[PATCH v2 0/4] x86: Improve support for chain-loading U-Boot

[Andy Shevchenko]

On Wed, Feb 19, 2020 at 4:46 AM Simon Glass <sjg at chromium.org> wrote:
>
> This little series adds a few checks into the code to allow better
> operation when booting a build from a previous-state loader such as
> coreboot.
>
> At present we have a 'coreboot' target but this runs very different code
> from the bare-metal targets, such as coral. There is very little in common
> between them.
>
> It is useful to be able to boot the same U-Boot on a device, with or
> without a first-stage bootloader. For example, with chromebook_coral, it
> is helpful for testing to be able to boot the same U-Boot (complete with
> FSP) on bare metal and from coreboot. It allows checking of things like
> CPU speed, comparing registers, ACPI tables and the like.
>
> The idea is to change ll_boot_init() to false, and rebuild without changing
> anything else.
>
> This series makes the most important changes to allow coral to boot on
> coreboot.

Is there any patchwork instance or branch which I may use for testing?

> Changes in v2:
> - Drop the other check in interrupt_init() which is not needed now
> - Drop patch 'dm: Avoid initing built-in devices when chain loading'
>
> Simon Glass (4):
>   x86: fsp: Allow skipping init code when chain loading
>   x86: apl: Skip init code when chain loading
>   x86: cpu: Skip init code when chain loading
>   pci: Avoid auto-config when chain loading
>
>  arch/x86/cpu/apollolake/fsp_s.c |  2 ++
>  arch/x86/cpu/cpu.c              |  4 +++-
>  arch/x86/cpu/i386/interrupt.c   |  6 ++++--
>  arch/x86/lib/fsp/fsp_dram.c     |  8 ++++++++
>  arch/x86/lib/fsp/fsp_graphics.c |  3 +++
>  arch/x86/lib/fsp2/fsp_dram.c    | 10 ++++++++++
>  arch/x86/lib/fsp2/fsp_init.c    |  2 +-
>  arch/x86/lib/init_helpers.c     |  3 +++
>  drivers/pci/pci-uclass.c        |  4 ++--
>  9 files changed, 36 insertions(+), 6 deletions(-)
>
> --
> 2.25.0.265.gbab2e86ba0-goog
>


-- 
With Best Regards,
Andy Shevchenko