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Kernel: Remove "non-operational" ACPI parser state

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If we don't support ACPI, just don't instantiate an ACPI parser.
This is way less confusing than having a special parser class whose
only purpose is to do nothing.

We now search for the RSDP in ACPI::initialize() instead of letting
the parser constructor do it. This allows us to defer the decision
to create a parser until we're sure we can make a useful one.
This commit is contained in:
Andreas Kling 2020-04-09 14:31:47 +02:00
parent d95362d8cd
commit 4644217094
13 changed files with 46 additions and 111 deletions
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4
Kernel/Time/HPET.cpp
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@ -118,7 +118,7 @@ bool HPET::test_and_initialize()
{
ASSERT(!HPET::initialized());
hpet_initialized = true;
auto hpet = ACPI::Parser::the().find_table("HPET");
auto hpet = ACPI::Parser::the()->find_table("HPET");
if (hpet.is_null())
return false;
klog() << "HPET @ " << hpet;
@ -141,7 +141,7 @@ bool HPET::test_and_initialize()
bool HPET::check_for_exisiting_periodic_timers()
{
auto hpet = ACPI::Parser::the().find_table("HPET");
auto hpet = ACPI::Parser::the()->find_table("HPET");
if (hpet.is_null())
return false;
auto region = MM.allocate_kernel_region(hpet.page_base(), (PAGE_SIZE * 2), "HPET Initialization", Region::Access::Read);