Issue about How to disable non-boot CPU

tony_l_cai — Wed, 29 Jul 2015 00:49:19 GMT

Hi all,

Now we want to disable non-boot CPU, how to control CPU disable or enable manually?

Re: Issue about How to disable non-boot CPU

Yuri — Wed, 29 Jul 2015 01:58:57 GMT

Please use kernel boot parameter “maxcpus”, which is described

Linux Release Notes :
maxcpus=n : n >= 0 limits the kernel to using 'n' processors.
n=0 is a special case. It is equivalent to "nosmp", assuming

running as a single processor machine.

Hardly it makes sense to control CPU disable or enable manually

under Linux. For stand alone configuration, please refer to Chapter 3 (Multicore
Startup) of “iMX6_Firmware_Guide.pdf“ i.MX6 Platform SDK.

The SDK link :

"Bare-metal SDK for the i.MX 6 series, including reusable drivers and tests for

many peripherals, and much example code. Also includes register definition

headers files, and register definitions for debuggers"

https://www.freescale.com/webapp/Download?colCode=i.MX6_PLATFORM_SDK&location=null

Also, example in the following thread may be used.

“Integrating Processor Expert for i.MX and ARM GCC with Eclipse”

https://community.freescale.com/docs/DOC-103736

Have a great day,
Yuri

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i.MX ProcessorsのトピックIssue about How to disable non-boot CPU

Issue about How to disable non-boot CPU

Re: Issue about How to disable non-boot CPU