arm64: dts: qcom: sm8550: add TRNG node
[linux-modified.git] / arch / powerpc / kernel / vdso / cacheflush.S
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * vDSO provided cache flush routines
4  *
5  * Copyright (C) 2004 Benjamin Herrenschmuidt (benh@kernel.crashing.org),
6  *                    IBM Corp.
7  */
8 #include <asm/processor.h>
9 #include <asm/ppc_asm.h>
10 #include <asm/vdso.h>
11 #include <asm/vdso_datapage.h>
12 #include <asm/asm-offsets.h>
13 #include <asm/cache.h>
14
15         .text
16
17 /*
18  * Default "generic" version of __kernel_sync_dicache.
19  *
20  * void __kernel_sync_dicache(unsigned long start, unsigned long end)
21  *
22  * Flushes the data cache & invalidate the instruction cache for the
23  * provided range [start, end[
24  */
25 V_FUNCTION_BEGIN(__kernel_sync_dicache)
26   .cfi_startproc
27 BEGIN_FTR_SECTION
28         b       3f
29 END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
30 #ifdef CONFIG_PPC64
31         mflr    r12
32   .cfi_register lr,r12
33         get_datapage    r10
34         mtlr    r12
35   .cfi_restore  lr
36 #endif
37
38 #ifdef CONFIG_PPC64
39         lwz     r7,CFG_DCACHE_BLOCKSZ(r10)
40         addi    r5,r7,-1
41 #else
42         li      r5, L1_CACHE_BYTES - 1
43 #endif
44         andc    r6,r3,r5                /* round low to line bdy */
45         subf    r8,r6,r4                /* compute length */
46         add     r8,r8,r5                /* ensure we get enough */
47 #ifdef CONFIG_PPC64
48         lwz     r9,CFG_DCACHE_LOGBLOCKSZ(r10)
49         PPC_SRL.        r8,r8,r9                /* compute line count */
50 #else
51         srwi.   r8, r8, L1_CACHE_SHIFT
52         mr      r7, r6
53 #endif
54         crclr   cr0*4+so
55         beqlr                           /* nothing to do? */
56         mtctr   r8
57 1:      dcbst   0,r6
58 #ifdef CONFIG_PPC64
59         add     r6,r6,r7
60 #else
61         addi    r6, r6, L1_CACHE_BYTES
62 #endif
63         bdnz    1b
64         sync
65
66 /* Now invalidate the instruction cache */
67
68 #ifdef CONFIG_PPC64
69         lwz     r7,CFG_ICACHE_BLOCKSZ(r10)
70         addi    r5,r7,-1
71         andc    r6,r3,r5                /* round low to line bdy */
72         subf    r8,r6,r4                /* compute length */
73         add     r8,r8,r5
74         lwz     r9,CFG_ICACHE_LOGBLOCKSZ(r10)
75         PPC_SRL.        r8,r8,r9                /* compute line count */
76         crclr   cr0*4+so
77         beqlr                           /* nothing to do? */
78 #endif
79         mtctr   r8
80 #ifdef CONFIG_PPC64
81 2:      icbi    0,r6
82         add     r6,r6,r7
83 #else
84 2:      icbi    0, r7
85         addi    r7, r7, L1_CACHE_BYTES
86 #endif
87         bdnz    2b
88         isync
89         li      r3,0
90         blr
91 3:
92         crclr   cr0*4+so
93         sync
94         icbi    0,r1
95         isync
96         li      r3,0
97         blr
98   .cfi_endproc
99 V_FUNCTION_END(__kernel_sync_dicache)