12fc8483fSLey Foon Tanconfig NIOS2 22fc8483fSLey Foon Tan def_bool y 32fc8483fSLey Foon Tan select ARCH_WANT_OPTIONAL_GPIOLIB 42fc8483fSLey Foon Tan select CLKSRC_OF 52fc8483fSLey Foon Tan select GENERIC_ATOMIC64 62fc8483fSLey Foon Tan select GENERIC_CLOCKEVENTS 72fc8483fSLey Foon Tan select GENERIC_CPU_DEVICES 82fc8483fSLey Foon Tan select GENERIC_IRQ_PROBE 92fc8483fSLey Foon Tan select GENERIC_IRQ_SHOW 102fc8483fSLey Foon Tan select HAVE_ARCH_TRACEHOOK 11*d16d2be1SLey Foon Tan select HAVE_ARCH_KGDB 122fc8483fSLey Foon Tan select IRQ_DOMAIN 132fc8483fSLey Foon Tan select MODULES_USE_ELF_RELA 142fc8483fSLey Foon Tan select OF 152fc8483fSLey Foon Tan select OF_EARLY_FLATTREE 162fc8483fSLey Foon Tan select SOC_BUS 172fc8483fSLey Foon Tan select SPARSE_IRQ 182fc8483fSLey Foon Tan select USB_ARCH_HAS_HCD if USB_SUPPORT 192fc8483fSLey Foon Tan 202fc8483fSLey Foon Tanconfig GENERIC_CSUM 212fc8483fSLey Foon Tan def_bool y 222fc8483fSLey Foon Tan 232fc8483fSLey Foon Tanconfig GENERIC_HWEIGHT 242fc8483fSLey Foon Tan def_bool y 252fc8483fSLey Foon Tan 262fc8483fSLey Foon Tanconfig GENERIC_CALIBRATE_DELAY 272fc8483fSLey Foon Tan def_bool y 282fc8483fSLey Foon Tan 292fc8483fSLey Foon Tanconfig NO_IOPORT_MAP 302fc8483fSLey Foon Tan def_bool y 312fc8483fSLey Foon Tan 322fc8483fSLey Foon Tanconfig HAS_DMA 332fc8483fSLey Foon Tan def_bool y 342fc8483fSLey Foon Tan 352fc8483fSLey Foon Tanconfig FPU 362fc8483fSLey Foon Tan def_bool n 372fc8483fSLey Foon Tan 382fc8483fSLey Foon Tanconfig SWAP 392fc8483fSLey Foon Tan def_bool n 402fc8483fSLey Foon Tan 412fc8483fSLey Foon Tanconfig RWSEM_GENERIC_SPINLOCK 422fc8483fSLey Foon Tan def_bool y 432fc8483fSLey Foon Tan 442fc8483fSLey Foon Tanconfig TRACE_IRQFLAGS_SUPPORT 452fc8483fSLey Foon Tan def_bool n 462fc8483fSLey Foon Tan 472fc8483fSLey Foon Tansource "init/Kconfig" 482fc8483fSLey Foon Tan 492fc8483fSLey Foon Tanmenu "Kernel features" 502fc8483fSLey Foon Tan 512fc8483fSLey Foon Tansource "kernel/Kconfig.preempt" 522fc8483fSLey Foon Tan 532fc8483fSLey Foon Tansource "kernel/Kconfig.freezer" 542fc8483fSLey Foon Tan 552fc8483fSLey Foon Tansource "kernel/Kconfig.hz" 562fc8483fSLey Foon Tan 572fc8483fSLey Foon Tansource "mm/Kconfig" 582fc8483fSLey Foon Tan 592fc8483fSLey Foon Tanconfig FORCE_MAX_ZONEORDER 602fc8483fSLey Foon Tan int "Maximum zone order" 612fc8483fSLey Foon Tan range 9 20 622fc8483fSLey Foon Tan default "11" 632fc8483fSLey Foon Tan help 642fc8483fSLey Foon Tan The kernel memory allocator divides physically contiguous memory 652fc8483fSLey Foon Tan blocks into "zones", where each zone is a power of two number of 662fc8483fSLey Foon Tan pages. This option selects the largest power of two that the kernel 672fc8483fSLey Foon Tan keeps in the memory allocator. If you need to allocate very large 682fc8483fSLey Foon Tan blocks of physically contiguous memory, then you may need to 692fc8483fSLey Foon Tan increase this value. 702fc8483fSLey Foon Tan 712fc8483fSLey Foon Tan This config option is actually maximum order plus one. For example, 722fc8483fSLey Foon Tan a value of 11 means that the largest free memory block is 2^10 pages. 732fc8483fSLey Foon Tan 742fc8483fSLey Foon Tanendmenu 752fc8483fSLey Foon Tan 762fc8483fSLey Foon Tansource "arch/nios2/platform/Kconfig.platform" 772fc8483fSLey Foon Tan 782fc8483fSLey Foon Tanmenu "Processor type and features" 792fc8483fSLey Foon Tan 802fc8483fSLey Foon Tanconfig MMU 812fc8483fSLey Foon Tan def_bool y 822fc8483fSLey Foon Tan 836e5c8f5fSTobias Klauserconfig NR_CPUS 846e5c8f5fSTobias Klauser int 856e5c8f5fSTobias Klauser default "1" 866e5c8f5fSTobias Klauser 872fc8483fSLey Foon Tanconfig NIOS2_ALIGNMENT_TRAP 882fc8483fSLey Foon Tan bool "Catch alignment trap" 892fc8483fSLey Foon Tan default y 902fc8483fSLey Foon Tan help 912fc8483fSLey Foon Tan Nios II CPUs cannot fetch/store data which is not bus aligned, 922fc8483fSLey Foon Tan i.e., a 2 or 4 byte fetch must start at an address divisible by 932fc8483fSLey Foon Tan 2 or 4. Any non-aligned load/store instructions will be trapped and 942fc8483fSLey Foon Tan emulated in software if you say Y here, which has a performance 952fc8483fSLey Foon Tan impact. 962fc8483fSLey Foon Tan 972fc8483fSLey Foon Tancomment "Boot options" 982fc8483fSLey Foon Tan 992fc8483fSLey Foon Tanconfig CMDLINE_BOOL 1002fc8483fSLey Foon Tan bool "Default bootloader kernel arguments" 1012fc8483fSLey Foon Tan default y 1022fc8483fSLey Foon Tan 1032fc8483fSLey Foon Tanconfig CMDLINE 1042fc8483fSLey Foon Tan string "Default kernel command string" 1052fc8483fSLey Foon Tan default "" 1062fc8483fSLey Foon Tan depends on CMDLINE_BOOL 1072fc8483fSLey Foon Tan help 1082fc8483fSLey Foon Tan On some platforms, there is currently no way for the boot loader to 1092fc8483fSLey Foon Tan pass arguments to the kernel. For these platforms, you can supply 1102fc8483fSLey Foon Tan some command-line options at build time by entering them here. In 1112fc8483fSLey Foon Tan other cases you can specify kernel args so that you don't have 1122fc8483fSLey Foon Tan to set them up in board prom initialization routines. 1132fc8483fSLey Foon Tan 1142fc8483fSLey Foon Tanconfig CMDLINE_FORCE 1152fc8483fSLey Foon Tan bool "Force default kernel command string" 1162fc8483fSLey Foon Tan depends on CMDLINE_BOOL 1172fc8483fSLey Foon Tan help 1182fc8483fSLey Foon Tan Set this to have arguments from the default kernel command string 1192fc8483fSLey Foon Tan override those passed by the boot loader. 1202fc8483fSLey Foon Tan 1212fc8483fSLey Foon Tanconfig NIOS2_CMDLINE_IGNORE_DTB 1222fc8483fSLey Foon Tan bool "Ignore kernel command string from DTB" 1232b2b4074STobias Klauser depends on CMDLINE_BOOL 1242fc8483fSLey Foon Tan depends on !CMDLINE_FORCE 1252fc8483fSLey Foon Tan default y 1262fc8483fSLey Foon Tan help 1272fc8483fSLey Foon Tan Set this to ignore the bootargs property from the devicetree's 1282fc8483fSLey Foon Tan chosen node and fall back to CMDLINE if nothing is passed. 1292fc8483fSLey Foon Tan 1302fc8483fSLey Foon Tanconfig NIOS2_PASS_CMDLINE 1312fc8483fSLey Foon Tan bool "Passed kernel command line from u-boot" 1322fc8483fSLey Foon Tan default n 1332fc8483fSLey Foon Tan help 1342fc8483fSLey Foon Tan Use bootargs env variable from u-boot for kernel command line. 1352fc8483fSLey Foon Tan will override "Default kernel command string". 1362fc8483fSLey Foon Tan Say N if you are unsure. 1372fc8483fSLey Foon Tan 13801623627SLey Foon Tanconfig NIOS2_BOOT_LINK_OFFSET 13901623627SLey Foon Tan hex "Link address offset for booting" 14001623627SLey Foon Tan default "0x00500000" 14101623627SLey Foon Tan help 14201623627SLey Foon Tan This option allows you to set the link address offset of the zImage. 14301623627SLey Foon Tan This can be useful if you are on a board which has a small amount of 14401623627SLey Foon Tan memory. 14501623627SLey Foon Tan 1462fc8483fSLey Foon Tanendmenu 1472fc8483fSLey Foon Tan 1482fc8483fSLey Foon Tanmenu "Advanced setup" 1492fc8483fSLey Foon Tan 1502fc8483fSLey Foon Tanconfig ADVANCED_OPTIONS 1512fc8483fSLey Foon Tan bool "Prompt for advanced kernel configuration options" 1522fc8483fSLey Foon Tan help 1532fc8483fSLey Foon Tan 1542fc8483fSLey Foon Tancomment "Default settings for advanced configuration options are used" 1552fc8483fSLey Foon Tan depends on !ADVANCED_OPTIONS 1562fc8483fSLey Foon Tan 1572fc8483fSLey Foon Tanconfig NIOS2_KERNEL_MMU_REGION_BASE_BOOL 1582fc8483fSLey Foon Tan bool "Set custom kernel MMU region base address" 1592fc8483fSLey Foon Tan depends on ADVANCED_OPTIONS 1602fc8483fSLey Foon Tan help 1612fc8483fSLey Foon Tan This option allows you to set the virtual address of the kernel MMU region. 1622fc8483fSLey Foon Tan 1632fc8483fSLey Foon Tan Say N here unless you know what you are doing. 1642fc8483fSLey Foon Tan 1652fc8483fSLey Foon Tanconfig NIOS2_KERNEL_MMU_REGION_BASE 1662fc8483fSLey Foon Tan hex "Virtual base address of the kernel MMU region " if NIOS2_KERNEL_MMU_REGION_BASE_BOOL 1672fc8483fSLey Foon Tan default "0x80000000" 1682fc8483fSLey Foon Tan help 1692fc8483fSLey Foon Tan This option allows you to set the virtual base address of the kernel MMU region. 1702fc8483fSLey Foon Tan 1712fc8483fSLey Foon Tanconfig NIOS2_KERNEL_REGION_BASE_BOOL 1722fc8483fSLey Foon Tan bool "Set custom kernel region base address" 1732fc8483fSLey Foon Tan depends on ADVANCED_OPTIONS 1742fc8483fSLey Foon Tan help 1752fc8483fSLey Foon Tan This option allows you to set the virtual address of the kernel region. 1762fc8483fSLey Foon Tan 1772fc8483fSLey Foon Tan Say N here unless you know what you are doing. 1782fc8483fSLey Foon Tan 1792fc8483fSLey Foon Tanconfig NIOS2_KERNEL_REGION_BASE 1802fc8483fSLey Foon Tan hex "Virtual base address of the kernel region " if NIOS2_KERNEL_REGION_BASE_BOOL 1812fc8483fSLey Foon Tan default "0xc0000000" 1822fc8483fSLey Foon Tan 1832fc8483fSLey Foon Tanconfig NIOS2_IO_REGION_BASE_BOOL 1842fc8483fSLey Foon Tan bool "Set custom I/O region base address" 1852fc8483fSLey Foon Tan depends on ADVANCED_OPTIONS 1862fc8483fSLey Foon Tan help 1872fc8483fSLey Foon Tan This option allows you to set the virtual address of the I/O region. 1882fc8483fSLey Foon Tan 1892fc8483fSLey Foon Tan Say N here unless you know what you are doing. 1902fc8483fSLey Foon Tan 1912fc8483fSLey Foon Tanconfig NIOS2_IO_REGION_BASE 1922fc8483fSLey Foon Tan hex "Virtual base address of the I/O region" if NIOS2_IO_REGION_BASE_BOOL 1932fc8483fSLey Foon Tan default "0xe0000000" 1942fc8483fSLey Foon Tan 1952fc8483fSLey Foon Tanendmenu 1962fc8483fSLey Foon Tan 1972fc8483fSLey Foon Tanmenu "Executable file formats" 1982fc8483fSLey Foon Tan 1992fc8483fSLey Foon Tansource "fs/Kconfig.binfmt" 2002fc8483fSLey Foon Tan 2012fc8483fSLey Foon Tanendmenu 2022fc8483fSLey Foon Tan 2032fc8483fSLey Foon Tansource "net/Kconfig" 2042fc8483fSLey Foon Tan 2052fc8483fSLey Foon Tansource "drivers/Kconfig" 2062fc8483fSLey Foon Tan 2072fc8483fSLey Foon Tansource "fs/Kconfig" 2082fc8483fSLey Foon Tan 2092fc8483fSLey Foon Tansource "arch/nios2/Kconfig.debug" 2102fc8483fSLey Foon Tan 2112fc8483fSLey Foon Tansource "security/Kconfig" 2122fc8483fSLey Foon Tan 2132fc8483fSLey Foon Tansource "crypto/Kconfig" 2142fc8483fSLey Foon Tan 2152fc8483fSLey Foon Tansource "lib/Kconfig" 216