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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 <linux/pgtable.h>
30#include <linux/printk.h>
31#include <asm/prom.h>
32#include <asm/rtas.h>
33#include <asm/page.h>
34#include <asm/processor.h>
35#include <asm/interrupt.h>
36#include <asm/irq.h>
37#include <asm/io.h>
38#include <asm/smp.h>
39#include <asm/mmu.h>
40#include <asm/iommu.h>
41#include <asm/btext.h>
42#include <asm/sections.h>
43#include <asm/machdep.h>
44#include <asm/asm-prototypes.h>
45#include <asm/ultravisor-api.h>
46
47#include <linux/linux_logo.h>
48
49
50#define __prombss __section(".bss.prominit")
51
52
53
54
55#define DEVTREE_CHUNK_SIZE 0x100000
56
57
58
59
60
61
62
63
64#define MEM_RESERVE_MAP_SIZE 8
65
66
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81
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83
84
85#define ADDR(x) (u32)(unsigned long)(x)
86
87#ifdef CONFIG_PPC64
88#define OF_WORKAROUNDS 0
89#else
90#define OF_WORKAROUNDS of_workarounds
91static int of_workarounds __prombss;
92#endif
93
94#define OF_WA_CLAIM 1
95#define OF_WA_LONGTRAIL 2
96
97#define PROM_BUG() do { \
98 prom_printf("kernel BUG at %s line 0x%x!\n", \
99 __FILE__, __LINE__); \
100 __builtin_trap(); \
101} while (0)
102
103#ifdef DEBUG_PROM
104#define prom_debug(x...) prom_printf(x)
105#else
106#define prom_debug(x...) do { } while (0)
107#endif
108
109
110typedef u32 prom_arg_t;
111
112struct prom_args {
113 __be32 service;
114 __be32 nargs;
115 __be32 nret;
116 __be32 args[10];
117};
118
119struct prom_t {
120 ihandle root;
121 phandle chosen;
122 int cpu;
123 ihandle stdout;
124 ihandle mmumap;
125 ihandle memory;
126};
127
128struct mem_map_entry {
129 __be64 base;
130 __be64 size;
131};
132
133typedef __be32 cell_t;
134
135extern void __start(unsigned long r3, unsigned long r4, unsigned long r5,
136 unsigned long r6, unsigned long r7, unsigned long r8,
137 unsigned long r9);
138
139#ifdef CONFIG_PPC64
140extern int enter_prom(struct prom_args *args, unsigned long entry);
141#else
142static inline int enter_prom(struct prom_args *args, unsigned long entry)
143{
144 return ((int (*)(struct prom_args *))entry)(args);
145}
146#endif
147
148extern void copy_and_flush(unsigned long dest, unsigned long src,
149 unsigned long size, unsigned long offset);
150
151
152static struct prom_t __prombss prom;
153
154static unsigned long __prombss prom_entry;
155
156static char __prombss of_stdout_device[256];
157static char __prombss prom_scratch[256];
158
159static unsigned long __prombss dt_header_start;
160static unsigned long __prombss dt_struct_start, dt_struct_end;
161static unsigned long __prombss dt_string_start, dt_string_end;
162
163static unsigned long __prombss prom_initrd_start, prom_initrd_end;
164
165#ifdef CONFIG_PPC64
166static int __prombss prom_iommu_force_on;
167static int __prombss prom_iommu_off;
168static unsigned long __prombss prom_tce_alloc_start;
169static unsigned long __prombss prom_tce_alloc_end;
170#endif
171
172#ifdef CONFIG_PPC_PSERIES
173static bool __prombss prom_radix_disable;
174static bool __prombss prom_radix_gtse_disable;
175static bool __prombss prom_xive_disable;
176#endif
177
178#ifdef CONFIG_PPC_SVM
179static bool __prombss prom_svm_enable;
180#endif
181
182struct platform_support {
183 bool hash_mmu;
184 bool radix_mmu;
185 bool radix_gtse;
186 bool xive;
187};
188
189
190
191
192
193#define PLATFORM_PSERIES 0x0100
194#define PLATFORM_PSERIES_LPAR 0x0101
195#define PLATFORM_LPAR 0x0001
196#define PLATFORM_POWERMAC 0x0400
197#define PLATFORM_GENERIC 0x0500
198
199static int __prombss of_platform;
200
201static char __prombss prom_cmd_line[COMMAND_LINE_SIZE];
202
203static unsigned long __prombss prom_memory_limit;
204
205static unsigned long __prombss alloc_top;
206static unsigned long __prombss alloc_top_high;
207static unsigned long __prombss alloc_bottom;
208static unsigned long __prombss rmo_top;
209static unsigned long __prombss ram_top;
210
211static struct mem_map_entry __prombss mem_reserve_map[MEM_RESERVE_MAP_SIZE];
212static int __prombss mem_reserve_cnt;
213
214static cell_t __prombss regbuf[1024];
215
216static bool __prombss rtas_has_query_cpu_stopped;
217
218
219
220
221
222
223
224
225
226#define PROM_ERROR (-1u)
227#define PHANDLE_VALID(p) ((p) != 0 && (p) != PROM_ERROR)
228#define IHANDLE_VALID(i) ((i) != 0 && (i) != PROM_ERROR)
229
230
231
232static int __init prom_strcmp(const char *cs, const char *ct)
233{
234 unsigned char c1, c2;
235
236 while (1) {
237 c1 = *cs++;
238 c2 = *ct++;
239 if (c1 != c2)
240 return c1 < c2 ? -1 : 1;
241 if (!c1)
242 break;
243 }
244 return 0;
245}
246
247static ssize_t __init prom_strscpy_pad(char *dest, const char *src, size_t n)
248{
249 ssize_t rc;
250 size_t i;
251
252 if (n == 0 || n > INT_MAX)
253 return -E2BIG;
254
255
256 for (i = 0; i < n && src[i] != '\0'; i++)
257 dest[i] = src[i];
258
259 rc = i;
260
261
262 if (rc == n) {
263
264 i--;
265 rc = -E2BIG;
266 }
267
268 for (; i < n; i++)
269 dest[i] = '\0';
270
271 return rc;
272}
273
274static int __init prom_strncmp(const char *cs, const char *ct, size_t count)
275{
276 unsigned char c1, c2;
277
278 while (count) {
279 c1 = *cs++;
280 c2 = *ct++;
281 if (c1 != c2)
282 return c1 < c2 ? -1 : 1;
283 if (!c1)
284 break;
285 count--;
286 }
287 return 0;
288}
289
290static size_t __init prom_strlen(const char *s)
291{
292 const char *sc;
293
294 for (sc = s; *sc != '\0'; ++sc)
295 ;
296 return sc - s;
297}
298
299static int __init prom_memcmp(const void *cs, const void *ct, size_t count)
300{
301 const unsigned char *su1, *su2;
302 int res = 0;
303
304 for (su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
305 if ((res = *su1 - *su2) != 0)
306 break;
307 return res;
308}
309
310static char __init *prom_strstr(const char *s1, const char *s2)
311{
312 size_t l1, l2;
313
314 l2 = prom_strlen(s2);
315 if (!l2)
316 return (char *)s1;
317 l1 = prom_strlen(s1);
318 while (l1 >= l2) {
319 l1--;
320 if (!prom_memcmp(s1, s2, l2))
321 return (char *)s1;
322 s1++;
323 }
324 return NULL;
325}
326
327static size_t __init prom_strlcat(char *dest, const char *src, size_t count)
328{
329 size_t dsize = prom_strlen(dest);
330 size_t len = prom_strlen(src);
331 size_t res = dsize + len;
332
333
334 if (dsize >= count)
335 return count;
336
337 dest += dsize;
338 count -= dsize;
339 if (len >= count)
340 len = count-1;
341 memcpy(dest, src, len);
342 dest[len] = 0;
343 return res;
344
345}
346
347#ifdef CONFIG_PPC_PSERIES
348static int __init prom_strtobool(const char *s, bool *res)
349{
350 if (!s)
351 return -EINVAL;
352
353 switch (s[0]) {
354 case 'y':
355 case 'Y':
356 case '1':
357 *res = true;
358 return 0;
359 case 'n':
360 case 'N':
361 case '0':
362 *res = false;
363 return 0;
364 case 'o':
365 case 'O':
366 switch (s[1]) {
367 case 'n':
368 case 'N':
369 *res = true;
370 return 0;
371 case 'f':
372 case 'F':
373 *res = false;
374 return 0;
375 default:
376 break;
377 }
378 break;
379 default:
380 break;
381 }
382
383 return -EINVAL;
384}
385#endif
386
387
388
389
390
391static int __init call_prom(const char *service, int nargs, int nret, ...)
392{
393 int i;
394 struct prom_args args;
395 va_list list;
396
397 args.service = cpu_to_be32(ADDR(service));
398 args.nargs = cpu_to_be32(nargs);
399 args.nret = cpu_to_be32(nret);
400
401 va_start(list, nret);
402 for (i = 0; i < nargs; i++)
403 args.args[i] = cpu_to_be32(va_arg(list, prom_arg_t));
404 va_end(list);
405
406 for (i = 0; i < nret; i++)
407 args.args[nargs+i] = 0;
408
409 if (enter_prom(&args, prom_entry) < 0)
410 return PROM_ERROR;
411
412 return (nret > 0) ? be32_to_cpu(args.args[nargs]) : 0;
413}
414
415static int __init call_prom_ret(const char *service, int nargs, int nret,
416 prom_arg_t *rets, ...)
417{
418 int i;
419 struct prom_args args;
420 va_list list;
421
422 args.service = cpu_to_be32(ADDR(service));
423 args.nargs = cpu_to_be32(nargs);
424 args.nret = cpu_to_be32(nret);
425
426 va_start(list, rets);
427 for (i = 0; i < nargs; i++)
428 args.args[i] = cpu_to_be32(va_arg(list, prom_arg_t));
429 va_end(list);
430
431 for (i = 0; i < nret; i++)
432 args.args[nargs+i] = 0;
433
434 if (enter_prom(&args, prom_entry) < 0)
435 return PROM_ERROR;
436
437 if (rets != NULL)
438 for (i = 1; i < nret; ++i)
439 rets[i-1] = be32_to_cpu(args.args[nargs+i]);
440
441 return (nret > 0) ? be32_to_cpu(args.args[nargs]) : 0;
442}
443
444
445static void __init prom_print(const char *msg)
446{
447 const char *p, *q;
448
449 if (prom.stdout == 0)
450 return;
451
452 for (p = msg; *p != 0; p = q) {
453 for (q = p; *q != 0 && *q != '\n'; ++q)
454 ;
455 if (q > p)
456 call_prom("write", 3, 1, prom.stdout, p, q - p);
457 if (*q == 0)
458 break;
459 ++q;
460 call_prom("write", 3, 1, prom.stdout, ADDR("\r\n"), 2);
461 }
462}
463
464
465
466
467
468
469static void __init prom_print_hex(unsigned long val)
470{
471 int i, nibbles = sizeof(val)*2;
472 char buf[sizeof(val)*2+1];
473
474 for (i = nibbles-1; i >= 0; i--) {
475 buf[i] = (val & 0xf) + '0';
476 if (buf[i] > '9')
477 buf[i] += ('a'-'0'-10);
478 val >>= 4;
479 }
480 buf[nibbles] = '\0';
481 call_prom("write", 3, 1, prom.stdout, buf, nibbles);
482}
483
484
485#define UL_DIGITS 21
486static void __init prom_print_dec(unsigned long val)
487{
488 int i, size;
489 char buf[UL_DIGITS+1];
490
491 for (i = UL_DIGITS-1; i >= 0; i--) {
492 buf[i] = (val % 10) + '0';
493 val = val/10;
494 if (val == 0)
495 break;
496 }
497
498 size = UL_DIGITS - i;
499 call_prom("write", 3, 1, prom.stdout, buf+i, size);
500}
501
502__printf(1, 2)
503static void __init prom_printf(const char *format, ...)
504{
505 const char *p, *q, *s;
506 va_list args;
507 unsigned long v;
508 long vs;
509 int n = 0;
510
511 va_start(args, format);
512 for (p = format; *p != 0; p = q) {
513 for (q = p; *q != 0 && *q != '\n' && *q != '%'; ++q)
514 ;
515 if (q > p)
516 call_prom("write", 3, 1, prom.stdout, p, q - p);
517 if (*q == 0)
518 break;
519 if (*q == '\n') {
520 ++q;
521 call_prom("write", 3, 1, prom.stdout,
522 ADDR("\r\n"), 2);
523 continue;
524 }
525 ++q;
526 if (*q == 0)
527 break;
528 while (*q == 'l') {
529 ++q;
530 ++n;
531 }
532 switch (*q) {
533 case 's':
534 ++q;
535 s = va_arg(args, const char *);
536 prom_print(s);
537 break;
538 case 'x':
539 ++q;
540 switch (n) {
541 case 0:
542 v = va_arg(args, unsigned int);
543 break;
544 case 1:
545 v = va_arg(args, unsigned long);
546 break;
547 case 2:
548 default:
549 v = va_arg(args, unsigned long long);
550 break;
551 }
552 prom_print_hex(v);
553 break;
554 case 'u':
555 ++q;
556 switch (n) {
557 case 0:
558 v = va_arg(args, unsigned int);
559 break;
560 case 1:
561 v = va_arg(args, unsigned long);
562 break;
563 case 2:
564 default:
565 v = va_arg(args, unsigned long long);
566 break;
567 }
568 prom_print_dec(v);
569 break;
570 case 'd':
571 ++q;
572 switch (n) {
573 case 0:
574 vs = va_arg(args, int);
575 break;
576 case 1:
577 vs = va_arg(args, long);
578 break;
579 case 2:
580 default:
581 vs = va_arg(args, long long);
582 break;
583 }
584 if (vs < 0) {
585 prom_print("-");
586 vs = -vs;
587 }
588 prom_print_dec(vs);
589 break;
590 }
591 }
592 va_end(args);
593}
594
595
596static unsigned int __init prom_claim(unsigned long virt, unsigned long size,
597 unsigned long align)
598{
599
600 if (align == 0 && (OF_WORKAROUNDS & OF_WA_CLAIM)) {
601
602
603
604
605 int ret;
606 prom_arg_t result;
607
608 ret = call_prom_ret("call-method", 5, 2, &result,
609 ADDR("claim"), prom.memory,
610 align, size, virt);
611 if (ret != 0 || result == -1)
612 return -1;
613 ret = call_prom_ret("call-method", 5, 2, &result,
614 ADDR("claim"), prom.mmumap,
615 align, size, virt);
616 if (ret != 0) {
617 call_prom("call-method", 4, 1, ADDR("release"),
618 prom.memory, size, virt);
619 return -1;
620 }
621
622 call_prom("call-method", 6, 1,
623 ADDR("map"), prom.mmumap, 0x12, size, virt, virt);
624 return virt;
625 }
626 return call_prom("claim", 3, 1, (prom_arg_t)virt, (prom_arg_t)size,
627 (prom_arg_t)align);
628}
629
630static void __init __attribute__((noreturn)) prom_panic(const char *reason)
631{
632 prom_print(reason);
633
634
635 if (of_platform == PLATFORM_POWERMAC)
636 asm("trap\n");
637
638
639 call_prom("exit", 0, 0);
640
641 for (;;)
642 ;
643}
644
645
646static int __init prom_next_node(phandle *nodep)
647{
648 phandle node;
649
650 if ((node = *nodep) != 0
651 && (*nodep = call_prom("child", 1, 1, node)) != 0)
652 return 1;
653 if ((*nodep = call_prom("peer", 1, 1, node)) != 0)
654 return 1;
655 for (;;) {
656 if ((node = call_prom("parent", 1, 1, node)) == 0)
657 return 0;
658 if ((*nodep = call_prom("peer", 1, 1, node)) != 0)
659 return 1;
660 }
661}
662
663static inline int __init prom_getprop(phandle node, const char *pname,
664 void *value, size_t valuelen)
665{
666 return call_prom("getprop", 4, 1, node, ADDR(pname),
667 (u32)(unsigned long) value, (u32) valuelen);
668}
669
670static inline int __init prom_getproplen(phandle node, const char *pname)
671{
672 return call_prom("getproplen", 2, 1, node, ADDR(pname));
673}
674
675static void add_string(char **str, const char *q)
676{
677 char *p = *str;
678
679 while (*q)
680 *p++ = *q++;
681 *p++ = ' ';
682 *str = p;
683}
684
685static char *tohex(unsigned int x)
686{
687 static const char digits[] __initconst = "0123456789abcdef";
688 static char result[9] __prombss;
689 int i;
690
691 result[8] = 0;
692 i = 8;
693 do {
694 --i;
695 result[i] = digits[x & 0xf];
696 x >>= 4;
697 } while (x != 0 && i > 0);
698 return &result[i];
699}
700
701static int __init prom_setprop(phandle node, const char *nodename,
702 const char *pname, void *value, size_t valuelen)
703{
704 char cmd[256], *p;
705
706 if (!(OF_WORKAROUNDS & OF_WA_LONGTRAIL))
707 return call_prom("setprop", 4, 1, node, ADDR(pname),
708 (u32)(unsigned long) value, (u32) valuelen);
709
710
711 p = cmd;
712 add_string(&p, "dev");
713 add_string(&p, nodename);
714 add_string(&p, tohex((u32)(unsigned long) value));
715 add_string(&p, tohex(valuelen));
716 add_string(&p, tohex(ADDR(pname)));
717 add_string(&p, tohex(prom_strlen(pname)));
718 add_string(&p, "property");
719 *p = 0;
720 return call_prom("interpret", 1, 1, (u32)(unsigned long) cmd);
721}
722
723
724#define prom_isxdigit(c) \
725 (('0' <= (c) && (c) <= '9') || ('a' <= (c) && (c) <= 'f') || ('A' <= (c) && (c) <= 'F'))
726
727#define prom_isdigit(c) ('0' <= (c) && (c) <= '9')
728#define prom_islower(c) ('a' <= (c) && (c) <= 'z')
729#define prom_toupper(c) (prom_islower(c) ? ((c) - 'a' + 'A') : (c))
730
731static unsigned long prom_strtoul(const char *cp, const char **endp)
732{
733 unsigned long result = 0, base = 10, value;
734
735 if (*cp == '0') {
736 base = 8;
737 cp++;
738 if (prom_toupper(*cp) == 'X') {
739 cp++;
740 base = 16;
741 }
742 }
743
744 while (prom_isxdigit(*cp) &&
745 (value = prom_isdigit(*cp) ? *cp - '0' : prom_toupper(*cp) - 'A' + 10) < base) {
746 result = result * base + value;
747 cp++;
748 }
749
750 if (endp)
751 *endp = cp;
752
753 return result;
754}
755
756static unsigned long prom_memparse(const char *ptr, const char **retptr)
757{
758 unsigned long ret = prom_strtoul(ptr, retptr);
759 int shift = 0;
760
761
762
763
764
765
766 if ('G' == **retptr || 'g' == **retptr)
767 shift = 30;
768
769 if ('M' == **retptr || 'm' == **retptr)
770 shift = 20;
771
772 if ('K' == **retptr || 'k' == **retptr)
773 shift = 10;
774
775 if (shift) {
776 ret <<= shift;
777 (*retptr)++;
778 }
779
780 return ret;
781}
782
783
784
785
786
787static void __init early_cmdline_parse(void)
788{
789 const char *opt;
790
791 char *p;
792 int l = 0;
793
794 prom_cmd_line[0] = 0;
795 p = prom_cmd_line;
796
797 if (!IS_ENABLED(CONFIG_CMDLINE_FORCE) && (long)prom.chosen > 0)
798 l = prom_getprop(prom.chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
799
800 if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) || l <= 0 || p[0] == '\0')
801 prom_strlcat(prom_cmd_line, " " CONFIG_CMDLINE,
802 sizeof(prom_cmd_line));
803
804 prom_printf("command line: %s\n", prom_cmd_line);
805
806#ifdef CONFIG_PPC64
807 opt = prom_strstr(prom_cmd_line, "iommu=");
808 if (opt) {
809 prom_printf("iommu opt is: %s\n", opt);
810 opt += 6;
811 while (*opt && *opt == ' ')
812 opt++;
813 if (!prom_strncmp(opt, "off", 3))
814 prom_iommu_off = 1;
815 else if (!prom_strncmp(opt, "force", 5))
816 prom_iommu_force_on = 1;
817 }
818#endif
819 opt = prom_strstr(prom_cmd_line, "mem=");
820 if (opt) {
821 opt += 4;
822 prom_memory_limit = prom_memparse(opt, (const char **)&opt);
823#ifdef CONFIG_PPC64
824
825 prom_memory_limit = ALIGN(prom_memory_limit, 0x1000000);
826#endif
827 }
828
829#ifdef CONFIG_PPC_PSERIES
830 prom_radix_disable = !IS_ENABLED(CONFIG_PPC_RADIX_MMU_DEFAULT);
831 opt = prom_strstr(prom_cmd_line, "disable_radix");
832 if (opt) {
833 opt += 13;
834 if (*opt && *opt == '=') {
835 bool val;
836
837 if (prom_strtobool(++opt, &val))
838 prom_radix_disable = false;
839 else
840 prom_radix_disable = val;
841 } else
842 prom_radix_disable = true;
843 }
844 if (prom_radix_disable)
845 prom_debug("Radix disabled from cmdline\n");
846
847 opt = prom_strstr(prom_cmd_line, "radix_hcall_invalidate=on");
848 if (opt) {
849 prom_radix_gtse_disable = true;
850 prom_debug("Radix GTSE disabled from cmdline\n");
851 }
852
853 opt = prom_strstr(prom_cmd_line, "xive=off");
854 if (opt) {
855 prom_xive_disable = true;
856 prom_debug("XIVE disabled from cmdline\n");
857 }
858#endif
859
860#ifdef CONFIG_PPC_SVM
861 opt = prom_strstr(prom_cmd_line, "svm=");
862 if (opt) {
863 bool val;
864
865 opt += sizeof("svm=") - 1;
866 if (!prom_strtobool(opt, &val))
867 prom_svm_enable = val;
868 }
869#endif
870}
871
872#ifdef CONFIG_PPC_PSERIES
873
874
875
876
877
878
879
880
881
882#define NUM_VECTORS(n) ((n) - 1)
883
884
885
886
887
888#define VECTOR_LENGTH(n) (1 + (n) - 2)
889
890struct option_vector1 {
891 u8 byte1;
892 u8 arch_versions;
893 u8 arch_versions3;
894} __packed;
895
896struct option_vector2 {
897 u8 byte1;
898 __be16 reserved;
899 __be32 real_base;
900 __be32 real_size;
901 __be32 virt_base;
902 __be32 virt_size;
903 __be32 load_base;
904 __be32 min_rma;
905 __be32 min_load;
906 u8 min_rma_percent;
907 u8 max_pft_size;
908} __packed;
909
910struct option_vector3 {
911 u8 byte1;
912 u8 byte2;
913} __packed;
914
915struct option_vector4 {
916 u8 byte1;
917 u8 min_vp_cap;
918} __packed;
919
920struct option_vector5 {
921 u8 byte1;
922 u8 byte2;
923 u8 byte3;
924 u8 cmo;
925 u8 associativity;
926 u8 bin_opts;
927 u8 micro_checkpoint;
928 u8 reserved0;
929 __be32 max_cpus;
930 __be16 papr_level;
931 __be16 reserved1;
932 u8 platform_facilities;
933 u8 reserved2;
934 __be16 reserved3;
935 u8 subprocessors;
936 u8 byte22;
937 u8 intarch;
938 u8 mmu;
939 u8 hash_ext;
940 u8 radix_ext;
941} __packed;
942
943struct option_vector6 {
944 u8 reserved;
945 u8 secondary_pteg;
946 u8 os_name;
947} __packed;
948
949struct option_vector7 {
950 u8 os_id[256];
951} __packed;
952
953struct ibm_arch_vec {
954 struct { u32 mask, val; } pvrs[14];
955
956 u8 num_vectors;
957
958 u8 vec1_len;
959 struct option_vector1 vec1;
960
961 u8 vec2_len;
962 struct option_vector2 vec2;
963
964 u8 vec3_len;
965 struct option_vector3 vec3;
966
967 u8 vec4_len;
968 struct option_vector4 vec4;
969
970 u8 vec5_len;
971 struct option_vector5 vec5;
972
973 u8 vec6_len;
974 struct option_vector6 vec6;
975
976 u8 vec7_len;
977 struct option_vector7 vec7;
978} __packed;
979
980static const struct ibm_arch_vec ibm_architecture_vec_template __initconst = {
981 .pvrs = {
982 {
983 .mask = cpu_to_be32(0xfffe0000),
984 .val = cpu_to_be32(0x003a0000),
985 },
986 {
987 .mask = cpu_to_be32(0xffff0000),
988 .val = cpu_to_be32(0x003e0000),
989 },
990 {
991 .mask = cpu_to_be32(0xffff0000),
992 .val = cpu_to_be32(0x003f0000),
993 },
994 {
995 .mask = cpu_to_be32(0xffff0000),
996 .val = cpu_to_be32(0x004b0000),
997 },
998 {
999 .mask = cpu_to_be32(0xffff0000),
1000 .val = cpu_to_be32(0x004c0000),
1001 },
1002 {
1003 .mask = cpu_to_be32(0xffff0000),
1004 .val = cpu_to_be32(0x004d0000),
1005 },
1006 {
1007 .mask = cpu_to_be32(0xffff0000),
1008 .val = cpu_to_be32(0x004e0000),
1009 },
1010 {
1011 .mask = cpu_to_be32(0xffff0000),
1012 .val = cpu_to_be32(0x00800000),
1013 },
1014 {
1015 .mask = cpu_to_be32(0xffffffff),
1016 .val = cpu_to_be32(0x0f000006),
1017 },
1018 {
1019 .mask = cpu_to_be32(0xffffffff),
1020 .val = cpu_to_be32(0x0f000005),
1021 },
1022 {
1023 .mask = cpu_to_be32(0xffffffff),
1024 .val = cpu_to_be32(0x0f000004),
1025 },
1026 {
1027 .mask = cpu_to_be32(0xffffffff),
1028 .val = cpu_to_be32(0x0f000003),
1029 },
1030 {
1031 .mask = cpu_to_be32(0xffffffff),
1032 .val = cpu_to_be32(0x0f000002),
1033 },
1034 {
1035 .mask = cpu_to_be32(0xfffffffe),
1036 .val = cpu_to_be32(0x0f000001),
1037 },
1038 },
1039
1040 .num_vectors = NUM_VECTORS(6),
1041
1042 .vec1_len = VECTOR_LENGTH(sizeof(struct option_vector1)),
1043 .vec1 = {
1044 .byte1 = 0,
1045 .arch_versions = OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 |
1046 OV1_PPC_2_04 | OV1_PPC_2_05 | OV1_PPC_2_06 | OV1_PPC_2_07,
1047 .arch_versions3 = OV1_PPC_3_00 | OV1_PPC_3_1,
1048 },
1049
1050 .vec2_len = VECTOR_LENGTH(sizeof(struct option_vector2)),
1051
1052 .vec2 = {
1053 .byte1 = OV2_REAL_MODE,
1054 .reserved = 0,
1055 .real_base = cpu_to_be32(0xffffffff),
1056 .real_size = cpu_to_be32(0xffffffff),
1057 .virt_base = cpu_to_be32(0xffffffff),
1058 .virt_size = cpu_to_be32(0xffffffff),
1059 .load_base = cpu_to_be32(0xffffffff),
1060 .min_rma = cpu_to_be32(512),
1061 .min_load = cpu_to_be32(0xffffffff),
1062 .min_rma_percent = 0,
1063 .max_pft_size = 48,
1064 },
1065
1066 .vec3_len = VECTOR_LENGTH(sizeof(struct option_vector3)),
1067
1068 .vec3 = {
1069 .byte1 = 0,
1070 .byte2 = OV3_FP | OV3_VMX | OV3_DFP,
1071 },
1072
1073 .vec4_len = VECTOR_LENGTH(sizeof(struct option_vector4)),
1074
1075 .vec4 = {
1076 .byte1 = 0,
1077 .min_vp_cap = OV4_MIN_ENT_CAP,
1078 },
1079
1080 .vec5_len = VECTOR_LENGTH(sizeof(struct option_vector5)),
1081
1082 .vec5 = {
1083 .byte1 = 0,
1084 .byte2 = OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) |
1085 OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) |
1086#ifdef CONFIG_PCI_MSI
1087
1088 OV5_FEAT(OV5_MSI),
1089#else
1090 0,
1091#endif
1092 .byte3 = 0,
1093 .cmo =
1094#ifdef CONFIG_PPC_SMLPAR
1095 OV5_FEAT(OV5_CMO) | OV5_FEAT(OV5_XCMO),
1096#else
1097 0,
1098#endif
1099 .associativity = OV5_FEAT(OV5_TYPE1_AFFINITY) | OV5_FEAT(OV5_PRRN),
1100 .bin_opts = OV5_FEAT(OV5_RESIZE_HPT) | OV5_FEAT(OV5_HP_EVT),
1101 .micro_checkpoint = 0,
1102 .reserved0 = 0,
1103 .max_cpus = cpu_to_be32(NR_CPUS),
1104 .papr_level = 0,
1105 .reserved1 = 0,
1106 .platform_facilities = OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) | OV5_FEAT(OV5_PFO_HW_842),
1107 .reserved2 = 0,
1108 .reserved3 = 0,
1109 .subprocessors = 1,
1110 .byte22 = OV5_FEAT(OV5_DRMEM_V2) | OV5_FEAT(OV5_DRC_INFO),
1111 .intarch = 0,
1112 .mmu = 0,
1113 .hash_ext = 0,
1114 .radix_ext = 0,
1115 },
1116
1117
1118 .vec6_len = VECTOR_LENGTH(sizeof(struct option_vector6)),
1119 .vec6 = {
1120 .reserved = 0,
1121 .secondary_pteg = 0,
1122 .os_name = OV6_LINUX,
1123 },
1124
1125
1126 .vec7_len = VECTOR_LENGTH(sizeof(struct option_vector7)),
1127};
1128
1129static struct ibm_arch_vec __prombss ibm_architecture_vec ____cacheline_aligned;
1130
1131
1132#ifdef __BIG_ENDIAN__
1133static const struct fake_elf {
1134 Elf32_Ehdr elfhdr;
1135 Elf32_Phdr phdr[2];
1136 struct chrpnote {
1137 u32 namesz;
1138 u32 descsz;
1139 u32 type;
1140 char name[8];
1141 struct chrpdesc {
1142 u32 real_mode;
1143 u32 real_base;
1144 u32 real_size;
1145 u32 virt_base;
1146 u32 virt_size;
1147 u32 load_base;
1148 } chrpdesc;
1149 } chrpnote;
1150 struct rpanote {
1151 u32 namesz;
1152 u32 descsz;
1153 u32 type;
1154 char name[24];
1155 struct rpadesc {
1156 u32 lpar_affinity;
1157 u32 min_rmo_size;
1158 u32 min_rmo_percent;
1159 u32 max_pft_size;
1160 u32 splpar;
1161 u32 min_load;
1162 u32 new_mem_def;
1163 u32 ignore_me;
1164 } rpadesc;
1165 } rpanote;
1166} fake_elf __initconst = {
1167 .elfhdr = {
1168 .e_ident = { 0x7f, 'E', 'L', 'F',
1169 ELFCLASS32, ELFDATA2MSB, EV_CURRENT },
1170 .e_type = ET_EXEC,
1171 .e_machine = EM_PPC,
1172 .e_version = EV_CURRENT,
1173 .e_phoff = offsetof(struct fake_elf, phdr),
1174 .e_phentsize = sizeof(Elf32_Phdr),
1175 .e_phnum = 2
1176 },
1177 .phdr = {
1178 [0] = {
1179 .p_type = PT_NOTE,
1180 .p_offset = offsetof(struct fake_elf, chrpnote),
1181 .p_filesz = sizeof(struct chrpnote)
1182 }, [1] = {
1183 .p_type = PT_NOTE,
1184 .p_offset = offsetof(struct fake_elf, rpanote),
1185 .p_filesz = sizeof(struct rpanote)
1186 }
1187 },
1188 .chrpnote = {
1189 .namesz = sizeof("PowerPC"),
1190 .descsz = sizeof(struct chrpdesc),
1191 .type = 0x1275,
1192 .name = "PowerPC",
1193 .chrpdesc = {
1194 .real_mode = ~0U,
1195 .real_base = ~0U,
1196 .real_size = ~0U,
1197 .virt_base = ~0U,
1198 .virt_size = ~0U,
1199 .load_base = ~0U
1200 },
1201 },
1202 .rpanote = {
1203 .namesz = sizeof("IBM,RPA-Client-Config"),
1204 .descsz = sizeof(struct rpadesc),
1205 .type = 0x12759999,
1206 .name = "IBM,RPA-Client-Config",
1207 .rpadesc = {
1208 .lpar_affinity = 0,
1209 .min_rmo_size = 64,
1210 .min_rmo_percent = 0,
1211 .max_pft_size = 48,
1212 .splpar = 1,
1213 .min_load = ~0U,
1214 .new_mem_def = 0
1215 }
1216 }
1217};
1218#endif
1219
1220static int __init prom_count_smt_threads(void)
1221{
1222 phandle node;
1223 char type[64];
1224 unsigned int plen;
1225
1226
1227 for (node = 0; prom_next_node(&node); ) {
1228 type[0] = 0;
1229 prom_getprop(node, "device_type", type, sizeof(type));
1230
1231 if (prom_strcmp(type, "cpu"))
1232 continue;
1233
1234
1235
1236
1237
1238 plen = prom_getproplen(node, "ibm,ppc-interrupt-server#s");
1239 if (plen == PROM_ERROR)
1240 break;
1241 plen >>= 2;
1242 prom_debug("Found %lu smt threads per core\n", (unsigned long)plen);
1243
1244
1245 if (plen < 1 || plen > 64) {
1246 prom_printf("Threads per core %lu out of bounds, assuming 1\n",
1247 (unsigned long)plen);
1248 return 1;
1249 }
1250 return plen;
1251 }
1252 prom_debug("No threads found, assuming 1 per core\n");
1253
1254 return 1;
1255
1256}
1257
1258static void __init prom_parse_mmu_model(u8 val,
1259 struct platform_support *support)
1260{
1261 switch (val) {
1262 case OV5_FEAT(OV5_MMU_DYNAMIC):
1263 case OV5_FEAT(OV5_MMU_EITHER):
1264 prom_debug("MMU - either supported\n");
1265 support->radix_mmu = !prom_radix_disable;
1266 support->hash_mmu = true;
1267 break;
1268 case OV5_FEAT(OV5_MMU_RADIX):
1269 prom_debug("MMU - radix only\n");
1270 if (prom_radix_disable) {
1271
1272
1273
1274
1275 prom_printf("WARNING: Ignoring cmdline option disable_radix\n");
1276 }
1277 support->radix_mmu = true;
1278 break;
1279 case OV5_FEAT(OV5_MMU_HASH):
1280 prom_debug("MMU - hash only\n");
1281 support->hash_mmu = true;
1282 break;
1283 default:
1284 prom_debug("Unknown mmu support option: 0x%x\n", val);
1285 break;
1286 }
1287}
1288
1289static void __init prom_parse_xive_model(u8 val,
1290 struct platform_support *support)
1291{
1292 switch (val) {
1293 case OV5_FEAT(OV5_XIVE_EITHER):
1294 prom_debug("XIVE - either mode supported\n");
1295 support->xive = !prom_xive_disable;
1296 break;
1297 case OV5_FEAT(OV5_XIVE_EXPLOIT):
1298 prom_debug("XIVE - exploitation mode supported\n");
1299 if (prom_xive_disable) {
1300
1301
1302
1303
1304 prom_printf("WARNING: Ignoring cmdline option xive=off\n");
1305 }
1306 support->xive = true;
1307 break;
1308 case OV5_FEAT(OV5_XIVE_LEGACY):
1309 prom_debug("XIVE - legacy mode supported\n");
1310 break;
1311 default:
1312 prom_debug("Unknown xive support option: 0x%x\n", val);
1313 break;
1314 }
1315}
1316
1317static void __init prom_parse_platform_support(u8 index, u8 val,
1318 struct platform_support *support)
1319{
1320 switch (index) {
1321 case OV5_INDX(OV5_MMU_SUPPORT):
1322 prom_parse_mmu_model(val & OV5_FEAT(OV5_MMU_SUPPORT), support);
1323 break;
1324 case OV5_INDX(OV5_RADIX_GTSE):
1325 if (val & OV5_FEAT(OV5_RADIX_GTSE))
1326 support->radix_gtse = !prom_radix_gtse_disable;
1327 break;
1328 case OV5_INDX(OV5_XIVE_SUPPORT):
1329 prom_parse_xive_model(val & OV5_FEAT(OV5_XIVE_SUPPORT),
1330 support);
1331 break;
1332 }
1333}
1334
1335static void __init prom_check_platform_support(void)
1336{
1337 struct platform_support supported = {
1338 .hash_mmu = false,
1339 .radix_mmu = false,
1340 .radix_gtse = false,
1341 .xive = false
1342 };
1343 int prop_len = prom_getproplen(prom.chosen,
1344 "ibm,arch-vec-5-platform-support");
1345
1346
1347
1348
1349
1350
1351
1352 memcpy(&ibm_architecture_vec, &ibm_architecture_vec_template,
1353 sizeof(ibm_architecture_vec));
1354
1355 prom_strscpy_pad(ibm_architecture_vec.vec7.os_id, linux_banner, 256);
1356
1357 if (prop_len > 1) {
1358 int i;
1359 u8 vec[8];
1360 prom_debug("Found ibm,arch-vec-5-platform-support, len: %d\n",
1361 prop_len);
1362 if (prop_len > sizeof(vec))
1363 prom_printf("WARNING: ibm,arch-vec-5-platform-support longer than expected (len: %d)\n",
1364 prop_len);
1365 prom_getprop(prom.chosen, "ibm,arch-vec-5-platform-support", &vec, sizeof(vec));
1366 for (i = 0; i < prop_len; i += 2) {
1367 prom_debug("%d: index = 0x%x val = 0x%x\n", i / 2, vec[i], vec[i + 1]);
1368 prom_parse_platform_support(vec[i], vec[i + 1], &supported);
1369 }
1370 }
1371
1372 if (supported.radix_mmu && IS_ENABLED(CONFIG_PPC_RADIX_MMU)) {
1373
1374 prom_debug("Asking for radix\n");
1375 ibm_architecture_vec.vec5.mmu = OV5_FEAT(OV5_MMU_RADIX);
1376 if (supported.radix_gtse)
1377 ibm_architecture_vec.vec5.radix_ext =
1378 OV5_FEAT(OV5_RADIX_GTSE);
1379 else
1380 prom_debug("Radix GTSE isn't supported\n");
1381 } else if (supported.hash_mmu) {
1382
1383 prom_debug("Asking for hash\n");
1384 ibm_architecture_vec.vec5.mmu = OV5_FEAT(OV5_MMU_HASH);
1385 } else {
1386
1387 prom_debug("Assuming legacy hash support\n");
1388 }
1389
1390 if (supported.xive) {
1391 prom_debug("Asking for XIVE\n");
1392 ibm_architecture_vec.vec5.intarch = OV5_FEAT(OV5_XIVE_EXPLOIT);
1393 }
1394}
1395
1396static void __init prom_send_capabilities(void)
1397{
1398 ihandle root;
1399 prom_arg_t ret;
1400 u32 cores;
1401
1402
1403 prom_check_platform_support();
1404
1405 root = call_prom("open", 1, 1, ADDR("/"));
1406 if (root != 0) {
1407
1408
1409
1410
1411
1412
1413
1414 cores = DIV_ROUND_UP(NR_CPUS, prom_count_smt_threads());
1415 prom_printf("Max number of cores passed to firmware: %u (NR_CPUS = %d)\n",
1416 cores, NR_CPUS);
1417
1418 ibm_architecture_vec.vec5.max_cpus = cpu_to_be32(cores);
1419
1420
1421 prom_printf("Calling ibm,client-architecture-support...");
1422 if (call_prom_ret("call-method", 3, 2, &ret,
1423 ADDR("ibm,client-architecture-support"),
1424 root,
1425 ADDR(&ibm_architecture_vec)) == 0) {
1426
1427 if (ret)
1428 prom_printf("\nWARNING: ibm,client-architecture"
1429 "-support call FAILED!\n");
1430 call_prom("close", 1, 0, root);
1431 prom_printf(" done\n");
1432 return;
1433 }
1434 call_prom("close", 1, 0, root);
1435 prom_printf(" not implemented\n");
1436 }
1437
1438#ifdef __BIG_ENDIAN__
1439 {
1440 ihandle elfloader;
1441
1442
1443 elfloader = call_prom("open", 1, 1,
1444 ADDR("/packages/elf-loader"));
1445 if (elfloader == 0) {
1446 prom_printf("couldn't open /packages/elf-loader\n");
1447 return;
1448 }
1449 call_prom("call-method", 3, 1, ADDR("process-elf-header"),
1450 elfloader, ADDR(&fake_elf));
1451 call_prom("close", 1, 0, elfloader);
1452 }
1453#endif
1454}
1455#endif
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490static unsigned long __init alloc_up(unsigned long size, unsigned long align)
1491{
1492 unsigned long base = alloc_bottom;
1493 unsigned long addr = 0;
1494
1495 if (align)
1496 base = ALIGN(base, align);
1497 prom_debug("%s(%lx, %lx)\n", __func__, size, align);
1498 if (ram_top == 0)
1499 prom_panic("alloc_up() called with mem not initialized\n");
1500
1501 if (align)
1502 base = ALIGN(alloc_bottom, align);
1503 else
1504 base = alloc_bottom;
1505
1506 for(; (base + size) <= alloc_top;
1507 base = ALIGN(base + 0x100000, align)) {
1508 prom_debug(" trying: 0x%lx\n\r", base);
1509 addr = (unsigned long)prom_claim(base, size, 0);
1510 if (addr != PROM_ERROR && addr != 0)
1511 break;
1512 addr = 0;
1513 if (align == 0)
1514 break;
1515 }
1516 if (addr == 0)
1517 return 0;
1518 alloc_bottom = addr + size;
1519
1520 prom_debug(" -> %lx\n", addr);
1521 prom_debug(" alloc_bottom : %lx\n", alloc_bottom);
1522 prom_debug(" alloc_top : %lx\n", alloc_top);
1523 prom_debug(" alloc_top_hi : %lx\n", alloc_top_high);
1524 prom_debug(" rmo_top : %lx\n", rmo_top);
1525 prom_debug(" ram_top : %lx\n", ram_top);
1526
1527 return addr;
1528}
1529
1530
1531
1532
1533
1534
1535static unsigned long __init alloc_down(unsigned long size, unsigned long align,
1536 int highmem)
1537{
1538 unsigned long base, addr = 0;
1539
1540 prom_debug("%s(%lx, %lx, %s)\n", __func__, size, align,
1541 highmem ? "(high)" : "(low)");
1542 if (ram_top == 0)
1543 prom_panic("alloc_down() called with mem not initialized\n");
1544
1545 if (highmem) {
1546
1547 addr = ALIGN_DOWN(alloc_top_high - size, align);
1548 if (addr <= alloc_bottom)
1549 return 0;
1550
1551
1552
1553
1554 if (addr < rmo_top) {
1555
1556 if (alloc_top == rmo_top)
1557 alloc_top = rmo_top = addr;
1558 else
1559 return 0;
1560 }
1561 alloc_top_high = addr;
1562 goto bail;
1563 }
1564
1565 base = ALIGN_DOWN(alloc_top - size, align);
1566 for (; base > alloc_bottom;
1567 base = ALIGN_DOWN(base - 0x100000, align)) {
1568 prom_debug(" trying: 0x%lx\n\r", base);
1569 addr = (unsigned long)prom_claim(base, size, 0);
1570 if (addr != PROM_ERROR && addr != 0)
1571 break;
1572 addr = 0;
1573 }
1574 if (addr == 0)
1575 return 0;
1576 alloc_top = addr;
1577
1578 bail:
1579 prom_debug(" -> %lx\n", addr);
1580 prom_debug(" alloc_bottom : %lx\n", alloc_bottom);
1581 prom_debug(" alloc_top : %lx\n", alloc_top);
1582 prom_debug(" alloc_top_hi : %lx\n", alloc_top_high);
1583 prom_debug(" rmo_top : %lx\n", rmo_top);
1584 prom_debug(" ram_top : %lx\n", ram_top);
1585
1586 return addr;
1587}
1588
1589
1590
1591
1592static unsigned long __init prom_next_cell(int s, cell_t **cellp)
1593{
1594 cell_t *p = *cellp;
1595 unsigned long r = 0;
1596
1597
1598 while (s > sizeof(unsigned long) / 4) {
1599 p++;
1600 s--;
1601 }
1602 r = be32_to_cpu(*p++);
1603#ifdef CONFIG_PPC64
1604 if (s > 1) {
1605 r <<= 32;
1606 r |= be32_to_cpu(*(p++));
1607 }
1608#endif
1609 *cellp = p;
1610 return r;
1611}
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621static void __init reserve_mem(u64 base, u64 size)
1622{
1623 u64 top = base + size;
1624 unsigned long cnt = mem_reserve_cnt;
1625
1626 if (size == 0)
1627 return;
1628
1629
1630
1631
1632
1633 base = ALIGN_DOWN(base, PAGE_SIZE);
1634 top = ALIGN(top, PAGE_SIZE);
1635 size = top - base;
1636
1637 if (cnt >= (MEM_RESERVE_MAP_SIZE - 1))
1638 prom_panic("Memory reserve map exhausted !\n");
1639 mem_reserve_map[cnt].base = cpu_to_be64(base);
1640 mem_reserve_map[cnt].size = cpu_to_be64(size);
1641 mem_reserve_cnt = cnt + 1;
1642}
1643
1644
1645
1646
1647
1648static void __init prom_init_mem(void)
1649{
1650 phandle node;
1651 char type[64];
1652 unsigned int plen;
1653 cell_t *p, *endp;
1654 __be32 val;
1655 u32 rac, rsc;
1656
1657
1658
1659
1660
1661
1662 val = cpu_to_be32(2);
1663 prom_getprop(prom.root, "#address-cells", &val, sizeof(val));
1664 rac = be32_to_cpu(val);
1665 val = cpu_to_be32(1);
1666 prom_getprop(prom.root, "#size-cells", &val, sizeof(rsc));
1667 rsc = be32_to_cpu(val);
1668 prom_debug("root_addr_cells: %x\n", rac);
1669 prom_debug("root_size_cells: %x\n", rsc);
1670
1671 prom_debug("scanning memory:\n");
1672
1673 for (node = 0; prom_next_node(&node); ) {
1674 type[0] = 0;
1675 prom_getprop(node, "device_type", type, sizeof(type));
1676
1677 if (type[0] == 0) {
1678
1679
1680
1681
1682 prom_getprop(node, "name", type, sizeof(type));
1683 }
1684 if (prom_strcmp(type, "memory"))
1685 continue;
1686
1687 plen = prom_getprop(node, "reg", regbuf, sizeof(regbuf));
1688 if (plen > sizeof(regbuf)) {
1689 prom_printf("memory node too large for buffer !\n");
1690 plen = sizeof(regbuf);
1691 }
1692 p = regbuf;
1693 endp = p + (plen / sizeof(cell_t));
1694
1695#ifdef DEBUG_PROM
1696 memset(prom_scratch, 0, sizeof(prom_scratch));
1697 call_prom("package-to-path", 3, 1, node, prom_scratch,
1698 sizeof(prom_scratch) - 1);
1699 prom_debug(" node %s :\n", prom_scratch);
1700#endif
1701
1702 while ((endp - p) >= (rac + rsc)) {
1703 unsigned long base, size;
1704
1705 base = prom_next_cell(rac, &p);
1706 size = prom_next_cell(rsc, &p);
1707
1708 if (size == 0)
1709 continue;
1710 prom_debug(" %lx %lx\n", base, size);
1711 if (base == 0 && (of_platform & PLATFORM_LPAR))
1712 rmo_top = size;
1713 if ((base + size) > ram_top)
1714 ram_top = base + size;
1715 }
1716 }
1717
1718 alloc_bottom = PAGE_ALIGN((unsigned long)&_end + 0x4000);
1719
1720
1721
1722
1723
1724
1725
1726 alloc_top_high = ram_top;
1727
1728 if (prom_memory_limit) {
1729 if (prom_memory_limit <= alloc_bottom) {
1730 prom_printf("Ignoring mem=%lx <= alloc_bottom.\n",
1731 prom_memory_limit);
1732 prom_memory_limit = 0;
1733 } else if (prom_memory_limit >= ram_top) {
1734 prom_printf("Ignoring mem=%lx >= ram_top.\n",
1735 prom_memory_limit);
1736 prom_memory_limit = 0;
1737 } else {
1738 ram_top = prom_memory_limit;
1739 rmo_top = min(rmo_top, prom_memory_limit);
1740 }
1741 }
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751 if (!rmo_top)
1752 rmo_top = ram_top;
1753 rmo_top = min(0x30000000ul, rmo_top);
1754 alloc_top = rmo_top;
1755 alloc_top_high = ram_top;
1756
1757
1758
1759
1760
1761 if (prom_initrd_start &&
1762 prom_initrd_start < rmo_top &&
1763 prom_initrd_end > alloc_bottom)
1764 alloc_bottom = PAGE_ALIGN(prom_initrd_end);
1765
1766 prom_printf("memory layout at init:\n");
1767 prom_printf(" memory_limit : %lx (16 MB aligned)\n",
1768 prom_memory_limit);
1769 prom_printf(" alloc_bottom : %lx\n", alloc_bottom);
1770 prom_printf(" alloc_top : %lx\n", alloc_top);
1771 prom_printf(" alloc_top_hi : %lx\n", alloc_top_high);
1772 prom_printf(" rmo_top : %lx\n", rmo_top);
1773 prom_printf(" ram_top : %lx\n", ram_top);
1774}
1775
1776static void __init prom_close_stdin(void)
1777{
1778 __be32 val;
1779 ihandle stdin;
1780
1781 if (prom_getprop(prom.chosen, "stdin", &val, sizeof(val)) > 0) {
1782 stdin = be32_to_cpu(val);
1783 call_prom("close", 1, 0, stdin);
1784 }
1785}
1786
1787#ifdef CONFIG_PPC_SVM
1788static int prom_rtas_hcall(uint64_t args)
1789{
1790 register uint64_t arg1 asm("r3") = H_RTAS;
1791 register uint64_t arg2 asm("r4") = args;
1792
1793 asm volatile("sc 1\n" : "=r" (arg1) :
1794 "r" (arg1),
1795 "r" (arg2) :);
1796 srr_regs_clobbered();
1797
1798 return arg1;
1799}
1800
1801static struct rtas_args __prombss os_term_args;
1802
1803static void __init prom_rtas_os_term(char *str)
1804{
1805 phandle rtas_node;
1806 __be32 val;
1807 u32 token;
1808
1809 prom_debug("%s: start...\n", __func__);
1810 rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas"));
1811 prom_debug("rtas_node: %x\n", rtas_node);
1812 if (!PHANDLE_VALID(rtas_node))
1813 return;
1814
1815 val = 0;
1816 prom_getprop(rtas_node, "ibm,os-term", &val, sizeof(val));
1817 token = be32_to_cpu(val);
1818 prom_debug("ibm,os-term: %x\n", token);
1819 if (token == 0)
1820 prom_panic("Could not get token for ibm,os-term\n");
1821 os_term_args.token = cpu_to_be32(token);
1822 os_term_args.nargs = cpu_to_be32(1);
1823 os_term_args.nret = cpu_to_be32(1);
1824 os_term_args.args[0] = cpu_to_be32(__pa(str));
1825 prom_rtas_hcall((uint64_t)&os_term_args);
1826}
1827#endif
1828
1829
1830
1831
1832static void __init prom_instantiate_rtas(void)
1833{
1834 phandle rtas_node;
1835 ihandle rtas_inst;
1836 u32 base, entry = 0;
1837 __be32 val;
1838 u32 size = 0;
1839
1840 prom_debug("prom_instantiate_rtas: start...\n");
1841
1842 rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas"));
1843 prom_debug("rtas_node: %x\n", rtas_node);
1844 if (!PHANDLE_VALID(rtas_node))
1845 return;
1846
1847 val = 0;
1848 prom_getprop(rtas_node, "rtas-size", &val, sizeof(size));
1849 size = be32_to_cpu(val);
1850 if (size == 0)
1851 return;
1852
1853 base = alloc_down(size, PAGE_SIZE, 0);
1854 if (base == 0)
1855 prom_panic("Could not allocate memory for RTAS\n");
1856
1857 rtas_inst = call_prom("open", 1, 1, ADDR("/rtas"));
1858 if (!IHANDLE_VALID(rtas_inst)) {
1859 prom_printf("opening rtas package failed (%x)\n", rtas_inst);
1860 return;
1861 }
1862
1863 prom_printf("instantiating rtas at 0x%x...", base);
1864
1865 if (call_prom_ret("call-method", 3, 2, &entry,
1866 ADDR("instantiate-rtas"),
1867 rtas_inst, base) != 0
1868 || entry == 0) {
1869 prom_printf(" failed\n");
1870 return;
1871 }
1872 prom_printf(" done\n");
1873
1874 reserve_mem(base, size);
1875
1876 val = cpu_to_be32(base);
1877 prom_setprop(rtas_node, "/rtas", "linux,rtas-base",
1878 &val, sizeof(val));
1879 val = cpu_to_be32(entry);
1880 prom_setprop(rtas_node, "/rtas", "linux,rtas-entry",
1881 &val, sizeof(val));
1882
1883
1884 if (prom_getprop(rtas_node, "query-cpu-stopped-state",
1885 &val, sizeof(val)) != PROM_ERROR)
1886 rtas_has_query_cpu_stopped = true;
1887
1888 prom_debug("rtas base = 0x%x\n", base);
1889 prom_debug("rtas entry = 0x%x\n", entry);
1890 prom_debug("rtas size = 0x%x\n", size);
1891
1892 prom_debug("prom_instantiate_rtas: end...\n");
1893}
1894
1895#ifdef CONFIG_PPC64
1896
1897
1898
1899static void __init prom_instantiate_sml(void)
1900{
1901 phandle ibmvtpm_node;
1902 ihandle ibmvtpm_inst;
1903 u32 entry = 0, size = 0, succ = 0;
1904 u64 base;
1905 __be32 val;
1906
1907 prom_debug("prom_instantiate_sml: start...\n");
1908
1909 ibmvtpm_node = call_prom("finddevice", 1, 1, ADDR("/vdevice/vtpm"));
1910 prom_debug("ibmvtpm_node: %x\n", ibmvtpm_node);
1911 if (!PHANDLE_VALID(ibmvtpm_node))
1912 return;
1913
1914 ibmvtpm_inst = call_prom("open", 1, 1, ADDR("/vdevice/vtpm"));
1915 if (!IHANDLE_VALID(ibmvtpm_inst)) {
1916 prom_printf("opening vtpm package failed (%x)\n", ibmvtpm_inst);
1917 return;
1918 }
1919
1920 if (prom_getprop(ibmvtpm_node, "ibm,sml-efi-reformat-supported",
1921 &val, sizeof(val)) != PROM_ERROR) {
1922 if (call_prom_ret("call-method", 2, 2, &succ,
1923 ADDR("reformat-sml-to-efi-alignment"),
1924 ibmvtpm_inst) != 0 || succ == 0) {
1925 prom_printf("Reformat SML to EFI alignment failed\n");
1926 return;
1927 }
1928
1929 if (call_prom_ret("call-method", 2, 2, &size,
1930 ADDR("sml-get-allocated-size"),
1931 ibmvtpm_inst) != 0 || size == 0) {
1932 prom_printf("SML get allocated size failed\n");
1933 return;
1934 }
1935 } else {
1936 if (call_prom_ret("call-method", 2, 2, &size,
1937 ADDR("sml-get-handover-size"),
1938 ibmvtpm_inst) != 0 || size == 0) {
1939 prom_printf("SML get handover size failed\n");
1940 return;
1941 }
1942 }
1943
1944 base = alloc_down(size, PAGE_SIZE, 0);
1945 if (base == 0)
1946 prom_panic("Could not allocate memory for sml\n");
1947
1948 prom_printf("instantiating sml at 0x%llx...", base);
1949
1950 memset((void *)base, 0, size);
1951
1952 if (call_prom_ret("call-method", 4, 2, &entry,
1953 ADDR("sml-handover"),
1954 ibmvtpm_inst, size, base) != 0 || entry == 0) {
1955 prom_printf("SML handover failed\n");
1956 return;
1957 }
1958 prom_printf(" done\n");
1959
1960 reserve_mem(base, size);
1961
1962 prom_setprop(ibmvtpm_node, "/vdevice/vtpm", "linux,sml-base",
1963 &base, sizeof(base));
1964 prom_setprop(ibmvtpm_node, "/vdevice/vtpm", "linux,sml-size",
1965 &size, sizeof(size));
1966
1967 prom_debug("sml base = 0x%llx\n", base);
1968 prom_debug("sml size = 0x%x\n", size);
1969
1970 prom_debug("prom_instantiate_sml: end...\n");
1971}
1972
1973
1974
1975
1976#ifdef __BIG_ENDIAN__
1977static void __init prom_initialize_tce_table(void)
1978{
1979 phandle node;
1980 ihandle phb_node;
1981 char compatible[64], type[64], model[64];
1982 char *path = prom_scratch;
1983 u64 base, align;
1984 u32 minalign, minsize;
1985 u64 tce_entry, *tce_entryp;
1986 u64 local_alloc_top, local_alloc_bottom;
1987 u64 i;
1988
1989 if (prom_iommu_off)
1990 return;
1991
1992 prom_debug("starting prom_initialize_tce_table\n");
1993
1994
1995 local_alloc_top = alloc_top_high;
1996 local_alloc_bottom = local_alloc_top;
1997
1998
1999 for (node = 0; prom_next_node(&node); ) {
2000 compatible[0] = 0;
2001 type[0] = 0;
2002 model[0] = 0;
2003 prom_getprop(node, "compatible",
2004 compatible, sizeof(compatible));
2005 prom_getprop(node, "device_type", type, sizeof(type));
2006 prom_getprop(node, "model", model, sizeof(model));
2007
2008 if ((type[0] == 0) || (prom_strstr(type, "pci") == NULL))
2009 continue;
2010
2011
2012 if (compatible[0] != 0) {
2013 if ((prom_strstr(compatible, "python") == NULL) &&
2014 (prom_strstr(compatible, "Speedwagon") == NULL) &&
2015 (prom_strstr(compatible, "Winnipeg") == NULL))
2016 continue;
2017 } else if (model[0] != 0) {
2018 if ((prom_strstr(model, "ython") == NULL) &&
2019 (prom_strstr(model, "peedwagon") == NULL) &&
2020 (prom_strstr(model, "innipeg") == NULL))
2021 continue;
2022 }
2023
2024 if (prom_getprop(node, "tce-table-minalign", &minalign,
2025 sizeof(minalign)) == PROM_ERROR)
2026 minalign = 0;
2027 if (prom_getprop(node, "tce-table-minsize", &minsize,
2028 sizeof(minsize)) == PROM_ERROR)
2029 minsize = 4UL << 20;
2030
2031
2032
2033
2034
2035
2036
2037 minsize = 4UL << 20;
2038
2039
2040 align = max(minalign, minsize);
2041 base = alloc_down(minsize, align, 1);
2042 if (base == 0)
2043 prom_panic("ERROR, cannot find space for TCE table.\n");
2044 if (base < local_alloc_bottom)
2045 local_alloc_bottom = base;
2046
2047
2048 memset(path, 0, sizeof(prom_scratch));
2049
2050 if (call_prom("package-to-path", 3, 1, node,
2051 path, sizeof(prom_scratch) - 1) == PROM_ERROR) {
2052 prom_printf("package-to-path failed\n");
2053 }
2054
2055
2056 prom_setprop(node, path, "linux,tce-base", &base, sizeof(base));
2057 prom_setprop(node, path, "linux,tce-size", &minsize, sizeof(minsize));
2058
2059 prom_debug("TCE table: %s\n", path);
2060 prom_debug("\tnode = 0x%x\n", node);
2061 prom_debug("\tbase = 0x%llx\n", base);
2062 prom_debug("\tsize = 0x%x\n", minsize);
2063
2064
2065
2066
2067 tce_entryp = (u64 *)base;
2068 for (i = 0; i < (minsize >> 3) ;tce_entryp++, i++) {
2069 tce_entry = (i << PAGE_SHIFT);
2070 tce_entry |= 0x3;
2071 *tce_entryp = tce_entry;
2072 }
2073
2074 prom_printf("opening PHB %s", path);
2075 phb_node = call_prom("open", 1, 1, path);
2076 if (phb_node == 0)
2077 prom_printf("... failed\n");
2078 else
2079 prom_printf("... done\n");
2080
2081 call_prom("call-method", 6, 0, ADDR("set-64-bit-addressing"),
2082 phb_node, -1, minsize,
2083 (u32) base, (u32) (base >> 32));
2084 call_prom("close", 1, 0, phb_node);
2085 }
2086
2087 reserve_mem(local_alloc_bottom, local_alloc_top - local_alloc_bottom);
2088
2089
2090
2091 prom_tce_alloc_start = local_alloc_bottom;
2092 prom_tce_alloc_end = local_alloc_top;
2093
2094
2095 prom_debug("ending prom_initialize_tce_table\n");
2096}
2097#endif
2098#endif
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122#define LOW_ADDR(x) (((unsigned long) &(x)) & 0xff)
2123
2124static void __init prom_hold_cpus(void)
2125{
2126 unsigned long i;
2127 phandle node;
2128 char type[64];
2129 unsigned long *spinloop
2130 = (void *) LOW_ADDR(__secondary_hold_spinloop);
2131 unsigned long *acknowledge
2132 = (void *) LOW_ADDR(__secondary_hold_acknowledge);
2133 unsigned long secondary_hold = LOW_ADDR(__secondary_hold);
2134
2135
2136
2137
2138
2139
2140 if ((of_platform == PLATFORM_PSERIES ||
2141 of_platform == PLATFORM_PSERIES_LPAR) &&
2142 rtas_has_query_cpu_stopped) {
2143 prom_printf("prom_hold_cpus: skipped\n");
2144 return;
2145 }
2146
2147 prom_debug("prom_hold_cpus: start...\n");
2148 prom_debug(" 1) spinloop = 0x%lx\n", (unsigned long)spinloop);
2149 prom_debug(" 1) *spinloop = 0x%lx\n", *spinloop);
2150 prom_debug(" 1) acknowledge = 0x%lx\n",
2151 (unsigned long)acknowledge);
2152 prom_debug(" 1) *acknowledge = 0x%lx\n", *acknowledge);
2153 prom_debug(" 1) secondary_hold = 0x%lx\n", secondary_hold);
2154
2155
2156
2157
2158
2159
2160 *spinloop = 0;
2161
2162
2163 for (node = 0; prom_next_node(&node); ) {
2164 unsigned int cpu_no;
2165 __be32 reg;
2166
2167 type[0] = 0;
2168 prom_getprop(node, "device_type", type, sizeof(type));
2169 if (prom_strcmp(type, "cpu") != 0)
2170 continue;
2171
2172
2173 if (prom_getprop(node, "status", type, sizeof(type)) > 0)
2174 if (prom_strcmp(type, "okay") != 0)
2175 continue;
2176
2177 reg = cpu_to_be32(-1);
2178 prom_getprop(node, "reg", ®, sizeof(reg));
2179 cpu_no = be32_to_cpu(reg);
2180
2181 prom_debug("cpu hw idx = %u\n", cpu_no);
2182
2183
2184
2185
2186
2187 *acknowledge = (unsigned long)-1;
2188
2189 if (cpu_no != prom.cpu) {
2190
2191 prom_printf("starting cpu hw idx %u... ", cpu_no);
2192 call_prom("start-cpu", 3, 0, node,
2193 secondary_hold, cpu_no);
2194
2195 for (i = 0; (i < 100000000) &&
2196 (*acknowledge == ((unsigned long)-1)); i++ )
2197 mb();
2198
2199 if (*acknowledge == cpu_no)
2200 prom_printf("done\n");
2201 else
2202 prom_printf("failed: %lx\n", *acknowledge);
2203 }
2204#ifdef CONFIG_SMP
2205 else
2206 prom_printf("boot cpu hw idx %u\n", cpu_no);
2207#endif
2208 }
2209
2210 prom_debug("prom_hold_cpus: end...\n");
2211}
2212
2213
2214static void __init prom_init_client_services(unsigned long pp)
2215{
2216
2217 prom_entry = pp;
2218
2219
2220 prom.chosen = call_prom("finddevice", 1, 1, ADDR("/chosen"));
2221 if (!PHANDLE_VALID(prom.chosen))
2222 prom_panic("cannot find chosen");
2223
2224
2225 prom.root = call_prom("finddevice", 1, 1, ADDR("/"));
2226 if (!PHANDLE_VALID(prom.root))
2227 prom_panic("cannot find device tree root");
2228
2229 prom.mmumap = 0;
2230}
2231
2232#ifdef CONFIG_PPC32
2233
2234
2235
2236
2237
2238static void __init prom_find_mmu(void)
2239{
2240 phandle oprom;
2241 char version[64];
2242
2243 oprom = call_prom("finddevice", 1, 1, ADDR("/openprom"));
2244 if (!PHANDLE_VALID(oprom))
2245 return;
2246 if (prom_getprop(oprom, "model", version, sizeof(version)) <= 0)
2247 return;
2248 version[sizeof(version) - 1] = 0;
2249
2250 if (prom_strcmp(version, "Open Firmware, 1.0.5") == 0)
2251 of_workarounds = OF_WA_CLAIM;
2252 else if (prom_strncmp(version, "FirmWorks,3.", 12) == 0) {
2253 of_workarounds = OF_WA_CLAIM | OF_WA_LONGTRAIL;
2254 call_prom("interpret", 1, 1, "dev /memory 0 to allow-reclaim");
2255 } else
2256 return;
2257 prom.memory = call_prom("open", 1, 1, ADDR("/memory"));
2258 prom_getprop(prom.chosen, "mmu", &prom.mmumap,
2259 sizeof(prom.mmumap));
2260 prom.mmumap = be32_to_cpu(prom.mmumap);
2261 if (!IHANDLE_VALID(prom.memory) || !IHANDLE_VALID(prom.mmumap))
2262 of_workarounds &= ~OF_WA_CLAIM;
2263}
2264#else
2265#define prom_find_mmu()
2266#endif
2267
2268static void __init prom_init_stdout(void)
2269{
2270 char *path = of_stdout_device;
2271 char type[16];
2272 phandle stdout_node;
2273 __be32 val;
2274
2275 if (prom_getprop(prom.chosen, "stdout", &val, sizeof(val)) <= 0)
2276 prom_panic("cannot find stdout");
2277
2278 prom.stdout = be32_to_cpu(val);
2279
2280
2281 memset(path, 0, 256);
2282 call_prom("instance-to-path", 3, 1, prom.stdout, path, 255);
2283 prom_printf("OF stdout device is: %s\n", of_stdout_device);
2284 prom_setprop(prom.chosen, "/chosen", "linux,stdout-path",
2285 path, prom_strlen(path) + 1);
2286
2287
2288 stdout_node = call_prom("instance-to-package", 1, 1, prom.stdout);
2289 if (stdout_node != PROM_ERROR) {
2290 val = cpu_to_be32(stdout_node);
2291
2292
2293 memset(type, 0, sizeof(type));
2294 prom_getprop(stdout_node, "device_type", type, sizeof(type));
2295 if (prom_strcmp(type, "display") == 0)
2296 prom_setprop(stdout_node, path, "linux,boot-display", NULL, 0);
2297 }
2298}
2299
2300static int __init prom_find_machine_type(void)
2301{
2302 char compat[256];
2303 int len, i = 0;
2304#ifdef CONFIG_PPC64
2305 phandle rtas;
2306 int x;
2307#endif
2308
2309
2310 len = prom_getprop(prom.root, "compatible",
2311 compat, sizeof(compat)-1);
2312 if (len > 0) {
2313 compat[len] = 0;
2314 while (i < len) {
2315 char *p = &compat[i];
2316 int sl = prom_strlen(p);
2317 if (sl == 0)
2318 break;
2319 if (prom_strstr(p, "Power Macintosh") ||
2320 prom_strstr(p, "MacRISC"))
2321 return PLATFORM_POWERMAC;
2322#ifdef CONFIG_PPC64
2323
2324
2325
2326
2327 if (prom_strstr(p, "IBM,CBEA") ||
2328 prom_strstr(p, "IBM,CPBW-1.0"))
2329 return PLATFORM_GENERIC;
2330#endif
2331 i += sl + 1;
2332 }
2333 }
2334#ifdef CONFIG_PPC64
2335
2336
2337
2338
2339
2340
2341 len = prom_getprop(prom.root, "device_type",
2342 compat, sizeof(compat)-1);
2343 if (len <= 0)
2344 return PLATFORM_GENERIC;
2345 if (prom_strcmp(compat, "chrp"))
2346 return PLATFORM_GENERIC;
2347
2348
2349 rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
2350 if (!PHANDLE_VALID(rtas))
2351 return PLATFORM_GENERIC;
2352 x = prom_getproplen(rtas, "ibm,hypertas-functions");
2353 if (x != PROM_ERROR) {
2354 prom_debug("Hypertas detected, assuming LPAR !\n");
2355 return PLATFORM_PSERIES_LPAR;
2356 }
2357 return PLATFORM_PSERIES;
2358#else
2359 return PLATFORM_GENERIC;
2360#endif
2361}
2362
2363static int __init prom_set_color(ihandle ih, int i, int r, int g, int b)
2364{
2365 return call_prom("call-method", 6, 1, ADDR("color!"), ih, i, b, g, r);
2366}
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376static void __init prom_check_displays(void)
2377{
2378 char type[16], *path;
2379 phandle node;
2380 ihandle ih;
2381 int i;
2382
2383 static const unsigned char default_colors[] __initconst = {
2384 0x00, 0x00, 0x00,
2385 0x00, 0x00, 0xaa,
2386 0x00, 0xaa, 0x00,
2387 0x00, 0xaa, 0xaa,
2388 0xaa, 0x00, 0x00,
2389 0xaa, 0x00, 0xaa,
2390 0xaa, 0xaa, 0x00,
2391 0xaa, 0xaa, 0xaa,
2392 0x55, 0x55, 0x55,
2393 0x55, 0x55, 0xff,
2394 0x55, 0xff, 0x55,
2395 0x55, 0xff, 0xff,
2396 0xff, 0x55, 0x55,
2397 0xff, 0x55, 0xff,
2398 0xff, 0xff, 0x55,
2399 0xff, 0xff, 0xff
2400 };
2401 const unsigned char *clut;
2402
2403 prom_debug("Looking for displays\n");
2404 for (node = 0; prom_next_node(&node); ) {
2405 memset(type, 0, sizeof(type));
2406 prom_getprop(node, "device_type", type, sizeof(type));
2407 if (prom_strcmp(type, "display") != 0)
2408 continue;
2409
2410
2411 path = prom_scratch;
2412 memset(path, 0, sizeof(prom_scratch));
2413
2414
2415
2416
2417
2418 if (call_prom("package-to-path", 3, 1, node, path,
2419 sizeof(prom_scratch) - 10) == PROM_ERROR)
2420 continue;
2421 prom_printf("found display : %s, opening... ", path);
2422
2423 ih = call_prom("open", 1, 1, path);
2424 if (ih == 0) {
2425 prom_printf("failed\n");
2426 continue;
2427 }
2428
2429
2430 prom_printf("done\n");
2431 prom_setprop(node, path, "linux,opened", NULL, 0);
2432
2433
2434
2435 clut = default_colors;
2436 for (i = 0; i < 16; i++, clut += 3)
2437 if (prom_set_color(ih, i, clut[0], clut[1],
2438 clut[2]) != 0)
2439 break;
2440
2441#ifdef CONFIG_LOGO_LINUX_CLUT224
2442 clut = PTRRELOC(logo_linux_clut224.clut);
2443 for (i = 0; i < logo_linux_clut224.clutsize; i++, clut += 3)
2444 if (prom_set_color(ih, i + 32, clut[0], clut[1],
2445 clut[2]) != 0)
2446 break;
2447#endif
2448
2449#ifdef CONFIG_PPC_EARLY_DEBUG_BOOTX
2450 if (prom_getprop(node, "linux,boot-display", NULL, 0) !=
2451 PROM_ERROR) {
2452 u32 width, height, pitch, addr;
2453
2454 prom_printf("Setting btext !\n");
2455
2456 if (prom_getprop(node, "width", &width, 4) == PROM_ERROR)
2457 return;
2458
2459 if (prom_getprop(node, "height", &height, 4) == PROM_ERROR)
2460 return;
2461
2462 if (prom_getprop(node, "linebytes", &pitch, 4) == PROM_ERROR)
2463 return;
2464
2465 if (prom_getprop(node, "address", &addr, 4) == PROM_ERROR)
2466 return;
2467
2468 prom_printf("W=%d H=%d LB=%d addr=0x%x\n",
2469 width, height, pitch, addr);
2470 btext_setup_display(width, height, 8, pitch, addr);
2471 btext_prepare_BAT();
2472 }
2473#endif
2474 }
2475}
2476
2477
2478
2479static void __init *make_room(unsigned long *mem_start, unsigned long *mem_end,
2480 unsigned long needed, unsigned long align)
2481{
2482 void *ret;
2483
2484 *mem_start = ALIGN(*mem_start, align);
2485 while ((*mem_start + needed) > *mem_end) {
2486 unsigned long room, chunk;
2487
2488 prom_debug("Chunk exhausted, claiming more at %lx...\n",
2489 alloc_bottom);
2490 room = alloc_top - alloc_bottom;
2491 if (room > DEVTREE_CHUNK_SIZE)
2492 room = DEVTREE_CHUNK_SIZE;
2493 if (room < PAGE_SIZE)
2494 prom_panic("No memory for flatten_device_tree "
2495 "(no room)\n");
2496 chunk = alloc_up(room, 0);
2497 if (chunk == 0)
2498 prom_panic("No memory for flatten_device_tree "
2499 "(claim failed)\n");
2500 *mem_end = chunk + room;
2501 }
2502
2503 ret = (void *)*mem_start;
2504 *mem_start += needed;
2505
2506 return ret;
2507}
2508
2509#define dt_push_token(token, mem_start, mem_end) do { \
2510 void *room = make_room(mem_start, mem_end, 4, 4); \
2511 *(__be32 *)room = cpu_to_be32(token); \
2512 } while(0)
2513
2514static unsigned long __init dt_find_string(char *str)
2515{
2516 char *s, *os;
2517
2518 s = os = (char *)dt_string_start;
2519 s += 4;
2520 while (s < (char *)dt_string_end) {
2521 if (prom_strcmp(s, str) == 0)
2522 return s - os;
2523 s += prom_strlen(s) + 1;
2524 }
2525 return 0;
2526}
2527
2528
2529
2530
2531
2532#define MAX_PROPERTY_NAME 64
2533
2534static void __init scan_dt_build_strings(phandle node,
2535 unsigned long *mem_start,
2536 unsigned long *mem_end)
2537{
2538 char *prev_name, *namep, *sstart;
2539 unsigned long soff;
2540 phandle child;
2541
2542 sstart = (char *)dt_string_start;
2543
2544
2545 prev_name = "";
2546 for (;;) {
2547
2548 namep = make_room(mem_start, mem_end, MAX_PROPERTY_NAME, 1);
2549 if (call_prom("nextprop", 3, 1, node, prev_name, namep) != 1) {
2550
2551 *mem_start = (unsigned long)namep;
2552 break;
2553 }
2554
2555
2556 if (prom_strcmp(namep, "name") == 0) {
2557 *mem_start = (unsigned long)namep;
2558 prev_name = "name";
2559 continue;
2560 }
2561
2562 soff = dt_find_string(namep);
2563 if (soff != 0) {
2564 *mem_start = (unsigned long)namep;
2565 namep = sstart + soff;
2566 } else {
2567
2568 *mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
2569 dt_string_end = *mem_start;
2570 }
2571 prev_name = namep;
2572 }
2573
2574
2575 child = call_prom("child", 1, 1, node);
2576 while (child != 0) {
2577 scan_dt_build_strings(child, mem_start, mem_end);
2578 child = call_prom("peer", 1, 1, child);
2579 }
2580}
2581
2582static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
2583 unsigned long *mem_end)
2584{
2585 phandle child;
2586 char *namep, *prev_name, *sstart, *p, *ep, *lp, *path;
2587 unsigned long soff;
2588 unsigned char *valp;
2589 static char pname[MAX_PROPERTY_NAME] __prombss;
2590 int l, room, has_phandle = 0;
2591
2592 dt_push_token(OF_DT_BEGIN_NODE, mem_start, mem_end);
2593
2594
2595 namep = (char *)*mem_start;
2596 room = *mem_end - *mem_start;
2597 if (room > 255)
2598 room = 255;
2599 l = call_prom("package-to-path", 3, 1, node, namep, room);
2600 if (l >= 0) {
2601
2602 if (l >= room) {
2603 if (l >= *mem_end - *mem_start)
2604 namep = make_room(mem_start, mem_end, l+1, 1);
2605 call_prom("package-to-path", 3, 1, node, namep, l);
2606 }
2607 namep[l] = '\0';
2608
2609
2610
2611
2612
2613 for (lp = p = namep, ep = namep + l; p < ep; p++) {
2614 if (*p == '/')
2615 lp = namep;
2616 else if (*p != 0)
2617 *lp++ = *p;
2618 }
2619 *lp = 0;
2620 *mem_start = ALIGN((unsigned long)lp + 1, 4);
2621 }
2622
2623
2624 path = prom_scratch;
2625 memset(path, 0, sizeof(prom_scratch));
2626 call_prom("package-to-path", 3, 1, node, path, sizeof(prom_scratch) - 1);
2627
2628
2629 prev_name = "";
2630 sstart = (char *)dt_string_start;
2631 for (;;) {
2632 if (call_prom("nextprop", 3, 1, node, prev_name,
2633 pname) != 1)
2634 break;
2635
2636
2637 if (prom_strcmp(pname, "name") == 0) {
2638 prev_name = "name";
2639 continue;
2640 }
2641
2642
2643 soff = dt_find_string(pname);
2644 if (soff == 0) {
2645 prom_printf("WARNING: Can't find string index for"
2646 " <%s>, node %s\n", pname, path);
2647 break;
2648 }
2649 prev_name = sstart + soff;
2650
2651
2652 l = call_prom("getproplen", 2, 1, node, pname);
2653
2654
2655 if (l == PROM_ERROR)
2656 continue;
2657
2658
2659 dt_push_token(OF_DT_PROP, mem_start, mem_end);
2660 dt_push_token(l, mem_start, mem_end);
2661 dt_push_token(soff, mem_start, mem_end);
2662
2663
2664 valp = make_room(mem_start, mem_end, l, 4);
2665 call_prom("getprop", 4, 1, node, pname, valp, l);
2666 *mem_start = ALIGN(*mem_start, 4);
2667
2668 if (!prom_strcmp(pname, "phandle"))
2669 has_phandle = 1;
2670 }
2671
2672
2673 if (!has_phandle) {
2674 soff = dt_find_string("phandle");
2675 if (soff == 0)
2676 prom_printf("WARNING: Can't find string index for <phandle> node %s\n", path);
2677 else {
2678 dt_push_token(OF_DT_PROP, mem_start, mem_end);
2679 dt_push_token(4, mem_start, mem_end);
2680 dt_push_token(soff, mem_start, mem_end);
2681 valp = make_room(mem_start, mem_end, 4, 4);
2682 *(__be32 *)valp = cpu_to_be32(node);
2683 }
2684 }
2685
2686
2687 child = call_prom("child", 1, 1, node);
2688 while (child != 0) {
2689 scan_dt_build_struct(child, mem_start, mem_end);
2690 child = call_prom("peer", 1, 1, child);
2691 }
2692
2693 dt_push_token(OF_DT_END_NODE, mem_start, mem_end);
2694}
2695
2696static void __init flatten_device_tree(void)
2697{
2698 phandle root;
2699 unsigned long mem_start, mem_end, room;
2700 struct boot_param_header *hdr;
2701 char *namep;
2702 u64 *rsvmap;
2703
2704
2705
2706
2707
2708 room = alloc_top - alloc_bottom - 0x4000;
2709 if (room > DEVTREE_CHUNK_SIZE)
2710 room = DEVTREE_CHUNK_SIZE;
2711 prom_debug("starting device tree allocs at %lx\n", alloc_bottom);
2712
2713
2714 mem_start = (unsigned long)alloc_up(room, PAGE_SIZE);
2715 if (mem_start == 0)
2716 prom_panic("Can't allocate initial device-tree chunk\n");
2717 mem_end = mem_start + room;
2718
2719
2720 root = call_prom("peer", 1, 1, (phandle)0);
2721 if (root == (phandle)0)
2722 prom_panic ("couldn't get device tree root\n");
2723
2724
2725 mem_start = ALIGN(mem_start, 4);
2726 hdr = make_room(&mem_start, &mem_end,
2727 sizeof(struct boot_param_header), 4);
2728 dt_header_start = (unsigned long)hdr;
2729 rsvmap = make_room(&mem_start, &mem_end, sizeof(mem_reserve_map), 8);
2730
2731
2732 mem_start = PAGE_ALIGN(mem_start);
2733 dt_string_start = mem_start;
2734 mem_start += 4;
2735
2736
2737 namep = make_room(&mem_start, &mem_end, 16, 1);
2738 prom_strscpy_pad(namep, "phandle", sizeof("phandle"));
2739 mem_start = (unsigned long)namep + prom_strlen(namep) + 1;
2740
2741
2742 prom_printf("Building dt strings...\n");
2743 scan_dt_build_strings(root, &mem_start, &mem_end);
2744 dt_string_end = mem_start;
2745
2746
2747 mem_start = PAGE_ALIGN(mem_start);
2748 dt_struct_start = mem_start;
2749 prom_printf("Building dt structure...\n");
2750 scan_dt_build_struct(root, &mem_start, &mem_end);
2751 dt_push_token(OF_DT_END, &mem_start, &mem_end);
2752 dt_struct_end = PAGE_ALIGN(mem_start);
2753
2754
2755 hdr->boot_cpuid_phys = cpu_to_be32(prom.cpu);
2756 hdr->magic = cpu_to_be32(OF_DT_HEADER);
2757 hdr->totalsize = cpu_to_be32(dt_struct_end - dt_header_start);
2758 hdr->off_dt_struct = cpu_to_be32(dt_struct_start - dt_header_start);
2759 hdr->off_dt_strings = cpu_to_be32(dt_string_start - dt_header_start);
2760 hdr->dt_strings_size = cpu_to_be32(dt_string_end - dt_string_start);
2761 hdr->off_mem_rsvmap = cpu_to_be32(((unsigned long)rsvmap) - dt_header_start);
2762 hdr->version = cpu_to_be32(OF_DT_VERSION);
2763
2764 hdr->last_comp_version = cpu_to_be32(0x10);
2765
2766
2767 memcpy(rsvmap, mem_reserve_map, sizeof(mem_reserve_map));
2768
2769#ifdef DEBUG_PROM
2770 {
2771 int i;
2772 prom_printf("reserved memory map:\n");
2773 for (i = 0; i < mem_reserve_cnt; i++)
2774 prom_printf(" %llx - %llx\n",
2775 be64_to_cpu(mem_reserve_map[i].base),
2776 be64_to_cpu(mem_reserve_map[i].size));
2777 }
2778#endif
2779
2780
2781
2782 mem_reserve_cnt = MEM_RESERVE_MAP_SIZE;
2783
2784 prom_printf("Device tree strings 0x%lx -> 0x%lx\n",
2785 dt_string_start, dt_string_end);
2786 prom_printf("Device tree struct 0x%lx -> 0x%lx\n",
2787 dt_struct_start, dt_struct_end);
2788}
2789
2790#ifdef CONFIG_PPC_MAPLE
2791
2792
2793static void __init fixup_device_tree_maple(void)
2794{
2795 phandle isa;
2796 u32 rloc = 0x01002000;
2797 u32 isa_ranges[6];
2798 char *name;
2799
2800 name = "/ht@0/isa@4";
2801 isa = call_prom("finddevice", 1, 1, ADDR(name));
2802 if (!PHANDLE_VALID(isa)) {
2803 name = "/ht@0/isa@6";
2804 isa = call_prom("finddevice", 1, 1, ADDR(name));
2805 rloc = 0x01003000;
2806 }
2807 if (!PHANDLE_VALID(isa))
2808 return;
2809
2810 if (prom_getproplen(isa, "ranges") != 12)
2811 return;
2812 if (prom_getprop(isa, "ranges", isa_ranges, sizeof(isa_ranges))
2813 == PROM_ERROR)
2814 return;
2815
2816 if (isa_ranges[0] != 0x1 ||
2817 isa_ranges[1] != 0xf4000000 ||
2818 isa_ranges[2] != 0x00010000)
2819 return;
2820
2821 prom_printf("Fixing up bogus ISA range on Maple/Apache...\n");
2822
2823 isa_ranges[0] = 0x1;
2824 isa_ranges[1] = 0x0;
2825 isa_ranges[2] = rloc;
2826 isa_ranges[3] = 0x0;
2827 isa_ranges[4] = 0x0;
2828 isa_ranges[5] = 0x00010000;
2829 prom_setprop(isa, name, "ranges",
2830 isa_ranges, sizeof(isa_ranges));
2831}
2832
2833#define CPC925_MC_START 0xf8000000
2834#define CPC925_MC_LENGTH 0x1000000
2835
2836static void __init fixup_device_tree_maple_memory_controller(void)
2837{
2838 phandle mc;
2839 u32 mc_reg[4];
2840 char *name = "/hostbridge@f8000000";
2841 u32 ac, sc;
2842
2843 mc = call_prom("finddevice", 1, 1, ADDR(name));
2844 if (!PHANDLE_VALID(mc))
2845 return;
2846
2847 if (prom_getproplen(mc, "reg") != 8)
2848 return;
2849
2850 prom_getprop(prom.root, "#address-cells", &ac, sizeof(ac));
2851 prom_getprop(prom.root, "#size-cells", &sc, sizeof(sc));
2852 if ((ac != 2) || (sc != 2))
2853 return;
2854
2855 if (prom_getprop(mc, "reg", mc_reg, sizeof(mc_reg)) == PROM_ERROR)
2856 return;
2857
2858 if (mc_reg[0] != CPC925_MC_START || mc_reg[1] != CPC925_MC_LENGTH)
2859 return;
2860
2861 prom_printf("Fixing up bogus hostbridge on Maple...\n");
2862
2863 mc_reg[0] = 0x0;
2864 mc_reg[1] = CPC925_MC_START;
2865 mc_reg[2] = 0x0;
2866 mc_reg[3] = CPC925_MC_LENGTH;
2867 prom_setprop(mc, name, "reg", mc_reg, sizeof(mc_reg));
2868}
2869#else
2870#define fixup_device_tree_maple()
2871#define fixup_device_tree_maple_memory_controller()
2872#endif
2873
2874#ifdef CONFIG_PPC_CHRP
2875
2876
2877
2878
2879
2880static void __init fixup_device_tree_chrp(void)
2881{
2882 phandle ph;
2883 u32 prop[6];
2884 u32 rloc = 0x01006000;
2885 char *name;
2886 int rc;
2887
2888 name = "/pci@80000000/isa@c";
2889 ph = call_prom("finddevice", 1, 1, ADDR(name));
2890 if (!PHANDLE_VALID(ph)) {
2891 name = "/pci@ff500000/isa@6";
2892 ph = call_prom("finddevice", 1, 1, ADDR(name));
2893 rloc = 0x01003000;
2894 }
2895 if (PHANDLE_VALID(ph)) {
2896 rc = prom_getproplen(ph, "ranges");
2897 if (rc == 0 || rc == PROM_ERROR) {
2898 prom_printf("Fixing up missing ISA range on Pegasos...\n");
2899
2900 prop[0] = 0x1;
2901 prop[1] = 0x0;
2902 prop[2] = rloc;
2903 prop[3] = 0x0;
2904 prop[4] = 0x0;
2905 prop[5] = 0x00010000;
2906 prom_setprop(ph, name, "ranges", prop, sizeof(prop));
2907 }
2908 }
2909
2910 name = "/pci@80000000/ide@C,1";
2911 ph = call_prom("finddevice", 1, 1, ADDR(name));
2912 if (PHANDLE_VALID(ph)) {
2913 prom_printf("Fixing up IDE interrupt on Pegasos...\n");
2914 prop[0] = 14;
2915 prop[1] = 0x0;
2916 prom_setprop(ph, name, "interrupts", prop, 2*sizeof(u32));
2917 prom_printf("Fixing up IDE class-code on Pegasos...\n");
2918 rc = prom_getprop(ph, "class-code", prop, sizeof(u32));
2919 if (rc == sizeof(u32)) {
2920 prop[0] &= ~0x5;
2921 prom_setprop(ph, name, "class-code", prop, sizeof(u32));
2922 }
2923 }
2924}
2925#else
2926#define fixup_device_tree_chrp()
2927#endif
2928
2929#if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC)
2930static void __init fixup_device_tree_pmac(void)
2931{
2932 phandle u3, i2c, mpic;
2933 u32 u3_rev;
2934 u32 interrupts[2];
2935 u32 parent;
2936
2937
2938 u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000"));
2939 if (!PHANDLE_VALID(u3))
2940 return;
2941 i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000"));
2942 if (!PHANDLE_VALID(i2c))
2943 return;
2944 mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000"));
2945 if (!PHANDLE_VALID(mpic))
2946 return;
2947
2948
2949 if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev))
2950 == PROM_ERROR)
2951 return;
2952 if (u3_rev < 0x35 || u3_rev > 0x39)
2953 return;
2954
2955 if (prom_getproplen(i2c, "interrupts") > 0)
2956 return;
2957
2958 prom_printf("fixing up bogus interrupts for u3 i2c...\n");
2959
2960
2961 interrupts[0] = 0;
2962 interrupts[1] = 1;
2963 prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupts",
2964 &interrupts, sizeof(interrupts));
2965 parent = (u32)mpic;
2966 prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupt-parent",
2967 &parent, sizeof(parent));
2968}
2969#else
2970#define fixup_device_tree_pmac()
2971#endif
2972
2973#ifdef CONFIG_PPC_EFIKA
2974
2975
2976
2977
2978
2979
2980static void __init fixup_device_tree_efika_add_phy(void)
2981{
2982 u32 node;
2983 char prop[64];
2984 int rv;
2985
2986
2987 node = call_prom("finddevice", 1, 1, ADDR("/builtin/ethernet"));
2988 if (!PHANDLE_VALID(node))
2989 return;
2990
2991
2992 rv = prom_getprop(node, "phy-handle", prop, sizeof(prop));
2993 if (!rv)
2994 return;
2995
2996
2997
2998
2999
3000
3001
3002 node = call_prom("finddevice", 1, 1, ADDR("/builtin/mdio"));
3003 if (!PHANDLE_VALID(node)) {
3004 prom_printf("Adding Ethernet MDIO node\n");
3005 call_prom("interpret", 1, 1,
3006 " s\" /builtin\" find-device"
3007 " new-device"
3008 " 1 encode-int s\" #address-cells\" property"
3009 " 0 encode-int s\" #size-cells\" property"
3010 " s\" mdio\" device-name"
3011 " s\" fsl,mpc5200b-mdio\" encode-string"
3012 " s\" compatible\" property"
3013 " 0xf0003000 0x400 reg"
3014 " 0x2 encode-int"
3015 " 0x5 encode-int encode+"
3016 " 0x3 encode-int encode+"
3017 " s\" interrupts\" property"
3018 " finish-device");
3019 }
3020
3021
3022
3023 node = call_prom("finddevice", 1, 1,
3024 ADDR("/builtin/mdio/ethernet-phy"));
3025 if (!PHANDLE_VALID(node)) {
3026 prom_printf("Adding Ethernet PHY node\n");
3027 call_prom("interpret", 1, 1,
3028 " s\" /builtin/mdio\" find-device"
3029 " new-device"
3030 " s\" ethernet-phy\" device-name"
3031 " 0x10 encode-int s\" reg\" property"
3032 " my-self"
3033 " ihandle>phandle"
3034 " finish-device"
3035 " s\" /builtin/ethernet\" find-device"
3036 " encode-int"
3037 " s\" phy-handle\" property"
3038 " device-end");
3039 }
3040}
3041
3042static void __init fixup_device_tree_efika(void)
3043{
3044 int sound_irq[3] = { 2, 2, 0 };
3045 int bcomm_irq[3*16] = { 3,0,0, 3,1,0, 3,2,0, 3,3,0,
3046 3,4,0, 3,5,0, 3,6,0, 3,7,0,
3047 3,8,0, 3,9,0, 3,10,0, 3,11,0,
3048 3,12,0, 3,13,0, 3,14,0, 3,15,0 };
3049 u32 node;
3050 char prop[64];
3051 int rv, len;
3052
3053
3054 node = call_prom("finddevice", 1, 1, ADDR("/"));
3055 if (!PHANDLE_VALID(node))
3056 return;
3057
3058 rv = prom_getprop(node, "model", prop, sizeof(prop));
3059 if (rv == PROM_ERROR)
3060 return;
3061 if (prom_strcmp(prop, "EFIKA5K2"))
3062 return;
3063
3064 prom_printf("Applying EFIKA device tree fixups\n");
3065
3066
3067 node = call_prom("finddevice", 1, 1, ADDR("/"));
3068 rv = prom_getprop(node, "device_type", prop, sizeof(prop));
3069 if (rv != PROM_ERROR && (prom_strcmp(prop, "chrp") == 0))
3070 prom_setprop(node, "/", "device_type", "efika", sizeof("efika"));
3071
3072
3073
3074 rv = prom_getprop(node, "CODEGEN,description", prop, sizeof(prop));
3075 if (rv != PROM_ERROR && (prom_strstr(prop, "CHRP")))
3076 prom_setprop(node, "/", "CODEGEN,description",
3077 "Efika 5200B PowerPC System",
3078 sizeof("Efika 5200B PowerPC System"));
3079
3080
3081 node = call_prom("finddevice", 1, 1, ADDR("/builtin/bestcomm"));
3082 if (PHANDLE_VALID(node)) {
3083 len = prom_getproplen(node, "interrupts");
3084 if (len == 12) {
3085 prom_printf("Fixing bestcomm interrupts property\n");
3086 prom_setprop(node, "/builtin/bestcom", "interrupts",
3087 bcomm_irq, sizeof(bcomm_irq));
3088 }
3089 }
3090
3091
3092 node = call_prom("finddevice", 1, 1, ADDR("/builtin/sound"));
3093 if (PHANDLE_VALID(node)) {
3094 rv = prom_getprop(node, "interrupts", prop, sizeof(prop));
3095 if (rv == PROM_ERROR) {
3096 prom_printf("Adding sound interrupts property\n");
3097 prom_setprop(node, "/builtin/sound", "interrupts",
3098 sound_irq, sizeof(sound_irq));
3099 }
3100 }
3101
3102
3103 fixup_device_tree_efika_add_phy();
3104}
3105#else
3106#define fixup_device_tree_efika()
3107#endif
3108
3109#ifdef CONFIG_PPC_PASEMI_NEMO
3110
3111
3112
3113
3114
3115
3116static void __init fixup_device_tree_pasemi(void)
3117{
3118 u32 interrupts[2], parent, rval, val = 0;
3119 char *name, *pci_name;
3120 phandle iob, node;
3121
3122
3123 name = "/pxp@0,e0000000";
3124 iob = call_prom("finddevice", 1, 1, ADDR(name));
3125 if (!PHANDLE_VALID(iob))
3126 return;
3127
3128
3129 if (prom_getproplen(iob, "interrupt-controller") !=PROM_ERROR)
3130 return;
3131
3132 prom_printf("adding interrupt-controller property for SB600...\n");
3133
3134 prom_setprop(iob, name, "interrupt-controller", &val, 0);
3135
3136 pci_name = "/pxp@0,e0000000/pci@11";
3137 node = call_prom("finddevice", 1, 1, ADDR(pci_name));
3138 parent = ADDR(iob);
3139
3140 for( ; prom_next_node(&node); ) {
3141
3142 if (!PHANDLE_VALID(node))
3143 continue;
3144
3145 rval = prom_getproplen(node, "interrupts");
3146 if (rval == 0 || rval == PROM_ERROR)
3147 continue;
3148
3149 prom_getprop(node, "interrupts", &interrupts, sizeof(interrupts));
3150 if ((interrupts[0] < 212) || (interrupts[0] > 222))
3151 continue;
3152
3153
3154 if ((interrupts[0] >= 212) && (interrupts[0] <= 215))
3155 interrupts[0] -= 203;
3156 if ((interrupts[0] >= 216) && (interrupts[0] <= 220))
3157 interrupts[0] -= 213;
3158 if (interrupts[0] == 221)
3159 interrupts[0] = 14;
3160 if (interrupts[0] == 222)
3161 interrupts[0] = 8;
3162
3163 prom_setprop(node, pci_name, "interrupts", interrupts,
3164 sizeof(interrupts));
3165 prom_setprop(node, pci_name, "interrupt-parent", &parent,
3166 sizeof(parent));
3167 }
3168
3169
3170
3171
3172
3173
3174 name = "/pxp@0,e0000000/io-bridge@0";
3175 iob = call_prom("finddevice", 1, 1, ADDR(name));
3176 if (!PHANDLE_VALID(iob))
3177 return;
3178
3179
3180
3181 prom_printf("Changing device_type of SB600 node...\n");
3182
3183 prom_setprop(iob, name, "device_type", "isa", sizeof("isa"));
3184}
3185#else
3186static inline void fixup_device_tree_pasemi(void) { }
3187#endif
3188
3189static void __init fixup_device_tree(void)
3190{
3191 fixup_device_tree_maple();
3192 fixup_device_tree_maple_memory_controller();
3193 fixup_device_tree_chrp();
3194 fixup_device_tree_pmac();
3195 fixup_device_tree_efika();
3196 fixup_device_tree_pasemi();
3197}
3198
3199static void __init prom_find_boot_cpu(void)
3200{
3201 __be32 rval;
3202 ihandle prom_cpu;
3203 phandle cpu_pkg;
3204
3205 rval = 0;
3206 if (prom_getprop(prom.chosen, "cpu", &rval, sizeof(rval)) <= 0)
3207 return;
3208 prom_cpu = be32_to_cpu(rval);
3209
3210 cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu);
3211
3212 if (!PHANDLE_VALID(cpu_pkg))
3213 return;
3214
3215 prom_getprop(cpu_pkg, "reg", &rval, sizeof(rval));
3216 prom.cpu = be32_to_cpu(rval);
3217
3218 prom_debug("Booting CPU hw index = %d\n", prom.cpu);
3219}
3220
3221static void __init prom_check_initrd(unsigned long r3, unsigned long r4)
3222{
3223#ifdef CONFIG_BLK_DEV_INITRD
3224 if (r3 && r4 && r4 != 0xdeadbeef) {
3225 __be64 val;
3226
3227 prom_initrd_start = is_kernel_addr(r3) ? __pa(r3) : r3;
3228 prom_initrd_end = prom_initrd_start + r4;
3229
3230 val = cpu_to_be64(prom_initrd_start);
3231 prom_setprop(prom.chosen, "/chosen", "linux,initrd-start",
3232 &val, sizeof(val));
3233 val = cpu_to_be64(prom_initrd_end);
3234 prom_setprop(prom.chosen, "/chosen", "linux,initrd-end",
3235 &val, sizeof(val));
3236
3237 reserve_mem(prom_initrd_start,
3238 prom_initrd_end - prom_initrd_start);
3239
3240 prom_debug("initrd_start=0x%lx\n", prom_initrd_start);
3241 prom_debug("initrd_end=0x%lx\n", prom_initrd_end);
3242 }
3243#endif
3244}
3245
3246#ifdef CONFIG_PPC_SVM
3247
3248
3249
3250static int enter_secure_mode(unsigned long kbase, unsigned long fdt)
3251{
3252 register unsigned long r3 asm("r3") = UV_ESM;
3253 register unsigned long r4 asm("r4") = kbase;
3254 register unsigned long r5 asm("r5") = fdt;
3255
3256 asm volatile("sc 2" : "+r"(r3) : "r"(r4), "r"(r5));
3257
3258 return r3;
3259}
3260
3261
3262
3263
3264static void __init setup_secure_guest(unsigned long kbase, unsigned long fdt)
3265{
3266 int ret;
3267
3268 if (!prom_svm_enable)
3269 return;
3270
3271
3272 prom_printf("Switching to secure mode.\n");
3273
3274
3275
3276
3277
3278
3279 relocate(KERNELBASE);
3280
3281 ret = enter_secure_mode(kbase, fdt);
3282
3283
3284 relocate(kbase);
3285
3286 if (ret != U_SUCCESS) {
3287 prom_printf("Returned %d from switching to secure mode.\n", ret);
3288 prom_rtas_os_term("Switch to secure mode failed.\n");
3289 }
3290}
3291#else
3292static void __init setup_secure_guest(unsigned long kbase, unsigned long fdt)
3293{
3294}
3295#endif
3296
3297
3298
3299
3300
3301
3302unsigned long __init prom_init(unsigned long r3, unsigned long r4,
3303 unsigned long pp,
3304 unsigned long r6, unsigned long r7,
3305 unsigned long kbase)
3306{
3307 unsigned long hdr;
3308
3309#ifdef CONFIG_PPC32
3310 unsigned long offset = reloc_offset();
3311 reloc_got2(offset);
3312#endif
3313
3314
3315
3316
3317 memset(&__bss_start, 0, __bss_stop - __bss_start);
3318
3319
3320
3321
3322
3323 prom_init_client_services(pp);
3324
3325
3326
3327
3328
3329 prom_find_mmu();
3330
3331
3332
3333
3334 prom_init_stdout();
3335
3336 prom_printf("Preparing to boot %s", linux_banner);
3337
3338
3339
3340
3341
3342 of_platform = prom_find_machine_type();
3343 prom_printf("Detected machine type: %x\n", of_platform);
3344
3345#ifndef CONFIG_NONSTATIC_KERNEL
3346
3347 if (PHYSICAL_START > 0)
3348 prom_panic("Error: You can't boot a kdump kernel from OF!\n");
3349#endif
3350
3351
3352
3353
3354 prom_check_initrd(r3, r4);
3355
3356
3357
3358
3359 early_cmdline_parse();
3360
3361#ifdef CONFIG_PPC_PSERIES
3362
3363
3364
3365 if (of_platform == PLATFORM_PSERIES ||
3366 of_platform == PLATFORM_PSERIES_LPAR)
3367 prom_send_capabilities();
3368#endif
3369
3370
3371
3372
3373 if (of_platform != PLATFORM_POWERMAC)
3374 copy_and_flush(0, kbase, 0x100, 0);
3375
3376
3377
3378
3379 prom_init_mem();
3380
3381
3382
3383
3384 prom_find_boot_cpu();
3385
3386
3387
3388
3389 prom_check_displays();
3390
3391#if defined(CONFIG_PPC64) && defined(__BIG_ENDIAN__)
3392
3393
3394
3395
3396
3397 if (of_platform == PLATFORM_PSERIES)
3398 prom_initialize_tce_table();
3399#endif
3400
3401
3402
3403
3404
3405 if (of_platform != PLATFORM_POWERMAC)
3406 prom_instantiate_rtas();
3407
3408#ifdef CONFIG_PPC64
3409
3410 prom_instantiate_sml();
3411#endif
3412
3413
3414
3415
3416
3417
3418
3419
3420 if (of_platform != PLATFORM_POWERMAC)
3421 prom_hold_cpus();
3422
3423
3424
3425
3426 if (prom_memory_limit) {
3427 __be64 val = cpu_to_be64(prom_memory_limit);
3428 prom_setprop(prom.chosen, "/chosen", "linux,memory-limit",
3429 &val, sizeof(val));
3430 }
3431#ifdef CONFIG_PPC64
3432 if (prom_iommu_off)
3433 prom_setprop(prom.chosen, "/chosen", "linux,iommu-off",
3434 NULL, 0);
3435
3436 if (prom_iommu_force_on)
3437 prom_setprop(prom.chosen, "/chosen", "linux,iommu-force-on",
3438 NULL, 0);
3439
3440 if (prom_tce_alloc_start) {
3441 prom_setprop(prom.chosen, "/chosen", "linux,tce-alloc-start",
3442 &prom_tce_alloc_start,
3443 sizeof(prom_tce_alloc_start));
3444 prom_setprop(prom.chosen, "/chosen", "linux,tce-alloc-end",
3445 &prom_tce_alloc_end,
3446 sizeof(prom_tce_alloc_end));
3447 }
3448#endif
3449
3450
3451
3452
3453 fixup_device_tree();
3454
3455
3456
3457
3458 prom_printf("copying OF device tree...\n");
3459 flatten_device_tree();
3460
3461
3462
3463
3464
3465
3466 if (of_platform != PLATFORM_POWERMAC)
3467 prom_close_stdin();
3468
3469
3470
3471
3472
3473 prom_printf("Quiescing Open Firmware ...\n");
3474 call_prom("quiesce", 0, 0);
3475
3476
3477
3478
3479
3480
3481 hdr = dt_header_start;
3482
3483 prom_printf("Booting Linux via __start() @ 0x%lx ...\n", kbase);
3484 prom_debug("->dt_header_start=0x%lx\n", hdr);
3485
3486#ifdef CONFIG_PPC32
3487 reloc_got2(-offset);
3488#endif
3489
3490
3491 setup_secure_guest(kbase, hdr);
3492
3493 __start(hdr, kbase, 0, 0, 0, 0, 0);
3494
3495 return 0;
3496}
3497