inithw_a9.c

有关于USB的一些主机端驱动

/*=============================================================================*/
/*            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/*   as an unpublished work.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 2001, (C) Copyright 2001 Texas Instruments.  All rights reserved. */
/*                                                                             */
/*   Filename       	: InitHW_a9.c                                          */
/*                                                                             */
/*   Description    	: Functions for the initialization of ARM9 and DSP     */
/*                                                                             */
/*   Project        	: OMAP3 - HELEN                                        */
/*                                                                             */
/*   Author         	: Arnaud Balmelle [e-mail]                    */
/*                                                                             */
/*=============================================================================*/

#include "omap30.h"
#include "omap1510.h"
#include "InitHW_a9.h" 

extern unsigned long add;

void InitDSPMMU( void );
void InitLCD_STN12BPP( void );
/*----------------------------------------------------------*/
/* NAME        : InitDSPMMU                                 */
/* DESCRIPTION : Initialization of the DSP MMU              */
/*                                                          */
/* PARAMETERS  : None                                       */
/* RETURN VALUE: None                                       */
/* LIMITATIONS : None                                       */
/*----------------------------------------------------------*/
void InitDSPMMU( void )
{ 
  /* ---------------------------------------------------------------------
  Build Translation table and enable DSP MMU
    
   Virtual Address (DSP Memory Space)| Physical Address (ARM Memory Space)  
  ========================================================================  
   org = 0x00400000 len = 0x100000   | org = 0x00000000 len = 0x100000
   org = 0x00500000 len = 0x100000   | org = 0x10000000 len = 0x100000
   org = 0x00600000 len = 0x100000   | org = 0x20000000 len = 0x100000
  ---------------------------------------------------------------------- */
  
  /* Release reset and enable the DSP MMU */
  MMU_Release_Reset(DSP_MMU);
  MMU_Enable(DSP_MMU);
  
  MMU_Write_TLB_Entry(DSP_MMU,
		  0x10200000,           /* Physical address */
		  0x00080000,           /* Virtual address */
		  LARGE_PAGE,   //Size: 64K           /* Size : 1 MBytes */
		  FULL_ACCESS,          /* Ap bits */
		  0,                    /* Locked base value */
		  0,                    /* 1st entry */
		  ENTRY_NOT_PRESERVED);

  /* Second entry of TLB (Translation Lockaside Buffer) */
  MMU_Write_TLB_Entry(DSP_MMU,
		  0x10300000,           /* Physical address */
		  0x00400000,           /* Virtual address */
		  SECTION,              /* Size : 1 MBytes */
		  FULL_ACCESS,          /* Ap bits */
		  0,                    /* Locked base value */
		  1,                    /* 2nd entry */
		  ENTRY_NOT_PRESERVED);
  /* Second entry of TLB (Translation Lockaside Buffer) */
  MMU_Write_TLB_Entry(DSP_MMU,
		  0x10600000,           /* Physical address */
		  0x00500000,           /* Virtual address */
		  SECTION,              /* Size : 1 MBytes */
		  FULL_ACCESS,          /* Ap bits */
		  0,                    /* Locked base value */
		  2,                    /* 2nd entry */
		  ENTRY_NOT_PRESERVED);
} 
///////////////////////////////////////////////////////////

void InitLCD_STN12BPP( void )
{
  // Change LCD Clock divider and Enable LCD Clock
//  CLKRST_SetClockDivider(LCD_DIV,CLK_DIV_BY_2);

  CLKRST_SetPeripheralClockEnable(LCD_CK, ENABLE);
  CLKRST_SetPeripheralClockEnable(DMA_REQ_CK, DISABLE);

  // Initialization of LCD Channel of System DMA
  DMA_SetupSystemDma(DMA_FREE_RUNNING);
	*((unsigned short*)0xFFFEDB00) = 0x0000;
	*((unsigned short*)0xFFFEDB02) = 0x0000;
	*((unsigned short*)0xFFFEDB04) = 0x1030;
	*((unsigned short*)0xFFFEDB06) = 0x581E;
	*((unsigned short*)0xFFFEDB08) = 0x1032;

  
  // Initialization of LCD Controller
  LCD_ControllerDisable();

  LCD_SetLcdTiming0Register((240-1),	// PixelPerLine
                            8,			// HorizontalSynchroPulseWidth
                            2,			// HorizontalFrontPorsh
                            1);		// HorizontalBackPorsh

  LCD_SetLcdTiming1Register((320-1),	// LinePerPanel
                            9,			// VerticalSynchroPulseWidth
                            4,//0,			// VerticalFrontPorsh
                            9);//0);			// VerticalBackPorsh

  LCD_SetLcdTiming2Register(8,			// PixelClockDivisor
                            0,			// AcPinFrequency
                            0,			// AcBiasPinTransitionPerInterrupt
                            1,//TRUE,		// InvertVsync
                            1,//TRUE,		// InvertHsync
                            0,//FALSE,		// InvertPixelClock
                            0);//FALSE);		// InvertOutputEnable

  LCD_SetControlRegister(LCD_Disable,
                         LCD_Color,
                         LCD_FrameInterruptDisable,
                         LCD_LoadInterruptDisable,
                         LCD_Tft,
                         LCD_LittleEndian,
                         LCD_4bit,
                         0,		// FifoDmaRequestDelay
                         //LCD_DataLoading,
                         LCD_PaletteDataLoading,
                         LCD_WinCEDisable);
  
  memset((int*)0x10300000, 0, 32);
  *((unsigned short*)0x10300000) = 0x4000;
  LCD_ControllerEnable();
	return;
}