RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 12:38:12 +00:00
Code Issues Activity Actions

Kernel: Call ACPI reboot method first if possible

Browse source 
Now we call ACPI reboot method first if possible, and if ACPI reboot is
not available, we attempt to reboot via the keyboard controller.
This commit is contained in:
Liav A 2020-03-03 19:28:37 +02:00 • committed by Andreas Kling
parent 87582d5e63
commit 1b8cd6db7b
7 changed files with 32 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

21
Kernel/ACPI/ACPIStaticParser.cpp
View file

@ -102,28 +102,33 @@ namespace ACPI {
klog() << "ACPI: Fixed ACPI data, Revision " << sdt->revision << ", Length " << sdt->length << " bytes";
}
void StaticParser::do_acpi_reboot()
bool StaticParser::can_reboot()
{
// FIXME: Determine if we need to do MMIO/PCI/IO access to reboot, according to ACPI spec 6.2, Section 4.8.3.6
auto region = MM.allocate_kernel_region(m_fadt.page_base(), (PAGE_SIZE * 2), "ACPI Static Parser", Region::Access::Read);
auto* fadt = (const Structures::FADT*)region->vaddr().offset(m_fadt.offset_in_page().get()).as_ptr();
return fadt->h.revision >= 2;
}
void StaticParser::try_acpi_reboot()
{
// FIXME: Determine if we need to do MMIO/PCI/IO access to reboot, according to ACPI spec 6.2, Section 4.8.3.6
#ifdef ACPI_DEBUG
dbg() << "ACPI: Rebooting, Probing FADT (P @ " << m_fadt.ptr() << ")";
dbg() << "ACPI: Rebooting, Probing FADT (" << m_fadt << ")";
#endif
auto region = MM.allocate_kernel_region(m_fadt.page_base(), (PAGE_SIZE * 2), "ACPI Static Parser", Region::Access::Read);
auto* fadt = (const Structures::FADT*)region->vaddr().offset(m_fadt.offset_in_page().get()).as_ptr();
if (fadt->h.revision >= 2) {
klog() << "ACPI: Reboot, Sending value 0x" << String::format("%x", fadt->reset_value) << " to Port 0x" << String::format("%x", fadt->reset_reg.address);
IO::out8(fadt->reset_reg.address, fadt->reset_value);
} else {
klog() << "ACPI: Reboot, Not supported!";
}
ASSERT_NOT_REACHED(); /// If rebooting didn't work, halt.
klog() << "ACPI: Reboot, Not supported!";
}
void StaticParser::do_acpi_shutdown()
void StaticParser::try_acpi_shutdown()
{
klog() << "ACPI: Shutdown is not supported with the current configuration, Abort!";
ASSERT_NOT_REACHED();
}
size_t StaticParser::get_table_size(PhysicalAddress table_header)