void nand_demo() {
int (*OS_Entry)(void *);
unsigned int offset;
int blockno;
int blockstart;
int blockend;
int page;
enable_nand();
blockstart=0x20000/0x4000;
blockend=blockstart+(0x170000/0x4000);
offset=0x31000000;
for(blockno=blockstart;blockno<(blockend+1);blockno++) {
for(page=0;page<32;page++) {
NAND_ReadPage(blockno,page,offset);
offset = offset + 512;
}
}
clean_cache();
putstr("OS read successfully\r\n");
putstr("Press any key to continue\r\n");
getchar();
OS_Entry=(int *)0x31000000;
OS_Entry(1);
}
void main(void)
{
register nBlock;
register nPage;
register nBadBlocks;
volatile unsigned char *pBuf;
// Set up copy section (initialized globals).
//
// NOTE: after this call, globals become valid.
//
SetupCopySection(pTOC);
// Enable the ICache.
//System_EnableICache(); // I-Cache was already enabled in startup.s
// Set up all GPIO ports for LED.
//Port_Init();
//Led_Display(0xf);
// UART Initialize
#if UART_DEBUG
Uart_Init();
Uart_SendString("\r\nWinCE 6.0 Steploader for SMDK6410\r\n");
// Initialize the NAND flash interface.
Uart_SendString("NAND Initialize\n\r");
#endif
g_bLargeBlock = NAND_Init();
// Copy image from NAND flash to RAM.
pBuf = (unsigned char *)LOAD_ADDRESS_PHYSICAL;
nBadBlocks = 0;
//Led_Display(0x4);
for (nPage = LOAD_IMAGE_PAGE_OFFSET; nPage < (LOAD_IMAGE_PAGE_OFFSET + LOAD_IMAGE_PAGE_COUNT) ; nPage++)
{
//Led_Display(0x1);
nBlock = ((nPage / NAND_PAGES_PER_BLOCK) + nBadBlocks);
if (!NAND_ReadPage(nBlock, (nPage % NAND_PAGES_PER_BLOCK), pBuf))
{
if ((nPage % NAND_PAGES_PER_BLOCK) != 0)
{
//Led_Display(0x9); // real ECC Error.
#if UART_DEBUG
Uart_SendString("ECC Error.\r\n");
#endif
while(1)
{
// Spin forever...
}
}
// ECC error on a block boundary is (likely) a bad block - retry the page 0 read on the next block.
nBadBlocks++;
nPage--;
continue;
}
pBuf += NAND_BYTES_PER_PAGE;
}
//Led_Display(0x6);
#if UART_DEBUG
Uart_SendString("Launch Eboot...\n\r");
#endif
((PFN_IMAGE_LAUNCH)(LOAD_ADDRESS_PHYSICAL))();
}
