i.MX ProcessorsのトピックRe: Custom SDMA script for i.MX7D/S

Custom SDMA script for i.MX7D/S

ko-hey — Fri, 14 Jul 2017 00:52:04 GMT

Hi all

I want to expand SDMA's script function.

Q1.
It seems that NXP provides an assembler for creating SDMA sript, is it available ?
If possible, please tell me the origin url.

The following URL teach me NXP provides a assembler for creating SDMA sript.
http://billauer.co.il/blog/2011/10/imx-sdma-howto-assembler-linux/

Q2.
It seems to be a mechanism to expand binary data converted script into machine language into RAM under SDMA module using channel 0.
What method is recommended for making binary?

Is there a way to add the machine language output from the assembler using Hex editor ?

According to the following PDF, it can only for i.MX6.
http://cache.freescale.com/files/soft_dev_tools/doc/data_sheet/950-00140.pdf

Q3.
Is there sample code to run SDMA using my own SDMA script ?

Q4.
Furthermore, do you have sample code for 2DMA and 3D DMA ?

Ko-hey

Re: Custom SDMA script for i.MX7D/S

igorpadykov — Fri, 14 Jul 2017 05:55:28 GMT

Hi Ko-hey

unfortunately nxp does not support creation custom sdma script,

mentioned link is unofficial link, not supported by nxp.

The same answer is for other questions, customer can use sdma provided in official bsp

releases described on

http://www.nxp.com/products/software-and-tools/software-development-tools/i.mx-software-and-tools/i.mx-6series-i.mx-7series-software-and-development-tool-resources:IMX_SW

Note, additional help with sdma can be provided to customers through NXP Professional Services:

http://www.nxp.com/support/nxp-professional-services:PROFESSIONAL-SERVICE

Best regards
igor
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Re: Custom SDMA script for i.MX7D/S

ko-hey — Fri, 14 Jul 2017 08:54:26 GMT

Hi Igor

I understand.

I ask one more question.

How can I build the sdma-imx7d.bin from SDMA RAM scripts (sdma-mx7d.bin.ihex) ?

Ko-hey

Re: Custom SDMA script for i.MX7D/S

igorpadykov — Fri, 14 Jul 2017 10:51:02 GMT

Hi Ko-hey

as this is not officially supported, unfortunately there is no

available customers documentation for that, sorry.

Please try suggested path for creating custom sdma scripts.

Best regards
igor

Re: Custom SDMA script for i.MX7D/S

ceggers1 — Wed, 18 Nov 2020 11:03:14 GMT

Hi Ko-hey,

please read the following page regarding a new approach for making custom SDMA scripts:

https://community.nxp.com/t5/i-MX-Processors/SDMA-port-for-GNU-binutils-assembler-linker-debugger/m-p/1172930

regards
Christian