Switch T1024RDB NOR Flash From Current Bank To Alternate Bank

[gokhangocmen94]

Hello everyone,

I have a T1024RDB. In U-Boot console, I tried to upload a binary file (its name is "U-Boot.bin" that storages in SDK v1.7.)

Then, I reset T1024RDB and I can't see any message in serial port console. I guess this U-Boot.bin file has not equal functionality like original U-Boot that loaded in NOR Flash.

For now, I don't have any CodeWarrior TAP or any flash programmer. When i look at the NOR Flash memory map, I see these values:

0xeff40000	0xefffffff	U-Boot (current bank)	768 KB
0xeff20000	0xeff3ffff	U-Boot env (current bank)	128 KB
0xebf40000	0xebffffff	U-Boot (alternate bank)	768 KB
0xebf20000	0xebf3ffff	U-Boot env (alternate bank)	128 KB

Can I change my start address from current bank to alternate bank without using CodeWarrior TAP or Flash Programmer? If I switch it, Will be My problem solved?

Thanks.

[ufedor]

Refer to the QorIQ T1024 Reference Design Board Quick Start, 7.3 Switch detailed description:

[gokhangocmen94]

On the hardware, There are SW3 swithces numbered as 1-8. By default, Value of These SW3[6-8] switches was '110'.

Although I switched them '000' and '100', I couldn't see any message in my serial port console.

Is U-Boot loaded in the alternate bank?

[ufedor]

You have to set SW3[5-7] = OFF ON ON for virtual bank 4

[gokhangocmen94]

I tried it, but there was not any change. I have set these switches on the hardware, Is it enough?

[ufedor]

> I have set these switches on the hardware

What do you mean?

Please provide the board SWs screenshot.

[gokhangocmen94]

I don't have any SWs to provide screenshot.

I loaded a .bin file as Bootloader via TFTP. After I had loaded it, U-Boot was broken.

According to my guess, If I alter NOR flash bank as alternate bank, maybe U-Boot will be fixed. Is this possible without using CodeWarrior TAP?

[ufedor · Accepted solution]

You have to set SW3[5-7] = OFF ON ON for virtual bank 4

Current setting is ON ON ON

[gokhangocmen94]

Yes, I tried all combinations you said. After I had tried, I changed them as default values.

However, I tried again it, it works. But to work, I have to push reset button.

For example, I switched SW3[5-7] as OFF ON ON. And then, If I push power button, It doesn't work.

If I press the reset button after I press the power button, It works. What do you think of this?

Edit: Because of JTAG Device, I have to reset T1024RDB.

Thanks.

[burakorcun_ozka]

Gokhan,

When u-boot uploaded into the board prints startup logs, you can see which bank is active at that time.

According to NOR memory mapping you wrote, you can upload u-boot.bin for the board to alternative bank, not current bank. Then, regardless of changing switch to activate alternative bank, you can use 'cpld reset altbank' command to start  the board from alternative bank.