projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| c021880a WD |
1 | /* |
| 2 | * INCA-IP Watchdog timer management code. | |
| 3 | * | |
| 4 | * Copyright (c) 2003 Wolfgang Denk <wd@denx.de> | |
| 5 | * | |
| 1a459660 | 6 | * SPDX-License-Identifier: GPL-2.0+ |
| c021880a WD |
7 | */ |
| 8 | ||
| 9 | ||
| 10 | #include <config.h> | |
| c021880a WD |
11 | #include <asm/regdef.h> |
| 12 | ||
| 13 | ||
| 14 | #define WD_BASE 0xb8000000 | |
| 15 | #define WD_CON0(value) 0x0020(value) | |
| 16 | #define WD_CON1(value) 0x0024(value) | |
| 17 | #define WD_DISABLE 0x00000008 | |
| 18 | #define WD_ENABLE 0x00000000 | |
| 19 | #define WD_WRITE_PW 0xFFFC00F8 | |
| 20 | #define WD_WRITE_ENDINIT 0xFFFC00F3 | |
| 21 | #define WD_WRITE_INIT 0xFFFC00F2 | |
| 22 | ||
| 23 | ||
| 24 | .globl disable_incaip_wdt | |
| 25 | disable_incaip_wdt: | |
| 26 | li t0, WD_BASE | |
| 27 | ||
| 28 | /* Calculate password. | |
| 29 | */ | |
| 30 | lw t2, WD_CON1(t0) | |
| 31 | and t2, 0xC | |
| 32 | ||
| 33 | lw t3, WD_CON0(t0) | |
| 34 | and t3, 0xFFFFFF01 | |
| 35 | ||
| 36 | or t3, t2 | |
| 53677ef1 | 37 | or t3, 0xF0 |
| c021880a WD |
38 | |
| 39 | sw t3, WD_CON0(t0) /* write password */ | |
| 40 | ||
| 41 | /* Clear ENDINIT. | |
| 42 | */ | |
| 43 | li t1, WD_WRITE_INIT | |
| 44 | sw t1, WD_CON0(t0) | |
| 45 | ||
| 46 | ||
| 47 | li t1, WD_DISABLE | |
| 48 | sw t1, WD_CON1(t0) /* disable watchdog */ | |
| 49 | li t1, WD_WRITE_PW | |
| 50 | sw t1, WD_CON0(t0) /* write password */ | |
| 51 | li t1, WD_WRITE_ENDINIT | |
| 52 | sw t1, WD_CON0(t0) /* end command */ | |
| 53 | ||
| 43c50925 | 54 | jr ra |
| c021880a | 55 | nop |