Coreboot Options
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Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!
This is an automatically generated list of coreboot compile-time options.
Last update: 2009/06/03 01:34:03.
| Option | Comment | Default | Export | Format |
|---|---|---|---|---|
|
ARCH |
"Default architecture is i386, options are alpha and ppc" |
"i386" |
always |
|
|
HAVE_MOVNTI |
"This cpu supports the MOVNTI directive" |
0 |
always |
|
|
CROSS_COMPILE |
"Cross compiler prefix" |
"" |
always |
|
|
CC |
"Target C Compiler" |
"$(CROSS_COMPILE)gcc" |
always |
|
|
HOSTCC |
"Host C Compiler" |
"gcc" |
always |
|
|
CPU_OPT |
"Additional per-cpu CFLAGS" |
none |
used |
|
|
OBJCOPY |
"Objcopy command" |
"$(CROSS_COMPILE)objcopy --gap-fill 0xff" |
always |
|
|
COREBOOT_VERSION |
"coreboot version" |
"2.0.0-r$(shell if [ -d $(TOP)/.svn -a -f `which svnversion` ]; then svnversion $(TOP); else if [ -d $(TOP)/.git -a -f `which git` ]; then git --git-dir=/$(TOP)/.git log|grep git-svn-id|cut -f 2 -d@|cut -f 1 -d' '|sort -g|tail -1; fi; fi)" |
always |
"\"%s\"" |
|
COREBOOT_EXTRA_VERSION |
"\"%s\"" | |||
|
COREBOOT_BUILD |
"Build date" |
"$(shell date)" |
always |
"\"%s\"" |
|
COREBOOT_COMPILE_TIME |
"Build time" |
"$(shell date +%T)" |
always |
"\"%s\"" |
|
COREBOOT_COMPILE_BY |
"Who build this image" |
"$(shell whoami)" |
always |
"\"%s\"" |
|
COREBOOT_COMPILE_HOST |
"Build host" |
"$(shell hostname)" |
always |
"\"%s\"" |
|
COREBOOT_COMPILE_DOMAIN |
"Build domain name" |
"$(shell dnsdomainname)" |
always |
"\"%s\"" |
|
COREBOOT_COMPILER |
"Build compiler" |
"$(shell $(CC) $(CFLAGS) -v 2>&1 | tail -1)" |
always |
"\"%s\"" |
|
COREBOOT_LINKER |
"Build linker" |
"$(shell $(CC) -Wl,--version 2>&1 | grep \" ld\")" |
always |
"\"%s\"" |
|
COREBOOT_ASSEMBLER |
"Build assembler" |
"$(shell touch dummy.s ; $(CC) -c -Wa,-v dummy.s 2>&1; rm -f dummy.s dummy.o )" |
always |
"\"%s\"" |
|
CONFIG_CHIP_CONFIGURE |
"Use new chip_configure method for configuring (non-pci) devices" |
0 |
used |
|
|
CONFIG_USE_INIT |
"Use stage 1 initialization code" |
0 |
always |
|
|
COREBOOT_V2 |
"This is used by code to determine v2 vs v3" |
1 |
always |
|
|
HAVE_FALLBACK_BOOT |
"Set if fallback booting required" |
0 |
always |
"%d" |
|
HAVE_FAILOVER_BOOT |
"Set if failover booting required" |
0 |
always |
"%d" |
|
USE_FALLBACK_IMAGE |
"Set to build a fallback image" |
0 |
used |
"%d" |
|
USE_FAILOVER_IMAGE |
||||
|
FALLBACK_SIZE |
"Default fallback image size" |
65536 |
used |
"0x%x" |
|
FAILOVER_SIZE |
||||
|
ROM_SIZE |
"Size of your ROM" |
none |
used |
"0x%x" |
|
ROM_IMAGE_SIZE |
"Default image size" |
65535 |
always |
"0x%x" |
|
ROM_SECTION_SIZE |
"Default rom section size" |
{FALLBACK_SIZE} |
used |
"0x%x" |
|
ROM_SECTION_OFFSET |
"Default rom section offset" |
{ROM_SIZE - FALLBACK_SIZE} |
used |
"0x%x" |
|
PAYLOAD_SIZE |
"Default payload size" |
{ROM_SECTION_SIZE - ROM_IMAGE_SIZE} |
always |
"0x%x" |
|
_ROMBASE |
"Base address of coreboot in ROM" |
{PAYLOAD_SIZE} |
always |
"0x%x" |
|
_ROMSTART |
"Start address of coreboot in ROM" |
none |
used |
"0x%x" |
|
_RESET |
"Hardware reset vector address" |
{_ROMBASE} |
always |
"0x%x" |
|
_EXCEPTION_VECTORS |
"Address of exception vector table" |
{_ROMBASE+0x100} |
always |
"0x%x" |
|
STACK_SIZE |
"Default stack size" |
0x2000 |
always |
"0x%x" |
|
HEAP_SIZE |
"Default heap size" |
0x2000 |
always |
"0x%x" |
|
_RAMBASE |
"Base address of coreboot in RAM" |
none |
always |
"0x%x" |
|
_RAMSTART |
"Start address of coreboot in RAM" |
none |
used |
"0x%x" |
|
USE_DCACHE_RAM |
"Use data cache as temporary RAM if possible" |
0 |
always |
|
|
CAR_FAM10 |
"AMD family 10 CAR requires additional setup" |
0 |
always |
|
|
DCACHE_RAM_BASE |
"Base address of data cache when using it for temporary RAM" |
0xc0000 |
always |
"0x%x" |
|
DCACHE_RAM_SIZE |
"Size of data cache when using it for temporary RAM" |
0x1000 |
always |
"0x%x" |
|
DCACHE_RAM_GLOBAL_VAR_SIZE |
"Size of region that for global variable of cache as ram stage" |
0 |
always |
"0x%x" |
|
CONFIG_AP_CODE_IN_CAR |
||||
|
MEM_TRAIN_SEQ |
||||
|
WAIT_BEFORE_CPUS_INIT |
||||
|
XIP_ROM_BASE |
"Start address of area to cache during coreboot execution directly from ROM" |
0 |
used |
"0x%x" |
|
XIP_ROM_SIZE |
"Size of area to cache during coreboot execution directly from ROM" |
0 |
used |
"0x%x" |
|
CONFIG_COMPRESS |
"Set for compressed image" |
1 |
always |
|
|
CONFIG_UNCOMPRESSED |
"Set for uncompressed image" |
{!CONFIG_COMPRESS} |
always |
"%d" |
|
CONFIG_LB_MEM_TOPK |
"Kilobytes of memory to initialized before executing code from RAM" |
2048 |
always |
"%d" |
|
HAVE_OPTION_TABLE |
"Export CMOS option table" |
0 |
always |
|
|
USE_OPTION_TABLE |
"Use option table" |
{HAVE_OPTION_TABLE && !USE_FALLBACK_IMAGE} |
always |
"%d" |
|
LB_CKS_RANGE_START |
"First CMOS byte to use for coreboot options" |
49 |
always |
"%d" |
|
LB_CKS_RANGE_END |
"Last CMOS byte to use for coreboot options" |
125 |
always |
"%d" |
|
LB_CKS_LOC |
"Pair of bytes to use for CMOS checksum" |
126 |
always |
"%d" |
|
CRT0 |
"Main initialization target" |
"$(TOP)/src/arch/$(ARCH)/init/crt0.S.lb" |
always |
|
|
DEBUG |
"Enable x86emu debugging code" |
0 |
always |
|
|
CONFIG_CONSOLE_VGA |
"Log messages to any VGA-compatible device (may require *_ROM_RUN to bring up)" |
0 |
always |
|
|
CONFIG_CONSOLE_VGA_MULTI |
||||
|
CONFIG_CONSOLE_VGA_ONBOARD_AT_FIRST |
||||
|
CONFIG_CONSOLE_BTEXT |
||||
|
CONFIG_CONSOLE_LOGBUF |
"Log messages to buffer" |
0 |
always |
|
|
CONFIG_CONSOLE_SROM |
"Log messages to SROM console" |
0 |
always |
|
|
CONFIG_CONSOLE_SERIAL8250 |
"Log messages to 8250 uart based serial console" |
0 |
always |
|
|
CONFIG_USBDEBUG_DIRECT |
"Log messages to ehci debug port console" |
0 |
always |
|
|
DEFAULT_CONSOLE_LOGLEVEL |
"Console will log at this level unless changed" |
7 |
always |
|
|
MAXIMUM_CONSOLE_LOGLEVEL |
8 |
always |
||
|
CONFIG_SERIAL_POST |
"Enable SERIAL POST codes" |
0 |
always |
|
|
NO_POST |
"Disable POST codes" |
none |
used |
|
|
TTYS0_BASE |
"Base address for 8250 uart for the serial console" |
0x3f8 |
always |
"0x%x" |
|
TTYS0_BAUD |
"Default baud rate for serial console" |
115200 |
always |
|
|
TTYS0_DIV |
"Allow UART divisor to be set explicitly" |
none |
used |
"%d" |
|
TTYS0_LCS |
"Default flow control settings for the 8250 serial console uart" |
0x3 |
always |
"0x%x" |
|
CONFIG_USE_PRINTK_IN_CAR |
"use printk instead of print in CAR stage code" |
0 |
always |
|
|
ASSEMBLER_DEBUG |
"Create disassembly files for debugging" |
0 |
always |
|
|
MAINBOARD |
"Mainboard name" |
"Mainboard_not_set" |
always |
|
|
MAINBOARD_PART_NUMBER |
"Part number of mainboard" |
"Part_number_not_set" |
always |
"\"%s\"" |
|
MAINBOARD_VENDOR |
"Vendor of mainboard" |
"Vendor_not_set" |
always |
"\"%s\"" |
|
MAINBOARD_PCI_SUBSYSTEM_VENDOR_ID |
"PCI Vendor ID of mainboard manufacturer" |
0 |
always |
|
|
MAINBOARD_PCI_SUBSYSTEM_DEVICE_ID |
"PCI susbsystem device id assigned my mainboard manufacturer" |
0 |
always |
"0x%x" |
|
MAINBOARD_POWER_ON_AFTER_POWER_FAIL |
"Default power on after power fail setting" |
none |
used |
|
|
CONFIG_SYS_CLK_FREQ |
"System clock frequency in MHz" |
none |
used |
|
|
CONFIG_MAX_PCI_BUSES |
"Maximum number of PCI buses to search for devices" |
255 |
always |
|
|
CONFIG_SMP |
"Define if we support SMP" |
0 |
always |
|
|
CONFIG_MAX_CPUS |
||||
|
CONFIG_MAX_PHYSICAL_CPUS |
||||
|
CONFIG_LOGICAL_CPUS |
"Should multiple cpus per die be enabled?" |
0 |
always |
|
|
CONFIG_AP_IN_SIPI_WAIT |
"Should application processors go to SIPI wait state after initialization? (Required for Intel Core Duo)" |
0 |
always |
|
|
HAVE_MP_TABLE |
"Define to build an MP table" |
none |
used |
|
|
SERIAL_CPU_INIT |
||||
|
APIC_ID_OFFSET |
"We need to share this value between cache_as_ram_auto.c and northbridge.c" |
0 |
always |
|
|
ENABLE_APIC_EXT_ID |
"Enable APIC ext id mode 8 bit" |
0 |
always |
|
|
LIFT_BSP_APIC_ID |
"decide if we lift bsp apic id while ap apic id" |
0 |
always |
|
|
CONFIG_MULTIBOOT |
"Use Multiboot (rather than ELF boot notes) to boot the payload" |
1 |
always |
|
|
CONFIG_IDE_PAYLOAD |
"Boot from IDE device" |
0 |
always |
|
|
CONFIG_ROM_PAYLOAD |
"Boot image is located in ROM" |
0 |
always |
|
|
CONFIG_ROM_PAYLOAD_START |
"ROM stream start location" |
{0xffffffff - ROM_SIZE + ROM_SECTION_OFFSET + 1} |
always |
"0x%x" |
|
CONFIG_COMPRESSED_PAYLOAD_NRV2B |
"NRV2B compressed boot image is located in ROM" |
0 |
always |
|
|
CONFIG_COMPRESSED_PAYLOAD_LZMA |
"LZMA compressed boot image is located in ROM" |
0 |
always |
|
|
CONFIG_PRECOMPRESSED_PAYLOAD |
"boot image is already compressed" |
0 |
always |
|
|
CONFIG_SERIAL_PAYLOAD |
"Download boot image from serial port" |
0 |
always |
|
|
CONFIG_FS_PAYLOAD |
"Boot from a filesystem" |
0 |
always |
|
|
CONFIG_FS_EXT2 |
"Enable ext2 filesystem support" |
0 |
always |
|
|
CONFIG_FS_ISO9660 |
"Enable ISO9660 filesystem support" |
0 |
always |
|
|
CONFIG_FS_FAT |
"Enable FAT filesystem support" |
0 |
always |
|
|
CONFIG_CBFS |
"The new CBFS file system" |
0 |
always |
|
|
AUTOBOOT_DELAY |
"Delay (in seconds) before autobooting" |
2 |
always |
|
|
AUTOBOOT_CMDLINE |
"Default command line when autobooting" |
"hdc1:/vmlinuz root=/dev/hdc3 console=tty0 console=ttyS0,115200" |
always |
"\"%s\"" |
|
USE_WATCHDOG_ON_BOOT |
"Use the watchdog on booting" |
0 |
always |
|
|
CONFIG_HYPERTRANSPORT_PLUGIN_SUPPORT |
"Enable support for plugin Hypertransport busses" |
1 |
always |
|
|
CONFIG_AGP_PLUGIN_SUPPORT |
"Enable support for plugin AGP busses" |
1 |
always |
|
|
CONFIG_CARDBUS_PLUGIN_SUPPORT |
"Enable support cardbus plugin cards" |
1 |
always |
|
|
CONFIG_PCIX_PLUGIN_SUPPORT |
"Enable support for plugin PCI-X busses" |
1 |
always |
|
|
CONFIG_PCIEXP_PLUGIN_SUPPORT |
"Enable support for plugin PCI-E busses" |
1 |
always |
|
|
HAVE_PIRQ_TABLE |
"Define if we have a PIRQ table" |
none |
used |
|
|
PIRQ_ROUTE |
"Define if we have a PIRQ table and want routing IRQs" |
0 |
always |
|
|
IRQ_SLOT_COUNT |
"Number of IRQ slots" |
none |
used |
|
|
CONFIG_PCIBIOS_IRQ |
"PCIBIOS IRQ support" |
none |
used |
|
|
CONFIG_IOAPIC |
"IOAPIC support" |
none |
used |
|
|
CONFIG_IDE |
"Define to include IDE support" |
0 |
always |
|
|
IDE_BOOT_DRIVE |
"Disk number of boot drive" |
0 |
always |
|
|
IDE_SWAB |
"Swap bytes when reading from IDE device" |
none |
used |
|
|
IDE_OFFSET |
"Sector at which to start searching for boot image" |
0 |
always |
|
|
PCI_IO_CFG_EXT |
"allow 4K register space via io CFG port" |
0 |
always |
|
|
PCIC0_CFGADDR |
"Address of PCI Configuration Address Register" |
none |
used |
"0x%x" |
|
PCIC0_CFGDATA |
"Address of PCI Configuration Data Register" |
none |
used |
"0x%x" |
|
ISA_IO_BASE |
"Base address of PCI/ISA I/O address range" |
none |
used |
"0x%x" |
|
ISA_MEM_BASE |
"Base address of PCI/ISA memory address range" |
none |
used |
"0x%x" |
|
PNP_CFGADDR |
"PNP Configuration Address Register offset" |
none |
used |
"0x%x" |
|
PNP_CFGDATA |
"PNP Configuration Data Register offset" |
none |
used |
"0x%x" |
|
_IO_BASE |
"Base address of memory mapped I/O operations" |
none |
used |
"0x%x" |
|
EMBEDDED_RAM_SIZE |
"Embedded boards generally have fixed RAM size" |
none |
used |
|
|
CONFIG_GDB_STUB |
"Compile in gdb stub support?" |
0 |
used |
|
|
HAVE_INIT_TIMER |
"Have a init_timer function" |
0 |
always |
|
|
HAVE_HARD_RESET |
"Have hard reset" |
none |
used |
|
|
HAVE_SMI_HANDLER |
"Set, if the board needs an SMI handler" |
0 |
always |
|
|
MEMORY_HOLE |
"Set to deal with memory hole" |
none |
used |
|
|
MAX_REBOOT_CNT |
"Set maximum reboots" |
3 |
always |
|
|
HAVE_FANCTL |
"Include board specific FAN control initialization" |
0 |
used |
|
|
CONFIG_TSC_X86RDTSC_CALIBRATE_WITH_TIMER2 |
"Use timer2 to callibrate the x86 time stamp counter" |
0 |
used |
|
|
INTEL_PPRO_MTRR |
"" |
none |
used |
|
|
CONFIG_UDELAY_TSC |
"Implement udelay with the x86 time stamp counter" |
0 |
used |
|
|
CONFIG_UDELAY_IO |
"Implement udelay with x86 io registers" |
0 |
used |
|
|
FAKE_SPDROM |
"Use this to fake spd rom values" |
0 |
always |
|
|
HAVE_ACPI_TABLES |
"Define to build ACPI tables" |
0 |
always |
|
|
HAVE_ACPI_RESUME |
"Define to build ACPI with resume support" |
0 |
always |
|
|
ACPI_SSDTX_NUM |
"extra ssdt num for PCI Device" |
0 |
always |
|
|
AGP_APERTURE_SIZE |
"AGP graphics virtual memory aperture size" |
none |
used |
"0x%x" |
|
HT_CHAIN_UNITID_BASE |
"this will be first hypertransport device's unitid base, if sb ht chain only has one ht device, it could be 0" |
1 |
always |
|
|
HT_CHAIN_END_UNITID_BASE |
||||
|
SB_HT_CHAIN_UNITID_OFFSET_ONLY |
||||
|
SB_HT_CHAIN_ON_BUS0 |
||||
|
PCI_BUS_SEGN_BITS |
||||
|
MMCONF_SUPPORT |
"enable mmconfig for pci conf" |
0 |
always |
|
|
MMCONF_SUPPORT_DEFAULT |
"enable mmconfig for pci conf" |
0 |
always |
|
|
MMCONF_BASE_ADDRESS |
"enable mmconfig base address" |
none |
used |
"0x%x" |
|
HW_MEM_HOLE_SIZEK |
||||
|
HW_MEM_HOLE_SIZE_AUTO_INC |
||||
|
CONFIG_VAR_MTRR_HOLE |
"using hole in MTRR instead of increasing method" |
1 |
always |
|
|
K8_HT_FREQ_1G_SUPPORT |
"Optern E0 later could support 1G HT, but still depends MB design" |
0 |
always |
|
|
K8_REV_F_SUPPORT |
||||
|
CBB |
"Opteron cpu bus num base" |
0 |
always |
|
|
CDB |
"Opteron cpu device num base" |
0x18 |
always |
|
|
HT3_SUPPORT |
"Hypertransport 3 support, include ac HT and unganged sublink feature" |
0 |
always |
|
|
EXT_RT_TBL_SUPPORT |
"support AMD family 10 extended routing table via F0x158, normally is enabled when node nums is greater than 8" |
0 |
always |
|
|
EXT_CONF_SUPPORT |
"support AMD family 10 extended config space for ram, bus, io, mmio via F1x110, normally is enabled when HT3 is enabled and non ht chain nums is greater than 4" |
0 |
always |
|
|
DIMM_SUPPORT |
"0x%x" | |||
|
CPU_SOCKET_TYPE |
"cpu socket type, 0x10 mean Socket F, 0x11 mean socket M2, 0x20, Soxket G, and 0x21 mean socket M3" |
0x10 |
always |
|
|
CPU_ADDR_BITS |
"CPU hardware address lines num, for AMD K8 could be 40, and AMD family 10 could be 48" |
36 |
always |
|
|
CONFIG_VGA |
"Include VGA initialisation code" |
0 |
always |
|
|
CONFIG_VGA_ROM_RUN |
"Init x86 ROMs on VGA-class PCI devices" |
0 |
always |
|
|
CONFIG_PCI_ROM_RUN |
"Init x86 ROMs on all PCI devices" |
0 |
always |
|
|
CONFIG_PCI_OPTION_ROM_RUN_YABEL |
"Use Yabel instead of old bios emulator" |
0 |
used |
|
|
CONFIG_YABEL_DEBUG_FLAGS |
"YABEL debug flags, for possible values, see util/x86emu/yabel/debug.h" |
0 |
used |
|
|
CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES |
"Allow Option ROMs executed by YABEL to access the config space of devices other than the one YABEL is running for. This may be needed by some onboard Graphics cards ROMs." |
0 |
used |
|
|
CONFIG_PCI_OPTION_ROM_RUN_REALMODE |
"Use Yabel instead of old bios emulator" |
0 |
used |
|
|
CONFIG_PCI_64BIT_PREF_MEM |
||||
|
CONFIG_AMDMCT |
"use AMD MCT to init RAM instead of native code" |
0 |
always |
|
|
AMD_UCODE_PATCH_FILE |
"name of the microcode patch file" |
none |
used |
"\"%s\"" |
|
K8_MEM_BANK_B_ONLY |
"use AMD K8's memory bank B only to make a 64bit memory system and memory bank A is free, such as Filbert." |
0 |
always |
|
|
CONFIG_VIDEO_MB |
||||
|
CONFIG_GFXUMA |
||||
|
HAVE_MAINBOARD_RESOURCES |
"Enable if the mainboard/chipset requires extra entries in the memory map" |
0 |
always |
|
|
HAVE_LOW_TABLES |
"Enable if ACPI, PIRQ, MP tables are supposed to live in the low megabyte" |
1 |
always |
|
|
HAVE_HIGH_TABLES |
"Enable if ACPI, PIRQ, MP tables are supposed to live at top of memory" |
0 |
always |
|
|
CONFIG_SPLASH_GRAPHIC |
"Paint a splash screen" |
0 |
used |
|
|
CONFIG_GX1_VIDEO |
"Build in GX1's graphic support" |
0 |
used |
|
|
CONFIG_GX1_VIDEOMODE |
"Define video mode after reset" |
none |
used |
|
|
CONFIG_PCIE_CONFIGSPACE_HOLE |
"Leave a hole for PCIe config space in the device allocator" |
0 |
always |
|
|
CONFIG_SANDPOINT_ALTIMUS |
"Configure Sandpoint with Altimus PMC" |
0 |
never |
|
|
CONFIG_SANDPOINT_TALUS |
"Configure Sandpoint with Talus PMC" |
0 |
never |
|
|
CONFIG_SANDPOINT_UNITY |
"Configure Sandpoint with Unity PMC" |
0 |
never |
|
|
CONFIG_SANDPOINT_VALIS |
"Configure Sandpoint with Valis PMC" |
0 |
never |
|
|
CONFIG_SANDPOINT_GYRUS |
"Configure Sandpoint with Gyrus PMC" |
0 |
never |
|
|
CONFIG_BRIQ_750FX |
"Configure briQ with PowerPC 750FX" |
0 |
never |
|
|
CONFIG_BRIQ_7400 |
"Configure briQ with PowerPC G4" |
0 |
never |