small boot copier for EPCS

Hi Cris72,

Thank you very much for you reply. I guess I miss-understand the source code of small_boot_copier.s.

Besides, I think if I don't have the header in the image file, I can skip the header check by comment the following code directly:

// Check the boot image signature

nextpc return_address_less_4

br read_32b_from_flash

mov temp_data, return_value

movhi expected_value, %hi(VALID_BOOT_SIGNATURE)

ori expected_value, expected_value, %lo(VALID_BOOT_SIGNATURE)

bne temp_data, expected_value, error

// Now we can begin copying the boot record to RAM. This loop

// reads each individual record in the boot record, and copies it

// to the appropriate location in RAM. If the record is a JUMP

// record, the loop breaks and branches to the address indicated

// in the JUMP record.

// Increment flash_ptr by 28 to skip past the boot image header and into

// the real boot record (we already incremented it by 4 when we read the

// signature)

//

// You may wish to do more with the header information than just skip

// past it. If so, this is the place to do that.

addi flash_ptr, flash_ptr, 28

Am I right?

Thanks again.

Derek