$ sam-ba -p serial -b sam9x60-ek -a nandflash -c erase
Opening serial port 'ttyACM0'
Connection opened.
Detected memory size is 536870912 bytes.
Page size is 4096 bytes.
Buffer is 8192 bytes (2 pages) at address 0x0030aca0.
NAND header value is 0xc1e04e07.
Supported erase block size: 256KB
Executing command 'erase'
Erased 262144 bytes at address 0x00000000 (0.05%)
Erased 262144 bytes at address 0x00040000 (0.10%)
..
..
Erased 262144 bytes at address 0x1ff80000 (99.95%)
Erased 262144 bytes at address 0x1ffc0000 (100.00%)
Connection closed.