[PATCH v1] colibri_imx7: disable HAB and CAAM support

[Igor Opaniuk]

Hi Breno,

On Mon, Dec 23, 2019 at 7:07 PM Breno Matheus Lima
<brenomatheus at gmail.com> wrote:
>
> Hi Igor,
>
> Em qui., 19 de dez. de 2019 às 07:55, Igor Opaniuk
> <igor.opaniuk at gmail.com> escreveu:
> >
> > From: Igor Opaniuk <igor.opaniuk at toradex.com>
> >
> > Currently Colibri iMX7 NAND version doesn't boot at all with
> > HABv4 support enabled. If CSF section is included in the final
> > imx binary, BootROM every time switches to usb recovery mode.
> > However eMMC version of the same SoM works without any issues.
> >
> > Disable HAB and CAAM support for now until the problem is properly
> > investigated and fixed.
> >
>
> This issue is also happening with i.MX6ULL, seems that padding the
> U-Boot binary to the size defined in boot data is addressing this
> issue.
>
> Please follow example below.
>
> 1. Dump boot data:
>
> $ hexdump u-boot-dtb.imx | head
> 0000000 00d1 4020 0000 8780 0000 0000 f42c 877f
> 0000010 f420 877f f400 877f 6000 878d 0000 0000
> 0000020 f000 877f b000 000d 0000 0000 01d2 40e8
> 0000030 01cc 04e4 0c02 6840 ffff ffff 0c02 6c40
>
> IVT self = 0x877ff400
> Boot data addr = 0x877ff000
> Boot data size = 0x000db000
>
> 2. Calculate image size:
>
> Image offset = IVT self(0x877ff400) - Boot data addr(0x877ff000) = 0x400
> Total image size = Boot data size(0x000db000) - Image offset(0x400) = 0xdac00
>
> 3. Pad U-Boot image:
>
> $ objcopy -I binary -O binary --pad-to 0xdac00 --gap-fill=0x00
> u-boot-dtb.imx u-boot-dtb.imx.pad
>
> Could you please try similar in your i.MX7D board?
>
> Thanks,
> Breno Lima

Finally, it works!

Thanks a lot for your help! This should be documented (I'll create a
patch for this)
or padding should implicitly be done in makefiles when building the
final imx image,
including initial padding for 0x400, like here [1].

Regards,
Igor

[1] https://patchwork.ozlabs.org/patch/1136343/

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Igor Opaniuk

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