[PATCH v2 00/19] bootstd: Add a bootmeth for ChromiumOS on x86

Bin Meng bmeng.cn at gmail.com
Wed Jul 12 13:54:18 CEST 2023

Hi Simon,

On Tue, Jun 20, 2023 at 4:23 PM Simon Glass <sjg at chromium.org> wrote:
> This series adds a simple bootmeth for ChromiumOS on x86. It uses zimage
> to boot the kernel.
> Full verified boot is not included at this stage - that is still a
> separate chunk of code to be brought into standard boot at some point.
> For now it just obtains the kernel and command line and boots. This should
> be enough to boot Chrome OS from coreboot on all x86 machines in
> circulation, although only Brya (2022) and Coral (2017) have been tested.
> ChromiumOS needs quite large kernel parameters, to hold the DM verity
> settings and other pieces. This makes it painful to modify just one
> parameter, since the whole cmdline must be adjusted at once. To cope with
> this, a new cmdline-editing feature is provided: the 'bootflow cmdline'
> command allows individual parameters to be added, modified and deleted.
> To deal with enabling debug console, a variant supports setting 'earlycon'
> and 'console' automatically. The 'bdinfo' command is updated to show
> serial-port info also.
> Booting the zimage is now done programmatically, rather than running
> through the command-line interface. Minor tweaks are made to the coreboot
> and coral config so that booting works correctly.
> Note that the ACPI tables are not updated with the required firmware
> information in this series, so a warning is shown on boot. This will be
> addressed later since it requires quite a bit of configuration.
> Finally, this fixes a recently introduced bug in unit testing and updates
> the algorithm to avoid running flat-tree tests which don't actually use
> the devicetree.
> Changes in v2:
> - Add a comment that this is not a full revert
> - Update host_bootdev.c too
> - Correct 'it not known' typo
> - Explain why the setup information is not behind an #ifdef
> - Add comment for copy_in()
> - Avoid multiplication on a boolean
> - Add a comment as to why @len is needed
> - Show error messages when something goes wrong
> - Add new patch to create a little more room for U-Boot on qemu-x86_64
> - Add new patch to switch x86 qemu to standard boot
> - Drop mention of NVMe support

v2 does not apply on top of u-boot/master, please rebase. Thanks!


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