main.c

nand boot memory main

#include "def.h"
#include "option.h"
#include "sfr6410.h"
#include "System.h"
#include "Nand.h"
#include "Uart.h"

#define BUTTON_Init()		rGPNCON &= ~(0xff)
#define PRESS				!(rGPNDAT & 0x1)
#define UNPRESS				rGPNDAT & 0x1

#define DOWNLOAD_ADDRESS	(0x53e00000)

int main(void)
{
	//main start
	u32 i, block, page_size, block_count;
	u8 *downPt = (u8 *)(DOWNLOAD_ADDRESS);
	void (*run)(void) = (void (*)(void))(DOWNLOAD_ADDRESS);

	// Hardware Init
	SYSTEM_EnableICache();
	BUTTON_Init();
	Uart_Init(1);

	// Button Check..
	if(UNPRESS)
	{
		DownloadImageThruUart(downPt);
	}
	else
	{

	#if (NAND_TYPE == NORMAL_8BIT)
		page_size = 32;
	#elif (NAND_TYPE == ADVANCED_8BIT)
		page_size = 64;
	#elif (NAND_TYPE == MLC_8BIT)
		page_size = 128;
	#endif
		
		NF8_Init();
		
		block = 1;
		NF8_ReadPage(block, 0, (unsigned char *)downPt);
		block_count = *(u32*)downPt;

		for(i=1;i<=block_count;i++)
		{
			if(!(i%page_size)) block++;
			if(!NF8_ReadPage(block, i % page_size, (unsigned char *)downPt))  
			{
				Uart_puts("\nnand error\n");
				while(1);
			}
	#if (NAND_TYPE == NORMAL_8BIT)
			downPt += 512;	    // Next page
	#elif (NAND_TYPE == ADVANCED_8BIT)
			downPt += 2048;	    // Next page
	#elif (NAND_TYPE == MLC_8BIT)
			downPt += 2048;	    // Next page
	#endif
		}
	}

	run();
}