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acpimem routines
get rid of _INI and _REG method calls, this is not full acpi environment
anyway and all we really want todo at kernel boot time is figuring out
the interrupt routing. aux/acpi can try to enable more stuff if it needs
to later when battery status desired.
dont snoop memory space regions in amlmapio(), this is just wrong as
amlmapio() is *lazily* mapping regions as they are accessed, so the
range table would never be really complete. instead, we provide generic
access to the physical address space, excluding kernel and user memory
with acpimem file.
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mpshutdown() used to call acpireset() making it impossible to build
a kernel without archacpi. now, mpshutdown() is a helper function
that only shuts down the application processors that gets used from
mpreset() and acpireset().
the generic machine reset code in exported by devarch's archreset()
function that is called by mpreset() and from acpireset() as a fallback.
so the code duplication that was in mpshutdown() is avoided.
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libaml comresses zero integer as nil, so remove the
nil check. this makes interrupts work in vmware with
efi.
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x230 booted in efi only (no csp) mode hangs
when traditional i8042reset() keyboard reset
is tried.
so we try acpireset() first which discoveres
and writes the acpi reset register.
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bootscreeninit(), fix rampage() usage
rampage() cannot be used after meminit(), so test for
conf.mem[0].npage != 0 and use xalloc()/mallocalign()
instead. this allows us to use vmap() early before
mmuinit() which is needed for bootscreeninit() and
acpi.
to get memory for page tables, pc64 needs a lowraminit().
with EFI, the RSDT pointer is passed in *acpi= parameter
from the efi loader. as the RSDT is ususally at the end of
the physical address space (and not to be found in
bios areas), we cannot KMAP() it so we need to vmap().
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(APIC) table (thanks erik)
according to erik, virtualbox puts the source overrides
before the ioapic entries so the addirq() call fails
as no ioapics have been declared yet. use a second pass
over the table after we processed the apic entries.
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distribute irqs in setuplink(), remove debug prints
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disabled LAPIC entries overwrote the bootstrap processor
apic causing the machine panic with: "no bootstrap processor".
(problem with lenovo X230)
just ignore entries that are disabled or collide with
entries already found. (should not happen)
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the issues with the previous tsc change where not related to the tsc
but where problems with timesync using an old frequency file. a
patch to fix timesync was commited, so so we reintroduce the *notsc=
again.
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doesnt seem to be reliable. also, separate tsc frequency measurement
and cpu loopconst measurement. turned out with *notsc=, the simplcycles()
calls would mess up loopconst.
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on terminal kernel (thank erik)
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we cannot assume theres only one instance of an acpi table. some
bios have multiple SSDT tables and we would only find the first
one.
now, we keep a second array to record the physical address of
the table visited by maptable(). load all instances to the
SSDT.
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on almost all machines, we get tons of these prints for pci busses that
are not physically there but are described in the ACPI namespace. the
reason that we enumerate these is because we do not enumerate _INI and _STA
methods to check if they are present. we just match the information with
the PCI devices we enumerated with our generic pci code. this works fine and
doesnt require aml code to poke arround in pci config space.
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replace the various functions that searched for bios data structures by
a single sigsearch() one in pc/memory.c that will probe the various bios
data areas.
also, a new checksum() function was added that is to be used to validate
the structures found.
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