Bad CRC for ramdisk when using large rootfs

[Yusuf Altıparmak]

Hello, I Have a demo board which has 8 GB ram. Trying to boot with ramdisk.
When I use large size ramdisk image (447.8 MiB), it's giving Bad CRC while
verifying checksum. When I use small size (49 MiB) its verifiying
successfully. What is the reason of it ?

The commands I use are,

tftp 2000000 uImage-------.bin
tftp 4000000 -------------.dtb
tftp 1000000000 ----------.rootfs.ext2.gz.u-boot
bootm 2000000 1000000000 4000000

u-boot logs are,

WARNING: adjusting available memory to 30000000

## Booting kernel from Legacy Image at 02000000 ...

   Image Name:   Linux-4.19.26+gc0c2141

   Image Type:   PowerPC Linux Kernel Image (gzip compressed)

   Data Size:    7139762 Bytes = 6.8 MiB

   Load Address: 00000000

   Entry Point:  00000000

   Verifying Checksum ... OK

## Loading init Ramdisk from Legacy Image at 00000000 ...

   Image Name:   fsl-image-networking-full-t1042d

   Image Type:   PowerPC Linux RAMDisk Image (uncompressed)

   Data Size:    469529163 Bytes = 447.8 MiB

   Load Address: 00000000

   Entry Point:  00000000

   Verifying Checksum ... Bad Data CRC

Ramdisk image is corrupt or invalid