C6472 EVBoard I2C -> EMAC Bootloader

Arya Stark42598

Hello,

I have the EVM6472, and I'm trying to use the EMAC bootloader. The errata states that it doesn't work directly (it won't send a BootP packet), so I'm using the I2C bootloader first, as suggested.

The POST program given with the EVM seems to do just that - In the end, it calls the EMAC bootloader.

I've tried using it, and it didn't work (I still didn't get a BootP packet). Also, I tried re-writing the program to the eeprom, but I still can't see a packet.

Any ideas?

over 15 years ago

0 ArunMani over 15 years ago

TI__Genius 9915 points

Arya,

Are you using the i2c other boot and followed the steps as mentioned in the image handling utilities.doc file.

thanks,

arun

0 Arya Stark42598 over 15 years ago in reply to ArunMani

Intellectual 465 points

I'm using the I2C boot called EVM6472_post, in which the last command is to start the ethernet bootloader.

I've followed the instructions, and I know I'm loading the right file to the I2C (I can play with the leds :-) ).

0 ArunMani over 15 years ago in reply to Arya Stark42598

TI__Genius 9915 points

Please check the new POST that is just released. It has been verified fo the BOOTP packet transmission. Please let me know if that works.

http://www.einfochips.com/TI/evm6472-support.php

Please check the EVM6472 POST I2CROM Image in the above link.

Thanks,

Arun.

0 Arya Stark42598 over 15 years ago in reply to ArunMani

Intellectual 465 points

I have downloaded the new POST, and tried it, but I still get the same results - The leds go on and off, and it appears to be doing something, but I don't get a bootP message.

If it helps - The ethernet seems to work just fine afterwards (I use csl_emac), and I'm connected with a 100M connection.

0 ArunMani over 15 years ago in reply to Arya Stark42598

TI__Genius 9915 points

Let me try this today here and get back to you.

Arun

0 Amitkumar Solanki over 15 years ago in reply to Arya Stark42598

Expert 1070 points

Arya Stark said:

I'm connected with a 100M connection.

You will need a 1000 Mbps link to work with EMAC boot as the BOOTROM code assumes Gigabit mode when using RGMII.

Hope this will help you.

Thanks,

Amit

0 Arya Stark42598 over 15 years ago in reply to Amitkumar Solanki

Intellectual 465 points

I eventually got a Gigabit network card, and it really does work, and I get my BootP message.

Now - This is the I2C bootloader. If I change to EMAC bootloading (Bootloader option 9), I don't get a BootP message. Is there any reason for this? Do I have to use I2C before the EMAC bootloader or is it just some initialization that the I2C code does?

0 Amitkumar Solanki over 15 years ago in reply to Arya Stark42598

Expert 1070 points

Arya Stark said:

Now - This is the I2C bootloader. If I change to EMAC bootloading (Bootloader option 9), I don't get a BootP message. Is there any reason for this? Do I have to use I2C before the EMAC bootloader or is it just some initialization that the I2C code does?

Yes, The I2C bootloader code initializes the Ethernet PHY.... The reason that EMAC boot (bootmode 9 and 10) does not work is the bootp packet is released by DSP prior to Ethernet PHY Auto-negotiating the link.

Also, for board PCB version-04, the hardware strapping of Ethernet PHY is sets the PHY in RGMII to SGMII mode. This will disable MAC signals to RJ45 connector.

Once POST code executes, you can set the EMAC boot (bootmode 9) and perform WARM reset, so that ethernet PHY is not reset, but DSP resets to perform EMAC boot.

Hope this Helps.

Regards,

Amitkumar Solanki

(www.einfochips.com)

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C6472 EVBoard I2C -> EMAC Bootloader