想改开机图片把ppm放到drivers/video/logo下编译完拷贝到开发板就启动不了了 整个过程没有异常，

冬狮郎666

U-Boot 2016.03-g4e04879 (Jan 15 2020 - 12:58:50 +0800)

CPU:   Freescale i.MX6ULL rev1.1 69 MHz (running at 396 MHz)
CPU:   Industrial temperature grade (-40C to 105C) at 43C
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: ATK-LCD-7-1024x600 (1024x600)
Video: 1024x600x24
In:    serial
Out:   serial
Err:   serial
switch to partitions #0, OK
mmc1(part 0) is current device
Net:   FEC1
Error: FEC1 address not set.

Normal Boot
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc1(part 0) is current device
switch to partitions #0, OK
mmc1(part 0) is current device
reading boot.scr
** Unable to read file boot.scr **
reading zImage
** Unable to read file zImage **
Booting from net ...
FEC1 Waiting for PHY auto negotiation to complete......... TIMEOUT !
*** ERROR: `ethaddr' not set
FEC1 Waiting for PHY auto negotiation to complete......... TIMEOUT !
FEC1 Waiting for PHY auto negotiation to complete......... TIMEOUT !
*** ERROR: `ethaddr' not set
FEC1 Waiting for PHY auto negotiation to complete......... TIMEOUT !
Bad Linux ARM zImage magic!
=>

无忧花开

查看提示信息是只启动到了uboot阶段，是不是EMMC只烧录了uboot？
修改开机logo的话，可以参考：

https://www.cnblogs.com/yuanguanghui/p/12590771.html