When the extended primary loader for CD was introduced in 2008-2009 it
used to load a relatively small secondary loader. Later the secondary
loader was integrated into the kernel, hence the primary loader had to
load the kernel which is 100kB+. The EDD BIOS specification allows to
read less than 0x80 sectors at once using Int 0x13 0x42 service. For a
512-byte sector this is less than 0x10000 bytes which is a 64kB limit.
The same limit of 64kB is reached on a CD with only 0x20 sectors,
because the sector size is 2048 bytes here. This commit changes the
maximum number of sectors that can be read by the loader at once from
0x7f to 0x20, i.e. reading is done in 64kB blocks now.
It is a formal requirement of UEFI spec that the stack is to be aligned
on 16 bytes on all calls to service routines. I changed eficall macro to
fstcall one in my previous commit. Due to differences in macro logic
that change broke UEFI boot on some platforms that do care about stack
alignment. This commit should fix the issue.
git-svn-id: svn://kolibrios.org@9253 a494cfbc-eb01-0410-851d-a64ba20cac60
* Detect last PCI bus via PCI Root Bridge IO protocol (uefi64kos only).
* fastcall macro by Tomasz is much cleaner than eficall from osdev board.
git-svn-id: svn://kolibrios.org@9227 a494cfbc-eb01-0410-851d-a64ba20cac60
UEFI firmware doesn't use VESA mode codes, so disable this check
for UEFI boot.
git-svn-id: svn://kolibrios.org@8284 a494cfbc-eb01-0410-851d-a64ba20cac60
Currently only uefi4kos loader initializes these variables. May be one
day BIOS loaders will load DEVICES.DAT file and initialize these vars
too, may be one day we will detect APIC IRQs via ACPI. But not today.
git-svn-id: svn://kolibrios.org@8117 a494cfbc-eb01-0410-851d-a64ba20cac60
* Now there is a config file with boot options, example included.
* Config, kernel and ramdisk are loaded from the disk, not compiled in.
* DEVICES.DAT file is also optionally loaded from the disk.
* Also, move the loader to /kernel/trunk/bootloader/uefi4kos.
git-svn-id: svn://kolibrios.org@8092 a494cfbc-eb01-0410-851d-a64ba20cac60
* Build fat1x, fat32, cdfs, after_win loaders.
* Set use_lba=1 by default in fat32 loader.
* Build kolibri.raw: flash / hdd image.
* Add example config.ini file.
* Add an option (config file and screen) to not load ramdisk image.
* Add an option (config file only) to set /sys path.
Now you can boot without a ramdisk from a storage that is supported
by the kernel itself, i.e. without loadable drivers. Thus you can not
load the system without a ramdisk from SATA/AHCI and USB drives.
git-svn-id: svn://kolibrios.org@8091 a494cfbc-eb01-0410-851d-a64ba20cac60
They appear in symbols file.
They don't require parentheses.
They are shorter.
git-svn-id: svn://kolibrios.org@7136 a494cfbc-eb01-0410-851d-a64ba20cac60
