i.MX ProcessorsのトピックRe: imx6sx RAM 512 stuck while flashing

imx6sx RAM 512 stuck while flashing

rakesh_patel — Wed, 24 Jun 2020 13:25:44 GMT

imx6sx based custom board stuck in uboot while flashing using mfgtool.

Configurations:

Memory type:	DDR3
Manufacturer:	Micron
Memory part number:	MT41K128M16JT-107 IT:K TR
Density per chip select (Gb):	4
Number of Chip Selects per channel used2	1
Total DRAM density (Gb)	4
Number of ROW Addresses2	14
Number of COLUMN Addresses2	10
Number of BANKS2	8
Bus Width (input 16, 32, or 64 bits)2	32
Clock Cycle Freq (MHz)3	400

DCD table is attached.

uboot folder in fsl build = u-boot-imx-mfgtool/2016.03-r0/

Stuck logs:

===================

U-Boot 2016.03-nxp/imx_v2016.03_4.1.15_2.0.0_ga+ga57b13b (Jun 24 2020 - 18:37:49 +0530)

CPU: Freescale i.MX6SX rev1.4 at 792MHz
CPU: Automotive temperature grade (-40C to 125C) at 47C
Reset cause: POR
Board: MX6SX SABRE SDB
I2C: ready
DRAM:

Re: imx6sx RAM 512 stuck while flashing

igorpadykov — Wed, 24 Jun 2020 23:36:45 GMT

Hi Rakesh

for usage mfg tool with new board one can follow recommendations provided on:

Imx6ull buildroot flash with mfgtool

Best regards
igor
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Re: imx6sx RAM 512 stuck while flashing

rakesh_patel — Thu, 25 Jun 2020 16:19:02 GMT

igorpadykov‌:

Thanks for your reply.

I also added DCD values for Calibration values. and in last I found that, I missed out to change PHYS_SDRAM_SIZE .

/*#define PHYS_SDRAM_SIZE SZ_1G*/
#define PHYS_SDRAM_SIZE SZ_512M

So. now it is not hanging uboot boot.

But again, it hang while transferring call from uboot to kernel.

Same like this.

https://community.nxp.com/message/1034222?commentID=1034222#comment-1034222

Can you please let me know, how to solve this ?

Re: imx6sx RAM 512 stuck while flashing

rakesh_patel — Thu, 25 Jun 2020 17:14:35 GMT

What changes required in kernel dts file for changing 1GB ram to 512RAM?

Re: imx6sx RAM 512 stuck while flashing

rakesh_patel — Thu, 25 Jun 2020 18:00:38 GMT

I enabled early printk and found that kernel actually stuck here..

Normal Boot
Hit any key to stop autoboot: 0
reading m4_pzt_application.bin
29628 bytes read in 18 ms (1.6 MiB/s)
## Starting auxiliary core at 0x007F8000 ...
switch to partitions #0, OK
mmc2(part 0) is current device
switch to partitions #0, OK
mmc2(part 0) is current device
reading boot.scr
** Unable to read file boot.scr **
reading zImage
5582152 bytes read in 158 ms (33.7 MiB/s)
Booting from mmc ...
reading imx6sx-sdb-m4.dtb
38359 bytes read in 18 ms (2 MiB/s)
Kernel image @ 0x80800000 [ 0x000000 - 0x552d48 ]
## Flattened Device Tree blob at 83000000
Booting using the fdt blob at 0x83000000
Using Device Tree in place at 83000000, end 8300c5d6
switch to ldo_bypass mode!
## else Transferring control to Linux (at address 80800000)...

DEBUG: =====Starting kernel ...

DEBUG: Before bootstage_mark_name
DEBUG: after bootstage_mark_name
DEBUG: Before cleanup_before_linux
DEBUG: After cleanup_before_linux
==DEBUG: Before kernel_entry
Uncompressing Linux... done, booting the kernel.

Re: imx6sx RAM 512 stuck while flashing

rakesh_patel — Thu, 25 Jun 2020 18:07:32 GMT

Do i need to change this in dts file?

mmdc: mmdc@021b0000 {
compatible = "fsl,imx6sx-mmdc", "fsl,imx6q-mmdc";
reg = <0x021b0000 0x4000>;
};