i.MX ProcessorsのトピックRe: Boot Image Layout in IMX8DQXP

Boot Image Layout in IMX8DQXP

vmuthusu — Thu, 07 Feb 2019 04:10:30 GMT

I am referring to the IMX8DQXPRM.pdf document Figure 5-25 Typical Boot Image Layout.

Header 1	Header 2
Primary Image Container Set	1st Container Header (SECO FW) 1st Signature Block Padding for 1KB alignment 2nd Container Header (SCFW + M4 + AP) 2nd SIgnature Block SECO FW SCU FW with DDR initialization image embedded CM4 Image AP IPL
	-------
Secondary Image Container Set

Header 1

Header 2

Primary Image Container Set

1st Container Header (SECO FW)

1st Signature Block

Padding for 1KB alignment

2nd Container Header (SCFW + M4 + AP)

2nd SIgnature Block

SECO FW

SCU FW with DDR initialization image embedded

CM4 Image

AP IPL

-------

Secondary Image Container Set

My assumption is that the Secondary Image Container Set will also have

1st Container Header (SECO FW)

1st Signature Block

Padding for 1KB alignment

2nd Container Header (SCFW + M4 + AP)

2nd SIgnature Block

SECO FW

SCU FW with DDR initialization image embedded

CM4 Image

AP IPL

And this Secondary Image Container Set starts at an offset specified in the eFUSE Row index 720 against the Image Container Set1 Offset location. Is that correct?

My question is

1. Is it possible to create a single binary file from the mkimage_imx8 with both image container sets present in it adhering to the above boot image layout.

a. If yes what should be the command to invoke the mkimage_imx8.

b. If no then how we should generate the binaries matching the above boot image layout.

Thanks

V.Muthusubramanian

Re: Boot Image Layout in IMX8DQXP

igorpadykov — Sun, 10 Feb 2019 23:13:36 GMT

Hi Muthusubramanian

in general this is possible and seems for such case one can look at eMMC fast boot
Secondary Image Container Set example in sect.5.8.2.2.1 High Level eMMC Boot
Flow i.MX8DQXP Reference Manual
https://www.nxp.com/docs/en/reference-manual/IMX8DQXPRM.pdf
and imx-mkimage sources for "emmc_fastboot" fast boot option

imx-mkimage/src/imx8qxb0.c

imx8qxb0.c\src - imx-mkimage - i.MX Mkimage Bootloader Tool

Unfortunately currently there are no public documentation for this case or examples.

Your assumption regarding Secondary Image Container Set seem as correct.

Best regards
igor
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Re: Boot Image Layout in IMX8DQXP

sureshrao — Fri, 15 Feb 2019 10:49:34 GMT

Hello, Muthusubramanian,

>> Is it possible to create a single binary file from the mkimage_imx8 with both image container sets present in it adhering to the above boot image layout.

>> a. If yes what should be the command to invoke the mkimage_imx8.

>> b. If no then how we should generate the binaries matching the above boot image layout.

Primary and secondary image container set are two separate binaries, same set of commands are used to generate both these binaries.

Best Regards,

Suresh