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Kernel: Add option to force using only the bootloader framebuffer

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This allows forcing the use of only the framebuffer set up by the
bootloader and skips instantiating devices for any other graphics
cards that may be present.
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Tom 2022-01-05 14:45:29 -07:00 • committed by Linus Groh
parent 01b3666894
commit 785c10fda9
5 changed files with 84 additions and 54 deletions
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Base/usr/share/man/man7/boot_parameters.md
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@ -41,7 +41,7 @@ List of options:
but only if **`acpi`** is set to **`limited`** or **`on`**, and a `MADT` (APIC) table is available.
Otherwise, the kernel will fallback to use the i8259 PICs.
* **`fbdev`** - This parameter expects **`on`** or **`off`**.
* **`fbdev`** - This parameter expects one of the following values. **`on`**- Boot into the graphical environment (default). **`off`** - Boot into text mode. **`bootloader`** - Boot into the graphical environment, but only use the frame buffer set up by the bootloader and do not initialize any other graphics cards.
* **`force_pio`** - If present on the command line, the IDE controllers will be force into PIO mode when initialized IDE Channels on boot.