i.MX Processorsのトピックimx8mq 4GB Uboot BootUp Fail

imx8mq 4GB Uboot BootUp Fail

shangregister — Thu, 31 Oct 2019 08:31:33 GMT

hi all

i pushed the 4GB on the EVK but hangup

like this

U-Boot 2018.03-imx_v2018.03_4.14.98_2.1.0+gb9dc0acc7a (Oct 31 2019 - 07:46:08 +0000)

CPU: Freescale i.MX8MQ rev2.1 1500 MHz (running at 1000 MHz)
CPU: Commercial temperature grade (0C to 95C) at 43C
Reset cause: POR
Model: Freescale i.MX8MQ EVK
DRAM:

no any message after "DRAM:"

i modified include/configs/imx8mq_evk.h

-#define PHYS_SDRAM_SIZE 0xC0000000 /* 3GB DDR */
+#define PHYS_SDRAM_SIZE 0x100000000 /* 4GB DDR */

Yocto Version :L4.14.98-2.1.0

and i used DDR Tools to gen lpddr4_timing.c to the Uboot compile.

the Calibration is pass and the Stress Test is pass in mscale DDR tool.

Re: imx8mq 4GB Uboot BootUp Fail

Yuri — Fri, 01 Nov 2019 05:06:28 GMT

Hello,

I've sent You patch for U-boot directly. Hope it helps.

Regards,

Yuri.

Re: imx8mq 4GB Uboot BootUp Fail

shangregister — Mon, 04 Nov 2019 01:25:46 GMT

i used yours patch ,not help

Re: imx8mq 4GB Uboot BootUp Fail

Yuri — Tue, 05 Nov 2019 03:46:24 GMT

Hello,

Also use general approach to modify memory configuration,

described in Chapter 3 (Porting U-Boot) of "i.MX_Porting_Guide.pdf".

https://www.nxp.com/webapp/Download?colCode=L4.14.98_2.2.0_LINUX_DOCS

Regards,

Yuri.