| Rob Herring | 91a9fec | 2012-08-31 00:03:46 -0500 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/include/debug/icedcc.S |
| 3 | * |
| 4 | * Copyright (C) 1994-1999 Russell King |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | */ |
| 11 | |
| 12 | @@ debug using ARM EmbeddedICE DCC channel |
| 13 | |
| 14 | .macro addruart, rp, rv, tmp |
| 15 | .endm |
| 16 | |
| 17 | #if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K) || defined(CONFIG_CPU_V7) |
| 18 | |
| 19 | .macro senduart, rd, rx |
| 20 | mcr p14, 0, \rd, c0, c5, 0 |
| 21 | .endm |
| 22 | |
| 23 | .macro busyuart, rd, rx |
| 24 | 1001: |
| 25 | mrc p14, 0, \rx, c0, c1, 0 |
| 26 | tst \rx, #0x20000000 |
| 27 | beq 1001b |
| 28 | .endm |
| 29 | |
| 30 | .macro waituart, rd, rx |
| 31 | mov \rd, #0x2000000 |
| 32 | 1001: |
| 33 | subs \rd, \rd, #1 |
| 34 | bmi 1002f |
| 35 | mrc p14, 0, \rx, c0, c1, 0 |
| 36 | tst \rx, #0x20000000 |
| 37 | bne 1001b |
| 38 | 1002: |
| 39 | .endm |
| 40 | |
| 41 | #elif defined(CONFIG_CPU_XSCALE) |
| 42 | |
| 43 | .macro senduart, rd, rx |
| 44 | mcr p14, 0, \rd, c8, c0, 0 |
| 45 | .endm |
| 46 | |
| 47 | .macro busyuart, rd, rx |
| 48 | 1001: |
| 49 | mrc p14, 0, \rx, c14, c0, 0 |
| 50 | tst \rx, #0x10000000 |
| 51 | beq 1001b |
| 52 | .endm |
| 53 | |
| 54 | .macro waituart, rd, rx |
| 55 | mov \rd, #0x10000000 |
| 56 | 1001: |
| 57 | subs \rd, \rd, #1 |
| 58 | bmi 1002f |
| 59 | mrc p14, 0, \rx, c14, c0, 0 |
| 60 | tst \rx, #0x10000000 |
| 61 | bne 1001b |
| 62 | 1002: |
| 63 | .endm |
| 64 | |
| 65 | #else |
| 66 | |
| 67 | .macro senduart, rd, rx |
| 68 | mcr p14, 0, \rd, c1, c0, 0 |
| 69 | .endm |
| 70 | |
| 71 | .macro busyuart, rd, rx |
| 72 | 1001: |
| 73 | mrc p14, 0, \rx, c0, c0, 0 |
| 74 | tst \rx, #2 |
| 75 | beq 1001b |
| 76 | |
| 77 | .endm |
| 78 | |
| 79 | .macro waituart, rd, rx |
| 80 | mov \rd, #0x2000000 |
| 81 | 1001: |
| 82 | subs \rd, \rd, #1 |
| 83 | bmi 1002f |
| 84 | mrc p14, 0, \rx, c0, c0, 0 |
| 85 | tst \rx, #2 |
| 86 | bne 1001b |
| 87 | 1002: |
| 88 | .endm |
| 89 | |
| 90 | #endif /* CONFIG_CPU_V6 */ |