Hi, On 11 April 2018 at 16:39, Raymond Yeung <rksye...@hotmail.com> wrote: > > I currently have a board that uses Intel Xeon D (previously codenamed > Broadwell DE). It boots up with BIOS/UEFI. I 'm exploring other oot-up > options here. > > > I'm not familiar with this early stage of system initialization. It seems > BIOS/UEFI to Linux needs to use PXE, with the need to configure DHCP (and > possibly Proxy DHCP), TFTP server PXELINUX, Linux initial RAM disk (initrd) > configuration file, and then Linux. Previously, I'd been using > Coreboot/UBOOT environment (as a user, not developer). Prerequisite seemed > much simpler. > > > A few questions - > > > Is there even a coreboot support for this CPU already available and stable > that I could download and reflash? Or are we talking about some serious > re-development? > Is it possible to go from BIOS/UEFI to UBOOT (on-board)? How?
Yes, this is supported in mainline U-Boot. It builds U-Boot as a payload for UEFI to load. Overview here: https://www.denx.de/wiki/U-Boot/X86 Full details here: http://git.denx.de/?p=u-boot.git;a=blob;f=doc/README.u-boot_on_efi;h=298b94e342e4cc389df587c45e8b4d067b0feaf3;hb=HEAD It is also possible to boot EFI applications (e.g. grub) on U-Boot: http://git.denx.de/?p=u-boot.git;a=blob;f=doc/README.uefi;h=7403be36146d2321b29d82bef306c9d322ab1910;hb=HEAD > Support for Secure Boot - would one approach be simpler than another? U-Boot has a secure boot implementation. > Am I even on the right track thinking this way? > > > Please let me know if this has already been discussed to the death here (or > elsewhere), and would appreciate a link/reference. > > > Thanks, > > Raymond Regards, Simon -- coreboot mailing list: email@example.com https://mail.coreboot.org/mailman/listinfo/coreboot