LadybirdBrowser/ladybird
1
1
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-09-20 09:49:15 +03:00
Code Issues Packages Projects Releases Wiki Activity

Kernel: Merge ACPI::StaticParser into ACPI::Parser

Browse Source 
There's no need for StaticParser to be a separate thing from Parser.
This commit is contained in:
Andreas Kling 2020-04-09 18:15:02 +02:00
parent a3ca745b5a
commit 1c865ee8d4
Notes: sideshowbarker 2024-07-19 07:46:39 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/1c865ee8d41
9 changed files with 426 additions and 535 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Kernel/ACPI/ACPIDynamicParser.cpp
View File

@ -32,7 +32,7 @@ namespace ACPI {
DynamicParser::DynamicParser(PhysicalAddress rsdp)
: IRQHandler(9)
, StaticParser(rsdp)
, Parser(rsdp)
{
klog() << "ACPI: Dynamic Parsing Enabled, Can parse AML";
}

4
Kernel/ACPI/ACPIDynamicParser.h
View File

@ -27,7 +27,7 @@
#pragma once
#include <AK/RefPtr.h>
#include <Kernel/ACPI/ACPIStaticParser.h>
#include <Kernel/ACPI/ACPIParser.h>
#include <Kernel/Interrupts/IRQHandler.h>
#include <Kernel/Lock.h>
#include <Kernel/VM/PhysicalPage.h>
@ -38,7 +38,7 @@ namespace ACPI {
class DynamicParser final
: public IRQHandler
, public StaticParser {
, public Parser {
friend class Parser;
public:

406
Kernel/ACPI/ACPIParser.cpp
View File

@ -1,5 +1,6 @@
/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -26,6 +27,11 @@
#include <AK/StringView.h>
#include <Kernel/ACPI/ACPIParser.h>
#include <Kernel/PCI/Access.h>
#include <Kernel/VM/MemoryManager.h>
#include <Kernel/VM/TypedMapping.h>
#include <LibBareMetal/IO.h>
#include <LibBareMetal/StdLib.h>
namespace Kernel {
namespace ACPI {
@ -43,35 +49,407 @@ void Parser::set_the(Parser& parser)
s_acpi_parser = &parser;
}
static bool match_table_signature(PhysicalAddress table_header, const StringView& signature);
static PhysicalAddress search_table_in_xsdt(PhysicalAddress xsdt, const StringView& signature);
static PhysicalAddress search_table_in_rsdt(PhysicalAddress rsdt, const StringView& signature);
static bool validate_table(const Structures::SDTHeader&, size_t length);
void Parser::locate_static_data()
{
locate_main_system_description_table();
initialize_main_system_description_table();
init_fadt();
init_facs();
}
PhysicalAddress Parser::find_table(const StringView& signature)
{
#ifdef ACPI_DEBUG
dbg() << "ACPI: Calling Find Table method!";
#endif
for (auto p_sdt : m_sdt_pointers) {
auto sdt = map_typed<Structures::SDTHeader>(p_sdt);
#ifdef ACPI_DEBUG
dbg() << "ACPI: Examining Table @ P " << p_sdt;
#endif
if (!strncmp(sdt->sig, signature.characters_without_null_termination(), 4)) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Found Table @ P " << p_sdt;
#endif
return p_sdt;
}
}
return {};
}
void Parser::init_facs()
{
m_facs = find_table("FACS");
}
void Parser::init_fadt()
{
klog() << "ACPI: Initializing Fixed ACPI data";
klog() << "ACPI: Searching for the Fixed ACPI Data Table";
m_fadt = find_table("FACP");
ASSERT(!m_fadt.is_null());
auto sdt = map_typed<Structures::FADT>(m_fadt);
#ifdef ACPI_DEBUG
dbg() << "ACPI: FADT @ V " << sdt << ", P " << (void*)m_fadt.as_ptr();
#endif
klog() << "ACPI: Fixed ACPI data, Revision " << sdt->h.revision << ", Length " << sdt->h.length << " bytes";
klog() << "ACPI: DSDT " << PhysicalAddress(sdt->dsdt_ptr);
m_x86_specific_flags.cmos_rtc_not_present = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::CMOS_RTC_Not_Present);
m_x86_specific_flags.keyboard_8042 = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::PS2_8042);
m_x86_specific_flags.legacy_devices = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::Legacy_Devices);
m_x86_specific_flags.msi_not_supported = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::MSI_Not_Supported);
m_x86_specific_flags.vga_not_present = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::VGA_Not_Present);
m_hardware_flags.cpu_software_sleep = (sdt->flags & (u32)FADTFlags::FeatureFlags::CPU_SW_SLP);
m_hardware_flags.docking_capability = (sdt->flags & (u32)FADTFlags::FeatureFlags::DCK_CAP);
m_hardware_flags.fix_rtc = (sdt->flags & (u32)FADTFlags::FeatureFlags::FIX_RTC);
m_hardware_flags.force_apic_cluster_model = (sdt->flags & (u32)FADTFlags::FeatureFlags::FORCE_APIC_CLUSTER_MODEL);
m_hardware_flags.force_apic_physical_destination_mode = (sdt->flags & (u32)FADTFlags::FeatureFlags::FORCE_APIC_PHYSICAL_DESTINATION_MODE);
m_hardware_flags.hardware_reduced_acpi = (sdt->flags & (u32)FADTFlags::FeatureFlags::HW_REDUCED_ACPI);
m_hardware_flags.headless = (sdt->flags & (u32)FADTFlags::FeatureFlags::HEADLESS);
m_hardware_flags.low_power_s0_idle_capable = (sdt->flags & (u32)FADTFlags::FeatureFlags::LOW_POWER_S0_IDLE_CAPABLE);
m_hardware_flags.multiprocessor_c2 = (sdt->flags & (u32)FADTFlags::FeatureFlags::P_LVL2_UP);
m_hardware_flags.pci_express_wake = (sdt->flags & (u32)FADTFlags::FeatureFlags::PCI_EXP_WAK);
m_hardware_flags.power_button = (sdt->flags & (u32)FADTFlags::FeatureFlags::PWR_BUTTON);
m_hardware_flags.processor_c1 = (sdt->flags & (u32)FADTFlags::FeatureFlags::PROC_C1);
m_hardware_flags.remote_power_on_capable = (sdt->flags & (u32)FADTFlags::FeatureFlags::REMOTE_POWER_ON_CAPABLE);
m_hardware_flags.reset_register_supported = (sdt->flags & (u32)FADTFlags::FeatureFlags::RESET_REG_SUPPORTED);
m_hardware_flags.rtc_s4 = (sdt->flags & (u32)FADTFlags::FeatureFlags::RTC_s4);
m_hardware_flags.s4_rtc_status_valid = (sdt->flags & (u32)FADTFlags::FeatureFlags::S4_RTC_STS_VALID);
m_hardware_flags.sealed_case = (sdt->flags & (u32)FADTFlags::FeatureFlags::SEALED_CASE);
m_hardware_flags.sleep_button = (sdt->flags & (u32)FADTFlags::FeatureFlags::SLP_BUTTON);
m_hardware_flags.timer_value_extension = (sdt->flags & (u32)FADTFlags::FeatureFlags::TMR_VAL_EXT);
m_hardware_flags.use_platform_clock = (sdt->flags & (u32)FADTFlags::FeatureFlags::USE_PLATFORM_CLOCK);
m_hardware_flags.wbinvd = (sdt->flags & (u32)FADTFlags::FeatureFlags::WBINVD);
m_hardware_flags.wbinvd_flush = (sdt->flags & (u32)FADTFlags::FeatureFlags::WBINVD_FLUSH);
}
bool Parser::can_reboot()
{
auto fadt = map_typed<Structures::FADT>(m_fadt);
if (fadt->h.revision < 2)
return false;
return m_hardware_flags.reset_register_supported;
}
void Parser::access_generic_address(const Structures::GenericAddressStructure& structure, u32 value)
{
switch ((GenericAddressStructure::AddressSpace)structure.address_space) {
case GenericAddressStructure::AddressSpace::SystemIO: {
IOAddress address(structure.address);
dbg() << "ACPI: Sending value 0x" << String::format("%x", value) << " to " << address;
switch (structure.access_size) {
case (u8)GenericAddressStructure::AccessSize::QWord: {
dbg() << "Trying to send QWord to IO port";
ASSERT_NOT_REACHED();
break;
}
case (u8)GenericAddressStructure::AccessSize::Undefined: {
dbg() << "ACPI Warning: Unknown access size " << structure.access_size;
ASSERT(structure.bit_width != (u8)GenericAddressStructure::BitWidth::QWord);
ASSERT(structure.bit_width != (u8)GenericAddressStructure::BitWidth::Undefined);
dbg() << "ACPI: Bit Width - " << structure.bit_width << " bits";
address.out(value, structure.bit_width);
break;
}
default:
address.out(value, (8 << (structure.access_size - 1)));
break;
}
return;
}
case GenericAddressStructure::AddressSpace::SystemMemory: {
dbg() << "ACPI: Sending value 0x" << String::format("%x", value) << " to " << PhysicalAddress(structure.address);
switch ((GenericAddressStructure::AccessSize)structure.access_size) {
case GenericAddressStructure::AccessSize::Byte:
*map_typed<u8>(PhysicalAddress(structure.address)) = value;
break;
case GenericAddressStructure::AccessSize::Word:
*map_typed<u16>(PhysicalAddress(structure.address)) = value;
break;
case GenericAddressStructure::AccessSize::DWord:
*map_typed<u32>(PhysicalAddress(structure.address)) = value;
break;
case GenericAddressStructure::AccessSize::QWord: {
*map_typed<u64>(PhysicalAddress(structure.address)) = value;
break;
}
default:
ASSERT_NOT_REACHED();
}
return;
}
case GenericAddressStructure::AddressSpace::PCIConfigurationSpace: {
// According to the ACPI specification 6.2, page 168, PCI addresses must be confined to devices on Segment group 0, bus 0.
auto pci_address = PCI::Address(0, 0, ((structure.address >> 24) & 0xFF), ((structure.address >> 16) & 0xFF));
dbg() << "ACPI: Sending value 0x" << String::format("%x", value) << " to " << pci_address;
u32 offset_in_pci_address = structure.address & 0xFFFF;
if (structure.access_size == (u8)GenericAddressStructure::AccessSize::QWord) {
dbg() << "Trying to send QWord to PCI configuration space";
ASSERT_NOT_REACHED();
}
ASSERT(structure.access_size != (u8)GenericAddressStructure::AccessSize::Undefined);
PCI::raw_access(pci_address, offset_in_pci_address, (1 << (structure.access_size - 1)), value);
return;
}
default:
ASSERT_NOT_REACHED();
}
ASSERT_NOT_REACHED();
}
bool Parser::validate_reset_register()
{
// According to the ACPI spec 6.2, page 152, The reset register can only be located in I/O bus, PCI bus or memory-mapped.
auto fadt = map_typed<Structures::FADT>(m_fadt);
return (fadt->reset_reg.address_space == (u8)GenericAddressStructure::AddressSpace::PCIConfigurationSpace || fadt->reset_reg.address_space == (u8)GenericAddressStructure::AddressSpace::SystemMemory || fadt->reset_reg.address_space == (u8)GenericAddressStructure::AddressSpace::SystemIO);
}
void Parser::try_acpi_reboot()
{
InterruptDisabler disabler;
if (!can_reboot()) {
klog() << "ACPI: Reboot, Not supported!";
return;
}
#ifdef ACPI_DEBUG
dbg() << "ACPI: Rebooting, Probing FADT (" << m_fadt << ")";
#endif
auto fadt = map_typed<Structures::FADT>(m_fadt);
ASSERT(validate_reset_register());
access_generic_address(fadt->reset_reg, fadt->reset_value);
hang();
}
void Parser::try_acpi_shutdown()
{
klog() << "ACPI: Shutdown is not supported with the current configuration, Abort!";
}
size_t Parser::get_table_size(PhysicalAddress table_header)
{
InterruptDisabler disabler;
#ifdef ACPI_DEBUG
dbg() << "ACPI: Checking SDT Length";
#endif
return map_typed<Structures::SDTHeader>(table_header)->length;
}
u8 Parser::get_table_revision(PhysicalAddress table_header)
{
InterruptDisabler disabler;
#ifdef ACPI_DEBUG
dbg() << "ACPI: Checking SDT Revision";
#endif
return map_typed<Structures::SDTHeader>(table_header)->revision;
}
void Parser::initialize_main_system_description_table()
{
#ifdef ACPI_DEBUG
dbg() << "ACPI: Checking Main SDT Length to choose the correct mapping size";
#endif
ASSERT(!m_main_system_description_table.is_null());
auto length = get_table_size(m_main_system_description_table);
auto revision = get_table_revision(m_main_system_description_table);
auto sdt = map_typed<Structures::SDTHeader>(m_main_system_description_table, length);
klog() << "ACPI: Main Description Table valid? " << validate_table(*sdt, length);
if (m_xsdt_supported) {
auto& xsdt = (const Structures::XSDT&)*sdt;
klog() << "ACPI: Using XSDT, Enumerating tables @ " << m_main_system_description_table;
klog() << "ACPI: XSDT Revision " << revision << ", Total length - " << length;
#ifdef ACPI_DEBUG
dbg() << "ACPI: XSDT pointer @ V " << xsdt;
#endif
for (u32 i = 0; i < ((length - sizeof(Structures::SDTHeader)) / sizeof(u64)); i++) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Found new table [" << i << "], @ V 0x" << String::format("%x", &xsdt.table_ptrs[i]) << " - P 0x" << String::format("%x", xsdt.table_ptrs[i]);
#endif
m_sdt_pointers.append(PhysicalAddress(xsdt.table_ptrs[i]));
}
} else {
auto& rsdt = (const Structures::RSDT&)*sdt;
klog() << "ACPI: Using RSDT, Enumerating tables @ " << m_main_system_description_table;
klog() << "ACPI: RSDT Revision " << revision << ", Total length - " << length;
#ifdef ACPI_DEBUG
dbg() << "ACPI: RSDT pointer @ V " << rsdt;
#endif
for (u32 i = 0; i < ((length - sizeof(Structures::SDTHeader)) / sizeof(u32)); i++) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Found new table [" << i << "], @ V 0x" << String::format("%x", &rsdt.table_ptrs[i]) << " - P 0x" << String::format("%x", rsdt.table_ptrs[i]);
#endif
m_sdt_pointers.append(PhysicalAddress(rsdt.table_ptrs[i]));
}
}
}
void Parser::locate_main_system_description_table()
{
auto rsdp = map_typed<Structures::RSDPDescriptor20>(m_rsdp);
if (rsdp->base.revision == 0) {
m_xsdt_supported = false;
} else if (rsdp->base.revision >= 2) {
if (rsdp->xsdt_ptr != (u64) nullptr) {
m_xsdt_supported = true;
} else {
m_xsdt_supported = false;
}
}
if (!m_xsdt_supported) {
m_main_system_description_table = PhysicalAddress(rsdp->base.rsdt_ptr);
} else {
m_main_system_description_table = PhysicalAddress(rsdp->xsdt_ptr);
}
}
Parser::Parser(PhysicalAddress rsdp)
: m_rsdp(rsdp)
{
klog() << "ACPI: Using RSDP @ " << rsdp;
locate_static_data();
}
static PhysicalAddress find_rsdp_in_ebda(u16 ebda_segment)
{
auto rsdp_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)(ebda_segment << 4))), PAGE_ROUND_UP(1024), "ACPI Static Parser RSDP Finding #1", Region::Access::Read, false, true);
char* p_rsdp_str = (char*)(PhysicalAddress(ebda_segment << 4).as_ptr());
for (char* rsdp_str = (char*)rsdp_region->vaddr().offset(offset_in_page((u32)(ebda_segment << 4))).as_ptr(); rsdp_str < (char*)(rsdp_region->vaddr().offset(offset_in_page((u32)(ebda_segment << 4))).get() + 1024); rsdp_str += 16) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Looking for RSDP in EBDA @ V " << (void*)rsdp_str << ", P " << (void*)p_rsdp_str;
#endif
if (!strncmp("RSD PTR ", rsdp_str, strlen("RSD PTR ")))
return PhysicalAddress((FlatPtr)p_rsdp_str);
p_rsdp_str += 16;
}
return {};
}
static PhysicalAddress find_rsdp_in_bios_area()
{
auto rsdp_region = MM.allocate_kernel_region(PhysicalAddress(0xE0000), PAGE_ROUND_UP(0xFFFFF - 0xE0000), "ACPI Static Parser RSDP Finding #2", Region::Access::Read, false, true);
char* p_rsdp_str = (char*)(PhysicalAddress(0xE0000).as_ptr());
for (char* rsdp_str = (char*)rsdp_region->vaddr().offset(offset_in_page((u32)(0xE0000))).as_ptr(); rsdp_str < (char*)(rsdp_region->vaddr().offset(offset_in_page((u32)(0xE0000))).get() + (0xFFFFF - 0xE0000)); rsdp_str += 16) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Looking for RSDP in BIOS ROM area @ V " << (void*)rsdp_str << ", P " << (void*)p_rsdp_str;
#endif
if (!strncmp("RSD PTR ", rsdp_str, strlen("RSD PTR ")))
return PhysicalAddress((FlatPtr)p_rsdp_str);
p_rsdp_str += 16;
}
return {};
}
static bool validate_table(const Structures::SDTHeader& v_header, size_t length)
{
u8 checksum = 0;
auto* sdt = (const u8*)&v_header;
for (size_t i = 0; i < length; i++)
checksum += sdt[i];
if (checksum == 0)
return true;
return false;
}
PhysicalAddress StaticParsing::find_rsdp()
{
auto ebda_seg_ptr = map_typed<u16>(PhysicalAddress(0x40e));
klog() << "ACPI: Probing EBDA, Segment 0x" << String::format("%x", *ebda_seg_ptr);
auto rsdp = find_rsdp_in_ebda(*ebda_seg_ptr);
if (!rsdp.is_null())
return rsdp;
return find_rsdp_in_bios_area();
}
PhysicalAddress StaticParsing::find_table(PhysicalAddress rsdp_address, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto rsdp = map_typed<Structures::RSDPDescriptor20>(rsdp_address);
if (rsdp->base.revision == 0)
return search_table_in_rsdt(PhysicalAddress(rsdp->base.rsdt_ptr), signature);
if (rsdp->base.revision >= 2) {
if (rsdp->xsdt_ptr)
return search_table_in_xsdt(PhysicalAddress(rsdp->xsdt_ptr), signature);
return search_table_in_rsdt(PhysicalAddress(rsdp->base.rsdt_ptr), signature);
}
ASSERT_NOT_REACHED();
}
static PhysicalAddress search_table_in_xsdt(PhysicalAddress xsdt_address, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto xsdt = map_typed<Structures::XSDT>(xsdt_address);
for (size_t i = 0; i < ((xsdt->h.length - sizeof(Structures::SDTHeader)) / sizeof(u64)); ++i) {
if (match_table_signature(PhysicalAddress((FlatPtr)xsdt->table_ptrs[i]), signature))
return PhysicalAddress((FlatPtr)xsdt->table_ptrs[i]);
}
return {};
}
static bool match_table_signature(PhysicalAddress table_header, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto table = map_typed<Structures::RSDT>(table_header);
return !strncmp(table->h.sig, signature.characters_without_null_termination(), 4);
}
static PhysicalAddress search_table_in_rsdt(PhysicalAddress rsdt_address, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto rsdt = map_typed<Structures::RSDT>(rsdt_address);
for (u32 i = 0; i < ((rsdt->h.length - sizeof(Structures::SDTHeader)) / sizeof(u32)); i++) {
if (match_table_signature(PhysicalAddress((FlatPtr)rsdt->table_ptrs[i]), signature))
return PhysicalAddress((FlatPtr)rsdt->table_ptrs[i]);
}
return {};
}
void Parser::enable_aml_interpretation()
{
klog() << "ACPI: No AML Interpretation Allowed";
ASSERT_NOT_REACHED();
}
void Parser::enable_aml_interpretation(File&)
{
klog() << "ACPI: No AML Interpretation Allowed";
ASSERT_NOT_REACHED();
}
void Parser::enable_aml_interpretation(u8*, u32)
{
klog() << "ACPI: No AML Interpretation Allowed";
ASSERT_NOT_REACHED();
}
void Parser::disable_aml_interpretation()
{
klog() << "ACPI Limited: No AML Interpretation Allowed";
ASSERT_NOT_REACHED();
}
const FADTFlags::HardwareFeatures& Parser::hardware_features() const
{
klog() << "ACPI Limited: Hardware features cannot be obtained";
ASSERT_NOT_REACHED();
}
const FADTFlags::x86_Specific_Flags& Parser::x86_specific_flags() const
{
klog() << "ACPI Limited: x86 specific features cannot be obtained";
ASSERT_NOT_REACHED();
}
}
}

38
Kernel/ACPI/ACPIParser.h
View File

@ -47,15 +47,15 @@ public:
set_the(*new ParserType(rsdp));
}
virtual PhysicalAddress find_table(const StringView& signature) = 0;
virtual PhysicalAddress find_table(const StringView& signature);
virtual void try_acpi_reboot() = 0;
virtual bool can_reboot() = 0;
virtual void try_acpi_shutdown() = 0;
virtual bool can_shutdown() = 0;
virtual void try_acpi_reboot();
virtual bool can_reboot();
virtual void try_acpi_shutdown();
virtual bool can_shutdown() { return false; }
virtual const FADTFlags::HardwareFeatures& hardware_features() const = 0;
virtual const FADTFlags::x86_Specific_Flags& x86_specific_flags() const = 0;
const FADTFlags::HardwareFeatures& hardware_features() const { return m_hardware_flags; }
const FADTFlags::x86_Specific_Flags& x86_specific_flags() const { return m_x86_specific_flags; }
virtual void enable_aml_interpretation();
virtual void enable_aml_interpretation(File&);
@ -63,10 +63,32 @@ public:
virtual void disable_aml_interpretation();
protected:
Parser() {}
explicit Parser(PhysicalAddress rsdp);
private:
static void set_the(Parser&);
void locate_static_data();
void locate_main_system_description_table();
void initialize_main_system_description_table();
size_t get_table_size(PhysicalAddress);
u8 get_table_revision(PhysicalAddress);
void init_fadt();
void init_facs();
bool validate_reset_register();
void access_generic_address(const Structures::GenericAddressStructure&, u32 value);
PhysicalAddress m_rsdp;
PhysicalAddress m_main_system_description_table;
Vector<PhysicalAddress> m_sdt_pointers;
PhysicalAddress m_fadt;
PhysicalAddress m_facs;
bool m_xsdt_supported { false };
FADTFlags::HardwareFeatures m_hardware_flags;
FADTFlags::x86_Specific_Flags m_x86_specific_flags;
};
}

432
Kernel/ACPI/ACPIStaticParser.cpp
View File

@ -1,432 +0,0 @@
/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/StringView.h>
#include <Kernel/ACPI/ACPIStaticParser.h>
#include <Kernel/PCI/Access.h>
#include <Kernel/VM/MemoryManager.h>
#include <Kernel/VM/TypedMapping.h>
#include <LibBareMetal/IO.h>
#include <LibBareMetal/StdLib.h>
//#define ACPI_DEBUG
namespace Kernel {
namespace ACPI {
static bool match_table_signature(PhysicalAddress table_header, const StringView& signature);
static PhysicalAddress search_table_in_xsdt(PhysicalAddress xsdt, const StringView& signature);
static PhysicalAddress search_table_in_rsdt(PhysicalAddress rsdt, const StringView& signature);
static bool validate_table(const Structures::SDTHeader&, size_t length);
void StaticParser::locate_static_data()
{
locate_main_system_description_table();
initialize_main_system_description_table();
init_fadt();
init_facs();
}
PhysicalAddress StaticParser::find_table(const StringView& signature)
{
#ifdef ACPI_DEBUG
dbg() << "ACPI: Calling Find Table method!";
#endif
for (auto p_sdt : m_sdt_pointers) {
auto sdt = map_typed<Structures::SDTHeader>(p_sdt);
#ifdef ACPI_DEBUG
dbg() << "ACPI: Examining Table @ P " << p_sdt;
#endif
if (!strncmp(sdt->sig, signature.characters_without_null_termination(), 4)) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Found Table @ P " << p_sdt;
#endif
return p_sdt;
}
}
return {};
}
void StaticParser::init_facs()
{
m_facs = find_table("FACS");
}
const FADTFlags::HardwareFeatures& StaticParser::hardware_features() const
{
return m_hardware_flags;
}
const FADTFlags::x86_Specific_Flags& StaticParser::x86_specific_flags() const
{
return m_x86_specific_flags;
}
void StaticParser::init_fadt()
{
klog() << "ACPI: Initializing Fixed ACPI data";
klog() << "ACPI: Searching for the Fixed ACPI Data Table";
m_fadt = find_table("FACP");
ASSERT(!m_fadt.is_null());
auto sdt = map_typed<Structures::FADT>(m_fadt);
#ifdef ACPI_DEBUG
dbg() << "ACPI: FADT @ V " << sdt << ", P " << (void*)m_fadt.as_ptr();
#endif
klog() << "ACPI: Fixed ACPI data, Revision " << sdt->h.revision << ", Length " << sdt->h.length << " bytes";
klog() << "ACPI: DSDT " << PhysicalAddress(sdt->dsdt_ptr);
m_x86_specific_flags.cmos_rtc_not_present = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::CMOS_RTC_Not_Present);
m_x86_specific_flags.keyboard_8042 = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::PS2_8042);
m_x86_specific_flags.legacy_devices = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::Legacy_Devices);
m_x86_specific_flags.msi_not_supported = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::MSI_Not_Supported);
m_x86_specific_flags.vga_not_present = (sdt->ia_pc_boot_arch_flags & (u8)FADTFlags::IA_PC_Flags::VGA_Not_Present);
m_hardware_flags.cpu_software_sleep = (sdt->flags & (u32)FADTFlags::FeatureFlags::CPU_SW_SLP);
m_hardware_flags.docking_capability = (sdt->flags & (u32)FADTFlags::FeatureFlags::DCK_CAP);
m_hardware_flags.fix_rtc = (sdt->flags & (u32)FADTFlags::FeatureFlags::FIX_RTC);
m_hardware_flags.force_apic_cluster_model = (sdt->flags & (u32)FADTFlags::FeatureFlags::FORCE_APIC_CLUSTER_MODEL);
m_hardware_flags.force_apic_physical_destination_mode = (sdt->flags & (u32)FADTFlags::FeatureFlags::FORCE_APIC_PHYSICAL_DESTINATION_MODE);
m_hardware_flags.hardware_reduced_acpi = (sdt->flags & (u32)FADTFlags::FeatureFlags::HW_REDUCED_ACPI);
m_hardware_flags.headless = (sdt->flags & (u32)FADTFlags::FeatureFlags::HEADLESS);
m_hardware_flags.low_power_s0_idle_capable = (sdt->flags & (u32)FADTFlags::FeatureFlags::LOW_POWER_S0_IDLE_CAPABLE);
m_hardware_flags.multiprocessor_c2 = (sdt->flags & (u32)FADTFlags::FeatureFlags::P_LVL2_UP);
m_hardware_flags.pci_express_wake = (sdt->flags & (u32)FADTFlags::FeatureFlags::PCI_EXP_WAK);
m_hardware_flags.power_button = (sdt->flags & (u32)FADTFlags::FeatureFlags::PWR_BUTTON);
m_hardware_flags.processor_c1 = (sdt->flags & (u32)FADTFlags::FeatureFlags::PROC_C1);
m_hardware_flags.remote_power_on_capable = (sdt->flags & (u32)FADTFlags::FeatureFlags::REMOTE_POWER_ON_CAPABLE);
m_hardware_flags.reset_register_supported = (sdt->flags & (u32)FADTFlags::FeatureFlags::RESET_REG_SUPPORTED);
m_hardware_flags.rtc_s4 = (sdt->flags & (u32)FADTFlags::FeatureFlags::RTC_s4);
m_hardware_flags.s4_rtc_status_valid = (sdt->flags & (u32)FADTFlags::FeatureFlags::S4_RTC_STS_VALID);
m_hardware_flags.sealed_case = (sdt->flags & (u32)FADTFlags::FeatureFlags::SEALED_CASE);
m_hardware_flags.sleep_button = (sdt->flags & (u32)FADTFlags::FeatureFlags::SLP_BUTTON);
m_hardware_flags.timer_value_extension = (sdt->flags & (u32)FADTFlags::FeatureFlags::TMR_VAL_EXT);
m_hardware_flags.use_platform_clock = (sdt->flags & (u32)FADTFlags::FeatureFlags::USE_PLATFORM_CLOCK);
m_hardware_flags.wbinvd = (sdt->flags & (u32)FADTFlags::FeatureFlags::WBINVD);
m_hardware_flags.wbinvd_flush = (sdt->flags & (u32)FADTFlags::FeatureFlags::WBINVD_FLUSH);
}
bool StaticParser::can_reboot()
{
auto fadt = map_typed<Structures::FADT>(m_fadt);
if (fadt->h.revision < 2)
return false;
return m_hardware_flags.reset_register_supported;
}
void StaticParser::access_generic_address(const Structures::GenericAddressStructure& structure, u32 value)
{
switch ((GenericAddressStructure::AddressSpace)structure.address_space) {
case GenericAddressStructure::AddressSpace::SystemIO: {
IOAddress address(structure.address);
dbg() << "ACPI: Sending value 0x" << String::format("%x", value) << " to " << address;
switch (structure.access_size) {
case (u8)GenericAddressStructure::AccessSize::QWord: {
dbg() << "Trying to send QWord to IO port";
ASSERT_NOT_REACHED();
break;
}
case (u8)GenericAddressStructure::AccessSize::Undefined: {
dbg() << "ACPI Warning: Unknown access size " << structure.access_size;
ASSERT(structure.bit_width != (u8)GenericAddressStructure::BitWidth::QWord);
ASSERT(structure.bit_width != (u8)GenericAddressStructure::BitWidth::Undefined);
dbg() << "ACPI: Bit Width - " << structure.bit_width << " bits";
address.out(value, structure.bit_width);
break;
}
default:
address.out(value, (8 << (structure.access_size - 1)));
break;
}
return;
}
case GenericAddressStructure::AddressSpace::SystemMemory: {
dbg() << "ACPI: Sending value 0x" << String::format("%x", value) << " to " << PhysicalAddress(structure.address);
switch ((GenericAddressStructure::AccessSize)structure.access_size) {
case GenericAddressStructure::AccessSize::Byte:
*map_typed<u8>(PhysicalAddress(structure.address)) = value;
break;
case GenericAddressStructure::AccessSize::Word:
*map_typed<u16>(PhysicalAddress(structure.address)) = value;
break;
case GenericAddressStructure::AccessSize::DWord:
*map_typed<u32>(PhysicalAddress(structure.address)) = value;
break;
case GenericAddressStructure::AccessSize::QWord: {
*map_typed<u64>(PhysicalAddress(structure.address)) = value;
break;
}
default:
ASSERT_NOT_REACHED();
}
return;
}
case GenericAddressStructure::AddressSpace::PCIConfigurationSpace: {
// According to the ACPI specification 6.2, page 168, PCI addresses must be confined to devices on Segment group 0, bus 0.
auto pci_address = PCI::Address(0, 0, ((structure.address >> 24) & 0xFF), ((structure.address >> 16) & 0xFF));
dbg() << "ACPI: Sending value 0x" << String::format("%x", value) << " to " << pci_address;
u32 offset_in_pci_address = structure.address & 0xFFFF;
if (structure.access_size == (u8)GenericAddressStructure::AccessSize::QWord) {
dbg() << "Trying to send QWord to PCI configuration space";
ASSERT_NOT_REACHED();
}
ASSERT(structure.access_size != (u8)GenericAddressStructure::AccessSize::Undefined);
PCI::raw_access(pci_address, offset_in_pci_address, (1 << (structure.access_size - 1)), value);
return;
}
default:
ASSERT_NOT_REACHED();
}
ASSERT_NOT_REACHED();
}
bool StaticParser::validate_reset_register()
{
// According to the ACPI spec 6.2, page 152, The reset register can only be located in I/O bus, PCI bus or memory-mapped.
auto fadt = map_typed<Structures::FADT>(m_fadt);
return (fadt->reset_reg.address_space == (u8)GenericAddressStructure::AddressSpace::PCIConfigurationSpace || fadt->reset_reg.address_space == (u8)GenericAddressStructure::AddressSpace::SystemMemory || fadt->reset_reg.address_space == (u8)GenericAddressStructure::AddressSpace::SystemIO);
}
void StaticParser::try_acpi_reboot()
{
InterruptDisabler disabler;
if (!can_reboot()) {
klog() << "ACPI: Reboot, Not supported!";
return;
}
#ifdef ACPI_DEBUG
dbg() << "ACPI: Rebooting, Probing FADT (" << m_fadt << ")";
#endif
auto fadt = map_typed<Structures::FADT>(m_fadt);
ASSERT(validate_reset_register());
access_generic_address(fadt->reset_reg, fadt->reset_value);
hang();
}
void StaticParser::try_acpi_shutdown()
{
klog() << "ACPI: Shutdown is not supported with the current configuration, Abort!";
}
size_t StaticParser::get_table_size(PhysicalAddress table_header)
{
InterruptDisabler disabler;
#ifdef ACPI_DEBUG
dbg() << "ACPI: Checking SDT Length";
#endif
return map_typed<Structures::SDTHeader>(table_header)->length;
}
u8 StaticParser::get_table_revision(PhysicalAddress table_header)
{
InterruptDisabler disabler;
#ifdef ACPI_DEBUG
dbg() << "ACPI: Checking SDT Revision";
#endif
return map_typed<Structures::SDTHeader>(table_header)->revision;
}
void StaticParser::initialize_main_system_description_table()
{
#ifdef ACPI_DEBUG
dbg() << "ACPI: Checking Main SDT Length to choose the correct mapping size";
#endif
ASSERT(!m_main_system_description_table.is_null());
auto length = get_table_size(m_main_system_description_table);
auto revision = get_table_revision(m_main_system_description_table);
auto sdt = map_typed<Structures::SDTHeader>(m_main_system_description_table, length);
klog() << "ACPI: Main Description Table valid? " << validate_table(*sdt, length);
if (m_xsdt_supported) {
auto& xsdt = (const Structures::XSDT&)*sdt;
klog() << "ACPI: Using XSDT, Enumerating tables @ " << m_main_system_description_table;
klog() << "ACPI: XSDT Revision " << revision << ", Total length - " << length;
#ifdef ACPI_DEBUG
dbg() << "ACPI: XSDT pointer @ V " << xsdt;
#endif
for (u32 i = 0; i < ((length - sizeof(Structures::SDTHeader)) / sizeof(u64)); i++) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Found new table [" << i << "], @ V 0x" << String::format("%x", &xsdt.table_ptrs[i]) << " - P 0x" << String::format("%x", xsdt.table_ptrs[i]);
#endif
m_sdt_pointers.append(PhysicalAddress(xsdt.table_ptrs[i]));
}
} else {
auto& rsdt = (const Structures::RSDT&)*sdt;
klog() << "ACPI: Using RSDT, Enumerating tables @ " << m_main_system_description_table;
klog() << "ACPI: RSDT Revision " << revision << ", Total length - " << length;
#ifdef ACPI_DEBUG
dbg() << "ACPI: RSDT pointer @ V " << rsdt;
#endif
for (u32 i = 0; i < ((length - sizeof(Structures::SDTHeader)) / sizeof(u32)); i++) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Found new table [" << i << "], @ V 0x" << String::format("%x", &rsdt.table_ptrs[i]) << " - P 0x" << String::format("%x", rsdt.table_ptrs[i]);
#endif
m_sdt_pointers.append(PhysicalAddress(rsdt.table_ptrs[i]));
}
}
}
void StaticParser::locate_main_system_description_table()
{
auto rsdp = map_typed<Structures::RSDPDescriptor20>(m_rsdp);
if (rsdp->base.revision == 0) {
m_xsdt_supported = false;
} else if (rsdp->base.revision >= 2) {
if (rsdp->xsdt_ptr != (u64) nullptr) {
m_xsdt_supported = true;
} else {
m_xsdt_supported = false;
}
}
if (!m_xsdt_supported) {
m_main_system_description_table = PhysicalAddress(rsdp->base.rsdt_ptr);
} else {
m_main_system_description_table = PhysicalAddress(rsdp->xsdt_ptr);
}
}
StaticParser::StaticParser(PhysicalAddress rsdp)
: m_rsdp(rsdp)
{
klog() << "ACPI: Using RSDP @ " << rsdp;
locate_static_data();
}
static PhysicalAddress find_rsdp_in_ebda(u16 ebda_segment)
{
auto rsdp_region = MM.allocate_kernel_region(PhysicalAddress(page_base_of((u32)(ebda_segment << 4))), PAGE_ROUND_UP(1024), "ACPI Static Parser RSDP Finding #1", Region::Access::Read, false, true);
char* p_rsdp_str = (char*)(PhysicalAddress(ebda_segment << 4).as_ptr());
for (char* rsdp_str = (char*)rsdp_region->vaddr().offset(offset_in_page((u32)(ebda_segment << 4))).as_ptr(); rsdp_str < (char*)(rsdp_region->vaddr().offset(offset_in_page((u32)(ebda_segment << 4))).get() + 1024); rsdp_str += 16) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Looking for RSDP in EBDA @ V " << (void*)rsdp_str << ", P " << (void*)p_rsdp_str;
#endif
if (!strncmp("RSD PTR ", rsdp_str, strlen("RSD PTR ")))
return PhysicalAddress((FlatPtr)p_rsdp_str);
p_rsdp_str += 16;
}
return {};
}
static PhysicalAddress find_rsdp_in_bios_area()
{
auto rsdp_region = MM.allocate_kernel_region(PhysicalAddress(0xE0000), PAGE_ROUND_UP(0xFFFFF - 0xE0000), "ACPI Static Parser RSDP Finding #2", Region::Access::Read, false, true);
char* p_rsdp_str = (char*)(PhysicalAddress(0xE0000).as_ptr());
for (char* rsdp_str = (char*)rsdp_region->vaddr().offset(offset_in_page((u32)(0xE0000))).as_ptr(); rsdp_str < (char*)(rsdp_region->vaddr().offset(offset_in_page((u32)(0xE0000))).get() + (0xFFFFF - 0xE0000)); rsdp_str += 16) {
#ifdef ACPI_DEBUG
dbg() << "ACPI: Looking for RSDP in BIOS ROM area @ V " << (void*)rsdp_str << ", P " << (void*)p_rsdp_str;
#endif
if (!strncmp("RSD PTR ", rsdp_str, strlen("RSD PTR ")))
return PhysicalAddress((FlatPtr)p_rsdp_str);
p_rsdp_str += 16;
}
return {};
}
static bool validate_table(const Structures::SDTHeader& v_header, size_t length)
{
u8 checksum = 0;
auto* sdt = (const u8*)&v_header;
for (size_t i = 0; i < length; i++)
checksum += sdt[i];
if (checksum == 0)
return true;
return false;
}
PhysicalAddress StaticParsing::find_rsdp()
{
auto ebda_seg_ptr = map_typed<u16>(PhysicalAddress(0x40e));
klog() << "ACPI: Probing EBDA, Segment 0x" << String::format("%x", *ebda_seg_ptr);
auto rsdp = find_rsdp_in_ebda(*ebda_seg_ptr);
if (!rsdp.is_null())
return rsdp;
return find_rsdp_in_bios_area();
}
PhysicalAddress StaticParsing::find_table(PhysicalAddress rsdp_address, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto rsdp = map_typed<Structures::RSDPDescriptor20>(rsdp_address);
if (rsdp->base.revision == 0)
return search_table_in_rsdt(PhysicalAddress(rsdp->base.rsdt_ptr), signature);
if (rsdp->base.revision >= 2) {
if (rsdp->xsdt_ptr)
return search_table_in_xsdt(PhysicalAddress(rsdp->xsdt_ptr), signature);
return search_table_in_rsdt(PhysicalAddress(rsdp->base.rsdt_ptr), signature);
}
ASSERT_NOT_REACHED();
}
static PhysicalAddress search_table_in_xsdt(PhysicalAddress xsdt_address, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto xsdt = map_typed<Structures::XSDT>(xsdt_address);
for (size_t i = 0; i < ((xsdt->h.length - sizeof(Structures::SDTHeader)) / sizeof(u64)); ++i) {
if (match_table_signature(PhysicalAddress((FlatPtr)xsdt->table_ptrs[i]), signature))
return PhysicalAddress((FlatPtr)xsdt->table_ptrs[i]);
}
return {};
}
static bool match_table_signature(PhysicalAddress table_header, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto table = map_typed<Structures::RSDT>(table_header);
return !strncmp(table->h.sig, signature.characters_without_null_termination(), 4);
}
static PhysicalAddress search_table_in_rsdt(PhysicalAddress rsdt_address, const StringView& signature)
{
// FIXME: There's no validation of ACPI tables here. Use the checksum to validate the tables.
// FIXME: Don't blindly use PAGE_SIZE here, but probe the actual length.
ASSERT(signature.length() == 4);
auto rsdt = map_typed<Structures::RSDT>(rsdt_address);
for (u32 i = 0; i < ((rsdt->h.length - sizeof(Structures::SDTHeader)) / sizeof(u32)); i++) {
if (match_table_signature(PhysicalAddress((FlatPtr)rsdt->table_ptrs[i]), signature))
return PhysicalAddress((FlatPtr)rsdt->table_ptrs[i]);
}
return {};
}
}
}

75
Kernel/ACPI/ACPIStaticParser.h
View File

@ -1,75 +0,0 @@
/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/OwnPtr.h>
#include <Kernel/ACPI/ACPIParser.h>
namespace Kernel {
namespace ACPI {
class StaticParser : public Parser {
friend class Parser;
public:
virtual PhysicalAddress find_table(const StringView& signature) override;
virtual void try_acpi_reboot() override;
virtual bool can_reboot() override;
virtual bool can_shutdown() override { return false; }
virtual void try_acpi_shutdown() override;
virtual const FADTFlags::HardwareFeatures& hardware_features() const override;
virtual const FADTFlags::x86_Specific_Flags& x86_specific_flags() const override;
protected:
explicit StaticParser(PhysicalAddress rsdp);
private:
void locate_static_data();
void locate_main_system_description_table();
void initialize_main_system_description_table();
size_t get_table_size(PhysicalAddress);
u8 get_table_revision(PhysicalAddress);
void init_fadt();
void init_facs();
bool validate_reset_register();
void access_generic_address(const Structures::GenericAddressStructure&, u32 value);
PhysicalAddress m_rsdp;
PhysicalAddress m_main_system_description_table;
Vector<PhysicalAddress> m_sdt_pointers;
PhysicalAddress m_fadt;
PhysicalAddress m_facs;
bool m_xsdt_supported;
FADTFlags::HardwareFeatures m_hardware_flags;
FADTFlags::x86_Specific_Flags m_x86_specific_flags;
};
}
}

2
Kernel/ACPI/Initialize.cpp
View File

@ -60,7 +60,7 @@ void initialize()
if (feature_level == FeatureLevel::Enabled)
Parser::initialize<DynamicParser>(rsdp);
else
Parser::initialize<StaticParser>(rsdp);
Parser::initialize<Parser>(rsdp);
}
bool is_enabled()

1
Kernel/Makefile
View File

@ -122,7 +122,6 @@ OBJS = \
VM/SharedInodeVMObject.o \
VM/VMObject.o \
ACPI/ACPIParser.o \
ACPI/ACPIStaticParser.o \
ACPI/ACPIDynamicParser.o \
ACPI/DMIDecoder.o \
ACPI/Initialize.o \

1
Kernel/init.cpp
View File

@ -26,7 +26,6 @@
#include <AK/Types.h>
#include <Kernel/ACPI/ACPIDynamicParser.h>
#include <Kernel/ACPI/ACPIStaticParser.h>
#include <Kernel/ACPI/DMIDecoder.h>
#include <Kernel/ACPI/Initialize.h>
#include <Kernel/ACPI/MultiProcessorParser.h>