1 menu "x86 architecture"
8 prompt "Mainboard vendor"
9 default VENDOR_EMULATION
11 config VENDOR_COREBOOT
14 config VENDOR_EMULATION
25 # board-specific options below
26 source "board/coreboot/Kconfig"
27 source "board/emulation/Kconfig"
28 source "board/google/Kconfig"
29 source "board/intel/Kconfig"
31 # platform-specific options below
32 source "arch/x86/cpu/baytrail/Kconfig"
33 source "arch/x86/cpu/coreboot/Kconfig"
34 source "arch/x86/cpu/ivybridge/Kconfig"
35 source "arch/x86/cpu/qemu/Kconfig"
36 source "arch/x86/cpu/quark/Kconfig"
37 source "arch/x86/cpu/queensbay/Kconfig"
39 # architecture-specific options below
41 config SYS_MALLOC_F_LEN
50 depends on X86_RESET_VECTOR
59 default 0xfed00000 if !HPET_ADDRESS_OVERRIDE
68 config X86_RESET_VECTOR
72 config RESET_SEG_START
74 depends on X86_RESET_VECTOR
79 depends on X86_RESET_VECTOR
84 depends on X86_RESET_VECTOR
87 config SYS_X86_START16
89 depends on X86_RESET_VECTOR
92 config BOARD_ROMSIZE_KB_512
94 config BOARD_ROMSIZE_KB_1024
96 config BOARD_ROMSIZE_KB_2048
98 config BOARD_ROMSIZE_KB_4096
100 config BOARD_ROMSIZE_KB_8192
102 config BOARD_ROMSIZE_KB_16384
106 prompt "ROM chip size"
107 depends on X86_RESET_VECTOR
108 default UBOOT_ROMSIZE_KB_512 if BOARD_ROMSIZE_KB_512
109 default UBOOT_ROMSIZE_KB_1024 if BOARD_ROMSIZE_KB_1024
110 default UBOOT_ROMSIZE_KB_2048 if BOARD_ROMSIZE_KB_2048
111 default UBOOT_ROMSIZE_KB_4096 if BOARD_ROMSIZE_KB_4096
112 default UBOOT_ROMSIZE_KB_8192 if BOARD_ROMSIZE_KB_8192
113 default UBOOT_ROMSIZE_KB_16384 if BOARD_ROMSIZE_KB_16384
115 Select the size of the ROM chip you intend to flash U-Boot on.
117 The build system will take care of creating a u-boot.rom file
118 of the matching size.
120 config UBOOT_ROMSIZE_KB_512
123 Choose this option if you have a 512 KB ROM chip.
125 config UBOOT_ROMSIZE_KB_1024
126 bool "1024 KB (1 MB)"
128 Choose this option if you have a 1024 KB (1 MB) ROM chip.
130 config UBOOT_ROMSIZE_KB_2048
131 bool "2048 KB (2 MB)"
133 Choose this option if you have a 2048 KB (2 MB) ROM chip.
135 config UBOOT_ROMSIZE_KB_4096
136 bool "4096 KB (4 MB)"
138 Choose this option if you have a 4096 KB (4 MB) ROM chip.
140 config UBOOT_ROMSIZE_KB_8192
141 bool "8192 KB (8 MB)"
143 Choose this option if you have a 8192 KB (8 MB) ROM chip.
145 config UBOOT_ROMSIZE_KB_16384
146 bool "16384 KB (16 MB)"
148 Choose this option if you have a 16384 KB (16 MB) ROM chip.
152 # Map the config names to an integer (KB).
153 config UBOOT_ROMSIZE_KB
155 default 512 if UBOOT_ROMSIZE_KB_512
156 default 1024 if UBOOT_ROMSIZE_KB_1024
157 default 2048 if UBOOT_ROMSIZE_KB_2048
158 default 4096 if UBOOT_ROMSIZE_KB_4096
159 default 8192 if UBOOT_ROMSIZE_KB_8192
160 default 16384 if UBOOT_ROMSIZE_KB_16384
162 # Map the config names to a hex value (bytes).
165 default 0x80000 if UBOOT_ROMSIZE_KB_512
166 default 0x100000 if UBOOT_ROMSIZE_KB_1024
167 default 0x200000 if UBOOT_ROMSIZE_KB_2048
168 default 0x400000 if UBOOT_ROMSIZE_KB_4096
169 default 0x800000 if UBOOT_ROMSIZE_KB_8192
170 default 0xc00000 if UBOOT_ROMSIZE_KB_12288
171 default 0x1000000 if UBOOT_ROMSIZE_KB_16384
174 bool "Platform requires Intel Management Engine"
176 Newer higher-end devices have an Intel Management Engine (ME)
177 which is a very large binary blob (typically 1.5MB) which is
178 required for the platform to work. This enforces a particular
179 SPI flash format. You will need to supply the me.bin file in
180 your board directory.
183 bool "Perform a simple RAM test after SDRAM initialisation"
185 If there is something wrong with SDRAM then the platform will
186 often crash within U-Boot or the kernel. This option enables a
187 very simple RAM test that quickly checks whether the SDRAM seems
188 to work correctly. It is not exhaustive but can save time by
189 detecting obvious failures.
191 config MARK_GRAPHICS_MEM_WRCOMB
192 bool "Mark graphics memory as write-combining"
195 The graphics performance may increase if the graphics
196 memory is set as write-combining cache type. This option
197 enables marking the graphics memory as write-combining.
200 bool "Add an Firmware Support Package binary"
202 Select this option to add an Firmware Support Package binary to
203 the resulting U-Boot image. It is a binary blob which U-Boot uses
204 to set up SDRAM and other chipset specific initialization.
206 Note: Without this binary U-Boot will not be able to set up its
207 SDRAM so will not boot.
210 string "Firmware Support Package binary filename"
214 The filename of the file to use as Firmware Support Package binary
215 in the board directory.
218 hex "Firmware Support Package binary location"
222 FSP is not Position Independent Code (PIC) and the whole FSP has to
223 be rebased if it is placed at a location which is different from the
224 perferred base address specified during the FSP build. Use Intel's
225 Binary Configuration Tool (BCT) to do the rebase.
227 The default base address of 0xfffc0000 indicates that the binary must
228 be located at offset 0xc0000 from the beginning of a 1MB flash device.
230 config FSP_TEMP_RAM_ADDR
235 Stack top address which is used in FspInit after DRAM is ready and
239 bool "Enable Symmetric Multiprocessing"
242 Enable use of more than one CPU in U-Boot and the Operating System
243 when loaded. Each CPU will be started up and information can be
244 obtained using the 'cpu' command. If this option is disabled, then
245 only one CPU will be enabled regardless of the number of CPUs
249 int "Maximum number of CPUs permitted"
253 When using multi-CPU chips it is possible for U-Boot to start up
254 more than one CPU. The stack memory used by all of these CPUs is
255 pre-allocated so at present U-Boot wants to know the maximum
256 number of CPUs that may be present. Set this to at least as high
257 as the number of CPUs in your system (it uses about 4KB of RAM for
265 Each additional CPU started by U-Boot requires its own stack. This
266 option sets the stack size used by each CPU and directly affects
267 the memory used by this initialisation process. Typically 4KB is
270 config TSC_CALIBRATION_BYPASS
271 bool "Bypass Time-Stamp Counter (TSC) calibration"
274 By default U-Boot automatically calibrates Time-Stamp Counter (TSC)
275 running frequency via Model-Specific Register (MSR) and Programmable
276 Interval Timer (PIT). If the calibration does not work on your board,
277 select this option and provide a hardcoded TSC running frequency with
278 CONFIG_TSC_FREQ_IN_MHZ below.
280 Normally this option should be turned on in a simulation environment
283 config TSC_FREQ_IN_MHZ
284 int "Time-Stamp Counter (TSC) running frequency in MHz"
285 depends on TSC_CALIBRATION_BYPASS
288 The running frequency in MHz of Time-Stamp Counter (TSC).
292 config GENERATE_PIRQ_TABLE
293 bool "Generate a PIRQ table"
296 Generate a PIRQ routing table for this board. The PIRQ routing table
297 is generated by U-Boot in the system memory from 0xf0000 to 0xfffff
298 at every 16-byte boundary with a PCI IRQ routing signature ("$PIR").
299 It specifies the interrupt router information as well how all the PCI
300 devices' interrupt pins are wired to PIRQs.
302 config GENERATE_SFI_TABLE
303 bool "Generate a SFI (Simple Firmware Interface) table"
305 The Simple Firmware Interface (SFI) provides a lightweight method
306 for platform firmware to pass information to the operating system
307 via static tables in memory. Kernel SFI support is required to
308 boot on SFI-only platforms. If you have ACPI tables then these are
311 U-Boot writes this table in write_sfi_table() just before booting
314 For more information, see http://simplefirmware.org
316 config GENERATE_MP_TABLE
317 bool "Generate an MP (Multi-Processor) table"
320 Generate an MP (Multi-Processor) table for this board. The MP table
321 provides a way for the operating system to support for symmetric
322 multiprocessing as well as symmetric I/O interrupt handling with
323 the local APIC and I/O APIC.
327 config MAX_PIRQ_LINKS
331 This variable specifies the number of PIRQ interrupt links which are
332 routable. On most older chipsets, this is 4, PIRQA through PIRQD.
333 Some newer chipsets offer more than four links, commonly up to PIRQH.
335 config IRQ_SLOT_COUNT
339 U-Boot can support up to 254 IRQ slot info in the PIRQ routing table
340 which in turns forms a table of exact 4KiB. The default value 128
341 should be enough for most boards. If this does not fit your board,
342 change it according to your needs.
344 config PCIE_ECAM_BASE
348 This is the memory-mapped address of PCI configuration space, which
349 is only available through the Enhanced Configuration Access
350 Mechanism (ECAM) with PCI Express. It can be set up almost
351 anywhere. Before it is set up, it is possible to access PCI
352 configuration space through I/O access, but memory access is more
353 convenient. Using this, PCI can be scanned and configured. This
354 should be set to a region that does not conflict with memory
355 assigned to PCI devices - i.e. the memory and prefetch regions, as
356 passed to pci_set_region().