LINUXSDK-OMAPL138: Kernel freeze when reserving memory for DSP

Ali Reeza

In ti-processor-sdk-linux-omapl138-lcdk-06.01.00.08 if I change u-boot variable netargs from:

set netargs "setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},${nfsopts} rw ip=192.168.1.10"

to:

set netargs "setenv bootargs ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},${nfsopts} rw ip=192.168.1.10 mem=32M@0xc0000000 mem=64M@0xc4000000"

to reserve memory for DSP, boot process freeze at "Starting Kernel ..."

Thanks.

over 6 years ago

0 Rex Chang over 6 years ago

TI__Guru 50170 points

Hi, Alireza,

Do they have any conflict with other memory reservation? By default, the dts has the following reserved.

memory@c0000000 {
/* 128 MB DDR2 SDRAM @ 0xc0000000 */
reg = <0xc0000000 0x08000000>;
};

reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
ranges;

dsp_memory_region: dsp-memory@c3000000 {
compatible = "shared-dma-pool";
reg = <0xc3000000 0x1000000>;
reusable;
status = "okay";
};

Rex

0 Ali Reeza over 6 years ago in reply to Rex Chang

Expert 1250 points

Hi Rex,

I have not changed kernel. So there should not be any conflict.

0 Rex Chang over 6 years ago in reply to Ali Reeza

TI__Guru 50170 points

Hi, Alireza,

I meant to say that the memory you reserved in bootcmd conflicts with what kernel reserves. What do you need to reserve it from bootcmd instead of using that dts file for your need?

Rex

0 Ali Reeza over 6 years ago in reply to Rex Chang

Expert 1250 points

Thank you Rex,

I changed netargs. Instead of mem segments definition I added "rproc_mem=16M@0xC3000000"

Regards.

Processors

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LINUXSDK-OMAPL138: Kernel freeze when reserving memory for DSP