Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Replace explicit calls to video methods with their respective variants
implemented with macros. This patch improves code readability. Reasoning
behind vidd_* is a sort of "video discipline".

List of macros is supposed to be complete--all methods of video_switch
ought to have their respective macros from now on.

Functionally, this code should be no-op. My intention is to leave current
behaviour of touched code as is.

No objections: rwatson
Silence on: freebsd-current@
Approved by: cognet

Remove the internal use of __packed and put it on the structures
themselves.

Reviewed by: nate, peter, warner, robert
Approved by: re (ken)

Move the source code for these two modules out of src/sys/modules.

add missing #include <sys/module.h>

Warning fix.

use __packed.

#if 0 out a variable only used in #if 0'd code to quiet a warning.

Disabled EGA/VGA 1bpp/4bpp modes support. This is not real fix, but this comes
back to support 8bpp mode.

Removed extra calculation for X position (PC-98 only).

Submitted by: chi@bd.mbn.or.jp (Chiharu Shibata)

Added PC-98 supports.

Submitted by: Chiharu Shibata <chi@bd.mbn.or.jp>,
Tomokazu HARADA <tkhara@osk4.3web.ne.jp> and
yokota

- Added support for 1bpp and 4bpp BMP files.
(PC98 part of the commit will follow.)

Submitted (50%) by: Chiharu Shibata <chi@bd.mbn.or.jp>

$Id$ -> $FreeBSD$

The second phase of syscons reorganization.

- Split syscons source code into manageable chunks and reorganize
some of complicated functions.

- Many static variables are moved to the softc structure.

- Added a new key function, PREV. When this key is pressed, the vty
immediately before the current vty will become foreground. Analogue
to PREV, which is usually assigned to the PrntScrn key.
PR: kern/10113
Submitted by: Christian Weisgerber <naddy@mips.rhein-neckar.de>

- Modified the kernel console input function sccngetc() so that it
handles function keys properly.

- Reorganized the screen update routine.

- VT switching code is reorganized. It now should be slightly more
robust than before.

- Added the DEVICE_RESUME function so that syscons no longer hooks the
APM resume event directly.

- New kernel configuration options: SC_NO_CUTPASTE, SC_NO_FONT_LOADING,
SC_NO_HISTORY and SC_NO_SYSMOUSE.
Various parts of syscons can be omitted so that the kernel size is
reduced.

SC_PIXEL_MODE
Made the VESA 800x600 mode an option, rather than a standard part of
syscons.

SC_DISABLE_DDBKEY
Disables the `debug' key combination.

SC_ALT_MOUSE_IMAGE
Inverse the character cell at the mouse cursor position in the text
console, rather than drawing an arrow on the screen.
Submitted by: Nick Hibma (n_hibma@FreeBSD.ORG)

SC_DFLT_FONT
makeoptions "SC_DFLT_FONT=_font_name_"
Include the named font as the default font of syscons. 16-line,
14-line and 8-line font data will be compiled in. This option replaces
the existing STD8X16FONT option, which loads 16-line font data only.

- The VGA driver is split into /sys/dev/fb/vga.c and /sys/isa/vga_isa.c.

- The video driver provides a set of ioctl commands to manipulate the
frame buffer.

- New kernel configuration option: VGA_WIDTH90
Enables 90 column modes: 90x25, 90x30, 90x43, 90x50, 90x60. These
modes are mot always supported by the video card.
PR: i386/7510
Submitted by: kbyanc@freedomnet.com and alexv@sui.gda.itesm.mx.

- The header file machine/console.h is reorganized; its contents is now
split into sys/fbio.h, sys/kbio.h (a new file) and sys/consio.h
(another new file). machine/console.h is still maintained for
compatibility reasons.

- Kernel console selection/installation routines are fixed and
slightly rebumped so that it should now be possible to switch between
the interanl kernel console (sc or vt) and a remote kernel console
(sio) again, as it was in 2.x, 3.0 and 3.1.

- Screen savers and splash screen decoders
Because of the header file reorganization described above, screen
savers and splash screen decoders are slightly modified. After this
update, /sys/modules/syscons/saver.h is no longer necessary and is
removed.

Print verbose messages when there is error.
Oked by: des

Make the splash screen alternate "fade out" and "fade in" action at
regular intervals, when the module is used as a screen saver.

Submitted by: asami

- Don't assume the line length in the video memory is always the same as
the screen width.
- Store the current video mode information in the `video_adapter' struct.
- The size of the `v_offscreensize' field in the VESA mode information
block is u_int16, not u_int8.

Oops, one line was accidentally commented out in the previous commit.

Add VESA mode support. If the VESA support is compiled into the kernel
or the VESA KLD is preloaded by the boot loader, you can load a 256 color
BMP file larger than 320x200.

Calculate the number of bitmap colors in the correct way.

The bug found by: Kevin Street <street@iname.com>

Update the pointer into the bitmap correctly. The previous code
had the pointer off by 4 bytes if the width of the bitmap is
a multiple of four.

Add splash screen module. This version has rather limited
capabilities, but should be a good start... Well, sort of.

It can handle W*ndows 256 color BMP file. (Other color depth probably
won't work.) The size of the image must be 320x200 or less. *sigh*