Add kernel build (target imx93-evk:knsh) to i.MX93 EVK.
This target is preconfigured for use with AHAB boot (see
https://spsdk.readthedocs.io/en/latest/examples/ahab/imx93/imx93_ahab_uboot.html)
as a replacement of U-Boot proper (BL33 at EL2), hence
the load address is set to 0x80200000.
Signed-off-by: George Poulios <gpoulios@census-labs.com>
This does the following:
1. Fetches mkimage_imx8 (same used with imx9) source code
2. Fetches the ELE / AHAB binary
3. Extracts the ELE / AHAB binary
4. Compiles the mkimage with hostcc
5. Utilizes the mkimage tool to create a bootable SD image,
combining the ELE / AHAB image with the NuttX bootloader
6. dd is used to prepend empty space in place of BL31
7. Outputs sdimage.img which is a bootable binary
8. Removes all binaries, sources code images that have been
downloaded
Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
It is advisable to set bootdelay to 0 when using bootcmd to disable
dcache on u-boot. Using bootdelay -1 will definitely work as it disables
bootcmd altogether (and leaves the dcache enabled). This step is added
to remove confusion.
Adds board definition for imx93-evk board
- Support for the Cortex-A55 core in i.MX93, support for the Cortex-M33
core is _not_ provided
- "nsh" profile is provided, this includes a minimalistic feature set
which boots the SoM to nsh console
- A bootloader is required, u-boot has been tested
