Configuration Symbol Reference¶

Introduction¶

Kconfig files describe the configuration symbols supported in the build system, the logical organization and structure that group the symbols in menus and sub-menus, and the relationships between the different configuration symbols that govern the valid configuration combinations.

The Kconfig files are distributed across the build directory tree. The files are organized based on their common characteristics and on what new symbols they add to the configuration menus.

The configuration options’ information below is extracted directly from Kconfig. Click on the option name in the table below for detailed information about each option.

Supported Options¶

Table 7 Alphabetized Index of Configuration Options¶
Kconfig Symbol	Description
`CONFIG_BOARD`	Target board
`CONFIG_COM_BASE`	Base address of the vuart port
`CONFIG_COM_IRQ`	IRQ of the vuart port
`CONFIG_CONSOLE_LOGLEVEL_DEFAULT`	Default loglevel on the serial console
`CONFIG_CONSTANT_ACPI`	The platform ACPI info is constant
`CONFIG_CPU_UP_TIMEOUT`	Timeout in ms when bringing up secondary CPUs
`CONFIG_DEFCONFIG_LIST`
`CONFIG_DMAR_PARSE_ENABLED`	Enable ACPI DMA Remapping tables parsing
`CONFIG_EFI_STUB`	Enable EFI stub
`CONFIG_ENFORCE_VALIDATED_ACPI_INFO`	Enforce the use of validated ACPI info table
`CONFIG_GPU_SBDF`	Segment, Bus, Device, and function of the GPU
`CONFIG_HEAP_SIZE`	Capacity of the heap for malloc()
`CONFIG_HV_RAM_SIZE`	Size of the RAM region used by the hypervisor
`CONFIG_HV_RAM_START`	2M-aligned Start physical address of the RAM region used by the hypervisor
`CONFIG_IOMMU_BUS_NUM`	Highest PCI bus ID used during IOMMU initialization
`CONFIG_L1D_FLUSH_VMENTRY_ENABLED`	Enable L1 cache flush before VM entry
`CONFIG_LOG_BUF_SIZE`	Capacity of logbuf for each physical cpu
`CONFIG_LOG_DESTINATION`	Bitmap of consoles where logs are printed
`CONFIG_LOW_RAM_SIZE`	Size of the low RAM region
`CONFIG_MALLOC_ALIGN`	Block size in the heap for malloc()
`CONFIG_MAX_EMULATED_MMIO_REGIONS`	Maximum number of emulated MMIO regions
`CONFIG_MAX_IOAPIC_NUM`	Maximum number of IO-APICs
`CONFIG_MAX_IOMMU_NUM`	Maximum number of IOMMU devices
`CONFIG_MAX_IR_ENTRIES`	Maximum number of Interrupt Remapping Entries
`CONFIG_MAX_MSIX_TABLE_NUM`	Maximum number of MSI-X tables per device
`CONFIG_MAX_PCI_DEV_NUM`	Maximum number of PCI devices
`CONFIG_MAX_PCPU_NUM`	Maximum number of PCPU
`CONFIG_MAX_PT_IRQ_ENTRIES`	Maximum number of interrupt source for PT devices
`CONFIG_MAX_VCPUS_PER_VM`	Maximum number of VCPUs per VM
`CONFIG_MAX_VM_NUM`	Maximum number of VM
`CONFIG_MEM_LOGLEVEL_DEFAULT`	Default loglevel in memory
`CONFIG_MTRR_ENABLED`	Memory Type Range Registers (MTRR) enabled
`CONFIG_NPK_LOGLEVEL_DEFAULT`	Default loglevel for the hypervisor NPK log
`CONFIG_PARTITION_MODE`	Partition mode
`CONFIG_PLATFORM_RAM_SIZE`	Size of the physical platform RAM
`CONFIG_PLATFORM_SBL`	SBL
`CONFIG_PLATFORM_UEFI`	UEFI
`CONFIG_RELEASE`	Release build
`CONFIG_RELOC`	Enable hypervisor relocation
`CONFIG_SERIAL_LEGACY`	Legacy
`CONFIG_SERIAL_PCI`	PCI
`CONFIG_SERIAL_PCI_BDF`	BDF of serial PCI device
`CONFIG_SERIAL_PIO_BASE`	Base address of serial PIO region
`CONFIG_SHARING_MODE`	Sharing mode
`CONFIG_SOS_RAM_SIZE`	Size of the Service OS (SOS) RAM
`CONFIG_STACK_SIZE`	Capacity of one stack, in bytes
`CONFIG_UEFI_OS_LOADER_NAME`	UEFI OS loader name
`CONFIG_UOS_RAM_SIZE`	Size of the User OS (UOS) RAM