openfirmware: move text cursor to top of screen before showing splashscreen

If we need to display some text during boot, it's nicer to have it on
top of the splashscreen, rather than scroll the display down.

Change-Id: I897073d31120ec3eebd2edc4632960db7eb7977d
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3596
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

openfirmware: fixup video driver for 64bit

We now have a bootsplash on sparc!

Change-Id: I583a3015a86618292088fe4379f548467d30ec4f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3572
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

openfirmware: more fixes for 64bit systems.

Gets call-method working for sparc, and fix more places where we
accidentally truncate 64bit values or sign-extend 32 bit ones.

Change-Id: Ic79c55ffa8d2b475858def1639004412f17dd0c1
Reviewed-on: https://review.haiku-os.org/c/haiku/+/1986
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>

Use fast clearing of visible screen for splash

memset uses rep stosb on x86 during boot, with memory
not set to write-combining, which makes it slow.

Instead we do aligned writes of 2 x four bytes at once.
Only clear the minimum of size and width * height * 4
UEFI framebuffer size can be huge, upto 512MB here,
and rep stosb seems to be around 25-30MB/s

This is written as generic as possible to work on
old compilers and different platforms, without
expecting boot memset to be optimized.

This makes it almost unnoticable compared to not
clearing.

Don't clear video mem on UEFI, efi video mode refactor

Writes to videomem is slow without memory remapping
Can't do the mapping without leaving UEFI, so skipping
the clear. Afaict it should always be cleared by UEFI

This saves ~10 seconds of booting on my machine
(1920*1080*4 bytes)

EFI video mode (should have been it's own commit)
* Only do strcmp if there are enough params
* break when found

Removed the addr_t conversion operators from FixedWidthPointer which makes comparison against NULL work properly.

Changes to kernel_args to make it identical for x86 and x86_64.

* Added a FixedWidthPointer template class which uses 64-bit storage to hold
a pointer. This is used in place of raw pointers in kernel_args.
* Added __attribute__((packed)) to kernel_args and all structures contained
within it. This is necessary due to different alignment behaviour for
32-bit and 64-bit compilation with GCC.
* With these changes, kernel_args will now come out the same size for both
the x86_64 kernel and the loader, excluding the preloaded_image structure
which has not yet been changed.
* Tested both an x86 GCC2 and GCC4 build, no problems caused by these changes.

boot_loader_openfirmware: Fetch EDID

Read the EDID from OF and pass it on to the kernel.

Last part of ticket #6105.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38307 a95241bf-73f2-0310-859d-f6bbb57e9c96

boot_loader_openfirmware: Add frame buffer support

Use the OF "screen" device alias to query frame buffer properties. Postpone
the opening of the device as far as possible as it erases the screen output.
Initialize the kernel arguments and hook into generic code to display the
splash screen.

Like on x86, the frame buffer is enabled by default. To disable it, either
press ESC during early boot or, for debugging, make sure in start.cpp that
platform_boot_options() has the BOOT_OPTION_DEBUG_OUTPUT flag set.

Resolves ticket #6105.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38306 a95241bf-73f2-0310-859d-f6bbb57e9c96

boot_loader_openfirmware: Preparations for frame buffer

Initialize the frame buffer as not enabled. Add checks for this condition
and for the debug boot option to the video functions.

Code is adapted from bios_ia32 platform. Part of ticket #6105.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38299 a95241bf-73f2-0310-859d-f6bbb57e9c96

boot_loader_openfirmware: Coding style fixes

Rearrange copyright notice, reorder #includes.

No functional changes yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38298 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Followed Ingo's suggestion and removed the now superfluous "length" correction
in ConsoleHandle::WriteAt().
* Updated license.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15581 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed the addr_t conversion operators from FixedWidthPointer which makes comparison against NULL work properly.

Changes to kernel_args to make it identical for x86 and x86_64.

* Added a FixedWidthPointer template class which uses 64-bit storage to hold
a pointer. This is used in place of raw pointers in kernel_args.
* Added __attribute__((packed)) to kernel_args and all structures contained
within it. This is necessary due to different alignment behaviour for
32-bit and 64-bit compilation with GCC.
* With these changes, kernel_args will now come out the same size for both
the x86_64 kernel and the loader, excluding the preloaded_image structure
which has not yet been changed.
* Tested both an x86 GCC2 and GCC4 build, no problems caused by these changes.

boot_loader_openfirmware: Fetch EDID

Read the EDID from OF and pass it on to the kernel.

Last part of ticket #6105.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38307 a95241bf-73f2-0310-859d-f6bbb57e9c96

boot_loader_openfirmware: Add frame buffer support

Use the OF "screen" device alias to query frame buffer properties. Postpone
the opening of the device as far as possible as it erases the screen output.
Initialize the kernel arguments and hook into generic code to display the
splash screen.

Like on x86, the frame buffer is enabled by default. To disable it, either
press ESC during early boot or, for debugging, make sure in start.cpp that
platform_boot_options() has the BOOT_OPTION_DEBUG_OUTPUT flag set.

Resolves ticket #6105.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38306 a95241bf-73f2-0310-859d-f6bbb57e9c96

boot_loader_openfirmware: Preparations for frame buffer

Initialize the frame buffer as not enabled. Add checks for this condition
and for the debug boot option to the video functions.

Code is adapted from bios_ia32 platform. Part of ticket #6105.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38299 a95241bf-73f2-0310-859d-f6bbb57e9c96

boot_loader_openfirmware: Coding style fixes

Rearrange copyright notice, reorder #includes.

No functional changes yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38298 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Followed Ingo's suggestion and removed the now superfluous "length" correction
in ConsoleHandle::WriteAt().
* Updated license.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15581 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed src/kernel to src/system.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12359 a95241bf-73f2-0310-859d-f6bbb57e9c96