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 submenu 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 submenu allows you to:
- Select which Ethernet is the systems’ primary Ethernet
- Select to randomize MAC address
- Set the MAC address of the selected primary Ethernet. By default, the address is set to ff:ff:ff:ff:ff:ff invalid mac.
If a MAC address is programmed into the EEPROM and you want to use EEPROM mac, due to the previous invalid MAC address, it reads from the EEPROM if there is no ENV MAC from U-Boot. If no MAC address is configured in the EEPROM, the U-Bootgenerates a random MAC address if mac address is not defined from the U-Boot environment.
The order in which the U-Boot picks the MAC address is as follows. Refer to the U-Boot documentation for commands to program EEPROM and to configure for the same.
- The MAC address from the U-Boot environment has the highest priority.
- The MAC address from the device tree has the next highest priority. Anything configured in the goes to the device tree.
- If there is no MAC address in the device tree or invalid mac address(ff:ff:ff:ff:ff:ff), it checks in EEPROM.
- If there is no MAC address in the EEPROM, it generates a random MAC address.
- 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.
Netmask address changes for sysvinit and systemd
- Set the static IP from petalinux-config → Subsystem Auto Hardware Settings → Ethernet Settings. By default , obtain IP address is enabled. Disable it to set the static IP address. By default Static IP netmask address in 255.255.255.0, Edit/Specify netmask address accordingly.
- In case of sysvinit /etc/network/interfaces file is invoked, it
generates with netmask address in dot-decimal notation for example,
255.255.255.0, dot-decimal notation format is
supported.
address 192.168.0.10 netmask 255.255.255.0
- In case of systemd wired.network file is invoked, it is
generated with netmask address in CIDR notation for example, 24 CIDR notation
format is
supported.
Address=192.168.0.10/24
Ethernet submask changes when static IP generation is enabled
Set the static IP from $ petalinux-config → Subsystem Auto Hardware Settings → Ethernet Settings.
Please specify the netmask address accordingly.
In the case of sysvinit, /etc/network/interfaces file is invoked, and 255.255.255.0 netmask address is supported.
In the case of systemd, specify the address (255.255.255.0)and calculate the bits. Pass netmask as bits (24) to the wired network.
System Architecture Menu
In 2023.1 release, a new menu configuration option to the know system architecture petalinux-config -> System Architecture based on the design is created. The system architecture menu is for user information.
Flash Settings
The Flash Settings submenu allows you to:
- Select a primary flash for the system
- 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 submenu 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 submenu 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 submenu 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.
Bootable Image/U-Boot Environment Partition | Default Partition Name | Description |
---|---|---|
Boot Image | boot |
BOOT.BIN
for Zynq 7000 devices, Zynq UltraScale+ MPSoC, and
Versal adaptive SoC. 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. |