## SPDX-License-Identifier: GPL-2.0-only config ARCH_X86 bool select PCI select RELOCATABLE_MODULES select HAVE_ASAN_IN_RAMSTAGE if ARCH_X86 # stage selectors for x86 config ARCH_BOOTBLOCK_X86_32 bool config ARCH_VERSTAGE_X86_32 bool config ARCH_ROMSTAGE_X86_32 bool config ARCH_POSTCAR_X86_32 bool default ARCH_ROMSTAGE_X86_32 && POSTCAR_STAGE config ARCH_RAMSTAGE_X86_32 bool config ARCH_ALL_STAGES_X86_32 bool default ARCH_ALL_STAGES_X86 && !ARCH_ALL_STAGES_X86_64 select ARCH_BOOTBLOCK_X86_32 select ARCH_VERSTAGE_X86_32 select ARCH_ROMSTAGE_X86_32 select ARCH_RAMSTAGE_X86_32 # stage selectors for x64 config ARCH_BOOTBLOCK_X86_64 bool config ARCH_VERSTAGE_X86_64 bool config ARCH_ROMSTAGE_X86_64 bool config ARCH_POSTCAR_X86_64 bool default ARCH_ROMSTAGE_X86_64 && POSTCAR_STAGE config ARCH_RAMSTAGE_X86_64 bool config ARCH_ALL_STAGES_X86_64 bool select ARCH_BOOTBLOCK_X86_64 select ARCH_VERSTAGE_X86_64 select ARCH_ROMSTAGE_X86_64 select ARCH_RAMSTAGE_X86_64 config ARCH_ALL_STAGES_X86 bool default y config HAVE_EXP_X86_64_SUPPORT bool help Enable experimental support to build and run coreboot in 64-bit mode. When selecting this option for a new platform, it is highly advisable to provide a config file for Jenkins to build-test the 64-bit option. config USE_EXP_X86_64_SUPPORT bool "[EXPERIMENTAL] Run coreboot in long (64-bit) mode" depends on HAVE_EXP_X86_64_SUPPORT select ARCH_ALL_STAGES_X86_64 help When set, most of coreboot runs in long (64-bit) mode instead of the usual protected flat (32-bit) mode. 64-bit CPUs and OSes can be used irrespective of whether coreboot runs in 32-bit or 64-bit mode. This is an experimental option: do not enable unless one wants to test it and has the means to recover a system when coreboot fails to boot. config ARCH_X86_64_PGTBL_LOC hex "x86_64 page table location in CBFS" depends on ARCH_BOOTBLOCK_X86_64 default 0xfffe9000 help The position where to place pagetables. Needs to be known at compile time. Must not overlap other files in CBFS. config USE_MARCH_586 def_bool n help Allow a platform or processor to select to be compiled using the '-march=i586' option instead of the typical '-march=i686' # This is an SMP option. It relates to starting up APs. # It is usually set in mainboard/*/Kconfig. # TODO: Improve description. config AP_IN_SIPI_WAIT bool default n depends on ARCH_X86 && SMP config RESET_VECTOR_IN_RAM bool depends on ARCH_X86 select NO_XIP_EARLY_STAGES help Select this option if the x86 processor's reset vector is in preinitialized DRAM instead of the traditional 0xfffffff0 location. # Aligns 16bit entry code in bootblock so that hyper-threading CPUs # can boot AP CPUs to enable their shared caches. config SIPI_VECTOR_IN_ROM bool default n depends on ARCH_X86 # Traditionally BIOS region on SPI flash boot media was memory mapped right below # 4G and it was the last region in the IFD. This way translation between CPU # address space to flash address was trivial. However some IFDs on newer SoCs # have BIOS region sandwiched between descriptor and other regions. Turning on # X86_CUSTOM_BOOTMEDIA disables X86_TOP4G_BOOTMEDIA_MAP which allows the # soc code to provide custom mmap_boot.c. config X86_CUSTOM_BOOTMEDIA bool config X86_TOP4G_BOOTMEDIA_MAP bool depends on !X86_CUSTOM_BOOTMEDIA default y # This is something you almost certainly don't want to mess with. # How many SIPIs do we send when starting up APs and cores? # The answer in 2000 or so was '2'. Nowadays, on many systems, # it is 1. Set a safe default here, and you can override it # on reasonable platforms. config NUM_IPI_STARTS int default 2 config PRERAM_CBMEM_CONSOLE_SIZE hex default 0xc00 help Increase this value if preram cbmem console is getting truncated config CBFS_MCACHE_SIZE hex depends on !NO_CBFS_MCACHE default 0x4000 help Increase this value if you see CBFS mcache overflow warnings. Do NOT change this value for vboot RW updates! config PC80_SYSTEM bool default y if ARCH_X86 config BOOTBLOCK_DEBUG_SPINLOOP bool default n help Add a spin (JMP .) in bootblock_crt0.S during early bootblock to wait for a JTAG debugger to break into the execution sequence. config HAVE_CMOS_DEFAULT def_bool n depends on HAVE_OPTION_TABLE config CMOS_DEFAULT_FILE string default "src/mainboard/\$(MAINBOARDDIR)/cmos.default" depends on HAVE_CMOS_DEFAULT config HPET_MIN_TICKS hex config C_ENV_BOOTBLOCK_SIZE hex default 0x40000 if !FIXED_BOOTBLOCK_SIZE help This is only the default maximum of bootblock size for linking purposes. Platforms may provide different limit and need to specify this when FIXED_BOOTBLOCK_SIZE is selected. config FIXED_BOOTBLOCK_SIZE bool # Default address romstage is to be linked at config ROMSTAGE_ADDR hex default 0x2000000 # Default address verstage is to be linked at config VERSTAGE_ADDR hex default 0x2000000 # Use the post CAR infrastructure for tearing down cache-as-ram # from a program loaded in RAM and subsequently loading ramstage. config POSTCAR_STAGE def_bool y depends on ARCH_X86 depends on !RESET_VECTOR_IN_RAM config VERSTAGE_DEBUG_SPINLOOP bool default n help Add a spin (JMP .) in assembly_entry.S during early verstage to wait for a JTAG debugger to break into the execution sequence. config ROMSTAGE_DEBUG_SPINLOOP bool default n help Add a spin (JMP .) in assembly_entry.S during early romstage to wait for a JTAG debugger to break into the execution sequence. choice prompt "Bootblock behaviour" default BOOTBLOCK_SIMPLE depends on !VBOOT config BOOTBLOCK_SIMPLE bool "Always load fallback" config BOOTBLOCK_NORMAL select CONFIGURABLE_CBFS_PREFIX bool "Switch to normal if CMOS says so" endchoice config SKIP_MAX_REBOOT_CNT_CLEAR bool "Do not clear reboot count after successful boot" depends on BOOTBLOCK_NORMAL help Do not clear the reboot count immediately after successful boot. Set to allow the payload to control normal/fallback image recovery. Note that it is the responsibility of the payload to reset the normal boot bit to 1 after each successful boot. config ACPI_BERT bool depends on HAVE_ACPI_TABLES help Build an ACPI Boot Error Record Table. config COLLECT_TIMESTAMPS_NO_TSC bool default n depends on COLLECT_TIMESTAMPS help Use a non-TSC platform-dependent source for timestamps. config COLLECT_TIMESTAMPS_TSC bool default y if !COLLECT_TIMESTAMPS_NO_TSC default n depends on COLLECT_TIMESTAMPS help Use the TSC as the timestamp source. config PAGING_IN_CACHE_AS_RAM bool default n depends on ARCH_X86 help Chipsets scan select this option to preallocate area in cache-as-ram for storing paging data structures. PAE paging is currently the only thing being supported. config NUM_CAR_PAGE_TABLE_PAGES int default 5 depends on PAGING_IN_CACHE_AS_RAM help The number of 4KiB pages that should be pre-allocated for page tables. # Provide the interrupt handlers to every stage. Not all # stages may take advantage. config IDT_IN_EVERY_STAGE bool default n depends on ARCH_X86 config HAVE_CF9_RESET bool config HAVE_CF9_RESET_PREPARE bool depends on HAVE_CF9_RESET config PIRQ_ROUTE bool default n config MAX_PIRQ_LINKS int default 4 depends on PIRQ_ROUTE help This variable specifies the number of PIRQ interrupt links which are routable. On most chipsets, this is 4, INTA through INTD. Some chipsets offer more than four links, commonly up to INTH. They may also have a separate link for ATA or IOAPIC interrupts. When the PIRQ table specifies links greater than 4, pirq_route_irqs will not function properly, unless this variable is correctly set. config MAX_ACPI_TABLE_SIZE_KB int default 144 help Set the maximum size of all ACPI tables in KiB. config MEMLAYOUT_LD_FILE string default "src/arch/x86/memlayout.ld" config DEBUG_HW_BREAKPOINTS bool default y help Enable support for hardware data and instruction breakpoints through the x86 debug registers config DEBUG_HW_BREAKPOINTS_IN_ALL_STAGES bool default y depends on DEBUG_HW_BREAKPOINTS && IDT_IN_EVERY_STAGE config DEBUG_NULL_DEREF_BREAKPOINTS bool default y depends on DEBUG_HW_BREAKPOINTS help Enable support for catching null dereferences and instruction execution config DEBUG_NULL_DEREF_BREAKPOINTS_IN_ALL_STAGES bool default y depends on DEBUG_NULL_DEREF_BREAKPOINTS && DEBUG_HW_BREAKPOINTS_IN_ALL_STAGES config DEBUG_NULL_DEREF_HALT bool default n depends on DEBUG_NULL_DEREF_BREAKPOINTS help When enabled null dereferences and instruction fetches will halt execution. Otherwise an error will be printed. # Some EC need an "EC firmware pointer" (a data structure hinting the address # of its firmware blobs) being put at a fixed position. Its space # (__section__(".ecfw_ptr")) should be reserved if it lies in the range of a # stage. Different EC may have different format and/or value for it. The actual # address of EC firmware pointer should be provided in the Kconfig of the EC # requiring it, and its value could be filled by linking a read-only global # data object to the section above. config ECFW_PTR_ADDR hex help Address of reserved space for EC firmware pointer, which should not overlap other data such as reset vector or FIT pointer if present. config ECFW_PTR_SIZE int help Size of reserved space for EC firmware pointer endif