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-Write-Access-Permissions-for-SPI-Servicing.html 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: [email protected] <[email protected]> Sent: 07 May 2019 07:38 To: [email protected] Subject: [coreboot] Building Coreboot Image for Opencellular Hello, I'm Karthik working on Opencellular (https://code.fb.com/connectivity/introducing-opencellular-an-open-source-wireless-access-platform/). 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 -- [email protected]<mailto:[email protected]> To unsubscribe send an email to [email protected]<mailto:[email protected]>
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