## 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_64 select ARCH_BOOTBLOCK_X86_32 select ARCH_VERSTAGE_X86_32 if !VBOOT_STARTS_BEFORE_BOOTBLOCK select ARCH_ROMSTAGE_X86_32 select ARCH_RAMSTAGE_X86_32 # stage selectors for x64 config ARCH_BOOTBLOCK_X86_64 bool select SSE2 config ARCH_VERSTAGE_X86_64 bool select SSE2 config ARCH_ROMSTAGE_X86_64 bool select SSE2 config ARCH_POSTCAR_X86_64 bool default ARCH_ROMSTAGE_X86_64 && POSTCAR_STAGE select SSE2 config ARCH_RAMSTAGE_X86_64 bool select SSE2 config ARCH_ALL_STAGES_X86_64 bool select ARCH_BOOTBLOCK_X86_64 select ARCH_VERSTAGE_X86_64 if !VBOOT_STARTS_BEFORE_BOOTBLOCK select ARCH_ROMSTAGE_X86_64 select ARCH_RAMSTAGE_X86_64 config HAVE_X86_64_SUPPORT bool help Enable support to build and run coreboot in 64-bit mode. When enabling this option for a new platform, it is recommended to provide a config file for Jenkins to build-test the 64-bit option. config USE_X86_64_SUPPORT bool "Run coreboot in long (64-bit) mode" depends on HAVE_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. config PAGE_TABLES_IN_CBFS bool default n config ARCH_X86_64_PGTBL_LOC hex "x86_64 page table location in CBFS" depends on ARCH_BOOTBLOCK_X86_64 && PAGE_TABLES_IN_CBFS default 0xfffe9000 help The position where to place pagetables. Needs to be known at compile time. Must not overlap other files in CBFS. config RESERVED_PHYSICAL_ADDRESS_BITS_SUPPORT bool help On some systems, the upper physical address bits are reserved and used as a tag which is typically related to a memory encryption feature. When selecting this option, the SoC code needs to implement get_reserved_phys_addr_bits so that the common code knows how many of the most significant physical address bits are reserved and can't be used as address bits. # 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 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 PRERAM_CBFS_CACHE_SIZE hex default 0x4000 help Define the size of the Pre-RAM stages CBFS cache. A size of zero disables the CBFS cache feature in pre-memory stages. config POSTRAM_CBFS_CACHE_IN_BSS bool default y if !SOC_AMD_COMMON_BLOCK_NONCAR help Allocate the post-memory CBFS cache scratchpad in the .bss section. CBFS cache will rely on a simple static C buffer while traditionally CBFS cache memory region is reserved in the device memory layout. config RAMSTAGE_CBFS_CACHE_SIZE hex default 0x4000 depends on POSTRAM_CBFS_CACHE_IN_BSS help Define the size of the ramstage CBFS cache. A size of zero disables the CBFS cache feature in ramstage. 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 bool "Switch to normal if CMOS says so" select CONFIGURABLE_CBFS_PREFIX select SEPARATE_ROMSTAGE 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 HAVE_CONFIGURABLE_APMC_SMI_PORT bool help SoCs that have a configurable APMC SMI command port, should select this option and implement pm_acpi_smi_cmd_port() that returns the IO port. 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 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 config DUMP_SMBIOS_TYPE17 bool "Dump part of SMBIOS type17 dimm information" depends on GENERATE_SMBIOS_TABLES config SOC_PHYSICAL_ADDRESS_WIDTH int default 0 help On some System-on-Chip the physical address size available at the SoC level may be different than at the CPU level. This configuration can be use to set the physical address width (in bits) of the SoC. If not set, both CPU and SoC physical address width are assume to be the same. config X86_BOOTBLOCK_EXTRA_PROGRAM_SZ int default 1024 if CHROMEOS default 0 help Add extra space to prevent overlap between .text and .init sections. This is necessary for older linkers (pre-binutils 2.4x) like those used on ChromeOS platforms. The default value is 1024 bytes (1 KiB) for ChromeOS and 0 for other platforms. config DEFAULT_EBDA_LOWMEM hex default 0x100000 help The default value of EBDA low memory is (1024 << 10). config DEFAULT_EBDA_SEGMENT hex default 0xF600 help The default value of EBDA segment is 0xF600. config DEFAULT_EBDA_SIZE hex default 0x400 help The default value of EBDA size is 0x400. config SHADOW_ROM_TABLE_TO_EBDA bool default n help For platforms without writable PAM-F segment support. Put ROM table pointers (e.g. ACPI/SMBIOS low pointers) into EBDA. endif