The Subsystem AUTO Hardware settings menu allows you to customize how the Linux system interacts with the underlying hardware platform.
System Processor
The System processor menu specifies the CPU processor on which the system runs.
Memory Settings
The memory settings menu allows you to:
- Select which memory IP is the primary system memory
- Set the system memory base address
- Set the size of the system memory
- Set the U-Boot text base address offset to a memory high address
The configuration in this menu impacts the memory settings in the device tree and U-Boot automatic configuration (autoconfig) files.
If manual is selected as the primary memory, you are responsible for ensuring proper memory settings for the system.
Serial Settings
The Serial Settings sub-menu allows you to select which serial device
is the system’s primary STDIN/STDOUT interface. If manual is selected as the primary serial, you are responsible for
ensuring proper serial interface settings for the system.
Ethernet Settings
The Ethernet Settings sub-menu allows you to:
- Select which Ethernet is the systems’ primary Ethernet
- Select to randomize MAC address
- Set the MAC address of the primary Ethernet
If MAC address is programmed into EEPROM, keep this empty here. Refer to the U-Boot documentation for commands to program EEPROM and to configure for the same.
- Set whether to use DHCP or static IP on the primary Ethernet
If manual is selected as the primary Ethernet, you are responsible for ensuring proper Ethernet settings for the system.
Flash Settings
The Flash Settings sub-menu allows you to:
- Select which flash is the system’s primary flash
- Set the flash partition table
If manual is selected as the primary flash, you are responsible for the flash settings for the system.
SD/SDIO Settings
The SD/SDIO Settings sub-menu is for Zynq-7000 devices and Zynq UltraScale+ MPSoC only. It allows you to select which SD controller is the system’s primary SD card interface.
If manual is selected as the primary flash, you are responsible for the flash settings for the system.
Timer Settings
The Timer Settings sub-menu is for MicroBlaze processors and Zynq UltraScale+ MPSoC. It allows you to select which timer is the primary timer.
Reset GPIO Settings
The Reset GPIO Settings sub-menu is for MicroBlaze processors only. It allows you to select which GPIO is the system reset GPIO.
RTC Settings
Select an RTC instance that is used as a primary timer for the Linux kernel. If your preferred RTC is not on the list, select manual to enable the proper kernel driver for your RTC.
Advanced Bootable Images Storage Settings
The advanced bootable images storage settings sub-menu allows you to specify where the bootable images are located. The settings in this sub-menu are used by PetaLinux to configure U-Boot.
If this sub-menu is disabled, PetaLinux uses the flash partition table specified in the Flash Settings sub-menu to define the location of the bootable images.
| Bootable Image/U-Boot Environment Partition | Default Partition Name | Description |
|---|---|---|
| Boot Image | boot |
BOOT.BIN
for Zynq-7000
devices
. Relocatable U-Boot BIN file (u-boot-s.bin) for MicroBlaze processors. |
| U-Boot Environment Partition | bootenv | U-Boot environment variable partition. When primary sd is selected, U-Boot environment is stored in the first partition. When primary flash is selected, U-Boot environment is stored in the partition mentioned in flash partition name option. |
| Kernel Image | kernel | Kernel image image.ub (FIT format) |
| DTB Image | dtb | If "Advanced bootable images storage Settings" is disabled and a DTB partition is found in the flash partition table settings, PetaLinux configures U-Boot to load the DTB from the partition table. Else, it assumes a DTB is contained in the kernel image. |