa(cpu_data) - (long) __per_cpu_start); | |
877 | ||
878 | get_max_cacheline_size(); | |
879 | ||
880 | /* | |
881 | * We can't pass "local_cpu_data" to identify_cpu() because we haven't called | |
882 | * ia64_mmu_init() yet. And we can't call ia64_mmu_init() first because it | |
883 | * depends on the data returned by identify_cpu(). We break the dependency by | |
884 | * accessing cpu_data() through the canonical per-CPU address. | |
885 | */ | |
886 | cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start); | |
887 | identify_cpu(cpu_info); | |
888 | ||
889 | #ifdef CONFIG_MCKINLEY | |
890 | { | |
891 | # define FEATURE_SET 16 | |
892 | struct ia64_pal_retval iprv; | |
893 | ||
894 | if (cpu_info->family == 0x1f) { | |
895 | PAL_CALL_PHYS(iprv, PAL_PROC_GET_FEATURES, 0, FEATURE_SET, 0); | |
896 | if ((iprv.status == 0) && (iprv.v0 & 0x80) && (iprv.v2 & 0x80)) | |
897 | PAL_CALL_PHYS(iprv, PAL_PROC_SET_FEATURES, | |
898 | (iprv.v1 | 0x80), FEATURE_SET, 0); | |
899 | } | |
900 | } | |
901 | #endif | |
902 | ||
903 | /* Clear the stack memory reserved for pt_regs: */ | |
6450578f | 904 | memset(task_pt_regs(current), 0, sizeof(struct pt_regs)); |
1da177e4 LT |
905 | |
906 | ia64_set_kr(IA64_KR_FPU_OWNER, 0); | |
907 | ||
908 | /* | |
909 | * Initialize the page-table base register to a global | |
910 | * directory with all zeroes. This ensure that we can handle | |
911 | * TLB-misses to user address-space even before we created the | |
912 | * first user address-space. This may happen, e.g., due to | |
913 | * aggressive use of lfetch.fault. | |
914 | */ | |
915 | ia64_set_kr(IA64_KR_PT_BASE, __pa(ia64_imva(empty_zero_page))); | |
916 | ||
917 | /* | |
86ebacd3 TL |
918 | * Initialize default control register to defer speculative faults except |
919 | * for those arising from TLB misses, which are not deferred. The | |
1da177e4 LT |
920 | * kernel MUST NOT depend on a particular setting of these bits (in other words, |
921 | * the kernel must have recovery code for all speculative accesses). Turn on | |
922 | * dcr.lc as per recommendation by the architecture team. Most IA-32 apps | |
923 | * shouldn't be affected by this (moral: keep your ia32 locks aligned and you'll | |
924 | * be fine). | |
925 | */ | |
926 | ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR | |
927 | | IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC)); | |
928 | atomic_inc(&init_mm.mm_count); | |
929 | current->active_mm = &init_mm; | |
930 | if (current->mm) | |
931 | BUG(); | |
932 | ||
933 | ia64_mmu_init(ia64_imva(cpu_data)); | |
934 | ia64_mca_cpu_init(ia64_imva(cpu_data)); | |
935 | ||
936 | #ifdef CONFIG_IA32_SUPPORT | |
937 | ia32_cpu_init(); | |
938 | #endif | |
939 | ||
72fdbdce | 940 | /* Clear ITC to eliminate sched_clock() overflows in human time. */ |
1da177e4 LT |
941 | ia64_set_itc(0); |
942 | ||
943 | /* disable all local interrupt sources: */ | |
944 | ia64_set_itv(1 << 16); | |
945 | ia64_set_lrr0(1 << 16); | |
946 | ia64_set_lrr1(1 << 16); | |
947 | ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); | |
948 | ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); | |
949 | ||
950 | /* clear TPR & XTP to enable all interrupt classes: */ | |
951 | ia64_setreg(_IA64_REG_CR_TPR, 0); | |
952 | #ifdef CONFIG_SMP | |
953 | normal_xtp(); | |
954 | #endif | |
955 | ||
956 | /* set ia64_ctx.max_rid to the maximum RID that is supported by all CPUs: */ | |
957 | if (ia64_pal_vm_summary(NULL, &vmi) == 0) | |
958 | max_ctx = (1U << (vmi.pal_vm_info_2_s.rid_size - 3)) - 1; | |
959 | else { | |
960 | printk(KERN_WARNING "cpu_init: PAL VM summary failed, assuming 18 RID bits\n"); | |
961 | max_ctx = (1U << 15) - 1; /* use architected minimum */ | |
962 | } | |
963 | while (max_ctx < ia64_ctx.max_ctx) { | |
964 | unsigned int old = ia64_ctx.max_ctx; | |
965 | if (cmpxchg(&ia64_ctx.max_ctx, old, max_ctx) == old) | |
966 | break; | |
967 | } | |
968 | ||
969 | if (ia64_pal_rse_info(&num_phys_stacked, NULL) != 0) { | |
970 | printk(KERN_WARNING "cpu_init: PAL RSE info failed; assuming 96 physical " | |
971 | "stacked regs\n"); | |
972 | num_phys_stacked = 96; | |
973 | } | |
974 | /* size of physical stacked register partition plus 8 bytes: */ | |
a0776ec8 KC |
975 | if (num_phys_stacked > max_num_phys_stacked) { |
976 | ia64_patch_phys_stack_reg(num_phys_stacked*8 + 8); | |
977 | max_num_phys_stacked = num_phys_stacked; | |
978 | } | |
1da177e4 | 979 | platform_cpu_init(); |
6c4fa560 | 980 | pm_idle = default_idle; |
1da177e4 LT |
981 | } |
982 | ||
4dc7a0bb IM |
983 | /* |
984 | * On SMP systems, when the scheduler does migration-cost autodetection, | |
985 | * it needs a way to flush as much of the CPU's caches as possible. | |
986 | */ | |
987 | void sched_cacheflush(void) | |
988 | { | |
989 | ia64_sal_cache_flush(3); | |
990 | } | |
991 | ||
244fd545 | 992 | void __init |
1da177e4 LT |
993 | check_bugs (void) |
994 | { | |
995 | ia64_patch_mckinley_e9((unsigned long) __start___mckinley_e9_bundles, | |
996 | (unsigned long) __end___mckinley_e9_bundles); | |
997 | } | |
3ed3bce8 MD |
998 | |
999 | static int __init run_dmi_scan(void) | |
1000 | { | |
1001 | dmi_scan_machine(); | |
1002 | return 0; | |
1003 | } | |
1004 | core_initcall(run_dmi_scan); |