Parallel NOR-Flash of 16bit BUS and IVT data

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Parallel NOR-Flash of 16bit BUS and IVT data

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tamotsu
Contributor IV

Hellow.

On page 1241 of the i.MX7D reference manual, the IVT header format diagram suggests that the value to be set would be 0xD1-0x0020-0x40 to .word 0xD1002040, but in the 20132 "i.MX6 IVT structure" Anson Huang answers that it should be .word 0x402000D1.

I think the manual says this is

0x400 = 0xD100

0x402 = 0x2040

but is that wrong?

Thank you.

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Harvey021
NXP TechSupport
NXP TechSupport

The header ivt should be included in image by default, we don't need to modify it.

And we can try to dump it using command od w/t option little or big endian

od -x -N 48 --endian=little u-boot.imx 

or

od -x -N 48 --endian=big u-boot.imx

 

Regards

Harvey

 

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Harvey021
NXP TechSupport
NXP TechSupport

Hi, 

tag = D1 is the first byte. The difference as Anson's should be caused by display options, like endian.

 

Regards

Harvey

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tamotsu
Contributor IV

Thank you Harvey021.

So Anson explained it in little-endian?

I'm confused because the reference manual says it's big-endian.

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Harvey021
NXP TechSupport
NXP TechSupport

The header ivt should be included in image by default, we don't need to modify it.

And we can try to dump it using command od w/t option little or big endian

od -x -N 48 --endian=little u-boot.imx 

or

od -x -N 48 --endian=big u-boot.imx

 

Regards

Harvey

 

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