Re: [coreboot] Coreboot with an UEFI payload to boot (Clover) an Thinkpad X230 Hackintosh

[Zoran Stojsavljevic]

Hello Fred,
> > So in such a case you would replace/overwrite (in flash) UEFI BIOS
> > with Coreboot + payload Tiano Core, which will boot GRUB 2.0 from
> > drive, them show GRUB 2.0 boot menu with MacOS as one of the entries).
>
> It's a good idea, I'll work on it. Thank you very much.

This is 100% duable: Coreboot + payload Tiano Core (flash), which will
boot GRUB 2.0 from drive, then show GRUB 2.0 boot menu with original
MacOS (if you can overwrite Clover with GRUB 2.0, not affecting
MacOS).

I'll give you here the hint: you should see, using stock UEFI BIOS,
/boot/efi directory, which is FAT32 formatted (if you can enter BIOS
UEFI shell), where you can see either Clover executable (cloverx64.efi
or similar name), either grubx64.efi, if you correctly have
overwritten Clover with GRUB 2.0.

If you do not have ability to enter UEFI shell on stock UEFI BIOS, you
can, using original MacOS probably see /boot. and find there efi/
directory, And inspect it yourself (maybe you can from MacOS overwrite
Clover with GRUB 2.0, and do inspection at the spot).

As the addendum, you should take your Ubuntu HDD/SSD, installed with
SeaBIOS as payload, then using Coreboot + payload Tiano Core in flash,
reinstall from scratch Ubuntu (making it UEFI compatible).

In such a case, your SINGLE Coreboot + Tiano Core flash FW will
satisfy all your needs, since you will use x230 with various UEFI
compatible OSes. Either as multiboot OS system on large HDD/SSD,
either swapping drives with UEFI compatible OSes. Your choice. :-)

Zoran

On Fri, Dec 29, 2017 at 7:58 PM, my First name is Test And my last
Name is iPation  wrote:
> From: Zoran Stojsavljevic 
> Sent: Friday, December 29, 2017 7:16 PM
> To: my First name is Test And my last Name is iPation
> Cc: [e-mail]; ron minnich
> Subject: Re: [coreboot] Coreboot with an UEFI payload to boot (Clover) an
> Thinkpad X230 Hackintosh
> > Hi, I have a Thinkpad X230 with stock Bios,booting
> > macOS High Sierra, using Clover EFI boot loader.
> > And it's working great! Then I've went through the
> > process of installing Coreboot/Seabios + Ubuntu on
> > another disk, and it works like a charm too! However,
> > I would like to use Coreboot+payload instead of the
> > stock Bios, in order to boot Clover/macOS.
>
> Let me try to decipher this spaghetti mess... First/Last name + The
> Coreboot list!
>
> Sorry for the weird name.
>
> You have a Thinkpad X230 with Stock BIOS on your flash. This one
> worked well with your HDD/SSD, on which you have Clover EFI boot
> loader, booting MacOS.
>
> Yes.
>
> You recently made Coreboot + SeaBIOS, and programmed it to your flash,
> erasing/overwriting stock BIOS. Then you install on other HDD/SSD
> Ubuntu using Coreboot + SeaBIOS flash, and it worked like a charm.
>
> Yes.
>
> Now, when you return back your initial HDD/SSD with Clover EFI boot
> loader and MacOS, it does not boot. It does NOT. You are using
> (SeaBIOS) Legacy bootloader which could NOT boot UEFI (UEFI installed)
> based OS (in this case MacOS).
>
> No, I didn't returned back to my initial disk with macOS, because I know it
> wouldn't work.
> > I know there is TianoCore to boot UEFI systems.
> > Has anyone Tried something similar ?
>
> In order to make attempt to make your initial HDD/SSD (Clover EFI boot
> loader, booting MacOS) to work, you need to use Coreboot with Tiano
> Core payload. The problem here is how to pass Tiano Core thread of
> execution to Clover EFI boot loader (I have no slightest idea about
> that, and about Clover EFI bootloader).
>
> In the mean time, I've just tried Coreboot+TianoCore payload, in order to
> boot my Clover+macOS disk, it didn't work, just a black screen. But I didn't
> got my hopes up, I were just trying.
>
> My best guess it is similar to the problem if you had UEFI BIOS
> (programmed on flash) with GRUB 2.0 booting MacOS (I have no idea if
> this combination exists, I assume it does).
>
> Yes it does, with Grub compiled --with-platform=efi
>
> So in such a case you would replace/overwrite (in flash) UEFI BIOS
> with Coreboot + payload Tiano Core, which will boot GRUB 2.0 from
> drive, them show GRUB 2.0 boot menu with MacOS as one of the entries).
>
> It's a good idea, I'll work on it. Thank you very much.
>
> Fred
>
> I hope this helps... .. . I really do.
>
> Zoran
> _______
>
> On Fri, Dec 29, 2017 at 6:13 PM, my First name is Test And my last
> Name is iPation  wrote:
> > Hi, I have a Thinkpad X230 with stock Bios, booting macOS High Sierra,
> > using
> > Clover EFI boot loader. And it's working great!
> >
> > Then I've went through the process of installing Coreboot/Seabios + Ubuntu
> > on another disk, and it works like a charm too!
> >
> > However, I would like to use Coreboot+payload instead of the stock Bios,
> > in
> > order to boot Clover/macOS.
> >
> > I know there is TianoCore to boot UEFI systems. Has anyone Tried something
> > similar ?
> >
> > Thanks.
>
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