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Kernel: Add reads/write to System CMOS to AML

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This commit is contained in:
Bananymous
2026-08-23 14:21:27 +03:00
parent cee65bd68e
commit 8eb572d038
1 changed files with 33 additions and 2 deletions
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kernel/kernel/ACPI/AML/OpRegion.cpp
+33 -2
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@@ -494,8 +494,23 @@ namespace Kernel::ACPI::AML
return TRY(embedded_controller->read_byte(offset));
}
case GAS::AddressSpaceID::SMBus:
case GAS::AddressSpaceID::SystemCMOS:
if (byte_offset >= 64)
{
dwarnln("CMOS read from offset 0x{H}", byte_offset);
return BAN::Error::from_errno(ENOTSUP);
}
switch (access_size)
{
case 1:
IO::outb(0x70, offset);
return IO::inb(0x71);
default:
dwarnln("{} byte read from CMOS offset {2H}", access_size, byte_offset);
return BAN::Error::from_errno(EINVAL);
}
ASSERT_NOT_REACHED();
case GAS::AddressSpaceID::SMBus:
case GAS::AddressSpaceID::PCIBarTarget:
case GAS::AddressSpaceID::IPMI:
case GAS::AddressSpaceID::GeneralPurposeIO:
@@ -581,8 +596,24 @@ namespace Kernel::ACPI::AML
TRY(embedded_controller->write_byte(offset, value));
return {};
}
case GAS::AddressSpaceID::SMBus:
case GAS::AddressSpaceID::SystemCMOS:
if (byte_offset >= 64)
{
dwarnln("CMOS write to offset 0x{H}", byte_offset);
return BAN::Error::from_errno(ENOTSUP);
}
switch (access_size)
{
case 1:
IO::outb(0x70, offset);
IO::outb(0x71, value);
break;
default:
dwarnln("{} byte write to CMOS offset {2H}", access_size, byte_offset);
return BAN::Error::from_errno(EINVAL);
}
return {};
case GAS::AddressSpaceID::SMBus:
case GAS::AddressSpaceID::PCIBarTarget:
case GAS::AddressSpaceID::IPMI:
case GAS::AddressSpaceID::GeneralPurposeIO: