Two breaking changes:
* fixup_kernel_commandline was removed by upstream
* GblEfiDeviceTreeMetadata's reserve field is removed, instead a `type`
variable is inserted earlier in the struct.
Both changes come from upstream GBL, update LK accordingly
Before this change, errno was "completely un-threadsafe" as the comment
states.
This changes errno to be threadsafe by making errno a thread local
variable.
Require the platform or arch to provide it. The default was pretty
obsolete, assuming a 32bit arch with a split 50/50 mapping. May as well
make it a forced arch thing so that it's known to be correct.
Had to define it for OR1K, it was already defined for all the other
(known) architectures.
-In a few places, rearrange some of the fields of some structures to
pack more nicely in 64bit environments.
-Convert C style comments to C++ style
No functional difference.
For newer SMP and modern cpus, just doing a full fpu context switch
is simpler and cheaper than dealing with the complexity of lazy fpu
context switch logic.
Plus this old logic was broken in the recent SMP-ification of the x86
code base. A functional version of this would be far more complex.
Some of the wrapper routines (printf, fprintf, etc) were defined in
stdio.c which is not necessarily compiled with the same compiler flags
concerning floating point support.
On some architectures (arm64, x86-64) this caused the wrapper routines
to clobber the floating point registers prior to getting into the
printf_engine.
It was found that QEMU process is often under D(Disk Sleep) state
after test fails due to timeout. This suggests that I/O is sometimes
extremely slow on github CI server. Hence increase test timeout to
5s for reliability.
Added platform_setup_system_table, where platform/vendor can
make arbitrary changes to UEFI's system table, overriding
any of the UEFI protocols with custom one.
This allows other components to reference basic UEFI types. Now
different platforms can provide their own override for certain UEFI
protocols.
To keep good include structure, all public headers are put under
include/uefi.
This function was previously put in anon namespace, making it
unavailable for other source files to consume. Since we made this
function an API for consumption, move outside anon namespace so
that linkers can find it.
* Sometimes apt-get install qemu fails with fetch error, run apt-get
update first to mitigate
* unittest.py often fails due to app shell not started in 0.5s, increase
timeout
A large pile of changes to the PC platform and x86 architecture that
facilitate SMP support. Tested in both 64 and 32bit on qemu and real
hardware all the way back through i486.
In legacy builds it's possible to boot on a cpu that doesn't appear to
have CR4 implemented (Am586 to be precise), but there's no features
needed to set, so it seems that this was architecturally okay.
32 and 64 bit:
- For now SMAP causes the mmu unit tests to fail, so disable.
- Make sure CR4.PGE is set if present.
- Make sure the rest of the system knows that user aspaces are available
on 32bit.
- Skip cpus in the MADT table that are not enabled
- Bump count to 16 cpus
- Move the spurious interrupt vector to 0xff since it needs to end in
0xf on <=P6.
- Fix an assert in local apic code when not using x2apic and starting
secondaries.
- Follow the spec a bit closer and wait up till a second for each
secondary core to start.
