[Bug 254381] bootloader is very slow

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254381

--- Comment #16 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=21b5b8b38b1c606fb8f6b1b0e3549072b3c1d44d

commit 21b5b8b38b1c606fb8f6b1b0e3549072b3c1d44d
Author:     Toomas Soome <tsoome@FreeBSD.org>
AuthorDate: 2025-02-20 19:50:20 +0000
Commit:     Toomas Soome <tsoome@FreeBSD.org>
CommitDate: 2025-02-20 19:50:20 +0000

    loader.efi: add "gop blt <on|off>" command

    Some systems have very slow console output and it may be about either
    wrong memory attributes are set or gop->Blt() implementation is bad.

    We do not have good way to set memory attributes, but we can
    choose which Blt() to use (or we can set "gop off" to fall back on
    use of SimpleTextOutput protocol).

    This update adds argument for "gop" command to switch gop->Blt() use.
    Note, this update does not fix the problem, but allows us to try to
    understand the possible cause.

    PR:             254381
    Reported by:    Michael Galassi

    Reviewed by:    manu, imp
    Differential Revision:  https://reviews.freebsd.org/D49073

 stand/common/gfx_fb.c          | 10 +++++++++-
 stand/efi/loader/framebuffer.c | 26 +++++++++++++++++++++++---
 2 files changed, 32 insertions(+), 4 deletions(-)

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