BCMNS3 QSPI memory layout
=========================

BCMNS3 has total 8MB non-volatile SPI flash memory. It is used to store
different images like fip.bin, nitro firmware, DDR shmo value and other backup
images.

Following is the QSPI flash memory layout.

/*         QSPI layout
 * |---------------------------|->0x000000
 * |                           |
 * |                           |
 * |        fip.bin            |
 * |         2MB               |
 * |                           |
 * ~                           ~
 * ~                           ~
 * |                           |
 * |                           |
 * |                           |
 * |---------------------------|->0x200000
 * |                           |
 * |                           |
 * |                           |
 * |       fip.bin (Mirror)    |
 * |        2MB                |
 * ~                           ~
 * ~                           ~
 * |                           |
 * |                           |
 * |                           |
 * |---------------------------|->0x400000
 * |                           |
 * |      Nitro NS3 Config     |
 * |          1.5M             |
 * |                           |
 * ~                           ~
 * ~                           ~
 * |                           |
 * |---------------------------|->0x580000
 * |      Nitro NS3 Config     |
 * |          1.5M             |
 * |        (Mirror)           |
 * ~                           ~
 * ~                           ~
 * |                           |
 * |---------------------------|->0x700000
 * |   Nitro NS3 bspd Config   |
 * |        64KB               |
 * ~                           ~
 * ~                           ~
 * |                           |
 * |---------------------------|->0x710000
 * |   Nitro NS3 bspd Config   |
 * |        64KB               |
 * ~       (Mirror)            ~
 * ~                           ~
 * |                           |
 * |---------------------------|->0x720000
 * |        SHMOO              |
 * |        64KB               |
 * |                           |
 * ~                           ~
 * ~                           ~
 * |---------------------------|->0x730000
 * |        Meta Data          |
 * |        832KB              |
 * |                           |
 * ~                           ~
 * ~                           ~
 * |                           |
 * |---------------------------|
 */