mirror of
https://github.com/RGBCube/serenity
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4d755725bf
The kernel doesn't like the IDE controllers on an Asus A7N8X-E Deluxe motherboard, so add an option to disable them.
221 lines
8 KiB
C++
221 lines
8 KiB
C++
/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/UUID.h>
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#include <Kernel/CommandLine.h>
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#include <Kernel/Devices/BlockDevice.h>
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#include <Kernel/FileSystem/Ext2FileSystem.h>
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#include <Kernel/PCI/Access.h>
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#include <Kernel/Storage/IDEController.h>
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#include <Kernel/Storage/Partition/EBRPartitionTable.h>
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#include <Kernel/Storage/Partition/GUIDPartitionTable.h>
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#include <Kernel/Storage/Partition/MBRPartitionTable.h>
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#include <Kernel/Storage/RamdiskController.h>
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#include <Kernel/Storage/StorageManagement.h>
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namespace Kernel {
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static StorageManagement* s_the;
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StorageManagement::StorageManagement(String boot_argument, bool force_pio)
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: m_boot_argument(boot_argument)
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, m_controllers(enumerate_controllers(force_pio))
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, m_storage_devices(enumerate_storage_devices())
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, m_disk_partitions(enumerate_disk_partitions())
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{
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if (!boot_argument_contains_partition_uuid()) {
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determine_boot_device();
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return;
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}
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determine_boot_device_with_partition_uuid();
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}
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bool StorageManagement::boot_argument_contains_partition_uuid()
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{
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return m_boot_argument.starts_with("PARTUUID=");
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}
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NonnullRefPtrVector<StorageController> StorageManagement::enumerate_controllers(bool force_pio) const
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{
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NonnullRefPtrVector<StorageController> controllers;
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if (!kernel_command_line().contains("disable_ide")) {
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PCI::enumerate([&](const PCI::Address& address, PCI::ID) {
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if (PCI::get_class(address) == 0x1 && PCI::get_subclass(address) == 0x1) {
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controllers.append(IDEController::initialize(address, force_pio));
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}
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});
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}
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controllers.append(RamdiskController::initialize());
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return controllers;
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}
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NonnullRefPtrVector<StorageDevice> StorageManagement::enumerate_storage_devices() const
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{
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ASSERT(!m_controllers.is_empty());
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NonnullRefPtrVector<StorageDevice> devices;
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for (auto& controller : m_controllers) {
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for (size_t device_index = 0; device_index < controller.devices_count(); device_index++) {
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auto device = controller.device(device_index);
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if (device.is_null())
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continue;
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devices.append(device.release_nonnull());
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}
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}
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return devices;
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}
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OwnPtr<PartitionTable> StorageManagement::try_to_initialize_partition_table(const StorageDevice& device) const
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{
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auto mbr_table_or_result = MBRPartitionTable::try_to_initialize(device);
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if (!mbr_table_or_result.is_error())
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return move(mbr_table_or_result.value());
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if (mbr_table_or_result.error() == PartitionTable::Error::MBRProtective) {
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auto gpt_table_or_result = GUIDPartitionTable::try_to_initialize(device);
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if (gpt_table_or_result.is_error())
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return {};
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return move(gpt_table_or_result.value());
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}
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if (mbr_table_or_result.error() == PartitionTable::Error::ConatinsEBR) {
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auto ebr_table_or_result = EBRPartitionTable::try_to_initialize(device);
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if (ebr_table_or_result.is_error())
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return {};
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return move(ebr_table_or_result.value());
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}
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return {};
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}
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NonnullRefPtrVector<DiskPartition> StorageManagement::enumerate_disk_partitions() const
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{
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ASSERT(!m_storage_devices.is_empty());
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NonnullRefPtrVector<DiskPartition> partitions;
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size_t device_index = 0;
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for (auto& device : m_storage_devices) {
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auto partition_table = try_to_initialize_partition_table(device);
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if (!partition_table)
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continue;
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for (size_t partition_index = 0; partition_index < partition_table->partitions_count(); partition_index++) {
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auto partition_metadata = partition_table->partition(partition_index);
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if (!partition_metadata.has_value())
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continue;
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// FIXME: Try to not hardcode a maximum of 16 partitions per drive!
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auto disk_partition = DiskPartition::create(const_cast<StorageDevice&>(device), (partition_index + (16 * device_index)), partition_metadata.value());
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partitions.append(disk_partition);
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const_cast<StorageDevice&>(device).m_partitions.append(disk_partition);
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}
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device_index++;
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}
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return partitions;
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}
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void StorageManagement::determine_boot_device()
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{
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ASSERT(!m_controllers.is_empty());
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if (m_boot_argument.starts_with("/dev/")) {
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StringView device_name = m_boot_argument.substring_view(5);
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Device::for_each([&](Device& device) {
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if (device.is_block_device()) {
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auto& block_device = static_cast<BlockDevice&>(device);
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if (device.device_name() == device_name) {
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m_boot_block_device = block_device;
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}
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}
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});
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}
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if (m_boot_block_device.is_null()) {
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klog() << "init_stage2: boot device " << m_boot_argument << " not found";
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Processor::halt();
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}
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}
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void StorageManagement::determine_boot_device_with_partition_uuid()
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{
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ASSERT(!m_disk_partitions.is_empty());
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ASSERT(m_boot_argument.starts_with("PARTUUID="));
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auto partition_uuid = UUID(m_boot_argument.substring_view(strlen("PARTUUID=")));
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if (partition_uuid.to_string().length() != 36) {
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klog() << "init_stage2: specified partition UUID is not valid";
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Processor::halt();
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}
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for (auto& partition : m_disk_partitions) {
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if (partition.metadata().unique_guid().is_zero())
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continue;
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if (partition.metadata().unique_guid() == partition_uuid) {
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m_boot_block_device = partition;
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break;
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}
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}
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}
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RefPtr<BlockDevice> StorageManagement::boot_block_device() const
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{
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return m_boot_block_device;
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}
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NonnullRefPtr<FS> StorageManagement::root_filesystem() const
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{
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auto boot_device_description = boot_block_device();
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if (!boot_device_description) {
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klog() << "init_stage2: couldn't find a suitable device to boot from";
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Processor::halt();
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}
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auto e2fs = Ext2FS::create(FileDescription::create(boot_device_description.release_nonnull()).value());
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if (!e2fs->initialize()) {
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klog() << "init_stage2: couldn't open root filesystem";
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Processor::halt();
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}
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return e2fs;
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}
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bool StorageManagement::initialized()
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{
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return (s_the != nullptr);
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}
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void StorageManagement::initialize(String root_device, bool force_pio)
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{
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ASSERT(!StorageManagement::initialized());
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s_the = new StorageManagement(root_device, force_pio);
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}
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StorageManagement& StorageManagement::the()
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{
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return *s_the;
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}
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NonnullRefPtrVector<StorageController> StorageManagement::ide_controllers() const
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{
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NonnullRefPtrVector<StorageController> ide_controllers;
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for (auto& controller : m_controllers) {
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if (controller.type() == StorageController::Type::IDE)
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ide_controllers.append(controller);
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}
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return ide_controllers;
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}
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}
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