How to modify RCW and recompile into the boot image ls1021a

[jiye]

Hi,

I have a standalone ls1021a and eMMC. I want to know

(1)

How am I able to create a boot image which contains RCW,PBL and uboot using LSDK1906. Once this is done how am I able to change settings of the RCW and recompile back into the boot image ? This boot image is for me to burn into the eMMC

or

(2)if there is a way to just compile the RCW file directly ,how to generate this file and then change some settings and then  add it into the boot image binary

[Pavel]

The first 72 bytes contains PBL preamble and RCW.

Have a great day,
Pavel Chubakov

[Pavel]

This .img file contains rcw. See the first codes in this .img file using a hex editor or binary viewer.

See attached snapshot.

Have a great day,
Pavel Chubakov

[jiye]

which codes translate into RCW in the attachment

[Pavel]

1. See the AN5184 about programming u-boot to eMMC/SD card using CodeWarrior for ARMv7 Flash programmer:

https://www.nxp.com/docs/en/application-note/AN5184.pdf

See also CodeWarrior for ARMv7 Release Note:

https://www.nxp.com/docs/en/release-note/CW-ARMv7-RN.pdf

2 and 3. The the following command can be used for RCW building:

flex-builder -c rcw -m ls1021atwr -b sd

See RCW using the following path:

/LSDK_1909/flexbuild_lsdk1909/packages/firmware/rcw/ls1021atwr

Usually we change RCW in the u-boot source folder:

/LSDK_1909/flexbuild_lsdk1909/packages/firmware/u-boot/board/freescale/ls1021atwr

Find .cfg files in this folder.

Use the following command for u-boot building:

flex-builder -c uboot -m ls1021atwr -b sd

Have a great day,
Pavel Chubakov

[dana_xiong]

Hi Pavel,

In /LSDK_1906/flexbuild_lsdk/packages/firmware/u-boot/board/freescale/ls1043ardb folder ,

modify ls1043ardb_rcw_sd.cfg file ,

use '"flex-builder -i mkfw -m ls1043ardb -b sd" command to recompile

find the modification failed 

How to compile the modify .cfg file?

Thanks & Best Regards !

Dana Xiong

[jiye]

Hi Pavel ,

I successfully built the uboot_ls1021atwr_sdcard_qspi.bin, how am I able to combine this and rcw image into uboot.img

[jiye]

(1)what is the difference between uboot.bin and uboot.img

(2)also after I successfully create the uboot folder where I can find the uboot.bin?

(3)also under the 

/LSDK_1909/flexbuild_lsdk1909/packages/firmware/u-boot/board/freescale/ls1021atwr

I see the following file which is used for my ls1021a standalnoe prototype.

dcu.c

Kconfig

ls1021atwr.c

ls102xa_pbi.cfg

ls102xa_rcw_sd_ifc.cfg

ls102xa_rcw_sd_qspi.cfg

MAINTAINERS

Makefile

psci.S

README

[Pavel]

See attached file. This file is available in LSDK 1909 folder.

Use the following command for build all firmware:

  flex-builder -m ls1043ardb -a arm64         # automatically build all firmware, linux, apps components and lsdk rootfs for ls1043ardb

Find .img file using the following path after the "flex-builder -i mkfw -m ls1021atwr -b sd" command:

LSDK_1909/flexbuild_lsdk1909/build/images/firmware_ls1021atwr_uboot_sdboot.img

Have a great day,
Pavel Chubakov

[jiye]

Hi Pavel,

I think I did no clarify clearly in the beginning. I only have a standalone ls1021a, eMMC, DDR and JTAG interface I do not have SD card slot in my new design board. I know flex-builder -i mkfw -m ls1021atwr -b sd"  will generate all image files but that are for the SD card image which is used by the TWR-LS1021a eva board.

(1) Can I use the firmware_ls1021atwr_uboot_sdboot.img to flash into the eMMC by using tools such as CodeWarrior?

(2) Can I change the RCW settings and recompile the binary and create a new boot image by using what mean?

(3) Where can I find the RCW file what format is it and how to recompile it into the uboot image

[Pavel]

Use the following commands for installing LSDK 1906 under Ubuntu 18.

1. sudo apt-get install git
2. tar xvzf flexbuild_lsdk1906.tgz
3. source setup.env
4. flex-builder -i mkrfs -a arm32
5. flex-builder -c linux -a arm32
6. Find the LS1021a RCW in u-boot source folder. Use the following path:

/LSDK_1906/flexbuild_lsdk1906/packages/firmware/u-boot/board/freescale/ls1021atwr

Change the LS1021a RCW for your task.

7. Use the following command for building .img file for booting from SD card:

flex-builder -i mkfw -m ls1021atwr -b sd

Find the firmware_ls1021atwr_uboot_sdboot.img file using the following path:

/LSDK_1906/flexbuild_lsdk1906/build/images/ This file contains RCW, PBL, u-boot, microcodes , kernel, .dtb and root file system.

Write this file using offset 8 on your MMC.

Have a great day,
Pavel Chubakov

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[jiye]

is the

flex-builder -i mkfw -m ls1021atwr -b sd

apply for eMMC too ?

Also again this is what I have under /flexbuild_lsdk1906/packages/firmware

I do not have anything called u-boot folder under this folder how to generate that folder here