loader: rename gfx_interp_md to gfx_interp_ref

We have the call to gfx_interp_ref to bring in the .o so that we get the
linker set item to add the language bindings at the right time. Where we
call

loader: rename gfx_interp_md to gfx_interp_ref

We have the call to gfx_interp_ref to bring in the .o so that we get the
linker set item to add the language bindings at the right time. Where we
call it is not the right time... So the _ref name is better. Change it
before we have too many others like it.

Sponsored by: Netflix

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loader: Add prototype for gfx_interp_md

This function will be used to draw in the graphics bindings when the
loader is compiled with graphics (gfx) support. Provide definitions
for lua and the simpl

loader: Add prototype for gfx_interp_md

This function will be used to draw in the graphics bindings when the
loader is compiled with graphics (gfx) support. Provide definitions
for lua and the simple interpreter. 4th support is forthcoming.

Sponsored by: Netflix
Reviewed by: kevans, jhb
Differential Revision: https://reviews.freebsd.org/D43903

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Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

loader.efi: to preserve heap space, use AllocatePages() for shadow_fb

shadow FB size could be rather large and depends on resolution,
instead of using heap, allocate dedicated space outside of heap.

loader.efi: to preserve heap space, use AllocatePages() for shadow_fb

shadow FB size could be rather large and depends on resolution,
instead of using heap, allocate dedicated space outside of heap.

Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D33600
MFC after: 2 weeks

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loader: narrow the scope of gfx frame buffer wrt tg supported kernels

Store whether or not we found a vbefb module (eg, a tg supported kernel)
in the preloaded_file structure. This automatically res

loader: narrow the scope of gfx frame buffer wrt tg supported kernels

Store whether or not we found a vbefb module (eg, a tg supported kernel)
in the preloaded_file structure. This automatically resets on reload and
eliminates load_elf knowing about any gfx_* interface. Restrict this to
i386, which is the only place it's used. Update libi386 to check in the
preloaded_file struct. Eliminate this from the teken_gfx
structure. Rewrite the parsing code to be more inline. Check this from
the same place we check for a relocatable amd64 kernel.

Sponsored by: Netflix
Reviewed by: manu, tsoome
Differential Revision: https://reviews.freebsd.org/D33427

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loader: framebuffer should only be written into

Reading from Write Combining memory can be very-very slow. Try to use
shadow buffer to avoid such reads.

MFC after: 1 month
Differential Revision: ht

loader: framebuffer should only be written into

Reading from Write Combining memory can be very-very slow. Try to use
shadow buffer to avoid such reads.

MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33305

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loader: cursor off should restore display content

When drawing cursor, we should store original display
content because there may be image data we would like to restore
when the cursor is removed.

loader: cursor off should restore display content

When drawing cursor, we should store original display
content because there may be image data we would like to restore
when the cursor is removed.

PR: 254054
Reported by: Jose Luis Duran
MFC after: 3 days

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loader: use display pixel density for font autoselection

Calculate font size from 16 density independent pixels (dp) by using:
size = 16 * ppi/160 * display_factor

We are specifying font size 16dp,

loader: use display pixel density for font autoselection

Calculate font size from 16 density independent pixels (dp) by using:
size = 16 * ppi/160 * display_factor

We are specifying font size 16dp, and assuming 1dp = 160ppi.
Also apply scaling factor 2 (display_factor).

MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D28849

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loader: do not autoselect smaller font than 8x16 with high res display

The VT screen buffer size is calculated based on our default
built in (8x16) font.

With high-resolution display, we want to us

loader: do not autoselect smaller font than 8x16 with high res display

The VT screen buffer size is calculated based on our default
built in (8x16) font.

With high-resolution display, we want to use at least 8x16 font,
or we will have large unused areas on screen.

MFC after: 1 week

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loader: start kernel in text mode when there is no vbefb vt driver

If kernel is built without VT vbefb driver, make sure
we start kernel in text mode.

loader: implement framebuffer console

Draw console on efi.
Add vbe framebuffer for BIOS loader (vbe off, vbe on, vbe list,
vbe set xxx).
autoload font (/boot/fonts) based on resolution and font size

loader: implement framebuffer console

Draw console on efi.
Add vbe framebuffer for BIOS loader (vbe off, vbe on, vbe list,
vbe set xxx).
autoload font (/boot/fonts) based on resolution and font size.
Add command loadfont (set font by file) and
variable screen.font (set font by size). Pass loaded font to kernel.

Export variables:
screen.height
screen.width
screen.depth

Add gfx primitives to draw the screen and put png image on the screen.
Rework menu draw to iterate list of consoles to enamble device specific
output.

Probably something else I forgot...

Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D27420

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