author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 18 Jan 2010 21:31:10 +0200 | |
changeset 45 | 329ab0095843 |
parent 43 | 96e5fb8b040d |
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permissions | -rw-r--r-- |
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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// e32\include\nkernsmp\arm\arm_tmr.h |
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// |
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// WARNING: This file contains some APIs which are internal and are subject |
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// to change without notice. Such APIs should therefore not be used |
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// outside the Kernel and Hardware Services package. |
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// |
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#ifndef __ARM_TMR_H__ |
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#define __ARM_TMR_H__ |
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#include <e32def.h> |
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#ifdef __STANDALONE_NANOKERNEL__ |
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#undef __IN_KERNEL__ |
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#define __IN_KERNEL__ |
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#endif |
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#if !defined(__CPU_ARM11MP__) && !defined(__CPU_CORTEX_A9__) |
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#error Unknown local timer |
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#endif |
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// Local timer looks the same on ARM11MP and Cortex A9 |
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struct ArmLocalTimer |
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{ |
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volatile TUint32 iTimerLoad; // 00 Timer reload value (write also writes counter) |
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volatile TUint32 iTimerCount; // 04 Timer instantaneous count value |
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volatile TUint32 iTimerCtrl; // 08 Timer control register |
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volatile TUint32 iTimerIntStatus; // 0C Timer interrupt status register |
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volatile TUint32 i_Spare1[4]; // 10 unused |
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volatile TUint32 iWatchdogLoad; // 20 Watchdog reload value (write also writes counter) |
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volatile TUint32 iWatchdogCount; // 24 Watchdog instantaneous count value |
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volatile TUint32 iWatchdogCtrl; // 28 Watchdog control register |
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volatile TUint32 iWatchdogIntStatus; // 2C Watchdog interrupt status register |
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volatile TUint32 iWatchdogResetSent; // 30 Watchdog reset sent register |
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volatile TUint32 iWatchdogDisable; // 34 Watchdog disable register |
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volatile TUint32 i_Spare2[50]; // 38 unused |
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}; |
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__ASSERT_COMPILE(sizeof(ArmLocalTimer)==0x100); |
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// These bits apply to both timer and watchdog control registers |
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enum TArmTimerCtrl |
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{ |
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E_ArmTmrCtrl_Enable =1u, // when set, timer counts down |
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E_ArmTmrCtrl_Reload =2u, // when set, timer reloads on reaching zero |
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E_ArmTmrCtrl_IntEn =4u, // when set enables timer interrupt |
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E_ArmTmrCtrl_WD =8u, // set when in watchdog mode (watchdog only, can write to 1 but not 0) |
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E_ArmTmrCtrl_PrescaleShift =8u, |
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E_ArmTmrCtrl_PrescaleMask =0xff00u, // bits 8-15 = prescale value - divides by (P+1) |
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// input to prescaler is PERIPHCLK (=CPUCLK/2 on NE1, CPUCLK/N in general, N>=2) |
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E_ArmTmrCtrl_Prescale64 =0x3f00u, // value to prescale by 64 (matches cycle counter prescaler) |
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}; |
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enum TArmTimerIntStatus |
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{ |
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E_ArmTmrIntStatus_Event =1u // set when timer counter reaches zero, write 1 to clear |
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}; |
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enum TArmTimerWRS |
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{ |
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E_ArmTmrWRS_ResetSent =1u // set if the watchdog caused a reset, write 1 to clear |
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}; |
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enum TArmTimerWDDisable |
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{ |
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E_ArmTmrWDD_1 =0x12345678u, // to disable watchdog, write this ... |
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E_ArmTmrWDD_2 =0x87654321u, // ... then this with no intervening writes |
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}; |
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#endif // __ARM_TMR_H__ |