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1/*
2 * Copyright (c) 2022-2022 Huawei Technologies Co., Ltd. All rights reserved.
3 *
4 * UniProton is licensed under Mulan PSL v2.
5 * You can use this software according to the terms and conditions of the Mulan PSL v2.
6 * You may obtain a copy of Mulan PSL v2 at:
7 *          http://license.coscl.org.cn/MulanPSL2
8 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
9 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
10 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
11 * See the Mulan PSL v2 for more details.
12 * Create: 2022-11-22
13 * Description: cache相关处理。
14 */
15
16    .section .os.init.text, "ax"
17
18    .global OsCacheConfigInit
19    .global OsCacheFlushDcache
20    .global OsCacheInvIcache
21
22    .type OsCacheConfigInit, "function"
23    .type OsCacheFlushDcache, "function"
24    .type OsCacheInvIcache, "function"
25
26.macro GetCacheLineSize size, tmp
27    mrs  \tmp, ctr_el0
28    lsr  \tmp, \tmp, #16
29    and  \tmp, \tmp, #0xf
30    mov  \size, #4
31    lsl  \size, \size, \tmp
32.endm
33
34OsCacheConfigInit:
35    mov  w0, #0
36    ret
37
38/*
39 * 描述：按地址范围进行DCache写回
40 * 备注：当前仅用于动态加载模块
41 */
42OsCacheFlushDcache:
43    GetCacheLineSize x2, x3
44    sub  x3, x2, #1
45    add  x1, x0, x1
46    bic  x0, x0, x3
471:  dc   cvac, x0             /* Data Cache Clean by address to Point of Coherency */
48    add  x0, x0, x2
49    cmp  x0, x1
50    b.lo 1b
51    dsb  sy
52    ret
53
54/*
55 * 描述：按地址范围进行ICache无效
56 * 备注：当前仅用于动态加载模块
57 */
58OsCacheInvIcache:
59    GetCacheLineSize x2, x3
60    sub  x3, x2, #1
61    add  x1, x0, x1
62    bic  x0, x0, x3
631:  ic   ivau, x0             /* I cache Invalidate by address to Point of Unification */
64    add  x0, x0, x2
65    cmp  x0, x1
66    b.lo 1b
67    dsb  sy
68    isb  sy
69    ret
70
71    .text
72