Compared to version 10 this fixes a bunch of formatting issues, mostly
around structs/classes with attributes like [[gnu::packed]], and
incorrect insertion of spaces in parameter types ("T &"/"T &&").
I also removed a bunch of // clang-format off/on and FIXME comments that
are no longer relevant - on the other hand it tried to destroy a couple of
neatly formatted comments, so I had to add some as well.
Add a MappedROM::find_chunk_starting_with() helper since that's a very
common usage pattern in clients of this code.
Also convert MultiProcessorParser from a persistent singleton object
to a temporary object constructed via a failable factory function.
This was supposed to be the foundation for some kind of pre-kernel
environment, but nobody is working on it right now, so let's move
everything back into the kernel and remove all the confusion.
There was a frequently occurring pattern of "map this physical address
into kernel VM, then read from it, then unmap it again".
This new typed_map() encapsulates that logic by giving you back a
typed pointer to the kind of structure you're interested in accessing.
It returns a TypedMapping<T> that can be used mostly like a pointer.
When destroyed, the TypedMapping object will unmap the memory. :^)
More namespaces have been added to organize the declarations
in a more sensible way.
Also, a namespace StaticParsing has been added to allow early
access to ACPI tables.
uintptr_t is 32-bit or 64-bit depending on the target platform.
This will help us write pointer size agnostic code so that when the day
comes that we want to do a 64-bit port, we'll be in better shape.
As suggested by Joshua, this commit adds the 2-clause BSD license as a
comment block to the top of every source file.
For the first pass, I've just added myself for simplicity. I encourage
everyone to add themselves as copyright holders of any file they've
added or modified in some significant way. If I've added myself in
error somewhere, feel free to replace it with the appropriate copyright
holder instead.
Going forward, all new source files should include a license header.
Structures declarations changed __attribute__((__packed__))
to [[gnu::packed]] in ACPI & DMI definitions.
Also, declarations of array of pointers in ACPI RSDT/XSDT are correct
now. In addition to that, now we have a declaration of the ACPI MADT
table & the table entries.
ACPI subsystem includes 3 types of parsers that are created during
runtime, each one capable of parsing ACPI tables at different level.
ACPIParser is the most basic parser which is essentialy a parser that
can't parse anything useful, due to a user request to disable ACPI
support in a kernel boot parameter.
ACPIStaticParser is a derived class from ACPIParser, which is able to
parse only static data (e.g. FADT, HPET, MCFG and other tables), thus
making it not able to parse AML (ACPI Machine Language) nor to support
handling of hardware events and power management. This type of parser
can be created with a kernel boot parameter.
ACPIDynamicParser is a derived class from ACPIStaticParser, which
includes all the capabilities of the latter, but *should* implement an
AML interpretation, (by building the ACPI AML namespace) and handling
power & hardware events. Currently the methods to support AML
interpretation are not implemented.
This type of parser is created automatically during runtime if the user
didn't specify a boot parameter related to ACPI initialization.
Also, adding strncmp function definition in StdLib.h, to be able to use
it in ACPIStaticParser class.
