projects/linux·blob master · refs

95 lines · 1.4 KiB

1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * arch/arm/include/debug/icedcc.S
4 *
5 * Copyright (C) 1994-1999 Russell King
6 */
7
8 @@ debug using ARM EmbeddedICE DCC channel
9
10 .macro addruart, rp, rv, tmp
11 .endm
12
13#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7)
14
15 .macro senduart, rd, rx
16 mcr p14, 0, \rd, c0, c5, 0
17 .endm
18
19 .macro busyuart, rd, rx
201001:
21 mrc p14, 0, \rx, c0, c1, 0
22 tst \rx, #0x20000000
23 beq 1001b
24 .endm
25
26 .macro waituartcts, rd, rx
27 .endm
28
29 .macro waituarttxrdy, rd, rx
30 mov \rd, #0x2000000
311001:
32 subs \rd, \rd, #1
33 bmi 1002f
34 mrc p14, 0, \rx, c0, c1, 0
35 tst \rx, #0x20000000
36 bne 1001b
371002:
38 .endm
39
40#elif defined(CONFIG_CPU_XSCALE)
41
42 .macro senduart, rd, rx
43 mcr p14, 0, \rd, c8, c0, 0
44 .endm
45
46 .macro busyuart, rd, rx
471001:
48 mrc p14, 0, \rx, c14, c0, 0
49 tst \rx, #0x10000000
50 beq 1001b
51 .endm
52
53 .macro waituartcts, rd, rx
54 .endm
55
56 .macro waituarttxrdy, rd, rx
57 mov \rd, #0x10000000
581001:
59 subs \rd, \rd, #1
60 bmi 1002f
61 mrc p14, 0, \rx, c14, c0, 0
62 tst \rx, #0x10000000
63 bne 1001b
641002:
65 .endm
66
67#else
68
69 .macro senduart, rd, rx
70 mcr p14, 0, \rd, c1, c0, 0
71 .endm
72
73 .macro busyuart, rd, rx
741001:
75 mrc p14, 0, \rx, c0, c0, 0
76 tst \rx, #2
77 beq 1001b
78
79 .endm
80
81 .macro waituartcts, rd, rx
82 .endm
83
84 .macro waituarttxrdy, rd, rx
85 mov \rd, #0x2000000
861001:
87 subs \rd, \rd, #1
88 bmi 1002f
89 mrc p14, 0, \rx, c0, c0, 0
90 tst \rx, #2
91 bne 1001b
921002:
93 .endm
94
95#endif /* CONFIG_CPU_V6 */