i.MX ProcessorsのトピックRe: imx6ull14x14evk

imx6ull14x14evk

2548903578 — Wed, 24 Mar 2021 01:23:29 GMT

Hollo,everyone I am using a board based on imx6ull14x14evk, ddr is 512M, EMMC is 8G. There is no problem with using the official downloaded mfg_tool to burn directly. But compiled with yocto, uboot and root files can be used. But zImage and dtb cannot be used. I just want to ask. Why can't yocto be compiled? The repo uses: repo init -u https://source.codeaurora.org/external/imx/fsl-arm-yocto-bsp -b imx-4.1-krogoth. The build is as follows: DISTRO=fsl-imx-x11 MACHINE=imx6ull14x14evk source fsl-setup-release.sh -b build, bitbake fsl-image-qt5. After it is completed, it cannot be used normally, and the kernel will have an error.Can I use other versions of the kernel?

Re: imx6ull14x14evk

Zhiming_Liu — Wed, 24 Mar 2021 02:14:52 GMT

你试一下L5.4.70_2.3.0,我们的新BSP都是兼容6ULL的

Zhiming

Re: imx6ull14x14evk

2548903578 — Wed, 24 Mar 2021 07:44:38 GMT

Hi,

因为我使用的板子除了emmc的位宽不一样，其他都一样，官方的下载工具也能直接使用，但是就是编译出来的yocto不能使用。还有就是我换过5.4.24-2.1.0这个版本也是不行。

Re: imx6ull14x14evk

Zhiming_Liu — Wed, 24 Mar 2021 07:49:46 GMT

你把错误信息贴上来

Re: imx6ull14x14evk

2548903578 — Thu, 25 Mar 2021 01:28:46 GMT

是5.4.24-2.1.0这个版本的错误信息吗

Re: imx6ull14x14evk

Zhiming_Liu — Thu, 25 Mar 2021 02:37:29 GMT

对

Re: imx6ull14x14evk

2548903578 — Thu, 25 Mar 2021 09:18:13 GMT

信息如下：
U-Boot 2020.04-5.4.24-2.1.0+g4979a99482 (Mar 25 2021 - 08:52:02 +0000)

CPU: i.MX6ULL rev1.1 792 MHz (running at 396 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 46C
Reset cause: POR
Model: i.MX6 ULL 14x14 EVK Board
Board: MX6ULL 14x14 EVK
DRAM: 512 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
Loading Environment from MMC... *** Warning - bad CRC, using default environment

[*]-Video Link 0 (480 x 272)
[0] lcdif@21c8000, video
In: serial
Out: serial
Err: serial
switch to partitions #0, OK
mmc1(part 0) is current device
Net: Could not get PHY for FEC1: addr 1
Could not get PHY for FEC1: addr 1
Get shared mii bus on ethernet@2188000

PS D:\desktop\6ull> uuu -b emmc_all D:\desktop\6ull\u-boot-emmc-2020.04-r0.imx D:\desktop\6ull\core-image-minimal-imx6ull14x14evk-20210325071354.rootfs.wic.bz2
uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.4.107-0-g9201dde

Success 0 Failure 0

1:11 1/ 1 [=================100%=================] SDP: boot -f D:\desktop\6ull\u-boot-emmc-2020.04-r0.imx

一直卡在这里下不进去。

Re: imx6ull14x14evk

2548903578 — Fri, 26 Mar 2021 02:08:46 GMT

当我使用4.1.15-2.10这个版本是uboot还是能使用的，而这个版本uboot都无法使用。

Re: imx6ull14x14evk

2548903578 — Mon, 29 Mar 2021 00:38:26 GMT

您知道这是为什么，还是说yocto编译出来和官网提供的mfg_tool的不一样。还有就是yocto的版本也有差异

Re: imx6ull14x14evk

Zhiming_Liu — Mon, 29 Mar 2021 07:49:20 GMT

首先L4和L5的版本差异很大，其次L5也是支持i.mx6ull的，编译出来的系统和demo系统可能会有一点差异，不过不会影响系统启动。你之前说emmc位宽不一样，你是修改改的内核还是uboot，如果位宽不一样，uboot和kernel的驱动代码都需要修改。

Re: imx6ull14x14evk

2548903578 — Mon, 29 Mar 2021 11:27:16 GMT

现在是这个版本的uboot都无法启动，暂时我没做任何修改，也不知道怎么修改，要修改什么。

Re: imx6ull14x14evk

2548903578 — Mon, 29 Mar 2021 12:08:47 GMT

U-Boot 2016.03-imx_v2016.03_4.1.15_2.0.0_ga+ga57b13b (Mar 23 2021 - 19:10:33 +0800)

CPU: Freescale i.MX6ULL rev1.1 69 MHz (running at 396 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 50C
Reset cause: POR
Board: MX6ULL 14x14 EVK
I2C: ready
DRAM: 512 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment

Display: TFT43AB (480x272)
Video: 480x272x24
In: serial
Out: serial
Err: serial
switch to partitions #0, OK
mmc1(part 0) is current device
Net: Board Net Initialization Failed
No ethernet found.
Boot from USB for mfgtools
Use default environment for mfgtools
Run bootcmd_mfg: run mfgtool_args;bootz ${loadaddr} ${initrd_addr} ${fdt_addr};
Hit any key to stop autoboot: 0
Bad Linux ARM zImage magic!
=>
=>
=> <INTERRUPT>
=>
=>
=>

4.1.15_2.0.0当我处在下载端是，还是可以进行输入的

Re: imx6ull14x14evk

2548903578 — Thu, 01 Apr 2021 01:10:52 GMT

Hi 非常感谢这两天您的回答，我换了L5.4.47_2.2.0这个版本后，现在板子已经可以正常的启动了，uboot和内核都没有问题。但还是有点疑惑，前面使用的版本按理说应该也是支持这个板子的才对,因为在选择的时候有imx6ull14x14evk这个板子。但是为什么就是不行呢，而且出现的问题也都不一样。那这样的话我该怎么快速的选择正确的版本号呢。因为要编译生成一个yocto的时间实在是太长了而且也很大，不可能每个版本都进行测试吧。希望您能回复一下，由衷的感谢!

Re: imx6ull14x14evk

Zhiming_Liu — Thu, 01 Apr 2021 02:10:32 GMT

目前我无法给出准确的原因，你看一下这个教程：https://source.codeaurora.org/external/imx/uboot-imx/tree/doc/README.log?h=imx_v2020.04_5.4.70_2.3.0

打开uboot的debug模式，看一下在下载的时候卡在了哪里