Building Coreboot Image for Opencellular

Hello,

I'm Karthik working on Opencellular (https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wir...). I'm trying to build coreboot image for Opencellular Board. Finally, succeeded in building the image but with a WARNING message

** WARNING **
coreboot will be built without an Intel Firmware Descriptor.
Never write a complete coreboot.rom without an IFD to your
board's flash chip! You can use flashrom's IFD or layout
parameters to flash only to the BIOS region.

So my question is
1. Is it okay to flash the image with above WARNING message onto the board?

Help me to find a way.

Thank you, in advance.

[Ranga Rao]

Intel Firmware Descriptor will have date about

1.  read-write permissions for each region,
  2.  reserved space for vendor-specific data,
  3.  chipset configuration parameters (soft straps, cpu straps) are defined.

Your board will not boot if IFD is corrupted. About IFD

https://www.win-raid.com/t3553f39-Guide-Unlock-Intel-Flash-Descriptor-Read-W...

Assume your SPI chip is 8MB, and your coreboot image is 2MB. You need to ensure coreboot image is overwritten at the last 2 MB region of 8MB

So the descriptors are not corrupted which are at the region beginning of SPI image

-----Original Message-----
From: [e-mail] 
Sent: 07 May 2019 07:38
To: [e-mail]
Subject: [coreboot] Building Coreboot Image for Opencellular

Hello,

I'm Karthik working on Opencellular (https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wir...). I'm trying to build coreboot image for Opencellular Board. Finally, succeeded in building the image but with a WARNING message

** WARNING **

coreboot will be built without an Intel Firmware Descriptor.

Never write a complete coreboot.rom without an IFD to your board's flash chip! You can use flashrom's IFD or layout parameters to flash only to the BIOS region.

So my question is

1. Is it okay to flash the image with above WARNING message onto the board?

Help me to find a way.

Thank you, in advance.

_______________________________________________

coreboot mailing list -- [e-mail] To unsubscribe send an email to [e-mail]

[Alex Feinman]

OpenCellular project provides very decent Coreboot instructions. In particular, they suggest that you flash just the coreboot section of ROM as per https://github.com/Telecominfraproject/OpenCellular/wiki/How-to-coreboot#upd...

=====================
Updates can simply applied by using the coreboot flashrom tool and applying this patch.

Update FW partition A
flashrom --fmap -i RW_SECTION_A -w coreboot.rom
Update FW partition B
flashrom --fmap -i RW_SECTION_B -w coreboot.rom
=====================

If you do this, you won't need the descriptor as you are not overwriting the entire ROM
________________________________________
From: [e-mail] 
Sent: Monday, May 6, 2019 11:38 PM
To: [e-mail]
Subject: [coreboot] Building Coreboot Image for Opencellular

Hello,

I'm Karthik working on Opencellular (https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wir...). I'm trying to build coreboot image for Opencellular Board. Finally, succeeded in building the image but with a WARNING message

** WARNING **
coreboot will be built without an Intel Firmware Descriptor.
Never write a complete coreboot.rom without an IFD to your
board's flash chip! You can use flashrom's IFD or layout
parameters to flash only to the BIOS region.

So my question is
1. Is it okay to flash the image with above WARNING message onto the board?

Help me to find a way.

Thank you, in advance.
_______________________________________________
coreboot mailing list -- [e-mail]
To unsubscribe send an email to [e-mail]

[Zaolin]

Hey Karthik,

Every new Intel platform needs blobs. For OpenCellular you need to use
the Intel FSP for Baytrail, Intel ME, Microcode and Intel Flash Descriptor.

https://github.com/Telecominfraproject/OpenCellular/wiki/How-to-deploy-GBC-f...

Otherwise you will get a non working image, except you are just flashing
the BIOS region.

If you need more help, just ping me. Our company wrote the coreboot
support for Open Cellular

platform.

BR, Philipp

On 07.05.19 08:38, [e-mail] wrote:
> Hello,
>
> I'm Karthik working on Opencellular (https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wir...). I'm trying to build coreboot image for Opencellular Board. Finally, succeeded in building the image but with a WARNING message
>
> ** WARNING **
> coreboot will be built without an Intel Firmware Descriptor.
> Never write a complete coreboot.rom without an IFD to your
> board's flash chip! You can use flashrom's IFD or layout
> parameters to flash only to the BIOS region.
>
> So my question is
> Is it okay to flash the image with above WARNING message onto the board?
>
> Help me to find a way.
>
> Thank you, in advance.
> _______________________________________________
> coreboot mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]