Fix gcc2 comparison, and only align if not aligned (8 - 0)

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.

Switched boot splash compression to use boot_zlib (which was already
used by tarfs anyway) instead of RLE.
While this should allows larger logo/icons, it doesn't remove the
current 300000 bytes size limits for haiku_loader, so #6710 is not yet fixed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40215 a95241bf-73f2-0310-859d-f6bbb57e9c96

Move the boot images conditional selection in one place, to remove
possible mismatch images info between loader and kernel.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38947 a95241bf-73f2-0310-859d-f6bbb57e9c96

Enable development splash logo for "official" --distro_compatibility.
The official release one stay the well-known one, just renamed to show it's trademarked images.
Fixed #6183.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38891 a95241bf-73f2-0310-859d-f6bbb57e9c96

Utilize HAIKU_DISTRO_COMPATIBILITY for the boot splash. Currently only
'--distro-compatibility official' will result in the HAIKU logo being
displayed. When 'default' or 'compatible', only the icons will display. Due to
issues with generate_boot_screen, the "development" logo is not utilized.

Relates to #6183 and #6255


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37740 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Patch by Andreas Färber that removes unneeded includes, mostly ones that don't
even have to be available in the generic case. See bug #6105, patch 1 & 2.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37007 a95241bf-73f2-0310-859d-f6bbb57e9c96

Return B_OK on success.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32397 a95241bf-73f2-0310-859d-f6bbb57e9c96

Factor out the splash image display logic too.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32395 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.

Switched boot splash compression to use boot_zlib (which was already
used by tarfs anyway) instead of RLE.
While this should allows larger logo/icons, it doesn't remove the
current 300000 bytes size limits for haiku_loader, so #6710 is not yet fixed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40215 a95241bf-73f2-0310-859d-f6bbb57e9c96

Move the boot images conditional selection in one place, to remove
possible mismatch images info between loader and kernel.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38947 a95241bf-73f2-0310-859d-f6bbb57e9c96

Enable development splash logo for "official" --distro_compatibility.
The official release one stay the well-known one, just renamed to show it's trademarked images.
Fixed #6183.



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38891 a95241bf-73f2-0310-859d-f6bbb57e9c96

Utilize HAIKU_DISTRO_COMPATIBILITY for the boot splash. Currently only
'--distro-compatibility official' will result in the HAIKU logo being
displayed. When 'default' or 'compatible', only the icons will display. Due to
issues with generate_boot_screen, the "development" logo is not utilized.

Relates to #6183 and #6255


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37740 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Patch by Andreas Färber that removes unneeded includes, mostly ones that don't
even have to be available in the generic case. See bug #6105, patch 1 & 2.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37007 a95241bf-73f2-0310-859d-f6bbb57e9c96

Return B_OK on success.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32397 a95241bf-73f2-0310-859d-f6bbb57e9c96

Factor out the splash image display logic too.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@32395 a95241bf-73f2-0310-859d-f6bbb57e9c96