Hi Peng,
On Sun, 5 Jan 2025 at 18:14, Peng Fan peng.fan@nxp.com wrote:
Subject: Re: [PATCH 00/12] imx9: switch to bootstd for i.MX93/1 EVK/QSB and i.MX8M EVK
Hi Peng,
On Sun, 5 Jan 2025 at 17:27, Peng Fan peng.fan@oss.nxp.com wrote:
Hi Simon,
On Sun, Jan 05, 2025 at 08:30:55AM +1300, Simon Glass wrote:
Hi Peng,
On Sat, 4 Jan 2025 at 16:19, Peng Fan (OSS)
peng.fan@oss.nxp.com wrote:
Switch to bootstd for NXP i.MX9/8M boards with a bsp_bootcmd
as fallback.
[...]
This also switches to a text environment, great!
For bsp_bootcmd is it possible to create a bootmeth for your use
case?
If you would like to take a look (separate from this series), I could help with any issues that come up.
I just give a quick look of bootmeth, seems needs extlinux or bootscript (boot.scr). But both are used on NXP i.MX release as of now. In NXP releases, we put all script in the U-Boot ENV.
Do you have suggestions how to move to support bootmeth.
I'm not entirely sure what you are trying to do with the bootcmd,
With a single u-boot, we want to support Fedora/SUSE/etc and NXP Yocto releases.
So add a bsp_bootcmd as fallback to run NXP Yocto releases. NXP Yocto releases not have extlinux.cfg, nor boot.scr, we just have simple uboot hush command in bootcmd, simplied saying: run loadimage; run loadfdt; run mmcargs; booti ${loadaddr} - ${fdtaddr}
you could write your own bootmeth, e.g. using common code from the others. For example, bootmeth_script.c shows how to run a script and bootmeth_extlinux.c shows how to run an extlinux file. You could then create C code to perform your 'bsp' function, e.g. a new bootmeth_bsp.c.
I will give a look, but this seems we need put the "run loadimage and etc" in dtb and needs bootmeth_imx.c to support it.
Note that my suggestion here is as a follow-on to you current series, which I believe can be applied as is.
Anyway, as a starting point, yes you can use run_command() lots of times in the bootmeth to run the things you need. From there you can potentially change some commands to direct calls into the U-Boot functionality. The idea is to be able to locate the bootflow as a separate thing from booting it. I am quite happy to help as well.
Regards, SImon