Altera Cyclone V Boot Manual page 5

AN-709
2016.01.27
Figure 3: Raw Mode and Partition Mode Options
The MBR is a 512 byte data structure, located at address 0, describing the partitions existing on the
SD/MMC card.
The Raw mode does not allow the card to be partitioned, since the Preloaders are located at address 0,
where the MBR data structure needs to be placed.
When using the Partition mode, the Preloader is located on a custom partition that does not interfere with
the other partitions on the SD/MMC card. The other partitions could, for example, contain Windows FAT,
or Linux EXT2 or EXT3 file systems, providing more flexibility for the overall system design.
Related Information
Booting and Configuration
For more information about the SD/MMC clocking options selected by Boot ROM based on CSEL pins,
refer to the Booting and Configuration chapter of the Cyclone V Technical Reference Manual.
Boot from QSPI
When booting from QSPI, the four Preloader images are always located at the beginning of the QSPI
address space, occupying a total of 256 KB.
HPS SoC Boot Guide - Cyclone V SoC Development Kit
Send Feedback
5
Boot from QSPI
Altera Corporation