RE: [PATCH v2 10/10] nova-core: gsp: Boot GSP

[Timur Tabi]

> +        sec2_falcon.reset(bar)?;
> +        sec2_falcon.dma_load(bar, &booter_loader)?;
> +        let wpr_handle = wpr_meta.dma_handle();
> +        let (mbox0, mbox1) = sec2_falcon.boot(
> +            bar,
> +            Some(wpr_handle as u32),
> +            Some((wpr_handle >> 32) as u32),
> +        )?;
> +        dev_dbg!(
> +            pdev.as_ref(),
> +            "SEC2 MBOX0: {:#x}, MBOX1{:#x}\n",
> +            mbox0,
> +            mbox1
> +        );

You should add something like this:

        if mbox0 != 0 {
            dev_err!(pdev.as_ref(), "Booter-load failed with error {:#x}\n", 
mbox0);
            return Err(ENODEV);
        }

Booter returns an error code in MBOX0, and it's very handy to display that code 
if it's non-zero.