backup uboot.bin support on DM8127 platform

Hello,

I will notify the IPNC team for help.

BR
Margarita

Hi pavel,

here is my partition table.
-----------------------------------------
1st partition - u-boot.min 1 (1st erase block)
- u-boot.min 2 (2nd erase block)
- u-boot.min 3 (3rd erase block)
------------------------------------------
2nd partition - u-boot.bin 1
------------------------------------------
3rd partition - u-boot.bin 2
------------------------------------------
4th partition - u-boot.bin 3
------------------------------------------
5th partition - Kernel
------------------------------------------
6th partition - File System
------------------------------------------
7th partition - backup Kernel
------------------------------------------
8th partition - backup File System
------------------------------------------

in case 1, if u-boot.min 1 is corrupted from partition table 1 another alternate u-boot.min 2 will take care for successful boot.
here my concept is clear about u-boot.min for ECC error and processor will read u-boot.min from next erase block.

in case 2, if u-boot.bin 1 is corrupted, u-boot.min will load u-boot.bin from next u-boot.bin partition until it found healthy binary.

here is my constraint that how u-boot.min will switch to u-boot.bin partition for successful boot in case of ECC mismatch.

regards,
Akash

Akash,

You can try to implement the "if esle fi" functionality from the 2nd stage u-boot.bin to the 1st stage u-boot.min, but be aware of the size of u-boot.min which is very restricted.

BR
Pavel

Pavel,

in second stage u-boot.bin there is "if else fi" command, which is useful during kernel ecc error.
i verified in first stage u-boot.min command line prompt with help command, there isn't any "if else fi "command.

regards
Akash

Akash,

Akash Gajjar said:

i verified in first stage u-boot.min command line prompt with help command, there isn't any "if else fi "command.

This is exactly what I am trying to explain in my previous post:

You can try to implement the "if esle fi" functionality from the 2nd stage u-boot.bin to the 1st stage u-boot.min, but be aware of the size of u-boot.min which is very restricted.

Hello pavel,

sorry,i didn't got your point.
here is my requirement. u-boot.min will identify healthy binary of second stage uboot from partitions 2, 3, or 4.
still i am in doubt how 1st stage u-boot will identify healthy binary of second stage uboot from partitions, can you suggest us by example how to implement functionality from max 2nd stage u-boot to the 1st stage.

regards,
Akash

Akash,

My point is to transplant the "if else fi" functionality from the 2nd stage u-boot code to the 1st stage u-boot code, then use this "if else fi" functionality in the 1st stage u-boot. I do not have an example for this.

BR
Pavel