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ladybird/Kernel/CommandLine.h

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 08:38:21 +00:00
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
Everything: Move to SPDX license identifiers in all files. SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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* SPDX-License-Identifier: BSD-2-Clause
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 08:38:21 +00:00
*/
Kernel: Add KParams class for accessing kernel cmdline parameters (#188)
2019-06-04 10:54:27 +00:00
#pragma once
#include <AK/HashMap.h>
Kernel: Simplify VMWareBackdoor somewhat - If there is no VMWare backdoor, don't allocate memory for it. - Remove the "unsupported" state, instead just don't instantiate. - Move the command-line parsing from init to the driver. - Move mouse packet reception from PS2MouseDevice to VMWareBackdoor.
2020-04-08 14:35:00 +00:00
#include <AK/Optional.h>
Kernel: Run clang-format on files Let's rip off the band-aid
2020-03-22 00:12:45 +00:00
#include <AK/String.h>
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
#include <AK/Vector.h>
Kernel: Add KParams class for accessing kernel cmdline parameters (#188)
2019-06-04 10:54:27 +00:00
Kernel: Rename KParams => Kernel::CommandLine Let's make this read more like English.
2020-04-08 11:54:44 +00:00
namespace Kernel {
Kernel: Add KParams class for accessing kernel cmdline parameters (#188)
2019-06-04 10:54:27 +00:00
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
enum class BootMode {
Kernel/Graphics + SystemServer: Support text mode properly As we removed the support of VBE modesetting that was done by GRUB early on boot, we need to determine if we can modeset the resolution with our drivers, and if not, we should enable text mode and ensure that SystemServer knows about it too. Also, SystemServer should first check if there's a framebuffer device node, which is an indication that text mode was not even if it was requested. Then, if it doesn't find it, it should check what boot_mode argument the user specified (in case it's self-test). This way if we try to use bochs-display device (which is not VGA compatible) and request a text mode, it will not honor the request and will continue with graphical mode. Also try to print critical messages with mininum memory allocations possible. In LibVT, We make the implementation flexible for kernel-specific methods that are implemented in ConsoleImpl class.
2021-04-16 19:58:51 +00:00
NoFramebufferDevices,
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
SelfTest,
Graphical
};
enum class HPETMode {
Periodic,
NonPeriodic
};
enum class AcpiFeatureLevel {
Enabled,
Limited,
Disabled,
};
Kernel/PCI: Introduce a new ECAM access mechanism Now the kernel supports 2 ECAM access methods. MMIOAccess was renamed to WindowedMMIOAccess and is what we had until now - each device that is detected on boot is assigned to a memory-mapped window, so IO operations on multiple devices can occur simultaneously due to creating multiple virtual mappings, hence the name is a memory-mapped window. This commit adds a new class called MMIOAccess (not to be confused with the old MMIOAccess class). This class creates one memory-mapped window. On each IO operation on a configuration space of a device, it maps the requested PCI bus region to that window. Therefore it holds a SpinLock during the operation to ensure that no other PCI bus region was mapped during the call. A user can choose to either use PCI ECAM with memory-mapped window for each device, or for an entire bus. By default, the kernel prefers to map the entire PCI bus region.
2021-04-03 13:46:04 +00:00
enum class PCIAccessLevel {
IOAddressing,
MappingPerBus,
MappingPerDevice,
};
Kernel: Don't reset AHCI ports during boot unless requested Instead of blindly resetting every AHCI port, let's just reset only the controller by default. The user can still request to reset everything with a new kernel boot argument called ahci_reset_mode which is set by default to "controller", so the code will only invoke an HBA reset. This kernel boot argument can be set to 3 different values: 1. "controller" - reset the HBA and skip resetting AHCI ports 2. "none" - don't reset anything, so we rely on the firmware to initialize the AHCI HBA and ports for us. 3. "complete" - reset the AHCI HBA and ports.
2021-03-12 16:35:16 +00:00
enum class AHCIResetMode {
ControllerOnly,
Kernel/Storage: Remove the None option from AHCI reset policy This was proved to be a problematic option. I tested this option on bare metal AHCI controller, and if we didn't reset the controller, the firmware (SeaBIOS) could leave the controller state not clean, so an plugged device signature was in place although the specific port had no plugged device after rebooting. Therefore, we need to ensure we use the controller in a clean state always. In addition to that, the Complete option was renamed to Aggressive, as it represents better the consequences of choosing this option.
2021-05-28 22:18:45 +00:00
Aggressive,
Kernel: Don't reset AHCI ports during boot unless requested Instead of blindly resetting every AHCI port, let's just reset only the controller by default. The user can still request to reset everything with a new kernel boot argument called ahci_reset_mode which is set by default to "controller", so the code will only invoke an HBA reset. This kernel boot argument can be set to 3 different values: 1. "controller" - reset the HBA and skip resetting AHCI ports 2. "none" - don't reset anything, so we rely on the firmware to initialize the AHCI HBA and ports for us. 3. "complete" - reset the AHCI HBA and ports.
2021-03-12 16:35:16 +00:00
};
Kernel: Rename KParams => Kernel::CommandLine Let's make this read more like English.
2020-04-08 11:54:44 +00:00
class CommandLine {
AK_MAKE_ETERNAL;
Kernel: Simplify VMWareBackdoor somewhat - If there is no VMWare backdoor, don't allocate memory for it. - Remove the "unsupported" state, instead just don't instantiate. - Move the command-line parsing from init to the driver. - Move mouse packet reception from PS2MouseDevice to VMWareBackdoor.
2020-04-08 14:35:00 +00:00
Kernel: Rename KParams => Kernel::CommandLine Let's make this read more like English.
2020-04-08 11:54:44 +00:00
public:
Kernel: Copy command line to a safe place This avoids kmalloc overwriting it because it may be within the kmalloc or eternal pool.
2020-08-25 01:35:27 +00:00
static void early_initialize(const char* cmd_line);
static void initialize();
Kernel: Add KParams class for accessing kernel cmdline parameters (#188)
2019-06-04 10:54:27 +00:00
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
[[nodiscard]] const String& string() const { return m_string; }
Kernel: Move CommandLine API to use AK::StringView instead of AK::String The current CommandLine API unfortunately allocates Strings just to query the presence of arguments on the command line. Switch the API to use StringView instead to reduce the number of String allocations.
2021-05-31 08:59:02 +00:00
Optional<String> lookup(const StringView& key) const;
[[nodiscard]] bool contains(const StringView& key) const;
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
Kernel: Add 'boot_prof' option to enable full system profiling on boot The full system profiling functionality is useful for profiling the boot performance of the system. Add a new kernel boot option to start the system with profiling enabled. This lets you disable and view a profile once the system is booted. You can use it by running: ``` $ run.sh qcmd boot_prof ```
2021-03-03 09:00:41 +00:00
[[nodiscard]] bool is_boot_profiling_enabled() const;
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
[[nodiscard]] bool is_ide_enabled() const;
[[nodiscard]] bool is_smp_enabled() const;
[[nodiscard]] bool is_vmmouse_enabled() const;
Kernel/PCI: Introduce a new ECAM access mechanism Now the kernel supports 2 ECAM access methods. MMIOAccess was renamed to WindowedMMIOAccess and is what we had until now - each device that is detected on boot is assigned to a memory-mapped window, so IO operations on multiple devices can occur simultaneously due to creating multiple virtual mappings, hence the name is a memory-mapped window. This commit adds a new class called MMIOAccess (not to be confused with the old MMIOAccess class). This class creates one memory-mapped window. On each IO operation on a configuration space of a device, it maps the requested PCI bus region to that window. Therefore it holds a SpinLock during the operation to ensure that no other PCI bus region was mapped during the call. A user can choose to either use PCI ECAM with memory-mapped window for each device, or for an entire bus. By default, the kernel prefers to map the entire PCI bus region.
2021-04-03 13:46:04 +00:00
[[nodiscard]] PCIAccessLevel pci_access_level() const;
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
[[nodiscard]] bool is_legacy_time_enabled() const;
Kernel/Graphics + SystemServer: Support text mode properly As we removed the support of VBE modesetting that was done by GRUB early on boot, we need to determine if we can modeset the resolution with our drivers, and if not, we should enable text mode and ensure that SystemServer knows about it too. Also, SystemServer should first check if there's a framebuffer device node, which is an indication that text mode was not even if it was requested. Then, if it doesn't find it, it should check what boot_mode argument the user specified (in case it's self-test). This way if we try to use bochs-display device (which is not VGA compatible) and request a text mode, it will not honor the request and will continue with graphical mode. Also try to print critical messages with mininum memory allocations possible. In LibVT, We make the implementation flexible for kernel-specific methods that are implemented in ConsoleImpl class.
2021-04-16 19:58:51 +00:00
[[nodiscard]] bool is_no_framebuffer_devices_mode() const;
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
[[nodiscard]] bool is_force_pio() const;
[[nodiscard]] AcpiFeatureLevel acpi_feature_level() const;
[[nodiscard]] BootMode boot_mode() const;
[[nodiscard]] HPETMode hpet_mode() const;
Kernel: Introduce two new boot arguments to assist with bare metal debug The first one is for disabling the PS2 controller, the other one is for disabling physical storage enumeration. We can't be sure any machine will work with our implementation, therefore this will help us to test more machines.
2021-04-08 18:18:48 +00:00
[[nodiscard]] bool disable_physical_storage() const;
[[nodiscard]] bool disable_ps2_controller() const;
Kernel: Add boot argument to disable the UHCI Controller Helps with bare metal debugging, as we can't be sure our implementation will work with a given machine. As reported by someone on Discord, their machine hangs when we attempt the dummy transfer.
2021-04-17 19:36:53 +00:00
[[nodiscard]] bool disable_uhci_controller() const;
Kernel: Add kernel command line flag to disable VirtIO support This command line flag can be used to disable VirtIO support on certain configurations (native windows) where interfacing with virtio devices can cause qemu to freeze.
2021-04-18 13:06:35 +00:00
[[nodiscard]] bool disable_virtio() const;
Kernel: Don't reset AHCI ports during boot unless requested Instead of blindly resetting every AHCI port, let's just reset only the controller by default. The user can still request to reset everything with a new kernel boot argument called ahci_reset_mode which is set by default to "controller", so the code will only invoke an HBA reset. This kernel boot argument can be set to 3 different values: 1. "controller" - reset the HBA and skip resetting AHCI ports 2. "none" - don't reset anything, so we rely on the firmware to initialize the AHCI HBA and ports for us. 3. "complete" - reset the AHCI HBA and ports.
2021-03-12 16:35:16 +00:00
[[nodiscard]] AHCIResetMode ahci_reset_mode() const;
Kernel: Move Kernel CommandLine parsing to strongly typed API. Previously all of the CommandLine parsing was spread out around the Kernel. Instead move it all into the Kernel CommandLine class, and expose a strongly typed API for querying the state of options.
2021-03-03 08:51:55 +00:00
[[nodiscard]] String userspace_init() const;
[[nodiscard]] Vector<String> userspace_init_args() const;
[[nodiscard]] String root_device() const;
Kernel: Allow the user to specify the virtual console when booting
2021-05-13 21:22:02 +00:00
[[nodiscard]] size_t switch_to_tty() const;
Kernel: Run clang-format on everything.
2019-06-07 09:43:58 +00:00
Kernel: Add KParams class for accessing kernel cmdline parameters (#188)
2019-06-04 10:54:27 +00:00
private:
Kernel: Rename KParams => Kernel::CommandLine Let's make this read more like English.
2020-04-08 11:54:44 +00:00
CommandLine(const String&);
Kernel: Move CommandLine API to use AK::StringView instead of AK::String The current CommandLine API unfortunately allocates Strings just to query the presence of arguments on the command line. Switch the API to use StringView instead to reduce the number of String allocations.
2021-05-31 08:59:02 +00:00
void add_arguments(const Vector<StringView>& args);
Kernel/Commandline: Allow the user to specify an embedded string This is by default left empty, so people won't run the kernel in a mode which they didn't want to. The embedded string will override the supplied commandline from the bootloader, which is good for debugging sessions. This change seemed important for me, because I debug the kernel on bare metal with iPXE, and every change to the commandline meant that I needed rewrite a new iPXE USB image with a modified iPXE script.
2021-05-21 17:42:33 +00:00
void build_commandline(const String& cmdline_from_bootloader);
Kernel: Rename KParams => Kernel::CommandLine Let's make this read more like English.
2020-04-08 11:54:44 +00:00
String m_string;
Kernel: Move CommandLine API to use AK::StringView instead of AK::String The current CommandLine API unfortunately allocates Strings just to query the presence of arguments on the command line. Switch the API to use StringView instead to reduce the number of String allocations.
2021-05-31 08:59:02 +00:00
HashMap<StringView, StringView> m_params;
Kernel: Add KParams class for accessing kernel cmdline parameters (#188)
2019-06-04 10:54:27 +00:00
};
Kernel: Rename KParams => Kernel::CommandLine Let's make this read more like English.
2020-04-08 11:54:44 +00:00
const CommandLine& kernel_command_line();
}
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