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→System boot
The boot process begins at Power On Reset (POR) where the hardware reset logic forces the ARM core to begin execution starting from the on-chip boot ROM.
The boot process is multi-stage and minimally includes the Boot ROM and the first-stage boot loader (FSBL). The Zynq-7000 AP SoC includes a factory-programmed Boot ROM that is not useraccessible.
The boot ROM:
* determines whether the boot is secure or non-secure
* performs some initialization of the system and cleanups
* reads the mode pins to determine the primary boot device
* once it is satisfied, it executes the FSBL
After a system reset, the system automatically sequences to initialize the system and process the first stage boot loader from the selected external boot device.
The process enables the user to configure the AP SoC platform as needed, including the PS and the PL.
Optionally, the JTAG interface can be enabled to give the design engineer access to the PS and the PL for test and debug purposes.
=== Boot options ===