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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/alpha/kernel/setup.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/alpha/kernel/setup.c')
-rw-r--r--arch/alpha/kernel/setup.c1486
1 files changed, 1486 insertions, 0 deletions
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
new file mode 100644
index 000000000000..b4e5f8ff2b25
--- /dev/null
+++ b/arch/alpha/kernel/setup.c
@@ -0,0 +1,1486 @@
1/*
2 * linux/arch/alpha/kernel/setup.c
3 *
4 * Copyright (C) 1995 Linus Torvalds
5 */
6
7/* 2.3.x bootmem, 1999 Andrea Arcangeli <andrea@suse.de> */
8
9/*
10 * Bootup setup stuff.
11 */
12
13#include <linux/sched.h>
14#include <linux/kernel.h>
15#include <linux/mm.h>
16#include <linux/stddef.h>
17#include <linux/unistd.h>
18#include <linux/ptrace.h>
19#include <linux/slab.h>
20#include <linux/user.h>
21#include <linux/a.out.h>
22#include <linux/tty.h>
23#include <linux/delay.h>
24#include <linux/config.h> /* CONFIG_ALPHA_LCA etc */
25#include <linux/mc146818rtc.h>
26#include <linux/console.h>
27#include <linux/errno.h>
28#include <linux/init.h>
29#include <linux/string.h>
30#include <linux/ioport.h>
31#include <linux/bootmem.h>
32#include <linux/pci.h>
33#include <linux/seq_file.h>
34#include <linux/root_dev.h>
35#include <linux/initrd.h>
36#include <linux/eisa.h>
37#ifdef CONFIG_MAGIC_SYSRQ
38#include <linux/sysrq.h>
39#include <linux/reboot.h>
40#endif
41#include <linux/notifier.h>
42#include <asm/setup.h>
43#include <asm/io.h>
44
45extern struct notifier_block *panic_notifier_list;
46static int alpha_panic_event(struct notifier_block *, unsigned long, void *);
47static struct notifier_block alpha_panic_block = {
48 alpha_panic_event,
49 NULL,
50 INT_MAX /* try to do it first */
51};
52
53#include <asm/uaccess.h>
54#include <asm/pgtable.h>
55#include <asm/system.h>
56#include <asm/hwrpb.h>
57#include <asm/dma.h>
58#include <asm/io.h>
59#include <asm/mmu_context.h>
60#include <asm/console.h>
61
62#include "proto.h"
63#include "pci_impl.h"
64
65
66struct hwrpb_struct *hwrpb;
67unsigned long srm_hae;
68
69int alpha_l1i_cacheshape;
70int alpha_l1d_cacheshape;
71int alpha_l2_cacheshape;
72int alpha_l3_cacheshape;
73
74#ifdef CONFIG_VERBOSE_MCHECK
75/* 0=minimum, 1=verbose, 2=all */
76/* These can be overridden via the command line, ie "verbose_mcheck=2") */
77unsigned long alpha_verbose_mcheck = CONFIG_VERBOSE_MCHECK_ON;
78#endif
79
80/* Which processor we booted from. */
81int boot_cpuid;
82
83/*
84 * Using SRM callbacks for initial console output. This works from
85 * setup_arch() time through the end of time_init(), as those places
86 * are under our (Alpha) control.
87
88 * "srmcons" specified in the boot command arguments allows us to
89 * see kernel messages during the period of time before the true
90 * console device is "registered" during console_init().
91 * As of this version (2.5.59), console_init() will call
92 * disable_early_printk() as the last action before initializing
93 * the console drivers. That's the last possible time srmcons can be
94 * unregistered without interfering with console behavior.
95 *
96 * By default, OFF; set it with a bootcommand arg of "srmcons" or
97 * "console=srm". The meaning of these two args is:
98 * "srmcons" - early callback prints
99 * "console=srm" - full callback based console, including early prints
100 */
101int srmcons_output = 0;
102
103/* Enforce a memory size limit; useful for testing. By default, none. */
104unsigned long mem_size_limit = 0;
105
106/* Set AGP GART window size (0 means disabled). */
107unsigned long alpha_agpgart_size = DEFAULT_AGP_APER_SIZE;
108
109#ifdef CONFIG_ALPHA_GENERIC
110struct alpha_machine_vector alpha_mv;
111int alpha_using_srm;
112#endif
113
114#define N(a) (sizeof(a)/sizeof(a[0]))
115
116static struct alpha_machine_vector *get_sysvec(unsigned long, unsigned long,
117 unsigned long);
118static struct alpha_machine_vector *get_sysvec_byname(const char *);
119static void get_sysnames(unsigned long, unsigned long, unsigned long,
120 char **, char **);
121static void determine_cpu_caches (unsigned int);
122
123static char command_line[COMMAND_LINE_SIZE];
124
125/*
126 * The format of "screen_info" is strange, and due to early
127 * i386-setup code. This is just enough to make the console
128 * code think we're on a VGA color display.
129 */
130
131struct screen_info screen_info = {
132 .orig_x = 0,
133 .orig_y = 25,
134 .orig_video_cols = 80,
135 .orig_video_lines = 25,
136 .orig_video_isVGA = 1,
137 .orig_video_points = 16
138};
139
140/*
141 * The direct map I/O window, if any. This should be the same
142 * for all busses, since it's used by virt_to_bus.
143 */
144
145unsigned long __direct_map_base;
146unsigned long __direct_map_size;
147
148/*
149 * Declare all of the machine vectors.
150 */
151
152/* GCC 2.7.2 (on alpha at least) is lame. It does not support either
153 __attribute__((weak)) or #pragma weak. Bypass it and talk directly
154 to the assembler. */
155
156#define WEAK(X) \
157 extern struct alpha_machine_vector X; \
158 asm(".weak "#X)
159
160WEAK(alcor_mv);
161WEAK(alphabook1_mv);
162WEAK(avanti_mv);
163WEAK(cabriolet_mv);
164WEAK(clipper_mv);
165WEAK(dp264_mv);
166WEAK(eb164_mv);
167WEAK(eb64p_mv);
168WEAK(eb66_mv);
169WEAK(eb66p_mv);
170WEAK(eiger_mv);
171WEAK(jensen_mv);
172WEAK(lx164_mv);
173WEAK(lynx_mv);
174WEAK(marvel_ev7_mv);
175WEAK(miata_mv);
176WEAK(mikasa_mv);
177WEAK(mikasa_primo_mv);
178WEAK(monet_mv);
179WEAK(nautilus_mv);
180WEAK(noname_mv);
181WEAK(noritake_mv);
182WEAK(noritake_primo_mv);
183WEAK(p2k_mv);
184WEAK(pc164_mv);
185WEAK(privateer_mv);
186WEAK(rawhide_mv);
187WEAK(ruffian_mv);
188WEAK(rx164_mv);
189WEAK(sable_mv);
190WEAK(sable_gamma_mv);
191WEAK(shark_mv);
192WEAK(sx164_mv);
193WEAK(takara_mv);
194WEAK(titan_mv);
195WEAK(webbrick_mv);
196WEAK(wildfire_mv);
197WEAK(xl_mv);
198WEAK(xlt_mv);
199
200#undef WEAK
201
202/*
203 * I/O resources inherited from PeeCees. Except for perhaps the
204 * turbochannel alphas, everyone has these on some sort of SuperIO chip.
205 *
206 * ??? If this becomes less standard, move the struct out into the
207 * machine vector.
208 */
209
210static void __init
211reserve_std_resources(void)
212{
213 static struct resource standard_io_resources[] = {
214 { .name = "rtc", .start = -1, .end = -1 },
215 { .name = "dma1", .start = 0x00, .end = 0x1f },
216 { .name = "pic1", .start = 0x20, .end = 0x3f },
217 { .name = "timer", .start = 0x40, .end = 0x5f },
218 { .name = "keyboard", .start = 0x60, .end = 0x6f },
219 { .name = "dma page reg", .start = 0x80, .end = 0x8f },
220 { .name = "pic2", .start = 0xa0, .end = 0xbf },
221 { .name = "dma2", .start = 0xc0, .end = 0xdf },
222 };
223
224 struct resource *io = &ioport_resource;
225 size_t i;
226
227 if (hose_head) {
228 struct pci_controller *hose;
229 for (hose = hose_head; hose; hose = hose->next)
230 if (hose->index == 0) {
231 io = hose->io_space;
232 break;
233 }
234 }
235
236 /* Fix up for the Jensen's queer RTC placement. */
237 standard_io_resources[0].start = RTC_PORT(0);
238 standard_io_resources[0].end = RTC_PORT(0) + 0x10;
239
240 for (i = 0; i < N(standard_io_resources); ++i)
241 request_resource(io, standard_io_resources+i);
242}
243
244#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
245#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
246#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
247#define PFN_MAX PFN_DOWN(0x80000000)
248#define for_each_mem_cluster(memdesc, cluster, i) \
249 for ((cluster) = (memdesc)->cluster, (i) = 0; \
250 (i) < (memdesc)->numclusters; (i)++, (cluster)++)
251
252static unsigned long __init
253get_mem_size_limit(char *s)
254{
255 unsigned long end = 0;
256 char *from = s;
257
258 end = simple_strtoul(from, &from, 0);
259 if ( *from == 'K' || *from == 'k' ) {
260 end = end << 10;
261 from++;
262 } else if ( *from == 'M' || *from == 'm' ) {
263 end = end << 20;
264 from++;
265 } else if ( *from == 'G' || *from == 'g' ) {
266 end = end << 30;
267 from++;
268 }
269 return end >> PAGE_SHIFT; /* Return the PFN of the limit. */
270}
271
272#ifdef CONFIG_BLK_DEV_INITRD
273void * __init
274move_initrd(unsigned long mem_limit)
275{
276 void *start;
277 unsigned long size;
278
279 size = initrd_end - initrd_start;
280 start = __alloc_bootmem(PAGE_ALIGN(size), PAGE_SIZE, 0);
281 if (!start || __pa(start) + size > mem_limit) {
282 initrd_start = initrd_end = 0;
283 return NULL;
284 }
285 memmove(start, (void *)initrd_start, size);
286 initrd_start = (unsigned long)start;
287 initrd_end = initrd_start + size;
288 printk("initrd moved to %p\n", start);
289 return start;
290}
291#endif
292
293#ifndef CONFIG_DISCONTIGMEM
294static void __init
295setup_memory(void *kernel_end)
296{
297 struct memclust_struct * cluster;
298 struct memdesc_struct * memdesc;
299 unsigned long start_kernel_pfn, end_kernel_pfn;
300 unsigned long bootmap_size, bootmap_pages, bootmap_start;
301 unsigned long start, end;
302 unsigned long i;
303
304 /* Find free clusters, and init and free the bootmem accordingly. */
305 memdesc = (struct memdesc_struct *)
306 (hwrpb->mddt_offset + (unsigned long) hwrpb);
307
308 for_each_mem_cluster(memdesc, cluster, i) {
309 printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
310 i, cluster->usage, cluster->start_pfn,
311 cluster->start_pfn + cluster->numpages);
312
313 /* Bit 0 is console/PALcode reserved. Bit 1 is
314 non-volatile memory -- we might want to mark
315 this for later. */
316 if (cluster->usage & 3)
317 continue;
318
319 end = cluster->start_pfn + cluster->numpages;
320 if (end > max_low_pfn)
321 max_low_pfn = end;
322 }
323
324 /*
325 * Except for the NUMA systems (wildfire, marvel) all of the
326 * Alpha systems we run on support 32GB of memory or less.
327 * Since the NUMA systems introduce large holes in memory addressing,
328 * we can get into a situation where there is not enough contiguous
329 * memory for the memory map.
330 *
331 * Limit memory to the first 32GB to limit the NUMA systems to
332 * memory on their first node (wildfire) or 2 (marvel) to avoid
333 * not being able to produce the memory map. In order to access
334 * all of the memory on the NUMA systems, build with discontiguous
335 * memory support.
336 *
337 * If the user specified a memory limit, let that memory limit stand.
338 */
339 if (!mem_size_limit)
340 mem_size_limit = (32ul * 1024 * 1024 * 1024) >> PAGE_SHIFT;
341
342 if (mem_size_limit && max_low_pfn >= mem_size_limit)
343 {
344 printk("setup: forcing memory size to %ldK (from %ldK).\n",
345 mem_size_limit << (PAGE_SHIFT - 10),
346 max_low_pfn << (PAGE_SHIFT - 10));
347 max_low_pfn = mem_size_limit;
348 }
349
350 /* Find the bounds of kernel memory. */
351 start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
352 end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
353 bootmap_start = -1;
354
355 try_again:
356 if (max_low_pfn <= end_kernel_pfn)
357 panic("not enough memory to boot");
358
359 /* We need to know how many physically contiguous pages
360 we'll need for the bootmap. */
361 bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
362
363 /* Now find a good region where to allocate the bootmap. */
364 for_each_mem_cluster(memdesc, cluster, i) {
365 if (cluster->usage & 3)
366 continue;
367
368 start = cluster->start_pfn;
369 end = start + cluster->numpages;
370 if (start >= max_low_pfn)
371 continue;
372 if (end > max_low_pfn)
373 end = max_low_pfn;
374 if (start < start_kernel_pfn) {
375 if (end > end_kernel_pfn
376 && end - end_kernel_pfn >= bootmap_pages) {
377 bootmap_start = end_kernel_pfn;
378 break;
379 } else if (end > start_kernel_pfn)
380 end = start_kernel_pfn;
381 } else if (start < end_kernel_pfn)
382 start = end_kernel_pfn;
383 if (end - start >= bootmap_pages) {
384 bootmap_start = start;
385 break;
386 }
387 }
388
389 if (bootmap_start == ~0UL) {
390 max_low_pfn >>= 1;
391 goto try_again;
392 }
393
394 /* Allocate the bootmap and mark the whole MM as reserved. */
395 bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
396
397 /* Mark the free regions. */
398 for_each_mem_cluster(memdesc, cluster, i) {
399 if (cluster->usage & 3)
400 continue;
401
402 start = cluster->start_pfn;
403 end = cluster->start_pfn + cluster->numpages;
404 if (start >= max_low_pfn)
405 continue;
406 if (end > max_low_pfn)
407 end = max_low_pfn;
408 if (start < start_kernel_pfn) {
409 if (end > end_kernel_pfn) {
410 free_bootmem(PFN_PHYS(start),
411 (PFN_PHYS(start_kernel_pfn)
412 - PFN_PHYS(start)));
413 printk("freeing pages %ld:%ld\n",
414 start, start_kernel_pfn);
415 start = end_kernel_pfn;
416 } else if (end > start_kernel_pfn)
417 end = start_kernel_pfn;
418 } else if (start < end_kernel_pfn)
419 start = end_kernel_pfn;
420 if (start >= end)
421 continue;
422
423 free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
424 printk("freeing pages %ld:%ld\n", start, end);
425 }
426
427 /* Reserve the bootmap memory. */
428 reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size);
429 printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
430
431#ifdef CONFIG_BLK_DEV_INITRD
432 initrd_start = INITRD_START;
433 if (initrd_start) {
434 initrd_end = initrd_start+INITRD_SIZE;
435 printk("Initial ramdisk at: 0x%p (%lu bytes)\n",
436 (void *) initrd_start, INITRD_SIZE);
437
438 if ((void *)initrd_end > phys_to_virt(PFN_PHYS(max_low_pfn))) {
439 if (!move_initrd(PFN_PHYS(max_low_pfn)))
440 printk("initrd extends beyond end of memory "
441 "(0x%08lx > 0x%p)\ndisabling initrd\n",
442 initrd_end,
443 phys_to_virt(PFN_PHYS(max_low_pfn)));
444 } else {
445 reserve_bootmem(virt_to_phys((void *)initrd_start),
446 INITRD_SIZE);
447 }
448 }
449#endif /* CONFIG_BLK_DEV_INITRD */
450}
451#else
452extern void setup_memory(void *);
453#endif /* !CONFIG_DISCONTIGMEM */
454
455int __init
456page_is_ram(unsigned long pfn)
457{
458 struct memclust_struct * cluster;
459 struct memdesc_struct * memdesc;
460 unsigned long i;
461
462 memdesc = (struct memdesc_struct *)
463 (hwrpb->mddt_offset + (unsigned long) hwrpb);
464 for_each_mem_cluster(memdesc, cluster, i)
465 {
466 if (pfn >= cluster->start_pfn &&
467 pfn < cluster->start_pfn + cluster->numpages) {
468 return (cluster->usage & 3) ? 0 : 1;
469 }
470 }
471
472 return 0;
473}
474
475#undef PFN_UP
476#undef PFN_DOWN
477#undef PFN_PHYS
478#undef PFN_MAX
479
480void __init
481setup_arch(char **cmdline_p)
482{
483 extern char _end[];
484
485 struct alpha_machine_vector *vec = NULL;
486 struct percpu_struct *cpu;
487 char *type_name, *var_name, *p;
488 void *kernel_end = _end; /* end of kernel */
489 char *args = command_line;
490
491 hwrpb = (struct hwrpb_struct*) __va(INIT_HWRPB->phys_addr);
492 boot_cpuid = hard_smp_processor_id();
493
494 /*
495 * Pre-process the system type to make sure it will be valid.
496 *
497 * This may restore real CABRIO and EB66+ family names, ie
498 * EB64+ and EB66.
499 *
500 * Oh, and "white box" AS800 (aka DIGITAL Server 3000 series)
501 * and AS1200 (DIGITAL Server 5000 series) have the type as
502 * the negative of the real one.
503 */
504 if ((long)hwrpb->sys_type < 0) {
505 hwrpb->sys_type = -((long)hwrpb->sys_type);
506 hwrpb_update_checksum(hwrpb);
507 }
508
509 /* Register a call for panic conditions. */
510 notifier_chain_register(&panic_notifier_list, &alpha_panic_block);
511
512#ifdef CONFIG_ALPHA_GENERIC
513 /* Assume that we've booted from SRM if we haven't booted from MILO.
514 Detect the later by looking for "MILO" in the system serial nr. */
515 alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
516#endif
517
518 /* If we are using SRM, we want to allow callbacks
519 as early as possible, so do this NOW, and then
520 they should work immediately thereafter.
521 */
522 kernel_end = callback_init(kernel_end);
523
524 /*
525 * Locate the command line.
526 */
527 /* Hack for Jensen... since we're restricted to 8 or 16 chars for
528 boot flags depending on the boot mode, we need some shorthand.
529 This should do for installation. */
530 if (strcmp(COMMAND_LINE, "INSTALL") == 0) {
531 strlcpy(command_line, "root=/dev/fd0 load_ramdisk=1", sizeof command_line);
532 } else {
533 strlcpy(command_line, COMMAND_LINE, sizeof command_line);
534 }
535 strcpy(saved_command_line, command_line);
536 *cmdline_p = command_line;
537
538 /*
539 * Process command-line arguments.
540 */
541 while ((p = strsep(&args, " \t")) != NULL) {
542 if (!*p) continue;
543 if (strncmp(p, "alpha_mv=", 9) == 0) {
544 vec = get_sysvec_byname(p+9);
545 continue;
546 }
547 if (strncmp(p, "cycle=", 6) == 0) {
548 est_cycle_freq = simple_strtol(p+6, NULL, 0);
549 continue;
550 }
551 if (strncmp(p, "mem=", 4) == 0) {
552 mem_size_limit = get_mem_size_limit(p+4);
553 continue;
554 }
555 if (strncmp(p, "srmcons", 7) == 0) {
556 srmcons_output |= 1;
557 continue;
558 }
559 if (strncmp(p, "console=srm", 11) == 0) {
560 srmcons_output |= 2;
561 continue;
562 }
563 if (strncmp(p, "gartsize=", 9) == 0) {
564 alpha_agpgart_size =
565 get_mem_size_limit(p+9) << PAGE_SHIFT;
566 continue;
567 }
568#ifdef CONFIG_VERBOSE_MCHECK
569 if (strncmp(p, "verbose_mcheck=", 15) == 0) {
570 alpha_verbose_mcheck = simple_strtol(p+15, NULL, 0);
571 continue;
572 }
573#endif
574 }
575
576 /* Replace the command line, now that we've killed it with strsep. */
577 strcpy(command_line, saved_command_line);
578
579 /* If we want SRM console printk echoing early, do it now. */
580 if (alpha_using_srm && srmcons_output) {
581 register_srm_console();
582
583 /*
584 * If "console=srm" was specified, clear the srmcons_output
585 * flag now so that time.c won't unregister_srm_console
586 */
587 if (srmcons_output & 2)
588 srmcons_output = 0;
589 }
590
591#ifdef CONFIG_MAGIC_SYSRQ
592 /* If we're using SRM, make sysrq-b halt back to the prom,
593 not auto-reboot. */
594 if (alpha_using_srm) {
595 struct sysrq_key_op *op = __sysrq_get_key_op('b');
596 op->handler = (void *) machine_halt;
597 }
598#endif
599
600 /*
601 * Identify and reconfigure for the current system.
602 */
603 cpu = (struct percpu_struct*)((char*)hwrpb + hwrpb->processor_offset);
604
605 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
606 cpu->type, &type_name, &var_name);
607 if (*var_name == '0')
608 var_name = "";
609
610 if (!vec) {
611 vec = get_sysvec(hwrpb->sys_type, hwrpb->sys_variation,
612 cpu->type);
613 }
614
615 if (!vec) {
616 panic("Unsupported system type: %s%s%s (%ld %ld)\n",
617 type_name, (*var_name ? " variation " : ""), var_name,
618 hwrpb->sys_type, hwrpb->sys_variation);
619 }
620 if (vec != &alpha_mv) {
621 alpha_mv = *vec;
622 }
623
624 printk("Booting "
625#ifdef CONFIG_ALPHA_GENERIC
626 "GENERIC "
627#endif
628 "on %s%s%s using machine vector %s from %s\n",
629 type_name, (*var_name ? " variation " : ""),
630 var_name, alpha_mv.vector_name,
631 (alpha_using_srm ? "SRM" : "MILO"));
632
633 printk("Major Options: "
634#ifdef CONFIG_SMP
635 "SMP "
636#endif
637#ifdef CONFIG_ALPHA_EV56
638 "EV56 "
639#endif
640#ifdef CONFIG_ALPHA_EV67
641 "EV67 "
642#endif
643#ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
644 "LEGACY_START "
645#endif
646#ifdef CONFIG_VERBOSE_MCHECK
647 "VERBOSE_MCHECK "
648#endif
649
650#ifdef CONFIG_DISCONTIGMEM
651 "DISCONTIGMEM "
652#ifdef CONFIG_NUMA
653 "NUMA "
654#endif
655#endif
656
657#ifdef CONFIG_DEBUG_SPINLOCK
658 "DEBUG_SPINLOCK "
659#endif
660#ifdef CONFIG_MAGIC_SYSRQ
661 "MAGIC_SYSRQ "
662#endif
663 "\n");
664
665 printk("Command line: %s\n", command_line);
666
667 /*
668 * Sync up the HAE.
669 * Save the SRM's current value for restoration.
670 */
671 srm_hae = *alpha_mv.hae_register;
672 __set_hae(alpha_mv.hae_cache);
673
674 /* Reset enable correctable error reports. */
675 wrmces(0x7);
676
677 /* Find our memory. */
678 setup_memory(kernel_end);
679
680 /* First guess at cpu cache sizes. Do this before init_arch. */
681 determine_cpu_caches(cpu->type);
682
683 /* Initialize the machine. Usually has to do with setting up
684 DMA windows and the like. */
685 if (alpha_mv.init_arch)
686 alpha_mv.init_arch();
687
688 /* Reserve standard resources. */
689 reserve_std_resources();
690
691 /*
692 * Give us a default console. TGA users will see nothing until
693 * chr_dev_init is called, rather late in the boot sequence.
694 */
695
696#ifdef CONFIG_VT
697#if defined(CONFIG_VGA_CONSOLE)
698 conswitchp = &vga_con;
699#elif defined(CONFIG_DUMMY_CONSOLE)
700 conswitchp = &dummy_con;
701#endif
702#endif
703
704 /* Default root filesystem to sda2. */
705 ROOT_DEV = Root_SDA2;
706
707#ifdef CONFIG_EISA
708 /* FIXME: only set this when we actually have EISA in this box? */
709 EISA_bus = 1;
710#endif
711
712 /*
713 * Check ASN in HWRPB for validity, report if bad.
714 * FIXME: how was this failing? Should we trust it instead,
715 * and copy the value into alpha_mv.max_asn?
716 */
717
718 if (hwrpb->max_asn != MAX_ASN) {
719 printk("Max ASN from HWRPB is bad (0x%lx)\n", hwrpb->max_asn);
720 }
721
722 /*
723 * Identify the flock of penguins.
724 */
725
726#ifdef CONFIG_SMP
727 setup_smp();
728#endif
729 paging_init();
730}
731
732void __init
733disable_early_printk(void)
734{
735 if (alpha_using_srm && srmcons_output) {
736 unregister_srm_console();
737 srmcons_output = 0;
738 }
739}
740
741static char sys_unknown[] = "Unknown";
742static char systype_names[][16] = {
743 "0",
744 "ADU", "Cobra", "Ruby", "Flamingo", "Mannequin", "Jensen",
745 "Pelican", "Morgan", "Sable", "Medulla", "Noname",
746 "Turbolaser", "Avanti", "Mustang", "Alcor", "Tradewind",
747 "Mikasa", "EB64", "EB66", "EB64+", "AlphaBook1",
748 "Rawhide", "K2", "Lynx", "XL", "EB164", "Noritake",
749 "Cortex", "29", "Miata", "XXM", "Takara", "Yukon",
750 "Tsunami", "Wildfire", "CUSCO", "Eiger", "Titan", "Marvel"
751};
752
753static char unofficial_names[][8] = {"100", "Ruffian"};
754
755static char api_names[][16] = {"200", "Nautilus"};
756
757static char eb164_names[][8] = {"EB164", "PC164", "LX164", "SX164", "RX164"};
758static int eb164_indices[] = {0,0,0,1,1,1,1,1,2,2,2,2,3,3,3,3,4};
759
760static char alcor_names[][16] = {"Alcor", "Maverick", "Bret"};
761static int alcor_indices[] = {0,0,0,1,1,1,0,0,0,0,0,0,2,2,2,2,2,2};
762
763static char eb64p_names[][16] = {"EB64+", "Cabriolet", "AlphaPCI64"};
764static int eb64p_indices[] = {0,0,1,2};
765
766static char eb66_names[][8] = {"EB66", "EB66+"};
767static int eb66_indices[] = {0,0,1};
768
769static char marvel_names[][16] = {
770 "Marvel/EV7"
771};
772static int marvel_indices[] = { 0 };
773
774static char rawhide_names[][16] = {
775 "Dodge", "Wrangler", "Durango", "Tincup", "DaVinci"
776};
777static int rawhide_indices[] = {0,0,0,1,1,2,2,3,3,4,4};
778
779static char titan_names[][16] = {
780 "DEFAULT", "Privateer", "Falcon", "Granite"
781};
782static int titan_indices[] = {0,1,2,2,3};
783
784static char tsunami_names[][16] = {
785 "0", "DP264", "Warhol", "Windjammer", "Monet", "Clipper",
786 "Goldrush", "Webbrick", "Catamaran", "Brisbane", "Melbourne",
787 "Flying Clipper", "Shark"
788};
789static int tsunami_indices[] = {0,1,2,3,4,5,6,7,8,9,10,11,12};
790
791static struct alpha_machine_vector * __init
792get_sysvec(unsigned long type, unsigned long variation, unsigned long cpu)
793{
794 static struct alpha_machine_vector *systype_vecs[] __initdata =
795 {
796 NULL, /* 0 */
797 NULL, /* ADU */
798 NULL, /* Cobra */
799 NULL, /* Ruby */
800 NULL, /* Flamingo */
801 NULL, /* Mannequin */
802 &jensen_mv,
803 NULL, /* Pelican */
804 NULL, /* Morgan */
805 NULL, /* Sable -- see below. */
806 NULL, /* Medulla */
807 &noname_mv,
808 NULL, /* Turbolaser */
809 &avanti_mv,
810 NULL, /* Mustang */
811 NULL, /* Alcor, Bret, Maverick. HWRPB inaccurate? */
812 NULL, /* Tradewind */
813 NULL, /* Mikasa -- see below. */
814 NULL, /* EB64 */
815 NULL, /* EB66 -- see variation. */
816 NULL, /* EB64+ -- see variation. */
817 &alphabook1_mv,
818 &rawhide_mv,
819 NULL, /* K2 */
820 &lynx_mv, /* Lynx */
821 &xl_mv,
822 NULL, /* EB164 -- see variation. */
823 NULL, /* Noritake -- see below. */
824 NULL, /* Cortex */
825 NULL, /* 29 */
826 &miata_mv,
827 NULL, /* XXM */
828 &takara_mv,
829 NULL, /* Yukon */
830 NULL, /* Tsunami -- see variation. */
831 &wildfire_mv, /* Wildfire */
832 NULL, /* CUSCO */
833 &eiger_mv, /* Eiger */
834 NULL, /* Titan */
835 NULL, /* Marvel */
836 };
837
838 static struct alpha_machine_vector *unofficial_vecs[] __initdata =
839 {
840 NULL, /* 100 */
841 &ruffian_mv,
842 };
843
844 static struct alpha_machine_vector *api_vecs[] __initdata =
845 {
846 NULL, /* 200 */
847 &nautilus_mv,
848 };
849
850 static struct alpha_machine_vector *alcor_vecs[] __initdata =
851 {
852 &alcor_mv, &xlt_mv, &xlt_mv
853 };
854
855 static struct alpha_machine_vector *eb164_vecs[] __initdata =
856 {
857 &eb164_mv, &pc164_mv, &lx164_mv, &sx164_mv, &rx164_mv
858 };
859
860 static struct alpha_machine_vector *eb64p_vecs[] __initdata =
861 {
862 &eb64p_mv,
863 &cabriolet_mv,
864 &cabriolet_mv /* AlphaPCI64 */
865 };
866
867 static struct alpha_machine_vector *eb66_vecs[] __initdata =
868 {
869 &eb66_mv,
870 &eb66p_mv
871 };
872
873 static struct alpha_machine_vector *marvel_vecs[] __initdata =
874 {
875 &marvel_ev7_mv,
876 };
877
878 static struct alpha_machine_vector *titan_vecs[] __initdata =
879 {
880 &titan_mv, /* default */
881 &privateer_mv, /* privateer */
882 &titan_mv, /* falcon */
883 &privateer_mv, /* granite */
884 };
885
886 static struct alpha_machine_vector *tsunami_vecs[] __initdata =
887 {
888 NULL,
889 &dp264_mv, /* dp264 */
890 &dp264_mv, /* warhol */
891 &dp264_mv, /* windjammer */
892 &monet_mv, /* monet */
893 &clipper_mv, /* clipper */
894 &dp264_mv, /* goldrush */
895 &webbrick_mv, /* webbrick */
896 &dp264_mv, /* catamaran */
897 NULL, /* brisbane? */
898 NULL, /* melbourne? */
899 NULL, /* flying clipper? */
900 &shark_mv, /* shark */
901 };
902
903 /* ??? Do we need to distinguish between Rawhides? */
904
905 struct alpha_machine_vector *vec;
906
907 /* Search the system tables first... */
908 vec = NULL;
909 if (type < N(systype_vecs)) {
910 vec = systype_vecs[type];
911 } else if ((type > ST_API_BIAS) &&
912 (type - ST_API_BIAS) < N(api_vecs)) {
913 vec = api_vecs[type - ST_API_BIAS];
914 } else if ((type > ST_UNOFFICIAL_BIAS) &&
915 (type - ST_UNOFFICIAL_BIAS) < N(unofficial_vecs)) {
916 vec = unofficial_vecs[type - ST_UNOFFICIAL_BIAS];
917 }
918
919 /* If we've not found one, try for a variation. */
920
921 if (!vec) {
922 /* Member ID is a bit-field. */
923 unsigned long member = (variation >> 10) & 0x3f;
924
925 cpu &= 0xffffffff; /* make it usable */
926
927 switch (type) {
928 case ST_DEC_ALCOR:
929 if (member < N(alcor_indices))
930 vec = alcor_vecs[alcor_indices[member]];
931 break;
932 case ST_DEC_EB164:
933 if (member < N(eb164_indices))
934 vec = eb164_vecs[eb164_indices[member]];
935 /* PC164 may show as EB164 variation with EV56 CPU,
936 but, since no true EB164 had anything but EV5... */
937 if (vec == &eb164_mv && cpu == EV56_CPU)
938 vec = &pc164_mv;
939 break;
940 case ST_DEC_EB64P:
941 if (member < N(eb64p_indices))
942 vec = eb64p_vecs[eb64p_indices[member]];
943 break;
944 case ST_DEC_EB66:
945 if (member < N(eb66_indices))
946 vec = eb66_vecs[eb66_indices[member]];
947 break;
948 case ST_DEC_MARVEL:
949 if (member < N(marvel_indices))
950 vec = marvel_vecs[marvel_indices[member]];
951 break;
952 case ST_DEC_TITAN:
953 vec = titan_vecs[0]; /* default */
954 if (member < N(titan_indices))
955 vec = titan_vecs[titan_indices[member]];
956 break;
957 case ST_DEC_TSUNAMI:
958 if (member < N(tsunami_indices))
959 vec = tsunami_vecs[tsunami_indices[member]];
960 break;
961 case ST_DEC_1000:
962 if (cpu == EV5_CPU || cpu == EV56_CPU)
963 vec = &mikasa_primo_mv;
964 else
965 vec = &mikasa_mv;
966 break;
967 case ST_DEC_NORITAKE:
968 if (cpu == EV5_CPU || cpu == EV56_CPU)
969 vec = &noritake_primo_mv;
970 else
971 vec = &noritake_mv;
972 break;
973 case ST_DEC_2100_A500:
974 if (cpu == EV5_CPU || cpu == EV56_CPU)
975 vec = &sable_gamma_mv;
976 else
977 vec = &sable_mv;
978 break;
979 }
980 }
981 return vec;
982}
983
984static struct alpha_machine_vector * __init
985get_sysvec_byname(const char *name)
986{
987 static struct alpha_machine_vector *all_vecs[] __initdata =
988 {
989 &alcor_mv,
990 &alphabook1_mv,
991 &avanti_mv,
992 &cabriolet_mv,
993 &clipper_mv,
994 &dp264_mv,
995 &eb164_mv,
996 &eb64p_mv,
997 &eb66_mv,
998 &eb66p_mv,
999 &eiger_mv,
1000 &jensen_mv,
1001 &lx164_mv,
1002 &lynx_mv,
1003 &miata_mv,
1004 &mikasa_mv,
1005 &mikasa_primo_mv,
1006 &monet_mv,
1007 &nautilus_mv,
1008 &noname_mv,
1009 &noritake_mv,
1010 &noritake_primo_mv,
1011 &p2k_mv,
1012 &pc164_mv,
1013 &privateer_mv,
1014 &rawhide_mv,
1015 &ruffian_mv,
1016 &rx164_mv,
1017 &sable_mv,
1018 &sable_gamma_mv,
1019 &shark_mv,
1020 &sx164_mv,
1021 &takara_mv,
1022 &webbrick_mv,
1023 &wildfire_mv,
1024 &xl_mv,
1025 &xlt_mv
1026 };
1027
1028 size_t i;
1029
1030 for (i = 0; i < N(all_vecs); ++i) {
1031 struct alpha_machine_vector *mv = all_vecs[i];
1032 if (strcasecmp(mv->vector_name, name) == 0)
1033 return mv;
1034 }
1035 return NULL;
1036}
1037
1038static void
1039get_sysnames(unsigned long type, unsigned long variation, unsigned long cpu,
1040 char **type_name, char **variation_name)
1041{
1042 unsigned long member;
1043
1044 /* If not in the tables, make it UNKNOWN,
1045 else set type name to family */
1046 if (type < N(systype_names)) {
1047 *type_name = systype_names[type];
1048 } else if ((type > ST_API_BIAS) &&
1049 (type - ST_API_BIAS) < N(api_names)) {
1050 *type_name = api_names[type - ST_API_BIAS];
1051 } else if ((type > ST_UNOFFICIAL_BIAS) &&
1052 (type - ST_UNOFFICIAL_BIAS) < N(unofficial_names)) {
1053 *type_name = unofficial_names[type - ST_UNOFFICIAL_BIAS];
1054 } else {
1055 *type_name = sys_unknown;
1056 *variation_name = sys_unknown;
1057 return;
1058 }
1059
1060 /* Set variation to "0"; if variation is zero, done. */
1061 *variation_name = systype_names[0];
1062 if (variation == 0) {
1063 return;
1064 }
1065
1066 member = (variation >> 10) & 0x3f; /* member ID is a bit-field */
1067
1068 cpu &= 0xffffffff; /* make it usable */
1069
1070 switch (type) { /* select by family */
1071 default: /* default to variation "0" for now */
1072 break;
1073 case ST_DEC_EB164:
1074 if (member < N(eb164_indices))
1075 *variation_name = eb164_names[eb164_indices[member]];
1076 /* PC164 may show as EB164 variation, but with EV56 CPU,
1077 so, since no true EB164 had anything but EV5... */
1078 if (eb164_indices[member] == 0 && cpu == EV56_CPU)
1079 *variation_name = eb164_names[1]; /* make it PC164 */
1080 break;
1081 case ST_DEC_ALCOR:
1082 if (member < N(alcor_indices))
1083 *variation_name = alcor_names[alcor_indices[member]];
1084 break;
1085 case ST_DEC_EB64P:
1086 if (member < N(eb64p_indices))
1087 *variation_name = eb64p_names[eb64p_indices[member]];
1088 break;
1089 case ST_DEC_EB66:
1090 if (member < N(eb66_indices))
1091 *variation_name = eb66_names[eb66_indices[member]];
1092 break;
1093 case ST_DEC_MARVEL:
1094 if (member < N(marvel_indices))
1095 *variation_name = marvel_names[marvel_indices[member]];
1096 break;
1097 case ST_DEC_RAWHIDE:
1098 if (member < N(rawhide_indices))
1099 *variation_name = rawhide_names[rawhide_indices[member]];
1100 break;
1101 case ST_DEC_TITAN:
1102 *variation_name = titan_names[0]; /* default */
1103 if (member < N(titan_indices))
1104 *variation_name = titan_names[titan_indices[member]];
1105 break;
1106 case ST_DEC_TSUNAMI:
1107 if (member < N(tsunami_indices))
1108 *variation_name = tsunami_names[tsunami_indices[member]];
1109 break;
1110 }
1111}
1112
1113/*
1114 * A change was made to the HWRPB via an ECO and the following code
1115 * tracks a part of the ECO. In HWRPB versions less than 5, the ECO
1116 * was not implemented in the console firmware. If it's revision 5 or
1117 * greater we can get the name of the platform as an ASCII string from
1118 * the HWRPB. That's what this function does. It checks the revision
1119 * level and if the string is in the HWRPB it returns the address of
1120 * the string--a pointer to the name of the platform.
1121 *
1122 * Returns:
1123 * - Pointer to a ASCII string if it's in the HWRPB
1124 * - Pointer to a blank string if the data is not in the HWRPB.
1125 */
1126
1127static char *
1128platform_string(void)
1129{
1130 struct dsr_struct *dsr;
1131 static char unk_system_string[] = "N/A";
1132
1133 /* Go to the console for the string pointer.
1134 * If the rpb_vers is not 5 or greater the rpb
1135 * is old and does not have this data in it.
1136 */
1137 if (hwrpb->revision < 5)
1138 return (unk_system_string);
1139 else {
1140 /* The Dynamic System Recognition struct
1141 * has the system platform name starting
1142 * after the character count of the string.
1143 */
1144 dsr = ((struct dsr_struct *)
1145 ((char *)hwrpb + hwrpb->dsr_offset));
1146 return ((char *)dsr + (dsr->sysname_off +
1147 sizeof(long)));
1148 }
1149}
1150
1151static int
1152get_nr_processors(struct percpu_struct *cpubase, unsigned long num)
1153{
1154 struct percpu_struct *cpu;
1155 unsigned long i;
1156 int count = 0;
1157
1158 for (i = 0; i < num; i++) {
1159 cpu = (struct percpu_struct *)
1160 ((char *)cpubase + i*hwrpb->processor_size);
1161 if ((cpu->flags & 0x1cc) == 0x1cc)
1162 count++;
1163 }
1164 return count;
1165}
1166
1167static void
1168show_cache_size (struct seq_file *f, const char *which, int shape)
1169{
1170 if (shape == -1)
1171 seq_printf (f, "%s\t\t: n/a\n", which);
1172 else if (shape == 0)
1173 seq_printf (f, "%s\t\t: unknown\n", which);
1174 else
1175 seq_printf (f, "%s\t\t: %dK, %d-way, %db line\n",
1176 which, shape >> 10, shape & 15,
1177 1 << ((shape >> 4) & 15));
1178}
1179
1180static int
1181show_cpuinfo(struct seq_file *f, void *slot)
1182{
1183 extern struct unaligned_stat {
1184 unsigned long count, va, pc;
1185 } unaligned[2];
1186
1187 static char cpu_names[][8] = {
1188 "EV3", "EV4", "Simulate", "LCA4", "EV5", "EV45", "EV56",
1189 "EV6", "PCA56", "PCA57", "EV67", "EV68CB", "EV68AL",
1190 "EV68CX", "EV7", "EV79", "EV69"
1191 };
1192
1193 struct percpu_struct *cpu = slot;
1194 unsigned int cpu_index;
1195 char *cpu_name;
1196 char *systype_name;
1197 char *sysvariation_name;
1198 int nr_processors;
1199
1200 cpu_index = (unsigned) (cpu->type - 1);
1201 cpu_name = "Unknown";
1202 if (cpu_index < N(cpu_names))
1203 cpu_name = cpu_names[cpu_index];
1204
1205 get_sysnames(hwrpb->sys_type, hwrpb->sys_variation,
1206 cpu->type, &systype_name, &sysvariation_name);
1207
1208 nr_processors = get_nr_processors(cpu, hwrpb->nr_processors);
1209
1210 seq_printf(f, "cpu\t\t\t: Alpha\n"
1211 "cpu model\t\t: %s\n"
1212 "cpu variation\t\t: %ld\n"
1213 "cpu revision\t\t: %ld\n"
1214 "cpu serial number\t: %s\n"
1215 "system type\t\t: %s\n"
1216 "system variation\t: %s\n"
1217 "system revision\t\t: %ld\n"
1218 "system serial number\t: %s\n"
1219 "cycle frequency [Hz]\t: %lu %s\n"
1220 "timer frequency [Hz]\t: %lu.%02lu\n"
1221 "page size [bytes]\t: %ld\n"
1222 "phys. address bits\t: %ld\n"
1223 "max. addr. space #\t: %ld\n"
1224 "BogoMIPS\t\t: %lu.%02lu\n"
1225 "kernel unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1226 "user unaligned acc\t: %ld (pc=%lx,va=%lx)\n"
1227 "platform string\t\t: %s\n"
1228 "cpus detected\t\t: %d\n",
1229 cpu_name, cpu->variation, cpu->revision,
1230 (char*)cpu->serial_no,
1231 systype_name, sysvariation_name, hwrpb->sys_revision,
1232 (char*)hwrpb->ssn,
1233 est_cycle_freq ? : hwrpb->cycle_freq,
1234 est_cycle_freq ? "est." : "",
1235 hwrpb->intr_freq / 4096,
1236 (100 * hwrpb->intr_freq / 4096) % 100,
1237 hwrpb->pagesize,
1238 hwrpb->pa_bits,
1239 hwrpb->max_asn,
1240 loops_per_jiffy / (500000/HZ),
1241 (loops_per_jiffy / (5000/HZ)) % 100,
1242 unaligned[0].count, unaligned[0].pc, unaligned[0].va,
1243 unaligned[1].count, unaligned[1].pc, unaligned[1].va,
1244 platform_string(), nr_processors);
1245
1246#ifdef CONFIG_SMP
1247 seq_printf(f, "cpus active\t\t: %d\n"
1248 "cpu active mask\t\t: %016lx\n",
1249 num_online_cpus(), cpus_addr(cpu_possible_map)[0]);
1250#endif
1251
1252 show_cache_size (f, "L1 Icache", alpha_l1i_cacheshape);
1253 show_cache_size (f, "L1 Dcache", alpha_l1d_cacheshape);
1254 show_cache_size (f, "L2 cache", alpha_l2_cacheshape);
1255 show_cache_size (f, "L3 cache", alpha_l3_cacheshape);
1256
1257 return 0;
1258}
1259
1260static int __init
1261read_mem_block(int *addr, int stride, int size)
1262{
1263 long nloads = size / stride, cnt, tmp;
1264
1265 __asm__ __volatile__(
1266 " rpcc %0\n"
1267 "1: ldl %3,0(%2)\n"
1268 " subq %1,1,%1\n"
1269 /* Next two XORs introduce an explicit data dependency between
1270 consecutive loads in the loop, which will give us true load
1271 latency. */
1272 " xor %3,%2,%2\n"
1273 " xor %3,%2,%2\n"
1274 " addq %2,%4,%2\n"
1275 " bne %1,1b\n"
1276 " rpcc %3\n"
1277 " subl %3,%0,%0\n"
1278 : "=&r" (cnt), "=&r" (nloads), "=&r" (addr), "=&r" (tmp)
1279 : "r" (stride), "1" (nloads), "2" (addr));
1280
1281 return cnt / (size / stride);
1282}
1283
1284#define CSHAPE(totalsize, linesize, assoc) \
1285 ((totalsize & ~0xff) | (linesize << 4) | assoc)
1286
1287/* ??? EV5 supports up to 64M, but did the systems with more than
1288 16M of BCACHE ever exist? */
1289#define MAX_BCACHE_SIZE 16*1024*1024
1290
1291/* Note that the offchip caches are direct mapped on all Alphas. */
1292static int __init
1293external_cache_probe(int minsize, int width)
1294{
1295 int cycles, prev_cycles = 1000000;
1296 int stride = 1 << width;
1297 long size = minsize, maxsize = MAX_BCACHE_SIZE * 2;
1298
1299 if (maxsize > (max_low_pfn + 1) << PAGE_SHIFT)
1300 maxsize = 1 << (floor_log2(max_low_pfn + 1) + PAGE_SHIFT);
1301
1302 /* Get the first block cached. */
1303 read_mem_block(__va(0), stride, size);
1304
1305 while (size < maxsize) {
1306 /* Get an average load latency in cycles. */
1307 cycles = read_mem_block(__va(0), stride, size);
1308 if (cycles > prev_cycles * 2) {
1309 /* Fine, we exceed the cache. */
1310 printk("%ldK Bcache detected; load hit latency %d "
1311 "cycles, load miss latency %d cycles\n",
1312 size >> 11, prev_cycles, cycles);
1313 return CSHAPE(size >> 1, width, 1);
1314 }
1315 /* Try to get the next block cached. */
1316 read_mem_block(__va(size), stride, size);
1317 prev_cycles = cycles;
1318 size <<= 1;
1319 }
1320 return -1; /* No BCACHE found. */
1321}
1322
1323static void __init
1324determine_cpu_caches (unsigned int cpu_type)
1325{
1326 int L1I, L1D, L2, L3;
1327
1328 switch (cpu_type) {
1329 case EV4_CPU:
1330 case EV45_CPU:
1331 {
1332 if (cpu_type == EV4_CPU)
1333 L1I = CSHAPE(8*1024, 5, 1);
1334 else
1335 L1I = CSHAPE(16*1024, 5, 1);
1336 L1D = L1I;
1337 L3 = -1;
1338
1339 /* BIU_CTL is a write-only Abox register. PALcode has a
1340 shadow copy, and may be available from some versions
1341 of the CSERVE PALcall. If we can get it, then
1342
1343 unsigned long biu_ctl, size;
1344 size = 128*1024 * (1 << ((biu_ctl >> 28) & 7));
1345 L2 = CSHAPE (size, 5, 1);
1346
1347 Unfortunately, we can't rely on that.
1348 */
1349 L2 = external_cache_probe(128*1024, 5);
1350 break;
1351 }
1352
1353 case LCA4_CPU:
1354 {
1355 unsigned long car, size;
1356
1357 L1I = L1D = CSHAPE(8*1024, 5, 1);
1358 L3 = -1;
1359
1360 car = *(vuip) phys_to_virt (0x120000078UL);
1361 size = 64*1024 * (1 << ((car >> 5) & 7));
1362 /* No typo -- 8 byte cacheline size. Whodathunk. */
1363 L2 = (car & 1 ? CSHAPE (size, 3, 1) : -1);
1364 break;
1365 }
1366
1367 case EV5_CPU:
1368 case EV56_CPU:
1369 {
1370 unsigned long sc_ctl, width;
1371
1372 L1I = L1D = CSHAPE(8*1024, 5, 1);
1373
1374 /* Check the line size of the Scache. */
1375 sc_ctl = *(vulp) phys_to_virt (0xfffff000a8UL);
1376 width = sc_ctl & 0x1000 ? 6 : 5;
1377 L2 = CSHAPE (96*1024, width, 3);
1378
1379 /* BC_CONTROL and BC_CONFIG are write-only IPRs. PALcode
1380 has a shadow copy, and may be available from some versions
1381 of the CSERVE PALcall. If we can get it, then
1382
1383 unsigned long bc_control, bc_config, size;
1384 size = 1024*1024 * (1 << ((bc_config & 7) - 1));
1385 L3 = (bc_control & 1 ? CSHAPE (size, width, 1) : -1);
1386
1387 Unfortunately, we can't rely on that.
1388 */
1389 L3 = external_cache_probe(1024*1024, width);
1390 break;
1391 }
1392
1393 case PCA56_CPU:
1394 case PCA57_CPU:
1395 {
1396 unsigned long cbox_config, size;
1397
1398 if (cpu_type == PCA56_CPU) {
1399 L1I = CSHAPE(16*1024, 6, 1);
1400 L1D = CSHAPE(8*1024, 5, 1);
1401 } else {
1402 L1I = CSHAPE(32*1024, 6, 2);
1403 L1D = CSHAPE(16*1024, 5, 1);
1404 }
1405 L3 = -1;
1406
1407 cbox_config = *(vulp) phys_to_virt (0xfffff00008UL);
1408 size = 512*1024 * (1 << ((cbox_config >> 12) & 3));
1409
1410#if 0
1411 L2 = ((cbox_config >> 31) & 1 ? CSHAPE (size, 6, 1) : -1);
1412#else
1413 L2 = external_cache_probe(512*1024, 6);
1414#endif
1415 break;
1416 }
1417
1418 case EV6_CPU:
1419 case EV67_CPU:
1420 case EV68CB_CPU:
1421 case EV68AL_CPU:
1422 case EV68CX_CPU:
1423 case EV69_CPU:
1424 L1I = L1D = CSHAPE(64*1024, 6, 2);
1425 L2 = external_cache_probe(1024*1024, 6);
1426 L3 = -1;
1427 break;
1428
1429 case EV7_CPU:
1430 case EV79_CPU:
1431 L1I = L1D = CSHAPE(64*1024, 6, 2);
1432 L2 = CSHAPE(7*1024*1024/4, 6, 7);
1433 L3 = -1;
1434 break;
1435
1436 default:
1437 /* Nothing known about this cpu type. */
1438 L1I = L1D = L2 = L3 = 0;
1439 break;
1440 }
1441
1442 alpha_l1i_cacheshape = L1I;
1443 alpha_l1d_cacheshape = L1D;
1444 alpha_l2_cacheshape = L2;
1445 alpha_l3_cacheshape = L3;
1446}
1447
1448/*
1449 * We show only CPU #0 info.
1450 */
1451static void *
1452c_start(struct seq_file *f, loff_t *pos)
1453{
1454 return *pos ? NULL : (char *)hwrpb + hwrpb->processor_offset;
1455}
1456
1457static void *
1458c_next(struct seq_file *f, void *v, loff_t *pos)
1459{
1460 return NULL;
1461}
1462
1463static void
1464c_stop(struct seq_file *f, void *v)
1465{
1466}
1467
1468struct seq_operations cpuinfo_op = {
1469 .start = c_start,
1470 .next = c_next,
1471 .stop = c_stop,
1472 .show = show_cpuinfo,
1473};
1474
1475
1476static int
1477alpha_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
1478{
1479#if 1
1480 /* FIXME FIXME FIXME */
1481 /* If we are using SRM and serial console, just hard halt here. */
1482 if (alpha_using_srm && srmcons_output)
1483 __halt();
1484#endif
1485 return NOTIFY_DONE;
1486}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-20 04:08:23 -0500