Uboot | Partition Aml Dtb Verify Patition Error Result

This document explains how U-Boot handles the Aml (Amlogic) DTB (Device Tree Blob) partition verification, common verification errors, and how to interpret and resolve error results. It’s aimed at embedded Linux developers working with Amlogic-based boards running U-Boot.

| Error message | Likely cause | Immediate action | |---|---:|---| | Bad magic / Invalid format | Wrong wrapper/offset | Check partition offset and image format; repackage DTB | | CRC/Checksum failed | Corruption or wrong checksum | Reflash partition; verify checksum after write | | Signature invalid | Key mismatch or tampering | Update trusted key or re-sign DTB | | Read/IO error | Storage hardware issue | Run storage diagnostics; remap or replace medium | | FDT parse error | Corrupted or incompatible DTB | Test DTB in RAM; regenerate from DTS |

To diagnose, you need a serial connection to the UART pins of the Amlogic board (usually 115200 baud, 8N1). Boot the device and observe the log. Uboot Partition Aml Dtb Verify Patition Error Result

Example of a full error log:

U-Boot 2015.01-g03dd89b (Jan 10 2020 - 14:32:11 +0800)
DRAM:  2 GiB
MMC:   sd/emmc: 1
Partition: dtb not found
aml_dtb: verify partition dtb error result: -1
** File not found /dtb.img **
Starting kernel ...
 This document explains how U-Boot handles the Aml

Or:

Reading from mmc 0:4 (dtb)
Verifying DTB signature ... failed (error 0xffff)
Uboot Partition Aml Dtb Verify Patition Error Result -22

Key information: