main.c

ADI 公司的DSP ADSP21262 EZ-KIT LITE开发板的全部源代码

///////////////////////////////////////////////////////////////////////////////////////
//NAME:     main.c (AMD Parallel Flash Programmer)
//DATE:     9/18/03
//PURPOSE:  Program the Parallel Flash for the ADSP-21262 Ezkit
//
//USAGE:    This file contains the main code for programming the PP flash on the
//          ADSP-21262 Ezkit lite.
//
//          If more than one file is to be programmed, either include all files in the
//          same buffer (for contiguous location), or make sure that the files will not
//          occupy any common 64K sectors in the flash, as programming the subsequent
//          buffers will erase parts of the previously programmed buffers.
//
//          For the AMD Am29LV081B the sectors occupy the following byte addresses:
//          Sector                              Address Range
//          SA0                                 0x00000 - 0x0FFFF
//          SA1                                 0x10000 - 0x1FFFF
//          SA2                                 0x20000 - 0x2FFFF
//          SA3                                 0x30000 - 0x3FFFF
//          SA4                                 0x40000 - 0x4FFFF
//          SA5                                 0x50000 - 0x5FFFF
//          SA6                                 0x60000 - 0x6FFFF
//          SA7                                 0x70000 - 0x7FFFF
//          SA8                                 0x80000 - 0x8FFFF
//          SA9                                 0x90000 - 0x9FFFF
//          SA10                                0xA0000 - 0xAFFFF
//          SA11                                0xB0000 - 0xBFFFF
//          SA12                                0xC0000 - 0xCFFFF
//          SA13                                0xD0000 - 0xDFFFF
//          SA14                                0xE0000 - 0xEFFFF
//          SA15                                0xF0000 - 0xFFFFF
//
//
////////////////////////////////////////////////////////////////////////////////////////
#include "ppflash.h"
#include <signal.h>

//Declare the destination address in the flash of the file
#define LDR_START_ADDR  0x1000000
//Declare the width of the data in the file to determine the number of bytes
//Change this declaration in the LDF file also for correct packing.
#define FILE_DATA_WIDTH 16

//Declare a semaphore variable to use in the parallel port interrupt
int ppInterruptFlag = 0;

//Declare a variable in external memory to hold the file data to program
#pragma section("seg_ext", DMAONLY)
section("seg_ext") int ldr_source[] = {
                              #include "input.ldr"
                              };

//Main routine - add calls to blockWrite for each buffer holding file data
void main()
{
    //Set up the interrupt for the parallel port
    interrupt(SIG_PP,ppInterruptHandler);
    //Workaround for C Runtime problem (fixed with patch released 10/03/2003)
    interrupt(SIG_SP1, SIG_IGN);

    //Call the block for each buffer holding the file data, pass the address of the
    //buffer in SRAM, the address to program to in the flash, and the number of bytes to
    //program.
    blockWrite(ldr_source,(int *) LDR_START_ADDR,sizeof(ldr_source)*FILE_DATA_WIDTH/8);
}