Hi All,
Thanks for the response , we extracted the flash descriptor from the BIOS Image
using the ifdtool as below
./ifdtool -x ~/<BIOS_IMAGE>.bin
Peculiar firmware descriptor, assuming Ibex Peak compatibility.
Flash Region 0 (Flash Descriptor): 00000000 - 00000fff
Flash Region 1 (BIOS): 00001000 - 00efefff
Flash Region 2 (Intel ME): 07fff000 - 00000fff (unused)
Flash Region 3
(GbE): 07fff000 - 00000fff (unused)
Flash Region
4 (Platform Data): 07fff000 - 00000fff (unused)
Flash Region
5 (Reserved): 00eff000 - 00ffefff
Flash Region
6 (Reserved): 07fff000 - 00000fff (unused)
Flash Region
7 (Reserved): 07fff000 - 00000fff (unused)
Flash Region
8 (EC): 07fff000 - 00000fff (unused)
when we compile the core boot with the Flash Descriptor , we are getting the
below error
CBFS fallback/postcar
CBFS fallback/dsdt.aml
CBFS fallback/payload
DD Adding Intel Firmware Descriptor
IFDTOOL Unlocking Management Engine
Platform is: aplk
File build/coreboot.pre is 2097152 bytes
Peculiar firmware descriptor, assuming Ibex Peak compatibility.
Writing new image to build/coreboot.pre.new
CBFS coreboot.rom
CBFSLAYOUT coreboot.rom
This is a legacy image composed entirely of a single CBFS.
make: *** [build/coreboot.rom] Error 1
make: *** Deleting file `build/coreboot.rom'
Could you please point out where it went wrong , have we missed something
Thanks & Regards,
Antony
From: David Hendricks [mailto:david.hendri...@gmail.com]
Sent: Tuesday, September 18, 2018 8:48 PM
To: Antony AbeePrakash X V <antonyabee.prakas...@lnttechservices.com>
Cc: Coreboot <coreboot@coreboot.org>
Subject: Re: [coreboot] Coreboot for Apollolake
Hi Antony,
There are a few components which compose a complete firmware image for Intel
platforms: coreboot, FSP, microcode, management engine blob, and flash
descriptor are the most common ones.
For the flash descriptor, refer to the Apollo Lake SoC SPI and signed Master
Image Profile (SMIP) Programming Guide, docid 559702. Chapter 4 explains the
flash descriptor for Apollo Lake in detail.
Once you have created a flash descriptor, you can add it to the firmware image
using coreboot's config system (under "Chipset").
On Tue, Sep 18, 2018 at 1:43 AM Antony AbeePrakash X V
<antonyabee.prakas...@lnttechservices.com<mailto:antonyabee.prakas...@lnttechservices.com>>
wrote:
Hi,
We would like to build coreboot image for Apollo lake platform. We are using
* Coreboot-4.8.1
* Apollo lake Intel FSP_2_0
We have built the coreboot source and created coreboot.rom image with the below
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.
Is the coreboot.rom image is enough to flash ? Could you please provide
feedback on this ?
Thanks & Regards,
Antony
L&T Technology Services Ltd
www.LntTechservices.com<http://www.lnttechservices.com/>
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