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-rw-r--r--arch/powerpc/kernel/Makefile3
-rw-r--r--arch/powerpc/kernel/misc.S203
-rw-r--r--arch/powerpc/kernel/misc_32.S156
-rw-r--r--arch/powerpc/kernel/misc_64.S181
4 files changed, 209 insertions, 334 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 803858e86160..814f242aeb8c 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -50,7 +50,8 @@ extra-$(CONFIG_FSL_BOOKE) := head_fsl_booke.o
50extra-$(CONFIG_8xx) := head_8xx.o 50extra-$(CONFIG_8xx) := head_8xx.o
51extra-y += vmlinux.lds 51extra-y += vmlinux.lds
52 52
53obj-y += time.o prom.o traps.o setup-common.o udbg.o 53obj-y += time.o prom.o traps.o setup-common.o \
54 udbg.o misc.o
54obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o 55obj-$(CONFIG_PPC32) += entry_32.o setup_32.o misc_32.o
55obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o 56obj-$(CONFIG_PPC64) += misc_64.o dma_64.o iommu.o
56obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o 57obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
new file mode 100644
index 000000000000..fc23040d5a26
--- /dev/null
+++ b/arch/powerpc/kernel/misc.S
@@ -0,0 +1,203 @@
1/*
2 * This file contains miscellaneous low-level functions.
3 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
4 *
5 * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
6 * and Paul Mackerras.
7 *
8 * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
9 * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 */
16#include <asm/ppc_asm.h>
17
18 .text
19
20#ifdef CONFIG_PPC64
21#define IN_SYNC twi 0,r5,0; isync
22#define EIEIO_32
23#define SYNC_64 sync
24#else /* CONFIG_PPC32 */
25#define IN_SYNC
26#define EIEIO_32 eieio
27#define SYNC_64
28#endif
29/*
30 * Returns (address we are running at) - (address we were linked at)
31 * for use before the text and data are mapped to KERNELBASE.
32 */
33
34_GLOBAL(reloc_offset)
35 mflr r0
36 bl 1f
371: mflr r3
38 LOAD_REG_IMMEDIATE(r4,1b)
39 subf r3,r4,r3
40 mtlr r0
41 blr
42
43/*
44 * add_reloc_offset(x) returns x + reloc_offset().
45 */
46_GLOBAL(add_reloc_offset)
47 mflr r0
48 bl 1f
491: mflr r5
50 LOAD_REG_IMMEDIATE(r4,1b)
51 subf r5,r4,r5
52 add r3,r3,r5
53 mtlr r0
54 blr
55
56/*
57 * I/O string operations
58 *
59 * insb(port, buf, len)
60 * outsb(port, buf, len)
61 * insw(port, buf, len)
62 * outsw(port, buf, len)
63 * insl(port, buf, len)
64 * outsl(port, buf, len)
65 * insw_ns(port, buf, len)
66 * outsw_ns(port, buf, len)
67 * insl_ns(port, buf, len)
68 * outsl_ns(port, buf, len)
69 *
70 * The *_ns versions don't do byte-swapping.
71 */
72_GLOBAL(_insb)
73 cmpwi 0,r5,0
74 mtctr r5
75 subi r4,r4,1
76 blelr-
7700: lbz r5,0(r3)
78 eieio
79 stbu r5,1(r4)
80 bdnz 00b
81 IN_SYNC
82 blr
83
84_GLOBAL(_outsb)
85 cmpwi 0,r5,0
86 mtctr r5
87 subi r4,r4,1
88 blelr-
8900: lbzu r5,1(r4)
90 stb r5,0(r3)
91 EIEIO_32
92 bdnz 00b
93 SYNC_64
94 blr
95
96_GLOBAL(_insw)
97 cmpwi 0,r5,0
98 mtctr r5
99 subi r4,r4,2
100 blelr-
10100: lhbrx r5,0,r3
102 eieio
103 sthu r5,2(r4)
104 bdnz 00b
105 IN_SYNC
106 blr
107
108_GLOBAL(_outsw)
109 cmpwi 0,r5,0
110 mtctr r5
111 subi r4,r4,2
112 blelr-
11300: lhzu r5,2(r4)
114 EIEIO_32
115 sthbrx r5,0,r3
116 bdnz 00b
117 SYNC_64
118 blr
119
120_GLOBAL(_insl)
121 cmpwi 0,r5,0
122 mtctr r5
123 subi r4,r4,4
124 blelr-
12500: lwbrx r5,0,r3
126 eieio
127 stwu r5,4(r4)
128 bdnz 00b
129 IN_SYNC
130 blr
131
132_GLOBAL(_outsl)
133 cmpwi 0,r5,0
134 mtctr r5
135 subi r4,r4,4
136 blelr-
13700: lwzu r5,4(r4)
138 stwbrx r5,0,r3
139 EIEIO_32
140 bdnz 00b
141 SYNC_64
142 blr
143
144#ifdef CONFIG_PPC32
145_GLOBAL(__ide_mm_insw)
146#endif
147_GLOBAL(_insw_ns)
148 cmpwi 0,r5,0
149 mtctr r5
150 subi r4,r4,2
151 blelr-
15200: lhz r5,0(r3)
153 eieio
154 sthu r5,2(r4)
155 bdnz 00b
156 IN_SYNC
157 blr
158
159#ifdef CONFIG_PPC32
160_GLOBAL(__ide_mm_outsw)
161#endif
162_GLOBAL(_outsw_ns)
163 cmpwi 0,r5,0
164 mtctr r5
165 subi r4,r4,2
166 blelr-
16700: lhzu r5,2(r4)
168 sth r5,0(r3)
169 EIEIO_32
170 bdnz 00b
171 SYNC_64
172 blr
173
174#ifdef CONFIG_PPC32
175_GLOBAL(__ide_mm_insl)
176#endif
177_GLOBAL(_insl_ns)
178 cmpwi 0,r5,0
179 mtctr r5
180 subi r4,r4,4
181 blelr-
18200: lwz r5,0(r3)
183 eieio
184 stwu r5,4(r4)
185 bdnz 00b
186 IN_SYNC
187 blr
188
189#ifdef CONFIG_PPC32
190_GLOBAL(__ide_mm_outsl)
191#endif
192_GLOBAL(_outsl_ns)
193 cmpwi 0,r5,0
194 mtctr r5
195 subi r4,r4,4
196 blelr-
19700: lwzu r5,4(r4)
198 stw r5,0(r3)
199 EIEIO_32
200 bdnz 00b
201 SYNC_64
202 blr
203
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 01d3916c4cb1..c74774e2175d 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -61,32 +61,6 @@ _GLOBAL(mulhdu)
61 blr 61 blr
62 62
63/* 63/*
64 * Returns (address we're running at) - (address we were linked at)
65 * for use before the text and data are mapped to KERNELBASE.
66 */
67_GLOBAL(reloc_offset)
68 mflr r0
69 bl 1f
701: mflr r3
71 LOAD_REG_IMMEDIATE(r4,1b)
72 subf r3,r4,r3
73 mtlr r0
74 blr
75
76/*
77 * add_reloc_offset(x) returns x + reloc_offset().
78 */
79_GLOBAL(add_reloc_offset)
80 mflr r0
81 bl 1f
821: mflr r5
83 LOAD_REG_IMMEDIATE(r4,1b)
84 subf r5,r4,r5
85 add r3,r3,r5
86 mtlr r0
87 blr
88
89/*
90 * sub_reloc_offset(x) returns x - reloc_offset(). 64 * sub_reloc_offset(x) returns x - reloc_offset().
91 */ 65 */
92_GLOBAL(sub_reloc_offset) 66_GLOBAL(sub_reloc_offset)
@@ -781,136 +755,6 @@ _GLOBAL(atomic_set_mask)
781 blr 755 blr
782 756
783/* 757/*
784 * I/O string operations
785 *
786 * insb(port, buf, len)
787 * outsb(port, buf, len)
788 * insw(port, buf, len)
789 * outsw(port, buf, len)
790 * insl(port, buf, len)
791 * outsl(port, buf, len)
792 * insw_ns(port, buf, len)
793 * outsw_ns(port, buf, len)
794 * insl_ns(port, buf, len)
795 * outsl_ns(port, buf, len)
796 *
797 * The *_ns versions don't do byte-swapping.
798 */
799_GLOBAL(_insb)
800 cmpwi 0,r5,0
801 mtctr r5
802 subi r4,r4,1
803 blelr-
80400: lbz r5,0(r3)
805 eieio
806 stbu r5,1(r4)
807 bdnz 00b
808 blr
809
810_GLOBAL(_outsb)
811 cmpwi 0,r5,0
812 mtctr r5
813 subi r4,r4,1
814 blelr-
81500: lbzu r5,1(r4)
816 stb r5,0(r3)
817 eieio
818 bdnz 00b
819 blr
820
821_GLOBAL(_insw)
822 cmpwi 0,r5,0
823 mtctr r5
824 subi r4,r4,2
825 blelr-
82600: lhbrx r5,0,r3
827 eieio
828 sthu r5,2(r4)
829 bdnz 00b
830 blr
831
832_GLOBAL(_outsw)
833 cmpwi 0,r5,0
834 mtctr r5
835 subi r4,r4,2
836 blelr-
83700: lhzu r5,2(r4)
838 eieio
839 sthbrx r5,0,r3
840 bdnz 00b
841 blr
842
843_GLOBAL(_insl)
844 cmpwi 0,r5,0
845 mtctr r5
846 subi r4,r4,4
847 blelr-
84800: lwbrx r5,0,r3
849 eieio
850 stwu r5,4(r4)
851 bdnz 00b
852 blr
853
854_GLOBAL(_outsl)
855 cmpwi 0,r5,0
856 mtctr r5
857 subi r4,r4,4
858 blelr-
85900: lwzu r5,4(r4)
860 stwbrx r5,0,r3
861 eieio
862 bdnz 00b
863 blr
864
865_GLOBAL(__ide_mm_insw)
866_GLOBAL(_insw_ns)
867 cmpwi 0,r5,0
868 mtctr r5
869 subi r4,r4,2
870 blelr-
87100: lhz r5,0(r3)
872 eieio
873 sthu r5,2(r4)
874 bdnz 00b
875 blr
876
877_GLOBAL(__ide_mm_outsw)
878_GLOBAL(_outsw_ns)
879 cmpwi 0,r5,0
880 mtctr r5
881 subi r4,r4,2
882 blelr-
88300: lhzu r5,2(r4)
884 sth r5,0(r3)
885 eieio
886 bdnz 00b
887 blr
888
889_GLOBAL(__ide_mm_insl)
890_GLOBAL(_insl_ns)
891 cmpwi 0,r5,0
892 mtctr r5
893 subi r4,r4,4
894 blelr-
89500: lwz r5,0(r3)
896 eieio
897 stwu r5,4(r4)
898 bdnz 00b
899 blr
900
901_GLOBAL(__ide_mm_outsl)
902_GLOBAL(_outsl_ns)
903 cmpwi 0,r5,0
904 mtctr r5
905 subi r4,r4,4
906 blelr-
90700: lwzu r5,4(r4)
908 stw r5,0(r3)
909 eieio
910 bdnz 00b
911 blr
912
913/*
914 * Extended precision shifts. 758 * Extended precision shifts.
915 * 759 *
916 * Updated to be valid for shift counts from 0 to 63 inclusive. 760 * Updated to be valid for shift counts from 0 to 63 inclusive.
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 6bf4a4637209..580891cb8ccb 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -1,14 +1,12 @@
1/* 1/*
2 * arch/powerpc/kernel/misc64.S
3 *
4 * This file contains miscellaneous low-level functions. 2 * This file contains miscellaneous low-level functions.
5 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) 3 * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6 * 4 *
7 * Largely rewritten by Cort Dougan (cort@cs.nmt.edu) 5 * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
8 * and Paul Mackerras. 6 * and Paul Mackerras.
9 * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com) 7 * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
10 * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com) 8 * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com)
11 * 9 *
12 * This program is free software; you can redistribute it and/or 10 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License 11 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 12 * as published by the Free Software Foundation; either version
@@ -30,41 +28,10 @@
30 28
31 .text 29 .text
32 30
33/*
34 * Returns (address we are running at) - (address we were linked at)
35 * for use before the text and data are mapped to KERNELBASE.
36 */
37
38_GLOBAL(reloc_offset)
39 mflr r0
40 bl 1f
411: mflr r3
42 LOAD_REG_IMMEDIATE(r4,1b)
43 subf r3,r4,r3
44 mtlr r0
45 blr
46
47/*
48 * add_reloc_offset(x) returns x + reloc_offset().
49 */
50_GLOBAL(add_reloc_offset)
51 mflr r0
52 bl 1f
531: mflr r5
54 LOAD_REG_IMMEDIATE(r4,1b)
55 subf r5,r4,r5
56 add r3,r3,r5
57 mtlr r0
58 blr
59
60_GLOBAL(get_msr) 31_GLOBAL(get_msr)
61 mfmsr r3 32 mfmsr r3
62 blr 33 blr
63 34
64_GLOBAL(get_dar)
65 mfdar r3
66 blr
67
68_GLOBAL(get_srr0) 35_GLOBAL(get_srr0)
69 mfsrr0 r3 36 mfsrr0 r3
70 blr 37 blr
@@ -72,10 +39,6 @@ _GLOBAL(get_srr0)
72_GLOBAL(get_srr1) 39_GLOBAL(get_srr1)
73 mfsrr1 r3 40 mfsrr1 r3
74 blr 41 blr
75
76_GLOBAL(get_sp)
77 mr r3,r1
78 blr
79 42
80#ifdef CONFIG_IRQSTACKS 43#ifdef CONFIG_IRQSTACKS
81_GLOBAL(call_do_softirq) 44_GLOBAL(call_do_softirq)
@@ -281,144 +244,6 @@ _GLOBAL(__flush_dcache_icache)
281 bdnz 1b 244 bdnz 1b
282 isync 245 isync
283 blr 246 blr
284
285/*
286 * I/O string operations
287 *
288 * insb(port, buf, len)
289 * outsb(port, buf, len)
290 * insw(port, buf, len)
291 * outsw(port, buf, len)
292 * insl(port, buf, len)
293 * outsl(port, buf, len)
294 * insw_ns(port, buf, len)
295 * outsw_ns(port, buf, len)
296 * insl_ns(port, buf, len)
297 * outsl_ns(port, buf, len)
298 *
299 * The *_ns versions don't do byte-swapping.
300 */
301_GLOBAL(_insb)
302 cmpwi 0,r5,0
303 mtctr r5
304 subi r4,r4,1
305 blelr-
30600: lbz r5,0(r3)
307 eieio
308 stbu r5,1(r4)
309 bdnz 00b
310 twi 0,r5,0
311 isync
312 blr
313
314_GLOBAL(_outsb)
315 cmpwi 0,r5,0
316 mtctr r5
317 subi r4,r4,1
318 blelr-
31900: lbzu r5,1(r4)
320 stb r5,0(r3)
321 bdnz 00b
322 sync
323 blr
324
325_GLOBAL(_insw)
326 cmpwi 0,r5,0
327 mtctr r5
328 subi r4,r4,2
329 blelr-
33000: lhbrx r5,0,r3
331 eieio
332 sthu r5,2(r4)
333 bdnz 00b
334 twi 0,r5,0
335 isync
336 blr
337
338_GLOBAL(_outsw)
339 cmpwi 0,r5,0
340 mtctr r5
341 subi r4,r4,2
342 blelr-
34300: lhzu r5,2(r4)
344 sthbrx r5,0,r3
345 bdnz 00b
346 sync
347 blr
348
349_GLOBAL(_insl)
350 cmpwi 0,r5,0
351 mtctr r5
352 subi r4,r4,4
353 blelr-
35400: lwbrx r5,0,r3
355 eieio
356 stwu r5,4(r4)
357 bdnz 00b
358 twi 0,r5,0
359 isync
360 blr
361
362_GLOBAL(_outsl)
363 cmpwi 0,r5,0
364 mtctr r5
365 subi r4,r4,4
366 blelr-
36700: lwzu r5,4(r4)
368 stwbrx r5,0,r3
369 bdnz 00b
370 sync
371 blr
372
373/* _GLOBAL(ide_insw) now in drivers/ide/ide-iops.c */
374_GLOBAL(_insw_ns)
375 cmpwi 0,r5,0
376 mtctr r5
377 subi r4,r4,2
378 blelr-
37900: lhz r5,0(r3)
380 eieio
381 sthu r5,2(r4)
382 bdnz 00b
383 twi 0,r5,0
384 isync
385 blr
386
387/* _GLOBAL(ide_outsw) now in drivers/ide/ide-iops.c */
388_GLOBAL(_outsw_ns)
389 cmpwi 0,r5,0
390 mtctr r5
391 subi r4,r4,2
392 blelr-
39300: lhzu r5,2(r4)
394 sth r5,0(r3)
395 bdnz 00b
396 sync
397 blr
398
399_GLOBAL(_insl_ns)
400 cmpwi 0,r5,0
401 mtctr r5
402 subi r4,r4,4
403 blelr-
40400: lwz r5,0(r3)
405 eieio
406 stwu r5,4(r4)
407 bdnz 00b
408 twi 0,r5,0
409 isync
410 blr
411
412_GLOBAL(_outsl_ns)
413 cmpwi 0,r5,0
414 mtctr r5
415 subi r4,r4,4
416 blelr-
41700: lwzu r5,4(r4)
418 stw r5,0(r3)
419 bdnz 00b
420 sync
421 blr
422 247
423/* 248/*
424 * identify_cpu and calls setup_cpu 249 * identify_cpu and calls setup_cpu
@@ -563,6 +388,7 @@ _GLOBAL(real_writeb)
563 blr 388 blr
564#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */ 389#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */
565 390
391#ifdef CONFIG_CPU_FREQ_PMAC64
566/* 392/*
567 * SCOM access functions for 970 (FX only for now) 393 * SCOM access functions for 970 (FX only for now)
568 * 394 *
@@ -631,6 +457,7 @@ _GLOBAL(scom970_write)
631 /* restore interrupts */ 457 /* restore interrupts */
632 mtmsrd r5,1 458 mtmsrd r5,1
633 blr 459 blr
460#endif /* CONFIG_CPU_FREQ_PMAC64 */
634 461
635 462
636/* 463/*
generated by cgit v1.2.2 (git 2.25.0) at 2025-11-09 00:00:02 -0500