neptune_frame_buffer.c

来自「OMAP1030 处理器的ARM 侧硬件测试代码 OMAP1030 是TI」· C语言 代码 · 共 67 行

/*
* ============================================================================
*			 
*            TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION
*
*   Property of Texas Instruments
*   For Unrestricted Internal Use Only
*   Unauthorized reproduction and/or distribution is strictly prohibited.
*   This product is protected under copyright law and trade secret law as an unpublished work.
*   Created 2003, (C) Copyright 2003 Texas Instruments.  All rights reserved.
*
*    Filename: neptune_frame_buffer.c
*
*    project: Neptune
*
*    Description: library for neptune internal sdram
*
*	 author : [e-mail]
*
* =============================================================================
*/

#include "neptune_frame_buffer.h"
#include "testaccess.h"

BOOL FB_CurrentlyResetting(void) {
	return (BOOL)(FB_PU_STATUS_REG & FB_PU_STATUS_RESET_MASK);
}

void FB_EnableProtection(void) {
	FB_PU_CONTROL_REG |= FB_PU_CONTROL_MEM_PROT_MASK;
}

void FB_DisableProtection(void) {
	FB_PU_CONTROL_REG &= ~FB_PU_CONTROL_MEM_PROT_MASK;
}

void FB_EnableMemoryReset(void) {
	FB_PU_CONTROL_REG |= FB_PU_CONTROL_MEM_RESET_MASK;
}

void FB_DisableMemoryReset(void) {
	FB_PU_CONTROL_REG &= ~FB_PU_CONTROL_MEM_RESET_MASK;
}

void FB_StartMemoryReset(void) {
	FB_PU_CONTROL_REG |= FB_PU_CONTROL_START_RESET_MASK;
}

void FB_LockFBPUregisters(void) {
	FB_PU_CONTROL_REG |= FB_PU_CONTROL_FBPU_SEC_MASK;
}

UWORD16 FB_TestResetValues(void) {
	if ((FB_PU_CONTROL_REG != FB_PU_CONTROL_REG_RESET_VALUE) || (FB_PU_STATUS_REG != FB_PU_STATUS_REG_RESET_VALUE)) return TEST_BAD;
	else return TEST_OK;
}

BOOL FB_ViolationReported(void) {
	return (BOOL)(FB_PU_STATUS_REG & FB_PU_STATUS_IA_MEM_MASK);	
}

void FB_ClearIllegalAccessFlag(void) {
	FB_PU_STATUS_REG = 0x00000000; //value is don't care	
}