This source file includes following definitions.
- enter_prom
- prom_strcmp
- prom_strcpy
- prom_strncmp
- prom_strlen
- prom_memcmp
- prom_strstr
- prom_strlcpy
- prom_strtobool
- call_prom
- call_prom_ret
- prom_print
- prom_print_hex
- prom_print_dec
- __printf
- prom_claim
- prom_panic
- prom_next_node
- prom_getprop
- prom_getproplen
- add_string
- tohex
- prom_setprop
- prom_strtoul
- prom_memparse
- early_cmdline_parse
- prom_count_smt_threads
- prom_parse_mmu_model
- prom_parse_xive_model
- prom_parse_platform_support
- prom_check_platform_support
- prom_send_capabilities
- alloc_up
- alloc_down
- prom_next_cell
- reserve_mem
- prom_init_mem
- prom_close_stdin
- prom_rtas_hcall
- prom_rtas_os_term
- prom_instantiate_rtas
- prom_instantiate_sml
- prom_initialize_tce_table
- prom_hold_cpus
- prom_init_client_services
- prom_find_mmu
- prom_init_stdout
- prom_find_machine_type
- prom_set_color
- prom_check_displays
- make_room
- dt_find_string
- scan_dt_build_strings
- scan_dt_build_struct
- flatten_device_tree
- fixup_device_tree_maple
- fixup_device_tree_maple_memory_controller
- fixup_device_tree_chrp
- fixup_device_tree_pmac
- fixup_device_tree_efika_add_phy
- fixup_device_tree_efika
- fixup_device_tree_pasemi
- fixup_device_tree_pasemi
- fixup_device_tree
- prom_find_boot_cpu
- prom_check_initrd
- reloc_toc
- unreloc_toc
- __reloc_toc
- reloc_toc
- unreloc_toc
- enter_secure_mode
- setup_secure_guest
- setup_secure_guest
- prom_init
1
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5
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7
8
9
10
11
12 #undef DEBUG_PROM
13
14
15 #define __NO_FORTIFY
16
17 #include <stdarg.h>
18 #include <linux/kernel.h>
19 #include <linux/string.h>
20 #include <linux/init.h>
21 #include <linux/threads.h>
22 #include <linux/spinlock.h>
23 #include <linux/types.h>
24 #include <linux/pci.h>
25 #include <linux/proc_fs.h>
26 #include <linux/delay.h>
27 #include <linux/initrd.h>
28 #include <linux/bitops.h>
29 #include <asm/prom.h>
30 #include <asm/rtas.h>
31 #include <asm/page.h>
32 #include <asm/processor.h>
33 #include <asm/irq.h>
34 #include <asm/io.h>
35 #include <asm/smp.h>
36 #include <asm/mmu.h>
37 #include <asm/pgtable.h>
38 #include <asm/iommu.h>
39 #include <asm/btext.h>
40 #include <asm/sections.h>
41 #include <asm/machdep.h>
42 #include <asm/asm-prototypes.h>
43 #include <asm/ultravisor-api.h>
44
45 #include <linux/linux_logo.h>
46
47
48 #define __prombss __section(.bss.prominit)
49
50
51
52
53 #define DEVTREE_CHUNK_SIZE 0x100000
54
55
56
57
58
59
60
61
62 #define MEM_RESERVE_MAP_SIZE 8
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83 #define ADDR(x) (u32)(unsigned long)(x)
84
85 #ifdef CONFIG_PPC64
86 #define OF_WORKAROUNDS 0
87 #else
88 #define OF_WORKAROUNDS of_workarounds
89 static int of_workarounds __prombss;
90 #endif
91
92 #define OF_WA_CLAIM 1
93 #define OF_WA_LONGTRAIL 2
94
95 #define PROM_BUG() do { \
96 prom_printf("kernel BUG at %s line 0x%x!\n", \
97 __FILE__, __LINE__); \
98 __builtin_trap(); \
99 } while (0)
100
101 #ifdef DEBUG_PROM
102 #define prom_debug(x...) prom_printf(x)
103 #else
104 #define prom_debug(x...) do { } while (0)
105 #endif
106
107
108 typedef u32 prom_arg_t;
109
110 struct prom_args {
111 __be32 service;
112 __be32 nargs;
113 __be32 nret;
114 __be32 args[10];
115 };
116
117 struct prom_t {
118 ihandle root;
119 phandle chosen;
120 int cpu;
121 ihandle stdout;
122 ihandle mmumap;
123 ihandle memory;
124 };
125
126 struct mem_map_entry {
127 __be64 base;
128 __be64 size;
129 };
130
131 typedef __be32 cell_t;
132
133 extern void __start(unsigned long r3, unsigned long r4, unsigned long r5,
134 unsigned long r6, unsigned long r7, unsigned long r8,
135 unsigned long r9);
136
137 #ifdef CONFIG_PPC64
138 extern int enter_prom(struct prom_args *args, unsigned long entry);
139 #else
140 static inline int enter_prom(struct prom_args *args, unsigned long entry)
141 {
142 return ((int (*)(struct prom_args *))entry)(args);
143 }
144 #endif
145
146 extern void copy_and_flush(unsigned long dest, unsigned long src,
147 unsigned long size, unsigned long offset);
148
149
150 static struct prom_t __prombss prom;
151
152 static unsigned long __prombss prom_entry;
153
154 static char __prombss of_stdout_device[256];
155 static char __prombss prom_scratch[256];
156
157 static unsigned long __prombss dt_header_start;
158 static unsigned long __prombss dt_struct_start, dt_struct_end;
159 static unsigned long __prombss dt_string_start, dt_string_end;
160
161 static unsigned long __prombss prom_initrd_start, prom_initrd_end;
162
163 #ifdef CONFIG_PPC64
164 static int __prombss prom_iommu_force_on;
165 static int __prombss prom_iommu_off;
166 static unsigned long __prombss prom_tce_alloc_start;
167 static unsigned long __prombss prom_tce_alloc_end;
168 #endif
169
170 #ifdef CONFIG_PPC_PSERIES
171 static bool __prombss prom_radix_disable;
172 static bool __prombss prom_xive_disable;
173 #endif
174
175 #ifdef CONFIG_PPC_SVM
176 static bool __prombss prom_svm_enable;
177 #endif
178
179 struct platform_support {
180 bool hash_mmu;
181 bool radix_mmu;
182 bool radix_gtse;
183 bool xive;
184 };
185
186
187
188
189
190 #define PLATFORM_PSERIES 0x0100
191 #define PLATFORM_PSERIES_LPAR 0x0101
192 #define PLATFORM_LPAR 0x0001
193 #define PLATFORM_POWERMAC 0x0400
194 #define PLATFORM_GENERIC 0x0500
195
196 static int __prombss of_platform;
197
198 static char __prombss prom_cmd_line[COMMAND_LINE_SIZE];
199
200 static unsigned long __prombss prom_memory_limit;
201
202 static unsigned long __prombss alloc_top;
203 static unsigned long __prombss alloc_top_high;
204 static unsigned long __prombss alloc_bottom;
205 static unsigned long __prombss rmo_top;
206 static unsigned long __prombss ram_top;
207
208 static struct mem_map_entry __prombss mem_reserve_map[MEM_RESERVE_MAP_SIZE];
209 static int __prombss mem_reserve_cnt;
210
211 static cell_t __prombss regbuf[1024];
212
213 static bool __prombss rtas_has_query_cpu_stopped;
214
215
216
217
218
219
220
221
222
223 #define PROM_ERROR (-1u)
224 #define PHANDLE_VALID(p) ((p) != 0 && (p) != PROM_ERROR)
225 #define IHANDLE_VALID(i) ((i) != 0 && (i) != PROM_ERROR)
226
227
228
229 static int __init prom_strcmp(const char *cs, const char *ct)
230 {
231 unsigned char c1, c2;
232
233 while (1) {
234 c1 = *cs++;
235 c2 = *ct++;
236 if (c1 != c2)
237 return c1 < c2 ? -1 : 1;
238 if (!c1)
239 break;
240 }
241 return 0;
242 }
243
244 static char __init *prom_strcpy(char *dest, const char *src)
245 {
246 char *tmp = dest;
247
248 while ((*dest++ = *src++) != '\0')
249 ;
250 return tmp;
251 }
252
253 static int __init prom_strncmp(const char *cs, const char *ct, size_t count)
254 {
255 unsigned char c1, c2;
256
257 while (count) {
258 c1 = *cs++;
259 c2 = *ct++;
260 if (c1 != c2)
261 return c1 < c2 ? -1 : 1;
262 if (!c1)
263 break;
264 count--;
265 }
266 return 0;
267 }
268
269 static size_t __init prom_strlen(const char *s)
270 {
271 const char *sc;
272
273 for (sc = s; *sc != '\0'; ++sc)
274 ;
275 return sc - s;
276 }
277
278 static int __init prom_memcmp(const void *cs, const void *ct, size_t count)
279 {
280 const unsigned char *su1, *su2;
281 int res = 0;
282
283 for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
284 if ((res = *su1 - *su2) != 0)
285 break;
286 return res;
287 }
288
289 static char __init *prom_strstr(const char *s1, const char *s2)
290 {
291 size_t l1, l2;
292
293 l2 = prom_strlen(s2);
294 if (!l2)
295 return (char *)s1;
296 l1 = prom_strlen(s1);
297 while (l1 >= l2) {
298 l1--;
299 if (!prom_memcmp(s1, s2, l2))
300 return (char *)s1;
301 s1++;
302 }
303 return NULL;
304 }
305
306 static size_t __init prom_strlcpy(char *dest, const char *src, size_t size)
307 {
308 size_t ret = prom_strlen(src);
309
310 if (size) {
311 size_t len = (ret >= size) ? size - 1 : ret;
312 memcpy(dest, src, len);
313 dest[len] = '\0';
314 }
315 return ret;
316 }
317
318 #ifdef CONFIG_PPC_PSERIES
319 static int __init prom_strtobool(const char *s, bool *res)
320 {
321 if (!s)
322 return -EINVAL;
323
324 switch (s[0]) {
325 case 'y':
326 case 'Y':
327 case '1':
328 *res = true;
329 return 0;
330 case 'n':
331 case 'N':
332 case '0':
333 *res = false;
334 return 0;
335 case 'o':
336 case 'O':
337 switch (s[1]) {
338 case 'n':
339 case 'N':
340 *res = true;
341 return 0;
342 case 'f':
343 case 'F':
344 *res = false;
345 return 0;
346 default:
347 break;
348 }
349 default:
350 break;
351 }
352
353 return -EINVAL;
354 }
355 #endif
356
357
358
359
360
361 static int __init call_prom(const char *service, int nargs, int nret, ...)
362 {
363 int i;
364 struct prom_args args;
365 va_list list;
366
367 args.service = cpu_to_be32(ADDR(service));
368 args.nargs = cpu_to_be32(nargs);
369 args.nret = cpu_to_be32(nret);
370
371 va_start(list, nret);
372 for (i = 0; i < nargs; i++)
373 args.args[i] = cpu_to_be32(va_arg(list, prom_arg_t));
374 va_end(list);
375
376 for (i = 0; i < nret; i++)
377 args.args[nargs+i] = 0;
378
379 if (enter_prom(&args, prom_entry) < 0)
380 return PROM_ERROR;
381
382 return (nret > 0) ? be32_to_cpu(args.args[nargs]) : 0;
383 }
384
385 static int __init call_prom_ret(const char *service, int nargs, int nret,
386 prom_arg_t *rets, ...)
387 {
388 int i;
389 struct prom_args args;
390 va_list list;
391
392 args.service = cpu_to_be32(ADDR(service));
393 args.nargs = cpu_to_be32(nargs);
394 args.nret = cpu_to_be32(nret);
395
396 va_start(list, rets);
397 for (i = 0; i < nargs; i++)
398 args.args[i] = cpu_to_be32(va_arg(list, prom_arg_t));
399 va_end(list);
400
401 for (i = 0; i < nret; i++)
402 args.args[nargs+i] = 0;
403
404 if (enter_prom(&args, prom_entry) < 0)
405 return PROM_ERROR;
406
407 if (rets != NULL)
408 for (i = 1; i < nret; ++i)
409 rets[i-1] = be32_to_cpu(args.args[nargs+i]);
410
411 return (nret > 0) ? be32_to_cpu(args.args[nargs]) : 0;
412 }
413
414
415 static void __init prom_print(const char *msg)
416 {
417 const char *p, *q;
418
419 if (prom.stdout == 0)
420 return;
421
422 for (p = msg; *p != 0; p = q) {
423 for (q = p; *q != 0 && *q != '\n'; ++q)
424 ;
425 if (q > p)
426 call_prom("write", 3, 1, prom.stdout, p, q - p);
427 if (*q == 0)
428 break;
429 ++q;
430 call_prom("write", 3, 1, prom.stdout, ADDR("\r\n"), 2);
431 }
432 }
433
434
435
436
437
438
439 static void __init prom_print_hex(unsigned long val)
440 {
441 int i, nibbles = sizeof(val)*2;
442 char buf[sizeof(val)*2+1];
443
444 for (i = nibbles-1; i >= 0; i--) {
445 buf[i] = (val & 0xf) + '0';
446 if (buf[i] > '9')
447 buf[i] += ('a'-'0'-10);
448 val >>= 4;
449 }
450 buf[nibbles] = '\0';
451 call_prom("write", 3, 1, prom.stdout, buf, nibbles);
452 }
453
454
455 #define UL_DIGITS 21
456 static void __init prom_print_dec(unsigned long val)
457 {
458 int i, size;
459 char buf[UL_DIGITS+1];
460
461 for (i = UL_DIGITS-1; i >= 0; i--) {
462 buf[i] = (val % 10) + '0';
463 val = val/10;
464 if (val == 0)
465 break;
466 }
467
468 size = UL_DIGITS - i;
469 call_prom("write", 3, 1, prom.stdout, buf+i, size);
470 }
471
472 __printf(1, 2)
473 static void __init prom_printf(const char *format, ...)
474 {
475 const char *p, *q, *s;
476 va_list args;
477 unsigned long v;
478 long vs;
479 int n = 0;
480
481 va_start(args, format);
482 for (p = format; *p != 0; p = q) {
483 for (q = p; *q != 0 && *q != '\n' && *q != '%'; ++q)
484 ;
485 if (q > p)
486 call_prom("write", 3, 1, prom.stdout, p, q - p);
487 if (*q == 0)
488 break;
489 if (*q == '\n') {
490 ++q;
491 call_prom("write", 3, 1, prom.stdout,
492 ADDR("\r\n"), 2);
493 continue;
494 }
495 ++q;
496 if (*q == 0)
497 break;
498 while (*q == 'l') {
499 ++q;
500 ++n;
501 }
502 switch (*q) {
503 case 's':
504 ++q;
505 s = va_arg(args, const char *);
506 prom_print(s);
507 break;
508 case 'x':
509 ++q;
510 switch (n) {
511 case 0:
512 v = va_arg(args, unsigned int);
513 break;
514 case 1:
515 v = va_arg(args, unsigned long);
516 break;
517 case 2:
518 default:
519 v = va_arg(args, unsigned long long);
520 break;
521 }
522 prom_print_hex(v);
523 break;
524 case 'u':
525 ++q;
526 switch (n) {
527 case 0:
528 v = va_arg(args, unsigned int);
529 break;
530 case 1:
531 v = va_arg(args, unsigned long);
532 break;
533 case 2:
534 default:
535 v = va_arg(args, unsigned long long);
536 break;
537 }
538 prom_print_dec(v);
539 break;
540 case 'd':
541 ++q;
542 switch (n) {
543 case 0:
544 vs = va_arg(args, int);
545 break;
546 case 1:
547 vs = va_arg(args, long);
548 break;
549 case 2:
550 default:
551 vs = va_arg(args, long long);
552 break;
553 }
554 if (vs < 0) {
555 prom_print("-");
556 vs = -vs;
557 }
558 prom_print_dec(vs);
559 break;
560 }
561 }
562 va_end(args);
563 }
564
565
566 static unsigned int __init prom_claim(unsigned long virt, unsigned long size,
567 unsigned long align)
568 {
569
570 if (align == 0 && (OF_WORKAROUNDS & OF_WA_CLAIM)) {
571
572
573
574
575 int ret;
576 prom_arg_t result;
577
578 ret = call_prom_ret("call-method", 5, 2, &result,
579 ADDR("claim"), prom.memory,
580 align, size, virt);
581 if (ret != 0 || result == -1)
582 return -1;
583 ret = call_prom_ret("call-method", 5, 2, &result,
584 ADDR("claim"), prom.mmumap,
585 align, size, virt);
586 if (ret != 0) {
587 call_prom("call-method", 4, 1, ADDR("release"),
588 prom.memory, size, virt);
589 return -1;
590 }
591
592 call_prom("call-method", 6, 1,
593 ADDR("map"), prom.mmumap, 0x12, size, virt, virt);
594 return virt;
595 }
596 return call_prom("claim", 3, 1, (prom_arg_t)virt, (prom_arg_t)size,
597 (prom_arg_t)align);
598 }
599
600 static void __init __attribute__((noreturn)) prom_panic(const char *reason)
601 {
602 prom_print(reason);
603
604
605 if (of_platform == PLATFORM_POWERMAC)
606 asm("trap\n");
607
608
609 call_prom("exit", 0, 0);
610
611 for (;;)
612 ;
613 }
614
615
616 static int __init prom_next_node(phandle *nodep)
617 {
618 phandle node;
619
620 if ((node = *nodep) != 0
621 && (*nodep = call_prom("child", 1, 1, node)) != 0)
622 return 1;
623 if ((*nodep = call_prom("peer", 1, 1, node)) != 0)
624 return 1;
625 for (;;) {
626 if ((node = call_prom("parent", 1, 1, node)) == 0)
627 return 0;
628 if ((*nodep = call_prom("peer", 1, 1, node)) != 0)
629 return 1;
630 }
631 }
632
633 static inline int __init prom_getprop(phandle node, const char *pname,
634 void *value, size_t valuelen)
635 {
636 return call_prom("getprop", 4, 1, node, ADDR(pname),
637 (u32)(unsigned long) value, (u32) valuelen);
638 }
639
640 static inline int __init prom_getproplen(phandle node, const char *pname)
641 {
642 return call_prom("getproplen", 2, 1, node, ADDR(pname));
643 }
644
645 static void add_string(char **str, const char *q)
646 {
647 char *p = *str;
648
649 while (*q)
650 *p++ = *q++;
651 *p++ = ' ';
652 *str = p;
653 }
654
655 static char *tohex(unsigned int x)
656 {
657 static const char digits[] __initconst = "0123456789abcdef";
658 static char result[9] __prombss;
659 int i;
660
661 result[8] = 0;
662 i = 8;
663 do {
664 --i;
665 result[i] = digits[x & 0xf];
666 x >>= 4;
667 } while (x != 0 && i > 0);
668 return &result[i];
669 }
670
671 static int __init prom_setprop(phandle node, const char *nodename,
672 const char *pname, void *value, size_t valuelen)
673 {
674 char cmd[256], *p;
675
676 if (!(OF_WORKAROUNDS & OF_WA_LONGTRAIL))
677 return call_prom("setprop", 4, 1, node, ADDR(pname),
678 (u32)(unsigned long) value, (u32) valuelen);
679
680
681 p = cmd;
682 add_string(&p, "dev");
683 add_string(&p, nodename);
684 add_string(&p, tohex((u32)(unsigned long) value));
685 add_string(&p, tohex(valuelen));
686 add_string(&p, tohex(ADDR(pname)));
687 add_string(&p, tohex(prom_strlen(pname)));
688 add_string(&p, "property");
689 *p = 0;
690 return call_prom("interpret", 1, 1, (u32)(unsigned long) cmd);
691 }
692
693
694 #define isxdigit(c) (('0' <= (c) && (c) <= '9') \
695 || ('a' <= (c) && (c) <= 'f') \
696 || ('A' <= (c) && (c) <= 'F'))
697
698 #define isdigit(c) ('0' <= (c) && (c) <= '9')
699 #define islower(c) ('a' <= (c) && (c) <= 'z')
700 #define toupper(c) (islower(c) ? ((c) - 'a' + 'A') : (c))
701
702 static unsigned long prom_strtoul(const char *cp, const char **endp)
703 {
704 unsigned long result = 0, base = 10, value;
705
706 if (*cp == '0') {
707 base = 8;
708 cp++;
709 if (toupper(*cp) == 'X') {
710 cp++;
711 base = 16;
712 }
713 }
714
715 while (isxdigit(*cp) &&
716 (value = isdigit(*cp) ? *cp - '0' : toupper(*cp) - 'A' + 10) < base) {
717 result = result * base + value;
718 cp++;
719 }
720
721 if (endp)
722 *endp = cp;
723
724 return result;
725 }
726
727 static unsigned long prom_memparse(const char *ptr, const char **retptr)
728 {
729 unsigned long ret = prom_strtoul(ptr, retptr);
730 int shift = 0;
731
732
733
734
735
736
737 if ('G' == **retptr || 'g' == **retptr)
738 shift = 30;
739
740 if ('M' == **retptr || 'm' == **retptr)
741 shift = 20;
742
743 if ('K' == **retptr || 'k' == **retptr)
744 shift = 10;
745
746 if (shift) {
747 ret <<= shift;
748 (*retptr)++;
749 }
750
751 return ret;
752 }
753
754
755
756
757
758 static void __init early_cmdline_parse(void)
759 {
760 const char *opt;
761
762 char *p;
763 int l = 0;
764
765 prom_cmd_line[0] = 0;
766 p = prom_cmd_line;
767 if ((long)prom.chosen > 0)
768 l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
769 if (IS_ENABLED(CONFIG_CMDLINE_BOOL) && (l <= 0 || p[0] == '\0'))
770 prom_strlcpy(prom_cmd_line, CONFIG_CMDLINE, sizeof(prom_cmd_line));
771 prom_printf("command line: %s\n", prom_cmd_line);
772
773 #ifdef CONFIG_PPC64
774 opt = prom_strstr(prom_cmd_line, "iommu=");
775 if (opt) {
776 prom_printf("iommu opt is: %s\n", opt);
777 opt += 6;
778 while (*opt && *opt == ' ')
779 opt++;
780 if (!prom_strncmp(opt, "off", 3))
781 prom_iommu_off = 1;
782 else if (!prom_strncmp(opt, "force", 5))
783 prom_iommu_force_on = 1;
784 }
785 #endif
786 opt = prom_strstr(prom_cmd_line, "mem=");
787 if (opt) {
788 opt += 4;
789 prom_memory_limit = prom_memparse(opt, (const char **)&opt);
790 #ifdef CONFIG_PPC64
791
792 prom_memory_limit = ALIGN(prom_memory_limit, 0x1000000);
793 #endif
794 }
795
796 #ifdef CONFIG_PPC_PSERIES
797 prom_radix_disable = !IS_ENABLED(CONFIG_PPC_RADIX_MMU_DEFAULT);
798 opt = prom_strstr(prom_cmd_line, "disable_radix");
799 if (opt) {
800 opt += 13;
801 if (*opt && *opt == '=') {
802 bool val;
803
804 if (prom_strtobool(++opt, &val))
805 prom_radix_disable = false;
806 else
807 prom_radix_disable = val;
808 } else
809 prom_radix_disable = true;
810 }
811 if (prom_radix_disable)
812 prom_debug("Radix disabled from cmdline\n");
813
814 opt = prom_strstr(prom_cmd_line, "xive=off");
815 if (opt) {
816 prom_xive_disable = true;
817 prom_debug("XIVE disabled from cmdline\n");
818 }
819 #endif
820
821 #ifdef CONFIG_PPC_SVM
822 opt = prom_strstr(prom_cmd_line, "svm=");
823 if (opt) {
824 bool val;
825
826 opt += sizeof("svm=") - 1;
827 if (!prom_strtobool(opt, &val))
828 prom_svm_enable = val;
829 }
830 #endif
831 }
832
833 #ifdef CONFIG_PPC_PSERIES
834
835
836
837
838
839
840
841
842
843 #define NUM_VECTORS(n) ((n) - 1)
844
845
846
847
848
849 #define VECTOR_LENGTH(n) (1 + (n) - 2)
850
851 struct option_vector1 {
852 u8 byte1;
853 u8 arch_versions;
854 u8 arch_versions3;
855 } __packed;
856
857 struct option_vector2 {
858 u8 byte1;
859 __be16 reserved;
860 __be32 real_base;
861 __be32 real_size;
862 __be32 virt_base;
863 __be32 virt_size;
864 __be32 load_base;
865 __be32 min_rma;
866 __be32 min_load;
867 u8 min_rma_percent;
868 u8 max_pft_size;
869 } __packed;
870
871 struct option_vector3 {
872 u8 byte1;
873 u8 byte2;
874 } __packed;
875
876 struct option_vector4 {
877 u8 byte1;
878 u8 min_vp_cap;
879 } __packed;
880
881 struct option_vector5 {
882 u8 byte1;
883 u8 byte2;
884 u8 byte3;
885 u8 cmo;
886 u8 associativity;
887 u8 bin_opts;
888 u8 micro_checkpoint;
889 u8 reserved0;
890 __be32 max_cpus;
891 __be16 papr_level;
892 __be16 reserved1;
893 u8 platform_facilities;
894 u8 reserved2;
895 __be16 reserved3;
896 u8 subprocessors;
897 u8 byte22;
898 u8 intarch;
899 u8 mmu;
900 u8 hash_ext;
901 u8 radix_ext;
902 } __packed;
903
904 struct option_vector6 {
905 u8 reserved;
906 u8 secondary_pteg;
907 u8 os_name;
908 } __packed;
909
910 struct ibm_arch_vec {
911 struct { u32 mask, val; } pvrs[12];
912
913 u8 num_vectors;
914
915 u8 vec1_len;
916 struct option_vector1 vec1;
917
918 u8 vec2_len;
919 struct option_vector2 vec2;
920
921 u8 vec3_len;
922 struct option_vector3 vec3;
923
924 u8 vec4_len;
925 struct option_vector4 vec4;
926
927 u8 vec5_len;
928 struct option_vector5 vec5;
929
930 u8 vec6_len;
931 struct option_vector6 vec6;
932 } __packed;
933
934 static const struct ibm_arch_vec ibm_architecture_vec_template __initconst = {
935 .pvrs = {
936 {
937 .mask = cpu_to_be32(0xfffe0000),
938 .val = cpu_to_be32(0x003a0000),
939 },
940 {
941 .mask = cpu_to_be32(0xffff0000),
942 .val = cpu_to_be32(0x003e0000),
943 },
944 {
945 .mask = cpu_to_be32(0xffff0000),
946 .val = cpu_to_be32(0x003f0000),
947 },
948 {
949 .mask = cpu_to_be32(0xffff0000),
950 .val = cpu_to_be32(0x004b0000),
951 },
952 {
953 .mask = cpu_to_be32(0xffff0000),
954 .val = cpu_to_be32(0x004c0000),
955 },
956 {
957 .mask = cpu_to_be32(0xffff0000),
958 .val = cpu_to_be32(0x004d0000),
959 },
960 {
961 .mask = cpu_to_be32(0xffff0000),
962 .val = cpu_to_be32(0x004e0000),
963 },
964 {
965 .mask = cpu_to_be32(0xffffffff),
966 .val = cpu_to_be32(0x0f000005),
967 },
968 {
969 .mask = cpu_to_be32(0xffffffff),
970 .val = cpu_to_be32(0x0f000004),
971 },
972 {
973 .mask = cpu_to_be32(0xffffffff),
974 .val = cpu_to_be32(0x0f000003),
975 },
976 {
977 .mask = cpu_to_be32(0xffffffff),
978 .val = cpu_to_be32(0x0f000002),
979 },
980 {
981 .mask = cpu_to_be32(0xfffffffe),
982 .val = cpu_to_be32(0x0f000001),
983 },
984 },
985
986 .num_vectors = NUM_VECTORS(6),
987
988 .vec1_len = VECTOR_LENGTH(sizeof(struct option_vector1)),
989 .vec1 = {
990 .byte1 = 0,
991 .arch_versions = OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 |
992 OV1_PPC_2_04 | OV1_PPC_2_05 | OV1_PPC_2_06 | OV1_PPC_2_07,
993 .arch_versions3 = OV1_PPC_3_00,
994 },
995
996 .vec2_len = VECTOR_LENGTH(sizeof(struct option_vector2)),
997
998 .vec2 = {
999 .byte1 = OV2_REAL_MODE,
1000 .reserved = 0,
1001 .real_base = cpu_to_be32(0xffffffff),
1002 .real_size = cpu_to_be32(0xffffffff),
1003 .virt_base = cpu_to_be32(0xffffffff),
1004 .virt_size = cpu_to_be32(0xffffffff),
1005 .load_base = cpu_to_be32(0xffffffff),
1006 .min_rma = cpu_to_be32(512),
1007 .min_load = cpu_to_be32(0xffffffff),
1008 .min_rma_percent = 0,
1009 .max_pft_size = 48,
1010 },
1011
1012 .vec3_len = VECTOR_LENGTH(sizeof(struct option_vector3)),
1013
1014 .vec3 = {
1015 .byte1 = 0,
1016 .byte2 = OV3_FP | OV3_VMX | OV3_DFP,
1017 },
1018
1019 .vec4_len = VECTOR_LENGTH(sizeof(struct option_vector4)),
1020
1021 .vec4 = {
1022 .byte1 = 0,
1023 .min_vp_cap = OV4_MIN_ENT_CAP,
1024 },
1025
1026 .vec5_len = VECTOR_LENGTH(sizeof(struct option_vector5)),
1027
1028 .vec5 = {
1029 .byte1 = 0,
1030 .byte2 = OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) |
1031 OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) |
1032 #ifdef CONFIG_PCI_MSI
1033
1034 OV5_FEAT(OV5_MSI),
1035 #else
1036 0,
1037 #endif
1038 .byte3 = 0,
1039 .cmo =
1040 #ifdef CONFIG_PPC_SMLPAR
1041 OV5_FEAT(OV5_CMO) | OV5_FEAT(OV5_XCMO),
1042 #else
1043 0,
1044 #endif
1045 .associativity = OV5_FEAT(OV5_TYPE1_AFFINITY) | OV5_FEAT(OV5_PRRN),
1046 .bin_opts = OV5_FEAT(OV5_RESIZE_HPT) | OV5_FEAT(OV5_HP_EVT),
1047 .micro_checkpoint = 0,
1048 .reserved0 = 0,
1049 .max_cpus = cpu_to_be32(NR_CPUS),
1050 .papr_level = 0,
1051 .reserved1 = 0,
1052 .platform_facilities = OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) | OV5_FEAT(OV5_PFO_HW_842),
1053 .reserved2 = 0,
1054 .reserved3 = 0,
1055 .subprocessors = 1,
1056 .byte22 = OV5_FEAT(OV5_DRMEM_V2) | OV5_FEAT(OV5_DRC_INFO),
1057 .intarch = 0,
1058 .mmu = 0,
1059 .hash_ext = 0,
1060 .radix_ext = 0,
1061 },
1062
1063
1064 .vec6_len = VECTOR_LENGTH(sizeof(struct option_vector6)),
1065 .vec6 = {
1066 .reserved = 0,
1067 .secondary_pteg = 0,
1068 .os_name = OV6_LINUX,
1069 },
1070 };
1071
1072 static struct ibm_arch_vec __prombss ibm_architecture_vec ____cacheline_aligned;
1073
1074
1075 #ifdef __BIG_ENDIAN__
1076 static const struct fake_elf {
1077 Elf32_Ehdr elfhdr;
1078 Elf32_Phdr phdr[2];
1079 struct chrpnote {
1080 u32 namesz;
1081 u32 descsz;
1082 u32 type;
1083 char name[8];
1084 struct chrpdesc {
1085 u32 real_mode;
1086 u32 real_base;
1087 u32 real_size;
1088 u32 virt_base;
1089 u32 virt_size;
1090 u32 load_base;
1091 } chrpdesc;
1092 } chrpnote;
1093 struct rpanote {
1094 u32 namesz;
1095 u32 descsz;
1096 u32 type;
1097 char name[24];
1098 struct rpadesc {
1099 u32 lpar_affinity;
1100 u32 min_rmo_size;
1101 u32 min_rmo_percent;
1102 u32 max_pft_size;
1103 u32 splpar;
1104 u32 min_load;
1105 u32 new_mem_def;
1106 u32 ignore_me;
1107 } rpadesc;
1108 } rpanote;
1109 } fake_elf __initconst = {
1110 .elfhdr = {
1111 .e_ident = { 0x7f, 'E', 'L', 'F',
1112 ELFCLASS32, ELFDATA2MSB, EV_CURRENT },
1113 .e_type = ET_EXEC,
1114 .e_machine = EM_PPC,
1115 .e_version = EV_CURRENT,
1116 .e_phoff = offsetof(struct fake_elf, phdr),
1117 .e_phentsize = sizeof(Elf32_Phdr),
1118 .e_phnum = 2
1119 },
1120 .phdr = {
1121 [0] = {
1122 .p_type = PT_NOTE,
1123 .p_offset = offsetof(struct fake_elf, chrpnote),
1124 .p_filesz = sizeof(struct chrpnote)
1125 }, [1] = {
1126 .p_type = PT_NOTE,
1127 .p_offset = offsetof(struct fake_elf, rpanote),
1128 .p_filesz = sizeof(struct rpanote)
1129 }
1130 },
1131 .chrpnote = {
1132 .namesz = sizeof("PowerPC"),
1133 .descsz = sizeof(struct chrpdesc),
1134 .type = 0x1275,
1135 .name = "PowerPC",
1136 .chrpdesc = {
1137 .real_mode = ~0U,
1138 .real_base = ~0U,
1139 .real_size = ~0U,
1140 .virt_base = ~0U,
1141 .virt_size = ~0U,
1142 .load_base = ~0U
1143 },
1144 },
1145 .rpanote = {
1146 .namesz = sizeof("IBM,RPA-Client-Config"),
1147 .descsz = sizeof(struct rpadesc),
1148 .type = 0x12759999,
1149 .name = "IBM,RPA-Client-Config",
1150 .rpadesc = {
1151 .lpar_affinity = 0,
1152 .min_rmo_size = 64,
1153 .min_rmo_percent = 0,
1154 .max_pft_size = 48,
1155 .splpar = 1,
1156 .min_load = ~0U,
1157 .new_mem_def = 0
1158 }
1159 }
1160 };
1161 #endif
1162
1163 static int __init prom_count_smt_threads(void)
1164 {
1165 phandle node;
1166 char type[64];
1167 unsigned int plen;
1168
1169
1170 for (node = 0; prom_next_node(&node); ) {
1171 type[0] = 0;
1172 prom_getprop(node, "device_type", type, sizeof(type));
1173
1174 if (prom_strcmp(type, "cpu"))
1175 continue;
1176
1177
1178
1179
1180
1181 plen = prom_getproplen(node, "ibm,ppc-interrupt-server#s");
1182 if (plen == PROM_ERROR)
1183 break;
1184 plen >>= 2;
1185 prom_debug("Found %lu smt threads per core\n", (unsigned long)plen);
1186
1187
1188 if (plen < 1 || plen > 64) {
1189 prom_printf("Threads per core %lu out of bounds, assuming 1\n",
1190 (unsigned long)plen);
1191 return 1;
1192 }
1193 return plen;
1194 }
1195 prom_debug("No threads found, assuming 1 per core\n");
1196
1197 return 1;
1198
1199 }
1200
1201 static void __init prom_parse_mmu_model(u8 val,
1202 struct platform_support *support)
1203 {
1204 switch (val) {
1205 case OV5_FEAT(OV5_MMU_DYNAMIC):
1206 case OV5_FEAT(OV5_MMU_EITHER):
1207 prom_debug("MMU - either supported\n");
1208 support->radix_mmu = !prom_radix_disable;
1209 support->hash_mmu = true;
1210 break;
1211 case OV5_FEAT(OV5_MMU_RADIX):
1212 prom_debug("MMU - radix only\n");
1213 if (prom_radix_disable) {
1214
1215
1216
1217
1218 prom_printf("WARNING: Ignoring cmdline option disable_radix\n");
1219 }
1220 support->radix_mmu = true;
1221 break;
1222 case OV5_FEAT(OV5_MMU_HASH):
1223 prom_debug("MMU - hash only\n");
1224 support->hash_mmu = true;
1225 break;
1226 default:
1227 prom_debug("Unknown mmu support option: 0x%x\n", val);
1228 break;
1229 }
1230 }
1231
1232 static void __init prom_parse_xive_model(u8 val,
1233 struct platform_support *support)
1234 {
1235 switch (val) {
1236 case OV5_FEAT(OV5_XIVE_EITHER):
1237 prom_debug("XIVE - either mode supported\n");
1238 support->xive = !prom_xive_disable;
1239 break;
1240 case OV5_FEAT(OV5_XIVE_EXPLOIT):
1241 prom_debug("XIVE - exploitation mode supported\n");
1242 if (prom_xive_disable) {
1243
1244
1245
1246
1247 prom_printf("WARNING: Ignoring cmdline option xive=off\n");
1248 }
1249 support->xive = true;
1250 break;
1251 case OV5_FEAT(OV5_XIVE_LEGACY):
1252 prom_debug("XIVE - legacy mode supported\n");
1253 break;
1254 default:
1255 prom_debug("Unknown xive support option: 0x%x\n", val);
1256 break;
1257 }
1258 }
1259
1260 static void __init prom_parse_platform_support(u8 index, u8 val,
1261 struct platform_support *support)
1262 {
1263 switch (index) {
1264 case OV5_INDX(OV5_MMU_SUPPORT):
1265 prom_parse_mmu_model(val & OV5_FEAT(OV5_MMU_SUPPORT), support);
1266 break;
1267 case OV5_INDX(OV5_RADIX_GTSE):
1268 if (val & OV5_FEAT(OV5_RADIX_GTSE)) {
1269 prom_debug("Radix - GTSE supported\n");
1270 support->radix_gtse = true;
1271 }
1272 break;
1273 case OV5_INDX(OV5_XIVE_SUPPORT):
1274 prom_parse_xive_model(val & OV5_FEAT(OV5_XIVE_SUPPORT),
1275 support);
1276 break;
1277 }
1278 }
1279
1280 static void __init prom_check_platform_support(void)
1281 {
1282 struct platform_support supported = {
1283 .hash_mmu = false,
1284 .radix_mmu = false,
1285 .radix_gtse = false,
1286 .xive = false
1287 };
1288 int prop_len = prom_getproplen(prom.chosen,
1289 "ibm,arch-vec-5-platform-support");
1290
1291
1292
1293
1294
1295
1296
1297 memcpy(&ibm_architecture_vec, &ibm_architecture_vec_template,
1298 sizeof(ibm_architecture_vec));
1299
1300 if (prop_len > 1) {
1301 int i;
1302 u8 vec[8];
1303 prom_debug("Found ibm,arch-vec-5-platform-support, len: %d\n",
1304 prop_len);
1305 if (prop_len > sizeof(vec))
1306 prom_printf("WARNING: ibm,arch-vec-5-platform-support longer than expected (len: %d)\n",
1307 prop_len);
1308 prom_getprop(prom.chosen, "ibm,arch-vec-5-platform-support",
1309 &vec, sizeof(vec));
1310 for (i = 0; i < sizeof(vec); i += 2) {
1311 prom_debug("%d: index = 0x%x val = 0x%x\n", i / 2
1312 , vec[i]
1313 , vec[i + 1]);
1314 prom_parse_platform_support(vec[i], vec[i + 1],
1315 &supported);
1316 }
1317 }
1318
1319 if (supported.radix_mmu && supported.radix_gtse &&
1320 IS_ENABLED(CONFIG_PPC_RADIX_MMU)) {
1321
1322 prom_debug("Asking for radix with GTSE\n");
1323 ibm_architecture_vec.vec5.mmu = OV5_FEAT(OV5_MMU_RADIX);
1324 ibm_architecture_vec.vec5.radix_ext = OV5_FEAT(OV5_RADIX_GTSE);
1325 } else if (supported.hash_mmu) {
1326
1327 prom_debug("Asking for hash\n");
1328 ibm_architecture_vec.vec5.mmu = OV5_FEAT(OV5_MMU_HASH);
1329 } else {
1330
1331 prom_debug("Assuming legacy hash support\n");
1332 }
1333
1334 if (supported.xive) {
1335 prom_debug("Asking for XIVE\n");
1336 ibm_architecture_vec.vec5.intarch = OV5_FEAT(OV5_XIVE_EXPLOIT);
1337 }
1338 }
1339
1340 static void __init prom_send_capabilities(void)
1341 {
1342 ihandle root;
1343 prom_arg_t ret;
1344 u32 cores;
1345
1346
1347 prom_check_platform_support();
1348
1349 root = call_prom("open", 1, 1, ADDR("/"));
1350 if (root != 0) {
1351
1352
1353
1354
1355
1356
1357
1358 cores = DIV_ROUND_UP(NR_CPUS, prom_count_smt_threads());
1359 prom_printf("Max number of cores passed to firmware: %u (NR_CPUS = %d)\n",
1360 cores, NR_CPUS);
1361
1362 ibm_architecture_vec.vec5.max_cpus = cpu_to_be32(cores);
1363
1364
1365 prom_printf("Calling ibm,client-architecture-support...");
1366 if (call_prom_ret("call-method", 3, 2, &ret,
1367 ADDR("ibm,client-architecture-support"),
1368 root,
1369 ADDR(&ibm_architecture_vec)) == 0) {
1370
1371 if (ret)
1372 prom_printf("\nWARNING: ibm,client-architecture"
1373 "-support call FAILED!\n");
1374 call_prom("close", 1, 0, root);
1375 prom_printf(" done\n");
1376 return;
1377 }
1378 call_prom("close", 1, 0, root);
1379 prom_printf(" not implemented\n");
1380 }
1381
1382 #ifdef __BIG_ENDIAN__
1383 {
1384 ihandle elfloader;
1385
1386
1387 elfloader = call_prom("open", 1, 1,
1388 ADDR("/packages/elf-loader"));
1389 if (elfloader == 0) {
1390 prom_printf("couldn't open /packages/elf-loader\n");
1391 return;
1392 }
1393 call_prom("call-method", 3, 1, ADDR("process-elf-header"),
1394 elfloader, ADDR(&fake_elf));
1395 call_prom("close", 1, 0, elfloader);
1396 }
1397 #endif
1398 }
1399 #endif
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434 static unsigned long __init alloc_up(unsigned long size, unsigned long align)
1435 {
1436 unsigned long base = alloc_bottom;
1437 unsigned long addr = 0;
1438
1439 if (align)
1440 base = _ALIGN_UP(base, align);
1441 prom_debug("%s(%lx, %lx)\n", __func__, size, align);
1442 if (ram_top == 0)
1443 prom_panic("alloc_up() called with mem not initialized\n");
1444
1445 if (align)
1446 base = _ALIGN_UP(alloc_bottom, align);
1447 else
1448 base = alloc_bottom;
1449
1450 for(; (base + size) <= alloc_top;
1451 base = _ALIGN_UP(base + 0x100000, align)) {
1452 prom_debug(" trying: 0x%lx\n\r", base);
1453 addr = (unsigned long)prom_claim(base, size, 0);
1454 if (addr != PROM_ERROR && addr != 0)
1455 break;
1456 addr = 0;
1457 if (align == 0)
1458 break;
1459 }
1460 if (addr == 0)
1461 return 0;
1462 alloc_bottom = addr + size;
1463
1464 prom_debug(" -> %lx\n", addr);
1465 prom_debug(" alloc_bottom : %lx\n", alloc_bottom);
1466 prom_debug(" alloc_top : %lx\n", alloc_top);
1467 prom_debug(" alloc_top_hi : %lx\n", alloc_top_high);
1468 prom_debug(" rmo_top : %lx\n", rmo_top);
1469 prom_debug(" ram_top : %lx\n", ram_top);
1470
1471 return addr;
1472 }
1473
1474
1475
1476
1477
1478
1479 static unsigned long __init alloc_down(unsigned long size, unsigned long align,
1480 int highmem)
1481 {
1482 unsigned long base, addr = 0;
1483
1484 prom_debug("%s(%lx, %lx, %s)\n", __func__, size, align,
1485 highmem ? "(high)" : "(low)");
1486 if (ram_top == 0)
1487 prom_panic("alloc_down() called with mem not initialized\n");
1488
1489 if (highmem) {
1490
1491 addr = _ALIGN_DOWN(alloc_top_high - size, align);
1492 if (addr <= alloc_bottom)
1493 return 0;
1494
1495
1496
1497
1498 if (addr < rmo_top) {
1499
1500 if (alloc_top == rmo_top)
1501 alloc_top = rmo_top = addr;
1502 else
1503 return 0;
1504 }
1505 alloc_top_high = addr;
1506 goto bail;
1507 }
1508
1509 base = _ALIGN_DOWN(alloc_top - size, align);
1510 for (; base > alloc_bottom;
1511 base = _ALIGN_DOWN(base - 0x100000, align)) {
1512 prom_debug(" trying: 0x%lx\n\r", base);
1513 addr = (unsigned long)prom_claim(base, size, 0);
1514 if (addr != PROM_ERROR && addr != 0)
1515 break;
1516 addr = 0;
1517 }
1518 if (addr == 0)
1519 return 0;
1520 alloc_top = addr;
1521
1522 bail:
1523 prom_debug(" -> %lx\n", addr);
1524 prom_debug(" alloc_bottom : %lx\n", alloc_bottom);
1525 prom_debug(" alloc_top : %lx\n", alloc_top);
1526 prom_debug(" alloc_top_hi : %lx\n", alloc_top_high);
1527 prom_debug(" rmo_top : %lx\n", rmo_top);
1528 prom_debug(" ram_top : %lx\n", ram_top);
1529
1530 return addr;
1531 }
1532
1533
1534
1535
1536 static unsigned long __init prom_next_cell(int s, cell_t **cellp)
1537 {
1538 cell_t *p = *cellp;
1539 unsigned long r = 0;
1540
1541
1542 while (s > sizeof(unsigned long) / 4) {
1543 p++;
1544 s--;
1545 }
1546 r = be32_to_cpu(*p++);
1547 #ifdef CONFIG_PPC64
1548 if (s > 1) {
1549 r <<= 32;
1550 r |= be32_to_cpu(*(p++));
1551 }
1552 #endif
1553 *cellp = p;
1554 return r;
1555 }
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565 static void __init reserve_mem(u64 base, u64 size)
1566 {
1567 u64 top = base + size;
1568 unsigned long cnt = mem_reserve_cnt;
1569
1570 if (size == 0)
1571 return;
1572
1573
1574
1575
1576
1577 base = _ALIGN_DOWN(base, PAGE_SIZE);
1578 top = _ALIGN_UP(top, PAGE_SIZE);
1579 size = top - base;
1580
1581 if (cnt >= (MEM_RESERVE_MAP_SIZE - 1))
1582 prom_panic("Memory reserve map exhausted !\n");
1583 mem_reserve_map[cnt].base = cpu_to_be64(base);
1584 mem_reserve_map[cnt].size = cpu_to_be64(size);
1585 mem_reserve_cnt = cnt + 1;
1586 }
1587
1588
1589
1590
1591
1592 static void __init prom_init_mem(void)
1593 {
1594 phandle node;
1595 char type[64];
1596 unsigned int plen;
1597 cell_t *p, *endp;
1598 __be32 val;
1599 u32 rac, rsc;
1600
1601
1602
1603
1604
1605
1606 val = cpu_to_be32(2);
1607 prom_getprop(prom.root, "#address-cells", &val, sizeof(val));
1608 rac = be32_to_cpu(val);
1609 val = cpu_to_be32(1);
1610 prom_getprop(prom.root, "#size-cells", &val, sizeof(rsc));
1611 rsc = be32_to_cpu(val);
1612 prom_debug("root_addr_cells: %x\n", rac);
1613 prom_debug("root_size_cells: %x\n", rsc);
1614
1615 prom_debug("scanning memory:\n");
1616
1617 for (node = 0; prom_next_node(&node); ) {
1618 type[0] = 0;
1619 prom_getprop(node, "device_type", type, sizeof(type));
1620
1621 if (type[0] == 0) {
1622
1623
1624
1625
1626 prom_getprop(node, "name", type, sizeof(type));
1627 }
1628 if (prom_strcmp(type, "memory"))
1629 continue;
1630
1631 plen = prom_getprop(node, "reg", regbuf, sizeof(regbuf));
1632 if (plen > sizeof(regbuf)) {
1633 prom_printf("memory node too large for buffer !\n");
1634 plen = sizeof(regbuf);
1635 }
1636 p = regbuf;
1637 endp = p + (plen / sizeof(cell_t));
1638
1639 #ifdef DEBUG_PROM
1640 memset(prom_scratch, 0, sizeof(prom_scratch));
1641 call_prom("package-to-path", 3, 1, node, prom_scratch,
1642 sizeof(prom_scratch) - 1);
1643 prom_debug(" node %s :\n", prom_scratch);
1644 #endif
1645
1646 while ((endp - p) >= (rac + rsc)) {
1647 unsigned long base, size;
1648
1649 base = prom_next_cell(rac, &p);
1650 size = prom_next_cell(rsc, &p);
1651
1652 if (size == 0)
1653 continue;
1654 prom_debug(" %lx %lx\n", base, size);
1655 if (base == 0 && (of_platform & PLATFORM_LPAR))
1656 rmo_top = size;
1657 if ((base + size) > ram_top)
1658 ram_top = base + size;
1659 }
1660 }
1661
1662 alloc_bottom = PAGE_ALIGN((unsigned long)&_end + 0x4000);
1663
1664
1665
1666
1667
1668
1669
1670 alloc_top_high = ram_top;
1671
1672 if (prom_memory_limit) {
1673 if (prom_memory_limit <= alloc_bottom) {
1674 prom_printf("Ignoring mem=%lx <= alloc_bottom.\n",
1675 prom_memory_limit);
1676 prom_memory_limit = 0;
1677 } else if (prom_memory_limit >= ram_top) {
1678 prom_printf("Ignoring mem=%lx >= ram_top.\n",
1679 prom_memory_limit);
1680 prom_memory_limit = 0;
1681 } else {
1682 ram_top = prom_memory_limit;
1683 rmo_top = min(rmo_top, prom_memory_limit);
1684 }
1685 }
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695 if (!rmo_top)
1696 rmo_top = ram_top;
1697 rmo_top = min(0x30000000ul, rmo_top);
1698 alloc_top = rmo_top;
1699 alloc_top_high = ram_top;
1700
1701
1702
1703
1704
1705 if (prom_initrd_start &&
1706 prom_initrd_start < rmo_top &&
1707 prom_initrd_end > alloc_bottom)
1708 alloc_bottom = PAGE_ALIGN(prom_initrd_end);
1709
1710 prom_printf("memory layout at init:\n");
1711 prom_printf(" memory_limit : %lx (16 MB aligned)\n",
1712 prom_memory_limit);
1713 prom_printf(" alloc_bottom : %lx\n", alloc_bottom);
1714 prom_printf(" alloc_top : %lx\n", alloc_top);
1715 prom_printf(" alloc_top_hi : %lx\n", alloc_top_high);
1716 prom_printf(" rmo_top : %lx\n", rmo_top);
1717 prom_printf(" ram_top : %lx\n", ram_top);
1718 }
1719
1720 static void __init prom_close_stdin(void)
1721 {
1722 __be32 val;
1723 ihandle stdin;
1724
1725 if (prom_getprop(prom.chosen, "stdin", &val, sizeof(val)) > 0) {
1726 stdin = be32_to_cpu(val);
1727 call_prom("close", 1, 0, stdin);
1728 }
1729 }
1730
1731 #ifdef CONFIG_PPC_SVM
1732 static int prom_rtas_hcall(uint64_t args)
1733 {
1734 register uint64_t arg1 asm("r3") = H_RTAS;
1735 register uint64_t arg2 asm("r4") = args;
1736
1737 asm volatile("sc 1\n" : "=r" (arg1) :
1738 "r" (arg1),
1739 "r" (arg2) :);
1740 return arg1;
1741 }
1742
1743 static struct rtas_args __prombss os_term_args;
1744
1745 static void __init prom_rtas_os_term(char *str)
1746 {
1747 phandle rtas_node;
1748 __be32 val;
1749 u32 token;
1750
1751 prom_debug("%s: start...\n", __func__);
1752 rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas"));
1753 prom_debug("rtas_node: %x\n", rtas_node);
1754 if (!PHANDLE_VALID(rtas_node))
1755 return;
1756
1757 val = 0;
1758 prom_getprop(rtas_node, "ibm,os-term", &val, sizeof(val));
1759 token = be32_to_cpu(val);
1760 prom_debug("ibm,os-term: %x\n", token);
1761 if (token == 0)
1762 prom_panic("Could not get token for ibm,os-term\n");
1763 os_term_args.token = cpu_to_be32(token);
1764 os_term_args.nargs = cpu_to_be32(1);
1765 os_term_args.nret = cpu_to_be32(1);
1766 os_term_args.args[0] = cpu_to_be32(__pa(str));
1767 prom_rtas_hcall((uint64_t)&os_term_args);
1768 }
1769 #endif
1770
1771
1772
1773
1774 static void __init prom_instantiate_rtas(void)
1775 {
1776 phandle rtas_node;
1777 ihandle rtas_inst;
1778 u32 base, entry = 0;
1779 __be32 val;
1780 u32 size = 0;
1781
1782 prom_debug("prom_instantiate_rtas: start...\n");
1783
1784 rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas"));
1785 prom_debug("rtas_node: %x\n", rtas_node);
1786 if (!PHANDLE_VALID(rtas_node))
1787 return;
1788
1789 val = 0;
1790 prom_getprop(rtas_node, "rtas-size", &val, sizeof(size));
1791 size = be32_to_cpu(val);
1792 if (size == 0)
1793 return;
1794
1795 base = alloc_down(size, PAGE_SIZE, 0);
1796 if (base == 0)
1797 prom_panic("Could not allocate memory for RTAS\n");
1798
1799 rtas_inst = call_prom("open", 1, 1, ADDR("/rtas"));
1800 if (!IHANDLE_VALID(rtas_inst)) {
1801 prom_printf("opening rtas package failed (%x)\n", rtas_inst);
1802 return;
1803 }
1804
1805 prom_printf("instantiating rtas at 0x%x...", base);
1806
1807 if (call_prom_ret("call-method", 3, 2, &entry,
1808 ADDR("instantiate-rtas"),
1809 rtas_inst, base) != 0
1810 || entry == 0) {
1811 prom_printf(" failed\n");
1812 return;
1813 }
1814 prom_printf(" done\n");
1815
1816 reserve_mem(base, size);
1817
1818 val = cpu_to_be32(base);
1819 prom_setprop(rtas_node, "/rtas", "linux,rtas-base",
1820 &val, sizeof(val));
1821 val = cpu_to_be32(entry);
1822 prom_setprop(rtas_node, "/rtas", "linux,rtas-entry",
1823 &val, sizeof(val));
1824
1825
1826 if (prom_getprop(rtas_node, "query-cpu-stopped-state",
1827 &val, sizeof(val)) != PROM_ERROR)
1828 rtas_has_query_cpu_stopped = true;
1829
1830 prom_debug("rtas base = 0x%x\n", base);
1831 prom_debug("rtas entry = 0x%x\n", entry);
1832 prom_debug("rtas size = 0x%x\n", size);
1833
1834 prom_debug("prom_instantiate_rtas: end...\n");
1835 }
1836
1837 #ifdef CONFIG_PPC64
1838
1839
1840
1841 static void __init prom_instantiate_sml(void)
1842 {
1843 phandle ibmvtpm_node;
1844 ihandle ibmvtpm_inst;
1845 u32 entry = 0, size = 0, succ = 0;
1846 u64 base;
1847 __be32 val;
1848
1849 prom_debug("prom_instantiate_sml: start...\n");
1850
1851 ibmvtpm_node = call_prom("finddevice", 1, 1, ADDR("/vdevice/vtpm"));
1852 prom_debug("ibmvtpm_node: %x\n", ibmvtpm_node);
1853 if (!PHANDLE_VALID(ibmvtpm_node))
1854 return;
1855
1856 ibmvtpm_inst = call_prom("open", 1, 1, ADDR("/vdevice/vtpm"));
1857 if (!IHANDLE_VALID(ibmvtpm_inst)) {
1858 prom_printf("opening vtpm package failed (%x)\n", ibmvtpm_inst);
1859 return;
1860 }
1861
1862 if (prom_getprop(ibmvtpm_node, "ibm,sml-efi-reformat-supported",
1863 &val, sizeof(val)) != PROM_ERROR) {
1864 if (call_prom_ret("call-method", 2, 2, &succ,
1865 ADDR("reformat-sml-to-efi-alignment"),
1866 ibmvtpm_inst) != 0 || succ == 0) {
1867 prom_printf("Reformat SML to EFI alignment failed\n");
1868 return;
1869 }
1870
1871 if (call_prom_ret("call-method", 2, 2, &size,
1872 ADDR("sml-get-allocated-size"),
1873 ibmvtpm_inst) != 0 || size == 0) {
1874 prom_printf("SML get allocated size failed\n");
1875 return;
1876 }
1877 } else {
1878 if (call_prom_ret("call-method", 2, 2, &size,
1879 ADDR("sml-get-handover-size"),
1880 ibmvtpm_inst) != 0 || size == 0) {
1881 prom_printf("SML get handover size failed\n");
1882 return;
1883 }
1884 }
1885
1886 base = alloc_down(size, PAGE_SIZE, 0);
1887 if (base == 0)
1888 prom_panic("Could not allocate memory for sml\n");
1889
1890 prom_printf("instantiating sml at 0x%llx...", base);
1891
1892 memset((void *)base, 0, size);
1893
1894 if (call_prom_ret("call-method", 4, 2, &entry,
1895 ADDR("sml-handover"),
1896 ibmvtpm_inst, size, base) != 0 || entry == 0) {
1897 prom_printf("SML handover failed\n");
1898 return;
1899 }
1900 prom_printf(" done\n");
1901
1902 reserve_mem(base, size);
1903
1904 prom_setprop(ibmvtpm_node, "/vdevice/vtpm", "linux,sml-base",
1905 &base, sizeof(base));
1906 prom_setprop(ibmvtpm_node, "/vdevice/vtpm", "linux,sml-size",
1907 &size, sizeof(size));
1908
1909 prom_debug("sml base = 0x%llx\n", base);
1910 prom_debug("sml size = 0x%x\n", size);
1911
1912 prom_debug("prom_instantiate_sml: end...\n");
1913 }
1914
1915
1916
1917
1918 #ifdef __BIG_ENDIAN__
1919 static void __init prom_initialize_tce_table(void)
1920 {
1921 phandle node;
1922 ihandle phb_node;
1923 char compatible[64], type[64], model[64];
1924 char *path = prom_scratch;
1925 u64 base, align;
1926 u32 minalign, minsize;
1927 u64 tce_entry, *tce_entryp;
1928 u64 local_alloc_top, local_alloc_bottom;
1929 u64 i;
1930
1931 if (prom_iommu_off)
1932 return;
1933
1934 prom_debug("starting prom_initialize_tce_table\n");
1935
1936
1937 local_alloc_top = alloc_top_high;
1938 local_alloc_bottom = local_alloc_top;
1939
1940
1941 for (node = 0; prom_next_node(&node); ) {
1942 compatible[0] = 0;
1943 type[0] = 0;
1944 model[0] = 0;
1945 prom_getprop(node, "compatible",
1946 compatible, sizeof(compatible));
1947 prom_getprop(node, "device_type", type, sizeof(type));
1948 prom_getprop(node, "model", model, sizeof(model));
1949
1950 if ((type[0] == 0) || (prom_strstr(type, "pci") == NULL))
1951 continue;
1952
1953
1954 if (compatible[0] != 0) {
1955 if ((prom_strstr(compatible, "python") == NULL) &&
1956 (prom_strstr(compatible, "Speedwagon") == NULL) &&
1957 (prom_strstr(compatible, "Winnipeg") == NULL))
1958 continue;
1959 } else if (model[0] != 0) {
1960 if ((prom_strstr(model, "ython") == NULL) &&
1961 (prom_strstr(model, "peedwagon") == NULL) &&
1962 (prom_strstr(model, "innipeg") == NULL))
1963 continue;
1964 }
1965
1966 if (prom_getprop(node, "tce-table-minalign", &minalign,
1967 sizeof(minalign)) == PROM_ERROR)
1968 minalign = 0;
1969 if (prom_getprop(node, "tce-table-minsize", &minsize,
1970 sizeof(minsize)) == PROM_ERROR)
1971 minsize = 4UL << 20;
1972
1973
1974
1975
1976
1977
1978
1979 minsize = 4UL << 20;
1980
1981
1982 align = max(minalign, minsize);
1983 base = alloc_down(minsize, align, 1);
1984 if (base == 0)
1985 prom_panic("ERROR, cannot find space for TCE table.\n");
1986 if (base < local_alloc_bottom)
1987 local_alloc_bottom = base;
1988
1989
1990 memset(path, 0, sizeof(prom_scratch));
1991
1992 if (call_prom("package-to-path", 3, 1, node,
1993 path, sizeof(prom_scratch) - 1) == PROM_ERROR) {
1994 prom_printf("package-to-path failed\n");
1995 }
1996
1997
1998 prom_setprop(node, path, "linux,tce-base", &base, sizeof(base));
1999 prom_setprop(node, path, "linux,tce-size", &minsize, sizeof(minsize));
2000
2001 prom_debug("TCE table: %s\n", path);
2002 prom_debug("\tnode = 0x%x\n", node);
2003 prom_debug("\tbase = 0x%llx\n", base);
2004 prom_debug("\tsize = 0x%x\n", minsize);
2005
2006
2007
2008
2009 tce_entryp = (u64 *)base;
2010 for (i = 0; i < (minsize >> 3) ;tce_entryp++, i++) {
2011 tce_entry = (i << PAGE_SHIFT);
2012 tce_entry |= 0x3;
2013 *tce_entryp = tce_entry;
2014 }
2015
2016 prom_printf("opening PHB %s", path);
2017 phb_node = call_prom("open", 1, 1, path);
2018 if (phb_node == 0)
2019 prom_printf("... failed\n");
2020 else
2021 prom_printf("... done\n");
2022
2023 call_prom("call-method", 6, 0, ADDR("set-64-bit-addressing"),
2024 phb_node, -1, minsize,
2025 (u32) base, (u32) (base >> 32));
2026 call_prom("close", 1, 0, phb_node);
2027 }
2028
2029 reserve_mem(local_alloc_bottom, local_alloc_top - local_alloc_bottom);
2030
2031
2032
2033 prom_tce_alloc_start = local_alloc_bottom;
2034 prom_tce_alloc_end = local_alloc_top;
2035
2036
2037 prom_debug("ending prom_initialize_tce_table\n");
2038 }
2039 #endif
2040 #endif
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064 #define LOW_ADDR(x) (((unsigned long) &(x)) & 0xff)
2065
2066 static void __init prom_hold_cpus(void)
2067 {
2068 unsigned long i;
2069 phandle node;
2070 char type[64];
2071 unsigned long *spinloop
2072 = (void *) LOW_ADDR(__secondary_hold_spinloop);
2073 unsigned long *acknowledge
2074 = (void *) LOW_ADDR(__secondary_hold_acknowledge);
2075 unsigned long secondary_hold = LOW_ADDR(__secondary_hold);
2076
2077
2078
2079
2080
2081
2082 if ((of_platform == PLATFORM_PSERIES ||
2083 of_platform == PLATFORM_PSERIES_LPAR) &&
2084 rtas_has_query_cpu_stopped) {
2085 prom_printf("prom_hold_cpus: skipped\n");
2086 return;
2087 }
2088
2089 prom_debug("prom_hold_cpus: start...\n");
2090 prom_debug(" 1) spinloop = 0x%lx\n", (unsigned long)spinloop);
2091 prom_debug(" 1) *spinloop = 0x%lx\n", *spinloop);
2092 prom_debug(" 1) acknowledge = 0x%lx\n",
2093 (unsigned long)acknowledge);
2094 prom_debug(" 1) *acknowledge = 0x%lx\n", *acknowledge);
2095 prom_debug(" 1) secondary_hold = 0x%lx\n", secondary_hold);
2096
2097
2098
2099
2100
2101
2102 *spinloop = 0;
2103
2104
2105 for (node = 0; prom_next_node(&node); ) {
2106 unsigned int cpu_no;
2107 __be32 reg;
2108
2109 type[0] = 0;
2110 prom_getprop(node, "device_type", type, sizeof(type));
2111 if (prom_strcmp(type, "cpu") != 0)
2112 continue;
2113
2114
2115 if (prom_getprop(node, "status", type, sizeof(type)) > 0)
2116 if (prom_strcmp(type, "okay") != 0)
2117 continue;
2118
2119 reg = cpu_to_be32(-1);
2120 prom_getprop(node, "reg", ®, sizeof(reg));
2121 cpu_no = be32_to_cpu(reg);
2122
2123 prom_debug("cpu hw idx = %u\n", cpu_no);
2124
2125
2126
2127
2128
2129 *acknowledge = (unsigned long)-1;
2130
2131 if (cpu_no != prom.cpu) {
2132
2133 prom_printf("starting cpu hw idx %u... ", cpu_no);
2134 call_prom("start-cpu", 3, 0, node,
2135 secondary_hold, cpu_no);
2136
2137 for (i = 0; (i < 100000000) &&
2138 (*acknowledge == ((unsigned long)-1)); i++ )
2139 mb();
2140
2141 if (*acknowledge == cpu_no)
2142 prom_printf("done\n");
2143 else
2144 prom_printf("failed: %lx\n", *acknowledge);
2145 }
2146 #ifdef CONFIG_SMP
2147 else
2148 prom_printf("boot cpu hw idx %u\n", cpu_no);
2149 #endif
2150 }
2151
2152 prom_debug("prom_hold_cpus: end...\n");
2153 }
2154
2155
2156 static void __init prom_init_client_services(unsigned long pp)
2157 {
2158
2159 prom_entry = pp;
2160
2161
2162 prom.chosen = call_prom("finddevice", 1, 1, ADDR("/chosen"));
2163 if (!PHANDLE_VALID(prom.chosen))
2164 prom_panic("cannot find chosen");
2165
2166
2167 prom.root = call_prom("finddevice", 1, 1, ADDR("/"));
2168 if (!PHANDLE_VALID(prom.root))
2169 prom_panic("cannot find device tree root");
2170
2171 prom.mmumap = 0;
2172 }
2173
2174 #ifdef CONFIG_PPC32
2175
2176
2177
2178
2179
2180 static void __init prom_find_mmu(void)
2181 {
2182 phandle oprom;
2183 char version[64];
2184
2185 oprom = call_prom("finddevice", 1, 1, ADDR("/openprom"));
2186 if (!PHANDLE_VALID(oprom))
2187 return;
2188 if (prom_getprop(oprom, "model", version, sizeof(version)) <= 0)
2189 return;
2190 version[sizeof(version) - 1] = 0;
2191
2192 if (prom_strcmp(version, "Open Firmware, 1.0.5") == 0)
2193 of_workarounds = OF_WA_CLAIM;
2194 else if (prom_strncmp(version, "FirmWorks,3.", 12) == 0) {
2195 of_workarounds = OF_WA_CLAIM | OF_WA_LONGTRAIL;
2196 call_prom("interpret", 1, 1, "dev /memory 0 to allow-reclaim");
2197 } else
2198 return;
2199 prom.memory = call_prom("open", 1, 1, ADDR("/memory"));
2200 prom_getprop(prom.chosen, "mmu", &prom.mmumap,
2201 sizeof(prom.mmumap));
2202 prom.mmumap = be32_to_cpu(prom.mmumap);
2203 if (!IHANDLE_VALID(prom.memory) || !IHANDLE_VALID(prom.mmumap))
2204 of_workarounds &= ~OF_WA_CLAIM;
2205 }
2206 #else
2207 #define prom_find_mmu()
2208 #endif
2209
2210 static void __init prom_init_stdout(void)
2211 {
2212 char *path = of_stdout_device;
2213 char type[16];
2214 phandle stdout_node;
2215 __be32 val;
2216
2217 if (prom_getprop(prom.chosen, "stdout", &val, sizeof(val)) <= 0)
2218 prom_panic("cannot find stdout");
2219
2220 prom.stdout = be32_to_cpu(val);
2221
2222
2223 memset(path, 0, 256);
2224 call_prom("instance-to-path", 3, 1, prom.stdout, path, 255);
2225 prom_printf("OF stdout device is: %s\n", of_stdout_device);
2226 prom_setprop(prom.chosen, "/chosen", "linux,stdout-path",
2227 path, prom_strlen(path) + 1);
2228
2229
2230 stdout_node = call_prom("instance-to-package", 1, 1, prom.stdout);
2231 if (stdout_node != PROM_ERROR) {
2232 val = cpu_to_be32(stdout_node);
2233
2234
2235 memset(type, 0, sizeof(type));
2236 prom_getprop(stdout_node, "device_type", type, sizeof(type));
2237 if (prom_strcmp(type, "display") == 0)
2238 prom_setprop(stdout_node, path, "linux,boot-display", NULL, 0);
2239 }
2240 }
2241
2242 static int __init prom_find_machine_type(void)
2243 {
2244 char compat[256];
2245 int len, i = 0;
2246 #ifdef CONFIG_PPC64
2247 phandle rtas;
2248 int x;
2249 #endif
2250
2251
2252 len = prom_getprop(prom.root, "compatible",
2253 compat, sizeof(compat)-1);
2254 if (len > 0) {
2255 compat[len] = 0;
2256 while (i < len) {
2257 char *p = &compat[i];
2258 int sl = prom_strlen(p);
2259 if (sl == 0)
2260 break;
2261 if (prom_strstr(p, "Power Macintosh") ||
2262 prom_strstr(p, "MacRISC"))
2263 return PLATFORM_POWERMAC;
2264 #ifdef CONFIG_PPC64
2265
2266
2267
2268
2269 if (prom_strstr(p, "IBM,CBEA") ||
2270 prom_strstr(p, "IBM,CPBW-1.0"))
2271 return PLATFORM_GENERIC;
2272 #endif
2273 i += sl + 1;
2274 }
2275 }
2276 #ifdef CONFIG_PPC64
2277
2278
2279
2280
2281
2282
2283 len = prom_getprop(prom.root, "device_type",
2284 compat, sizeof(compat)-1);
2285 if (len <= 0)
2286 return PLATFORM_GENERIC;
2287 if (prom_strcmp(compat, "chrp"))
2288 return PLATFORM_GENERIC;
2289
2290
2291 rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
2292 if (!PHANDLE_VALID(rtas))
2293 return PLATFORM_GENERIC;
2294 x = prom_getproplen(rtas, "ibm,hypertas-functions");
2295 if (x != PROM_ERROR) {
2296 prom_debug("Hypertas detected, assuming LPAR !\n");
2297 return PLATFORM_PSERIES_LPAR;
2298 }
2299 return PLATFORM_PSERIES;
2300 #else
2301 return PLATFORM_GENERIC;
2302 #endif
2303 }
2304
2305 static int __init prom_set_color(ihandle ih, int i, int r, int g, int b)
2306 {
2307 return call_prom("call-method", 6, 1, ADDR("color!"), ih, i, b, g, r);
2308 }
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318 static void __init prom_check_displays(void)
2319 {
2320 char type[16], *path;
2321 phandle node;
2322 ihandle ih;
2323 int i;
2324
2325 static const unsigned char default_colors[] __initconst = {
2326 0x00, 0x00, 0x00,
2327 0x00, 0x00, 0xaa,
2328 0x00, 0xaa, 0x00,
2329 0x00, 0xaa, 0xaa,
2330 0xaa, 0x00, 0x00,
2331 0xaa, 0x00, 0xaa,
2332 0xaa, 0xaa, 0x00,
2333 0xaa, 0xaa, 0xaa,
2334 0x55, 0x55, 0x55,
2335 0x55, 0x55, 0xff,
2336 0x55, 0xff, 0x55,
2337 0x55, 0xff, 0xff,
2338 0xff, 0x55, 0x55,
2339 0xff, 0x55, 0xff,
2340 0xff, 0xff, 0x55,
2341 0xff, 0xff, 0xff
2342 };
2343 const unsigned char *clut;
2344
2345 prom_debug("Looking for displays\n");
2346 for (node = 0; prom_next_node(&node); ) {
2347 memset(type, 0, sizeof(type));
2348 prom_getprop(node, "device_type", type, sizeof(type));
2349 if (prom_strcmp(type, "display") != 0)
2350 continue;
2351
2352
2353 path = prom_scratch;
2354 memset(path, 0, sizeof(prom_scratch));
2355
2356
2357
2358
2359
2360 if (call_prom("package-to-path", 3, 1, node, path,
2361 sizeof(prom_scratch) - 10) == PROM_ERROR)
2362 continue;
2363 prom_printf("found display : %s, opening... ", path);
2364
2365 ih = call_prom("open", 1, 1, path);
2366 if (ih == 0) {
2367 prom_printf("failed\n");
2368 continue;
2369 }
2370
2371
2372 prom_printf("done\n");
2373 prom_setprop(node, path, "linux,opened", NULL, 0);
2374
2375
2376
2377 clut = default_colors;
2378 for (i = 0; i < 16; i++, clut += 3)
2379 if (prom_set_color(ih, i, clut[0], clut[1],
2380 clut[2]) != 0)
2381 break;
2382
2383 #ifdef CONFIG_LOGO_LINUX_CLUT224
2384 clut = PTRRELOC(logo_linux_clut224.clut);
2385 for (i = 0; i < logo_linux_clut224.clutsize; i++, clut += 3)
2386 if (prom_set_color(ih, i + 32, clut[0], clut[1],
2387 clut[2]) != 0)
2388 break;
2389 #endif
2390
2391 #ifdef CONFIG_PPC_EARLY_DEBUG_BOOTX
2392 if (prom_getprop(node, "linux,boot-display", NULL, 0) !=
2393 PROM_ERROR) {
2394 u32 width, height, pitch, addr;
2395
2396 prom_printf("Setting btext !\n");
2397 prom_getprop(node, "width", &width, 4);
2398 prom_getprop(node, "height", &height, 4);
2399 prom_getprop(node, "linebytes", &pitch, 4);
2400 prom_getprop(node, "address", &addr, 4);
2401 prom_printf("W=%d H=%d LB=%d addr=0x%x\n",
2402 width, height, pitch, addr);
2403 btext_setup_display(width, height, 8, pitch, addr);
2404 btext_prepare_BAT();
2405 }
2406 #endif
2407 }
2408 }
2409
2410
2411
2412 static void __init *make_room(unsigned long *mem_start, unsigned long *mem_end,
2413 unsigned long needed, unsigned long align)
2414 {
2415 void *ret;
2416
2417 *mem_start = _ALIGN(*mem_start, align);
2418 while ((*mem_start + needed) > *mem_end) {
2419 unsigned long room, chunk;
2420
2421 prom_debug("Chunk exhausted, claiming more at %lx...\n",
2422 alloc_bottom);
2423 room = alloc_top - alloc_bottom;
2424 if (room > DEVTREE_CHUNK_SIZE)
2425 room = DEVTREE_CHUNK_SIZE;
2426 if (room < PAGE_SIZE)
2427 prom_panic("No memory for flatten_device_tree "
2428 "(no room)\n");
2429 chunk = alloc_up(room, 0);
2430 if (chunk == 0)
2431 prom_panic("No memory for flatten_device_tree "
2432 "(claim failed)\n");
2433 *mem_end = chunk + room;
2434 }
2435
2436 ret = (void *)*mem_start;
2437 *mem_start += needed;
2438
2439 return ret;
2440 }
2441
2442 #define dt_push_token(token, mem_start, mem_end) do { \
2443 void *room = make_room(mem_start, mem_end, 4, 4); \
2444 *(__be32 *)room = cpu_to_be32(token); \
2445 } while(0)
2446
2447 static unsigned long __init dt_find_string(char *str)
2448 {
2449 char *s, *os;
2450
2451 s = os = (char *)dt_string_start;
2452 s += 4;
2453 while (s < (char *)dt_string_end) {
2454 if (prom_strcmp(s, str) == 0)
2455 return s - os;
2456 s += prom_strlen(s) + 1;
2457 }
2458 return 0;
2459 }
2460
2461
2462
2463
2464
2465 #define MAX_PROPERTY_NAME 64
2466
2467 static void __init scan_dt_build_strings(phandle node,
2468 unsigned long *mem_start,
2469 unsigned long *mem_end)
2470 {
2471 char *prev_name, *namep, *sstart;
2472 unsigned long soff;
2473 phandle child;
2474
2475 sstart = (char *)dt_string_start;
2476
2477
2478 prev_name = "";
2479 for (;;) {
2480
2481 namep = make_room(mem_start, mem_end, MAX_PROPERTY_NAME, 1);
2482 if (call_prom("nextprop", 3, 1, node, prev_name, namep) != 1) {
2483
2484 *mem_start = (unsigned long)namep;
2485 break;
2486 }
2487
2488
2489 if (prom_strcmp(namep, "name") == 0) {
2490 *mem_start = (unsigned long)namep;
2491 prev_name = "name";
2492 continue;
2493 }
2494
2495 soff = dt_find_string(namep);
2496 if (soff != 0) {
2497 *mem_start = (unsigned long)namep;
2498 namep = sstart + soff;
2499 } else {
2500
2501 *mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
2502 dt_string_end = *mem_start;
2503 }
2504 prev_name = namep;
2505 }
2506
2507
2508 child = call_prom("child", 1, 1, node);
2509 while (child != 0) {
2510 scan_dt_build_strings(child, mem_start, mem_end);
2511 child = call_prom("peer", 1, 1, child);
2512 }
2513 }
2514
2515 static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
2516 unsigned long *mem_end)
2517 {
2518 phandle child;
2519 char *namep, *prev_name, *sstart, *p, *ep, *lp, *path;
2520 unsigned long soff;
2521 unsigned char *valp;
2522 static char pname[MAX_PROPERTY_NAME] __prombss;
2523 int l, room, has_phandle = 0;
2524
2525 dt_push_token(OF_DT_BEGIN_NODE, mem_start, mem_end);
2526
2527
2528 namep = (char *)*mem_start;
2529 room = *mem_end - *mem_start;
2530 if (room > 255)
2531 room = 255;
2532 l = call_prom("package-to-path", 3, 1, node, namep, room);
2533 if (l >= 0) {
2534
2535 if (l >= room) {
2536 if (l >= *mem_end - *mem_start)
2537 namep = make_room(mem_start, mem_end, l+1, 1);
2538 call_prom("package-to-path", 3, 1, node, namep, l);
2539 }
2540 namep[l] = '\0';
2541
2542
2543
2544
2545
2546 for (lp = p = namep, ep = namep + l; p < ep; p++) {
2547 if (*p == '/')
2548 lp = namep;
2549 else if (*p != 0)
2550 *lp++ = *p;
2551 }
2552 *lp = 0;
2553 *mem_start = _ALIGN((unsigned long)lp + 1, 4);
2554 }
2555
2556
2557 path = prom_scratch;
2558 memset(path, 0, sizeof(prom_scratch));
2559 call_prom("package-to-path", 3, 1, node, path, sizeof(prom_scratch) - 1);
2560
2561
2562 prev_name = "";
2563 sstart = (char *)dt_string_start;
2564 for (;;) {
2565 if (call_prom("nextprop", 3, 1, node, prev_name,
2566 pname) != 1)
2567 break;
2568
2569
2570 if (prom_strcmp(pname, "name") == 0) {
2571 prev_name = "name";
2572 continue;
2573 }
2574
2575
2576 soff = dt_find_string(pname);
2577 if (soff == 0) {
2578 prom_printf("WARNING: Can't find string index for"
2579 " <%s>, node %s\n", pname, path);
2580 break;
2581 }
2582 prev_name = sstart + soff;
2583
2584
2585 l = call_prom("getproplen", 2, 1, node, pname);
2586
2587
2588 if (l == PROM_ERROR)
2589 continue;
2590
2591
2592 dt_push_token(OF_DT_PROP, mem_start, mem_end);
2593 dt_push_token(l, mem_start, mem_end);
2594 dt_push_token(soff, mem_start, mem_end);
2595
2596
2597 valp = make_room(mem_start, mem_end, l, 4);
2598 call_prom("getprop", 4, 1, node, pname, valp, l);
2599 *mem_start = _ALIGN(*mem_start, 4);
2600
2601 if (!prom_strcmp(pname, "phandle"))
2602 has_phandle = 1;
2603 }
2604
2605
2606 if (!has_phandle) {
2607 soff = dt_find_string("phandle");
2608 if (soff == 0)
2609 prom_printf("WARNING: Can't find string index for <phandle> node %s\n", path);
2610 else {
2611 dt_push_token(OF_DT_PROP, mem_start, mem_end);
2612 dt_push_token(4, mem_start, mem_end);
2613 dt_push_token(soff, mem_start, mem_end);
2614 valp = make_room(mem_start, mem_end, 4, 4);
2615 *(__be32 *)valp = cpu_to_be32(node);
2616 }
2617 }
2618
2619
2620 child = call_prom("child", 1, 1, node);
2621 while (child != 0) {
2622 scan_dt_build_struct(child, mem_start, mem_end);
2623 child = call_prom("peer", 1, 1, child);
2624 }
2625
2626 dt_push_token(OF_DT_END_NODE, mem_start, mem_end);
2627 }
2628
2629 static void __init flatten_device_tree(void)
2630 {
2631 phandle root;
2632 unsigned long mem_start, mem_end, room;
2633 struct boot_param_header *hdr;
2634 char *namep;
2635 u64 *rsvmap;
2636
2637
2638
2639
2640
2641 room = alloc_top - alloc_bottom - 0x4000;
2642 if (room > DEVTREE_CHUNK_SIZE)
2643 room = DEVTREE_CHUNK_SIZE;
2644 prom_debug("starting device tree allocs at %lx\n", alloc_bottom);
2645
2646
2647 mem_start = (unsigned long)alloc_up(room, PAGE_SIZE);
2648 if (mem_start == 0)
2649 prom_panic("Can't allocate initial device-tree chunk\n");
2650 mem_end = mem_start + room;
2651
2652
2653 root = call_prom("peer", 1, 1, (phandle)0);
2654 if (root == (phandle)0)
2655 prom_panic ("couldn't get device tree root\n");
2656
2657
2658 mem_start = _ALIGN(mem_start, 4);
2659 hdr = make_room(&mem_start, &mem_end,
2660 sizeof(struct boot_param_header), 4);
2661 dt_header_start = (unsigned long)hdr;
2662 rsvmap = make_room(&mem_start, &mem_end, sizeof(mem_reserve_map), 8);
2663
2664
2665 mem_start = PAGE_ALIGN(mem_start);
2666 dt_string_start = mem_start;
2667 mem_start += 4;
2668
2669
2670 namep = make_room(&mem_start, &mem_end, 16, 1);
2671 prom_strcpy(namep, "phandle");
2672 mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
2673
2674
2675 prom_printf("Building dt strings...\n");
2676 scan_dt_build_strings(root, &mem_start, &mem_end);
2677 dt_string_end = mem_start;
2678
2679
2680 mem_start = PAGE_ALIGN(mem_start);
2681 dt_struct_start = mem_start;
2682 prom_printf("Building dt structure...\n");
2683 scan_dt_build_struct(root, &mem_start, &mem_end);
2684 dt_push_token(OF_DT_END, &mem_start, &mem_end);
2685 dt_struct_end = PAGE_ALIGN(mem_start);
2686
2687
2688 hdr->boot_cpuid_phys = cpu_to_be32(prom.cpu);
2689 hdr->magic = cpu_to_be32(OF_DT_HEADER);
2690 hdr->totalsize = cpu_to_be32(dt_struct_end - dt_header_start);
2691 hdr->off_dt_struct = cpu_to_be32(dt_struct_start - dt_header_start);
2692 hdr->off_dt_strings = cpu_to_be32(dt_string_start - dt_header_start);
2693 hdr->dt_strings_size = cpu_to_be32(dt_string_end - dt_string_start);
2694 hdr->off_mem_rsvmap = cpu_to_be32(((unsigned long)rsvmap) - dt_header_start);
2695 hdr->version = cpu_to_be32(OF_DT_VERSION);
2696
2697 hdr->last_comp_version = cpu_to_be32(0x10);
2698
2699
2700 memcpy(rsvmap, mem_reserve_map, sizeof(mem_reserve_map));
2701
2702 #ifdef DEBUG_PROM
2703 {
2704 int i;
2705 prom_printf("reserved memory map:\n");
2706 for (i = 0; i < mem_reserve_cnt; i++)
2707 prom_printf(" %llx - %llx\n",
2708 be64_to_cpu(mem_reserve_map[i].base),
2709 be64_to_cpu(mem_reserve_map[i].size));
2710 }
2711 #endif
2712
2713
2714
2715 mem_reserve_cnt = MEM_RESERVE_MAP_SIZE;
2716
2717 prom_printf("Device tree strings 0x%lx -> 0x%lx\n",
2718 dt_string_start, dt_string_end);
2719 prom_printf("Device tree struct 0x%lx -> 0x%lx\n",
2720 dt_struct_start, dt_struct_end);
2721 }
2722
2723 #ifdef CONFIG_PPC_MAPLE
2724
2725
2726 static void __init fixup_device_tree_maple(void)
2727 {
2728 phandle isa;
2729 u32 rloc = 0x01002000;
2730 u32 isa_ranges[6];
2731 char *name;
2732
2733 name = "/ht@0/isa@4";
2734 isa = call_prom("finddevice", 1, 1, ADDR(name));
2735 if (!PHANDLE_VALID(isa)) {
2736 name = "/ht@0/isa@6";
2737 isa = call_prom("finddevice", 1, 1, ADDR(name));
2738 rloc = 0x01003000;
2739 }
2740 if (!PHANDLE_VALID(isa))
2741 return;
2742
2743 if (prom_getproplen(isa, "ranges") != 12)
2744 return;
2745 if (prom_getprop(isa, "ranges", isa_ranges, sizeof(isa_ranges))
2746 == PROM_ERROR)
2747 return;
2748
2749 if (isa_ranges[0] != 0x1 ||
2750 isa_ranges[1] != 0xf4000000 ||
2751 isa_ranges[2] != 0x00010000)
2752 return;
2753
2754 prom_printf("Fixing up bogus ISA range on Maple/Apache...\n");
2755
2756 isa_ranges[0] = 0x1;
2757 isa_ranges[1] = 0x0;
2758 isa_ranges[2] = rloc;
2759 isa_ranges[3] = 0x0;
2760 isa_ranges[4] = 0x0;
2761 isa_ranges[5] = 0x00010000;
2762 prom_setprop(isa, name, "ranges",
2763 isa_ranges, sizeof(isa_ranges));
2764 }
2765
2766 #define CPC925_MC_START 0xf8000000
2767 #define CPC925_MC_LENGTH 0x1000000
2768
2769 static void __init fixup_device_tree_maple_memory_controller(void)
2770 {
2771 phandle mc;
2772 u32 mc_reg[4];
2773 char *name = "/hostbridge@f8000000";
2774 u32 ac, sc;
2775
2776 mc = call_prom("finddevice", 1, 1, ADDR(name));
2777 if (!PHANDLE_VALID(mc))
2778 return;
2779
2780 if (prom_getproplen(mc, "reg") != 8)
2781 return;
2782
2783 prom_getprop(prom.root, "#address-cells", &ac, sizeof(ac));
2784 prom_getprop(prom.root, "#size-cells", &sc, sizeof(sc));
2785 if ((ac != 2) || (sc != 2))
2786 return;
2787
2788 if (prom_getprop(mc, "reg", mc_reg, sizeof(mc_reg)) == PROM_ERROR)
2789 return;
2790
2791 if (mc_reg[0] != CPC925_MC_START || mc_reg[1] != CPC925_MC_LENGTH)
2792 return;
2793
2794 prom_printf("Fixing up bogus hostbridge on Maple...\n");
2795
2796 mc_reg[0] = 0x0;
2797 mc_reg[1] = CPC925_MC_START;
2798 mc_reg[2] = 0x0;
2799 mc_reg[3] = CPC925_MC_LENGTH;
2800 prom_setprop(mc, name, "reg", mc_reg, sizeof(mc_reg));
2801 }
2802 #else
2803 #define fixup_device_tree_maple()
2804 #define fixup_device_tree_maple_memory_controller()
2805 #endif
2806
2807 #ifdef CONFIG_PPC_CHRP
2808
2809
2810
2811
2812
2813 static void __init fixup_device_tree_chrp(void)
2814 {
2815 phandle ph;
2816 u32 prop[6];
2817 u32 rloc = 0x01006000;
2818 char *name;
2819 int rc;
2820
2821 name = "/pci@80000000/isa@c";
2822 ph = call_prom("finddevice", 1, 1, ADDR(name));
2823 if (!PHANDLE_VALID(ph)) {
2824 name = "/pci@ff500000/isa@6";
2825 ph = call_prom("finddevice", 1, 1, ADDR(name));
2826 rloc = 0x01003000;
2827 }
2828 if (PHANDLE_VALID(ph)) {
2829 rc = prom_getproplen(ph, "ranges");
2830 if (rc == 0 || rc == PROM_ERROR) {
2831 prom_printf("Fixing up missing ISA range on Pegasos...\n");
2832
2833 prop[0] = 0x1;
2834 prop[1] = 0x0;
2835 prop[2] = rloc;
2836 prop[3] = 0x0;
2837 prop[4] = 0x0;
2838 prop[5] = 0x00010000;
2839 prom_setprop(ph, name, "ranges", prop, sizeof(prop));
2840 }
2841 }
2842
2843 name = "/pci@80000000/ide@C,1";
2844 ph = call_prom("finddevice", 1, 1, ADDR(name));
2845 if (PHANDLE_VALID(ph)) {
2846 prom_printf("Fixing up IDE interrupt on Pegasos...\n");
2847 prop[0] = 14;
2848 prop[1] = 0x0;
2849 prom_setprop(ph, name, "interrupts", prop, 2*sizeof(u32));
2850 prom_printf("Fixing up IDE class-code on Pegasos...\n");
2851 rc = prom_getprop(ph, "class-code", prop, sizeof(u32));
2852 if (rc == sizeof(u32)) {
2853 prop[0] &= ~0x5;
2854 prom_setprop(ph, name, "class-code", prop, sizeof(u32));
2855 }
2856 }
2857 }
2858 #else
2859 #define fixup_device_tree_chrp()
2860 #endif
2861
2862 #if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC)
2863 static void __init fixup_device_tree_pmac(void)
2864 {
2865 phandle u3, i2c, mpic;
2866 u32 u3_rev;
2867 u32 interrupts[2];
2868 u32 parent;
2869
2870
2871 u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000"));
2872 if (!PHANDLE_VALID(u3))
2873 return;
2874 i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000"));
2875 if (!PHANDLE_VALID(i2c))
2876 return;
2877 mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000"));
2878 if (!PHANDLE_VALID(mpic))
2879 return;
2880
2881
2882 if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev))
2883 == PROM_ERROR)
2884 return;
2885 if (u3_rev < 0x35 || u3_rev > 0x39)
2886 return;
2887
2888 if (prom_getproplen(i2c, "interrupts") > 0)
2889 return;
2890
2891 prom_printf("fixing up bogus interrupts for u3 i2c...\n");
2892
2893
2894 interrupts[0] = 0;
2895 interrupts[1] = 1;
2896 prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupts",
2897 &interrupts, sizeof(interrupts));
2898 parent = (u32)mpic;
2899 prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupt-parent",
2900 &parent, sizeof(parent));
2901 }
2902 #else
2903 #define fixup_device_tree_pmac()
2904 #endif
2905
2906 #ifdef CONFIG_PPC_EFIKA
2907
2908
2909
2910
2911
2912
2913 static void __init fixup_device_tree_efika_add_phy(void)
2914 {
2915 u32 node;
2916 char prop[64];
2917 int rv;
2918
2919
2920 node = call_prom("finddevice", 1, 1, ADDR("/builtin/ethernet"));
2921 if (!PHANDLE_VALID(node))
2922 return;
2923
2924
2925 rv = prom_getprop(node, "phy-handle", prop, sizeof(prop));
2926 if (!rv)
2927 return;
2928
2929
2930
2931
2932
2933
2934
2935 node = call_prom("finddevice", 1, 1, ADDR("/builtin/mdio"));
2936 if (!PHANDLE_VALID(node)) {
2937 prom_printf("Adding Ethernet MDIO node\n");
2938 call_prom("interpret", 1, 1,
2939 " s\" /builtin\" find-device"
2940 " new-device"
2941 " 1 encode-int s\" #address-cells\" property"
2942 " 0 encode-int s\" #size-cells\" property"
2943 " s\" mdio\" device-name"
2944 " s\" fsl,mpc5200b-mdio\" encode-string"
2945 " s\" compatible\" property"
2946 " 0xf0003000 0x400 reg"
2947 " 0x2 encode-int"
2948 " 0x5 encode-int encode+"
2949 " 0x3 encode-int encode+"
2950 " s\" interrupts\" property"
2951 " finish-device");
2952 };
2953
2954
2955
2956 node = call_prom("finddevice", 1, 1,
2957 ADDR("/builtin/mdio/ethernet-phy"));
2958 if (!PHANDLE_VALID(node)) {
2959 prom_printf("Adding Ethernet PHY node\n");
2960 call_prom("interpret", 1, 1,
2961 " s\" /builtin/mdio\" find-device"
2962 " new-device"
2963 " s\" ethernet-phy\" device-name"
2964 " 0x10 encode-int s\" reg\" property"
2965 " my-self"
2966 " ihandle>phandle"
2967 " finish-device"
2968 " s\" /builtin/ethernet\" find-device"
2969 " encode-int"
2970 " s\" phy-handle\" property"
2971 " device-end");
2972 }
2973 }
2974
2975 static void __init fixup_device_tree_efika(void)
2976 {
2977 int sound_irq[3] = { 2, 2, 0 };
2978 int bcomm_irq[3*16] = { 3,0,0, 3,1,0, 3,2,0, 3,3,0,
2979 3,4,0, 3,5,0, 3,6,0, 3,7,0,
2980 3,8,0, 3,9,0, 3,10,0, 3,11,0,
2981 3,12,0, 3,13,0, 3,14,0, 3,15,0 };
2982 u32 node;
2983 char prop[64];
2984 int rv, len;
2985
2986
2987 node = call_prom("finddevice", 1, 1, ADDR("/"));
2988 if (!PHANDLE_VALID(node))
2989 return;
2990
2991 rv = prom_getprop(node, "model", prop, sizeof(prop));
2992 if (rv == PROM_ERROR)
2993 return;
2994 if (prom_strcmp(prop, "EFIKA5K2"))
2995 return;
2996
2997 prom_printf("Applying EFIKA device tree fixups\n");
2998
2999
3000 node = call_prom("finddevice", 1, 1, ADDR("/"));
3001 rv = prom_getprop(node, "device_type", prop, sizeof(prop));
3002 if (rv != PROM_ERROR && (prom_strcmp(prop, "chrp") == 0))
3003 prom_setprop(node, "/", "device_type", "efika", sizeof("efika"));
3004
3005
3006
3007 rv = prom_getprop(node, "CODEGEN,description", prop, sizeof(prop));
3008 if (rv != PROM_ERROR && (prom_strstr(prop, "CHRP")))
3009 prom_setprop(node, "/", "CODEGEN,description",
3010 "Efika 5200B PowerPC System",
3011 sizeof("Efika 5200B PowerPC System"));
3012
3013
3014 node = call_prom("finddevice", 1, 1, ADDR("/builtin/bestcomm"));
3015 if (PHANDLE_VALID(node)) {
3016 len = prom_getproplen(node, "interrupts");
3017 if (len == 12) {
3018 prom_printf("Fixing bestcomm interrupts property\n");
3019 prom_setprop(node, "/builtin/bestcom", "interrupts",
3020 bcomm_irq, sizeof(bcomm_irq));
3021 }
3022 }
3023
3024
3025 node = call_prom("finddevice", 1, 1, ADDR("/builtin/sound"));
3026 if (PHANDLE_VALID(node)) {
3027 rv = prom_getprop(node, "interrupts", prop, sizeof(prop));
3028 if (rv == PROM_ERROR) {
3029 prom_printf("Adding sound interrupts property\n");
3030 prom_setprop(node, "/builtin/sound", "interrupts",
3031 sound_irq, sizeof(sound_irq));
3032 }
3033 }
3034
3035
3036 fixup_device_tree_efika_add_phy();
3037 }
3038 #else
3039 #define fixup_device_tree_efika()
3040 #endif
3041
3042 #ifdef CONFIG_PPC_PASEMI_NEMO
3043
3044
3045
3046
3047
3048
3049 static void __init fixup_device_tree_pasemi(void)
3050 {
3051 u32 interrupts[2], parent, rval, val = 0;
3052 char *name, *pci_name;
3053 phandle iob, node;
3054
3055
3056 name = "/pxp@0,e0000000";
3057 iob = call_prom("finddevice", 1, 1, ADDR(name));
3058 if (!PHANDLE_VALID(iob))
3059 return;
3060
3061
3062 if (prom_getproplen(iob, "interrupt-controller") !=PROM_ERROR)
3063 return;
3064
3065 prom_printf("adding interrupt-controller property for SB600...\n");
3066
3067 prom_setprop(iob, name, "interrupt-controller", &val, 0);
3068
3069 pci_name = "/pxp@0,e0000000/pci@11";
3070 node = call_prom("finddevice", 1, 1, ADDR(pci_name));
3071 parent = ADDR(iob);
3072
3073 for( ; prom_next_node(&node); ) {
3074
3075 if (!PHANDLE_VALID(node))
3076 continue;
3077
3078 rval = prom_getproplen(node, "interrupts");
3079 if (rval == 0 || rval == PROM_ERROR)
3080 continue;
3081
3082 prom_getprop(node, "interrupts", &interrupts, sizeof(interrupts));
3083 if ((interrupts[0] < 212) || (interrupts[0] > 222))
3084 continue;
3085
3086
3087 if ((interrupts[0] >= 212) && (interrupts[0] <= 215))
3088 interrupts[0] -= 203;
3089 if ((interrupts[0] >= 216) && (interrupts[0] <= 220))
3090 interrupts[0] -= 213;
3091 if (interrupts[0] == 221)
3092 interrupts[0] = 14;
3093 if (interrupts[0] == 222)
3094 interrupts[0] = 8;
3095
3096 prom_setprop(node, pci_name, "interrupts", interrupts,
3097 sizeof(interrupts));
3098 prom_setprop(node, pci_name, "interrupt-parent", &parent,
3099 sizeof(parent));
3100 }
3101
3102
3103
3104
3105
3106
3107 name = "/pxp@0,e0000000/io-bridge@0";
3108 iob = call_prom("finddevice", 1, 1, ADDR(name));
3109 if (!PHANDLE_VALID(iob))
3110 return;
3111
3112
3113
3114 prom_printf("Changing device_type of SB600 node...\n");
3115
3116 prom_setprop(iob, name, "device_type", "isa", sizeof("isa"));
3117 }
3118 #else
3119 static inline void fixup_device_tree_pasemi(void) { }
3120 #endif
3121
3122 static void __init fixup_device_tree(void)
3123 {
3124 fixup_device_tree_maple();
3125 fixup_device_tree_maple_memory_controller();
3126 fixup_device_tree_chrp();
3127 fixup_device_tree_pmac();
3128 fixup_device_tree_efika();
3129 fixup_device_tree_pasemi();
3130 }
3131
3132 static void __init prom_find_boot_cpu(void)
3133 {
3134 __be32 rval;
3135 ihandle prom_cpu;
3136 phandle cpu_pkg;
3137
3138 rval = 0;
3139 if (prom_getprop(prom.chosen, "cpu", &rval, sizeof(rval)) <= 0)
3140 return;
3141 prom_cpu = be32_to_cpu(rval);
3142
3143 cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu);
3144
3145 if (!PHANDLE_VALID(cpu_pkg))
3146 return;
3147
3148 prom_getprop(cpu_pkg, "reg", &rval, sizeof(rval));
3149 prom.cpu = be32_to_cpu(rval);
3150
3151 prom_debug("Booting CPU hw index = %d\n", prom.cpu);
3152 }
3153
3154 static void __init prom_check_initrd(unsigned long r3, unsigned long r4)
3155 {
3156 #ifdef CONFIG_BLK_DEV_INITRD
3157 if (r3 && r4 && r4 != 0xdeadbeef) {
3158 __be64 val;
3159
3160 prom_initrd_start = is_kernel_addr(r3) ? __pa(r3) : r3;
3161 prom_initrd_end = prom_initrd_start + r4;
3162
3163 val = cpu_to_be64(prom_initrd_start);
3164 prom_setprop(prom.chosen, "/chosen", "linux,initrd-start",
3165 &val, sizeof(val));
3166 val = cpu_to_be64(prom_initrd_end);
3167 prom_setprop(prom.chosen, "/chosen", "linux,initrd-end",
3168 &val, sizeof(val));
3169
3170 reserve_mem(prom_initrd_start,
3171 prom_initrd_end - prom_initrd_start);
3172
3173 prom_debug("initrd_start=0x%lx\n", prom_initrd_start);
3174 prom_debug("initrd_end=0x%lx\n", prom_initrd_end);
3175 }
3176 #endif
3177 }
3178
3179 #ifdef CONFIG_PPC64
3180 #ifdef CONFIG_RELOCATABLE
3181 static void reloc_toc(void)
3182 {
3183 }
3184
3185 static void unreloc_toc(void)
3186 {
3187 }
3188 #else
3189 static void __reloc_toc(unsigned long offset, unsigned long nr_entries)
3190 {
3191 unsigned long i;
3192 unsigned long *toc_entry;
3193
3194
3195 asm volatile("addi %0,2,-0x8000" : "=b" (toc_entry));
3196
3197 for (i = 0; i < nr_entries; i++) {
3198 *toc_entry = *toc_entry + offset;
3199 toc_entry++;
3200 }
3201 }
3202
3203 static void reloc_toc(void)
3204 {
3205 unsigned long offset = reloc_offset();
3206 unsigned long nr_entries =
3207 (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long);
3208
3209 __reloc_toc(offset, nr_entries);
3210
3211 mb();
3212 }
3213
3214 static void unreloc_toc(void)
3215 {
3216 unsigned long offset = reloc_offset();
3217 unsigned long nr_entries =
3218 (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long);
3219
3220 mb();
3221
3222 __reloc_toc(-offset, nr_entries);
3223 }
3224 #endif
3225 #endif
3226
3227 #ifdef CONFIG_PPC_SVM
3228
3229
3230
3231 static int enter_secure_mode(unsigned long kbase, unsigned long fdt)
3232 {
3233 register unsigned long r3 asm("r3") = UV_ESM;
3234 register unsigned long r4 asm("r4") = kbase;
3235 register unsigned long r5 asm("r5") = fdt;
3236
3237 asm volatile("sc 2" : "+r"(r3) : "r"(r4), "r"(r5));
3238
3239 return r3;
3240 }
3241
3242
3243
3244
3245 static void setup_secure_guest(unsigned long kbase, unsigned long fdt)
3246 {
3247 int ret;
3248
3249 if (!prom_svm_enable)
3250 return;
3251
3252
3253 prom_printf("Switching to secure mode.\n");
3254
3255
3256
3257
3258
3259
3260 if (IS_ENABLED(CONFIG_RELOCATABLE))
3261 relocate(KERNELBASE);
3262
3263 ret = enter_secure_mode(kbase, fdt);
3264
3265
3266 if (IS_ENABLED(CONFIG_RELOCATABLE))
3267 relocate(kbase);
3268
3269 if (ret != U_SUCCESS) {
3270 prom_printf("Returned %d from switching to secure mode.\n", ret);
3271 prom_rtas_os_term("Switch to secure mode failed.\n");
3272 }
3273 }
3274 #else
3275 static void setup_secure_guest(unsigned long kbase, unsigned long fdt)
3276 {
3277 }
3278 #endif
3279
3280
3281
3282
3283
3284
3285 unsigned long __init prom_init(unsigned long r3, unsigned long r4,
3286 unsigned long pp,
3287 unsigned long r6, unsigned long r7,
3288 unsigned long kbase)
3289 {
3290 unsigned long hdr;
3291
3292 #ifdef CONFIG_PPC32
3293 unsigned long offset = reloc_offset();
3294 reloc_got2(offset);
3295 #else
3296 reloc_toc();
3297 #endif
3298
3299
3300
3301
3302 memset(&__bss_start, 0, __bss_stop - __bss_start);
3303
3304
3305
3306
3307
3308 prom_init_client_services(pp);
3309
3310
3311
3312
3313
3314 prom_find_mmu();
3315
3316
3317
3318
3319 prom_init_stdout();
3320
3321 prom_printf("Preparing to boot %s", linux_banner);
3322
3323
3324
3325
3326
3327 of_platform = prom_find_machine_type();
3328 prom_printf("Detected machine type: %x\n", of_platform);
3329
3330 #ifndef CONFIG_NONSTATIC_KERNEL
3331
3332 if (PHYSICAL_START > 0)
3333 prom_panic("Error: You can't boot a kdump kernel from OF!\n");
3334 #endif
3335
3336
3337
3338
3339 prom_check_initrd(r3, r4);
3340
3341
3342
3343
3344 early_cmdline_parse();
3345
3346 #ifdef CONFIG_PPC_PSERIES
3347
3348
3349
3350 if (of_platform == PLATFORM_PSERIES ||
3351 of_platform == PLATFORM_PSERIES_LPAR)
3352 prom_send_capabilities();
3353 #endif
3354
3355
3356
3357
3358 if (of_platform != PLATFORM_POWERMAC)
3359 copy_and_flush(0, kbase, 0x100, 0);
3360
3361
3362
3363
3364 prom_init_mem();
3365
3366
3367
3368
3369 prom_find_boot_cpu();
3370
3371
3372
3373
3374 prom_check_displays();
3375
3376 #if defined(CONFIG_PPC64) && defined(__BIG_ENDIAN__)
3377
3378
3379
3380
3381
3382 if (of_platform == PLATFORM_PSERIES)
3383 prom_initialize_tce_table();
3384 #endif
3385
3386
3387
3388
3389
3390 if (of_platform != PLATFORM_POWERMAC)
3391 prom_instantiate_rtas();
3392
3393 #ifdef CONFIG_PPC64
3394
3395 prom_instantiate_sml();
3396 #endif
3397
3398
3399
3400
3401
3402
3403
3404
3405 if (of_platform != PLATFORM_POWERMAC)
3406 prom_hold_cpus();
3407
3408
3409
3410
3411 if (prom_memory_limit) {
3412 __be64 val = cpu_to_be64(prom_memory_limit);
3413 prom_setprop(prom.chosen, "/chosen", "linux,memory-limit",
3414 &val, sizeof(val));
3415 }
3416 #ifdef CONFIG_PPC64
3417 if (prom_iommu_off)
3418 prom_setprop(prom.chosen, "/chosen", "linux,iommu-off",
3419 NULL, 0);
3420
3421 if (prom_iommu_force_on)
3422 prom_setprop(prom.chosen, "/chosen", "linux,iommu-force-on",
3423 NULL, 0);
3424
3425 if (prom_tce_alloc_start) {
3426 prom_setprop(prom.chosen, "/chosen", "linux,tce-alloc-start",
3427 &prom_tce_alloc_start,
3428 sizeof(prom_tce_alloc_start));
3429 prom_setprop(prom.chosen, "/chosen", "linux,tce-alloc-end",
3430 &prom_tce_alloc_end,
3431 sizeof(prom_tce_alloc_end));
3432 }
3433 #endif
3434
3435
3436
3437
3438 fixup_device_tree();
3439
3440
3441
3442
3443 prom_printf("copying OF device tree...\n");
3444 flatten_device_tree();
3445
3446
3447
3448
3449
3450
3451 if (of_platform != PLATFORM_POWERMAC)
3452 prom_close_stdin();
3453
3454
3455
3456
3457
3458 prom_printf("Quiescing Open Firmware ...\n");
3459 call_prom("quiesce", 0, 0);
3460
3461
3462
3463
3464
3465
3466 hdr = dt_header_start;
3467
3468
3469 prom_printf("Booting Linux via __start() @ 0x%lx ...\n", kbase);
3470 prom_debug("->dt_header_start=0x%lx\n", hdr);
3471
3472 #ifdef CONFIG_PPC32
3473 reloc_got2(-offset);
3474 #else
3475 unreloc_toc();
3476 #endif
3477
3478
3479 setup_secure_guest(kbase, hdr);
3480
3481 __start(hdr, kbase, 0, 0, 0, 0, 0);
3482
3483 return 0;
3484 }