boot NIOS and FPGA from EPCS flash

Thank you Daixiwen for your answer.

After some modification in the code given above.Now, i can write and read to/from my flash device.

But the problem i'm facing is that my data written to the flash are shifted, i can see that in the debug mode using the Memory.

For example when i Write in the address 0x04FC0000, the data 0x3fa00000, Instead i see 0xF1050000. It seems to be shifted.

The routine that writes is :

/* write to flash 32 bits at a time */

IOWR_32DIRECT(epcq_flash_info->data_base, write_offset, word_to_write);

word_to_write = 0x3fa00000.

It's very strange. Do you have an idea what would be the problem?

Thank you in advance.

Best regards