NXP S32G

This page has specific information for running L4Re on NXP’s S32G2 and S32G3.

Building

Build an image for the S32G as follows:

$ make uimage E=hello PT=s32g

Booting

The S32G BSP needs a device-tree. Usually, a .dtb file is available on the flash on the device. Just use this one with u-boot.

Booting with u-boot

The standard BSP by NXP comes with u-boot.

To boot L4Re, intercept theh u-boot boot countdown such that the boot is stopped and the u-boot prompt is shown.

At the prompt, do something like the following. Please adapt files names as required:

# fatload mmc 0 0x80f00000 fsl-s32g274a-evb.dtb
# fatload mmc 0 0x80ffffc0 l4re_vm-multi-p2p_s32g.uimage
# bootm 0x80ffffc0  - 0x80f00000

The dtb should be available on the emmc already as it is the same as used for booting Linux.

Copy the l4re_vm-multi-p2p_s32g.uimage file to the mmc first, for example, through Linux.

Booting via Network

u-boot can also be used to retrieve the uimage via TFTP. A typical workflow can be:

# dhcp
# fatload mmc 0 0x80f00000 fsl-s32g274a-evb.dtb
# tftpboot 0x80ffffc0 /path/on/your/tftp/server/l4re_vm-multi-p2p_s32g.uimage
# bootm 0x80ffffc0  - 0x80f00000

You might also need to set the correct networking config, this depends on your board and the specific network cofniguration. For example:

# eqos physelect 4