openpcd/firmware/src/os/wdt.c @ master
| 1 | 1413b9c0 | (no author) | /* AT91SAM7 Watch Dog Timer code for OpenPCD / OpenPICC
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| 2 | * (C) 2006 by Harald Welte <hwelte@hmw-consulting.de>
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| 3 | 32985a29 | laforge | *
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| 4 | * This program is free software; you can redistribute it and/or modify
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| 5 | * it under the terms of the GNU General Public License as published by
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| 6 | * the Free Software Foundation; either version 2 of the License, or
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| 7 | * (at your option) any later version.
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| 8 | *
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| 9 | * This program is distributed in the hope that it will be useful,
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | * GNU General Public License for more details.
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| 13 | *
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| 14 | * You should have received a copy of the GNU General Public License
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| 15 | * along with this program; if not, write to the Free Software
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| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 17 | *
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| 18 | 1413b9c0 | (no author) | */
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| 19 | |||
| 20 | 48afc6a1 | laforge | #include <lib_AT91SAM7.h>
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| 21 | #include <AT91SAM7.h>
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| 22 | |||
| 23 | #include <os/dbgu.h>
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| 24 | bfff30bf | laforge | #include <os/system_irq.h>
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| 25 | 48afc6a1 | laforge | |
| 26 | 4c0cf591 | Harald Welte | #define WDT_WDD 0xFF
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| 27 | #define WDT_WDV 0xFF
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| 28 | |||
| 29 | d10804d3 | meri | #ifdef WDT_DEBUG
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| 30 | #undef WDT_DEBUG
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| 31 | #endif/*WDT_DEBUG*/ |
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| 32 | 4c0cf591 | Harald Welte | |
| 33 | 373c172a | Harald Welte | static void wdt_irq(uint32_t sr) |
| 34 | 1413b9c0 | (no author) | {
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| 35 | 4c0cf591 | Harald Welte | if (sr & 1) |
| 36 | 82cb631b | Min Xu | AT91F_DBGU_Frame("================> WATCHDOG EXPIRED !!!!!\n\r"); |
| 37 | 4c0cf591 | Harald Welte | if (sr & 2) |
| 38 | 82cb631b | Min Xu | AT91F_DBGU_Frame("================> WATCHDOG ERROR !!!!!\n\r"); |
| 39 | 1413b9c0 | (no author) | }
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| 40 | |||
| 41 | 48afc6a1 | laforge | void wdt_restart(void) |
| 42 | {
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| 43 | AT91F_WDTRestart(AT91C_BASE_WDTC); |
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| 44 | }
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| 45 | |||
| 46 | 1413b9c0 | (no author) | void wdt_init(void) |
| 47 | {
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| 48 | bfff30bf | laforge | sysirq_register(AT91SAM7_SYSIRQ_WDT, &wdt_irq); |
| 49 | 1413b9c0 | (no author) | #ifdef WDT_DEBUG
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| 50 | 4c0cf591 | Harald Welte | AT91F_WDTSetMode(AT91C_BASE_WDTC, (WDT_WDD << 16) | |
| 51 | 1413b9c0 | (no author) | AT91C_WDTC_WDDBGHLT | AT91C_WDTC_WDIDLEHLT | |
| 52 | 4c0cf591 | Harald Welte | AT91C_WDTC_WDFIEN | WDT_WDV); |
| 53 | 1413b9c0 | (no author) | #else
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| 54 | 4c0cf591 | Harald Welte | AT91F_WDTSetMode(AT91C_BASE_WDTC, (WDT_WDD << 16) | |
| 55 | AT91C_WDTC_WDDBGHLT | AT91C_WDTC_WDIDLEHLT | |
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| 56 | AT91C_WDTC_WDRSTEN | WDT_WDV); |
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| 57 | 1413b9c0 | (no author) | #endif
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| 58 | }
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