=> sf probe 0
SF: Detected w25q64cv with page size 256 Bytes, erase size 4 KiB, total 8 MiB
=> sf erase 0 +100000
SF: 1048576 bytes @ 0x0 Erased: OK
=> fatload mmc 0 ${loadaddr} MLO.byteswap
40504 bytes read in 6 ms (6.4 MiB/s)
=> sf write ${loadaddr} 0 ${filesize}
device 0 offset 0x0, size 0x9e38
SF: 40504 bytes @ 0x0 Written: OK
=> fatload mmc 0 ${loadaddr} u-boot_spi.img
772416 bytes read in 69 ms (10.7 MiB/s)
=> sf write ${loadaddr} 0x20000 ${filesize}
device 0 offset 0x20000, size 0xbc940
SF: 772416 bytes @ 0x20000 Written: OK
=>