diff options
Diffstat (limited to 'arch/xtensa/Kconfig')
| -rw-r--r-- | arch/xtensa/Kconfig | 121 |
1 files changed, 104 insertions, 17 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 8ac599aa6d99..f2f9cd9cde50 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -2,47 +2,62 @@ config XTENSA def_bool y select ARCH_32BIT_OFF_T + select ARCH_HAS_CPU_CACHE_ALIASING select ARCH_HAS_BINFMT_FLAT if !MMU + select ARCH_HAS_CURRENT_STACK_POINTER + select ARCH_HAS_DEBUG_VM_PGTABLE select ARCH_HAS_DMA_PREP_COHERENT if MMU + select ARCH_HAS_GCOV_PROFILE_ALL + select ARCH_HAS_KCOV select ARCH_HAS_SYNC_DMA_FOR_CPU if MMU select ARCH_HAS_SYNC_DMA_FOR_DEVICE if MMU select ARCH_HAS_DMA_SET_UNCACHED if MMU select ARCH_HAS_STRNCPY_FROM_USER if !KASAN select ARCH_HAS_STRNLEN_USER + select ARCH_NEED_CMPXCHG_1_EMU select ARCH_USE_MEMTEST select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS - select ARCH_WANT_FRAME_POINTERS select ARCH_WANT_IPC_PARSE_VERSION select BUILDTIME_TABLE_SORT + select GENERIC_BUILTIN_DTB select CLONE_BACKWARDS select COMMON_CLK - select DMA_REMAP if MMU + select DMA_NONCOHERENT_MMAP if MMU select GENERIC_ATOMIC64 select GENERIC_IRQ_SHOW + select GENERIC_LIB_CMPDI2 + select GENERIC_LIB_MULDI3 + select GENERIC_LIB_UCMPDI2 select GENERIC_PCI_IOMAP select GENERIC_SCHED_CLOCK + select GENERIC_IOREMAP if MMU select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL select HAVE_ARCH_KASAN if MMU && !XIP_KERNEL + select HAVE_ARCH_KCSAN select HAVE_ARCH_SECCOMP_FILTER select HAVE_ARCH_TRACEHOOK + select HAVE_ASM_MODVERSIONS + select HAVE_CONTEXT_TRACKING_USER select HAVE_DEBUG_KMEMLEAK select HAVE_DMA_CONTIGUOUS select HAVE_EXIT_THREAD select HAVE_FUNCTION_TRACER + select HAVE_GCC_PLUGINS if GCC_VERSION >= 120000 select HAVE_HW_BREAKPOINT if PERF_EVENTS select HAVE_IRQ_TIME_ACCOUNTING + select HAVE_PAGE_SIZE_4KB select HAVE_PCI select HAVE_PERF_EVENTS select HAVE_STACKPROTECTOR select HAVE_SYSCALL_TRACEPOINTS + select HAVE_VIRT_CPU_ACCOUNTING_GEN select IRQ_DOMAIN + select LOCK_MM_AND_FIND_VMA select MODULES_USE_ELF_RELA select PERF_USE_VMALLOC - select SET_FS select TRACE_IRQFLAGS_SUPPORT - select VIRT_TO_BUS help Xtensa processors are 32-bit RISC machines designed by Tensilica primarily for embedded systems. These processors are both @@ -60,6 +75,9 @@ config ARCH_HAS_ILOG2_U32 config ARCH_HAS_ILOG2_U64 def_bool n +config ARCH_MTD_XIP + def_bool y + config NO_IOPORT_MAP def_bool n @@ -75,6 +93,7 @@ config STACKTRACE_SUPPORT config MMU def_bool n + select PFAULT config HAVE_XTENSA_GPIO32 def_bool n @@ -89,6 +108,9 @@ config CPU_BIG_ENDIAN config CPU_LITTLE_ENDIAN def_bool !CPU_BIG_ENDIAN +config CC_HAVE_CALL0_ABI + def_bool $(success,test "$(shell,echo __XTENSA_CALL0_ABI__ | $(CC) -mabi=call0 -E -P - 2>/dev/null)" = 1) + menu "Processor type and features" choice @@ -126,7 +148,7 @@ config XTENSA_VARIANT_CUSTOM_NAME depends on XTENSA_VARIANT_CUSTOM help Provide the name of a custom Xtensa processor variant. - This CORENAME selects arch/xtensa/variant/CORENAME. + This CORENAME selects arch/xtensa/variants/CORENAME. Don't forget you have to select MMU if you have one. config XTENSA_VARIANT_NAME @@ -171,6 +193,16 @@ config XTENSA_FAKE_NMI If unsure, say N. +config PFAULT + bool "Handle protection faults" if EXPERT && !MMU + default y + help + Handle protection faults. MMU configurations must enable it. + noMMU configurations may disable it if used memory map never + generates protection faults or faults are always fatal. + + If unsure, say Y. + config XTENSA_UNALIGNED_USER bool "Unaligned memory access in user space" help @@ -180,6 +212,18 @@ config XTENSA_UNALIGNED_USER Say Y here to enable unaligned memory access in user space. +config XTENSA_LOAD_STORE + bool "Load/store exception handler for memory only readable with l32" + help + The Xtensa architecture only allows reading memory attached to its + instruction bus with l32r and l32i instructions, all other + instructions raise an exception with the LoadStoreErrorCause code. + This makes it hard to use some configurations, e.g. store string + literals in FLASH memory attached to the instruction bus. + + Say Y here to enable exception handler that allows transparent + byte and 2-byte access to memory attached to instruction bus. + config HAVE_SMP bool "System Supports SMP (MX)" depends on XTENSA_VARIANT_CUSTOM @@ -221,6 +265,15 @@ config HOTPLUG_CPU Say N if you want to disable CPU hotplug. +config SECONDARY_RESET_VECTOR + bool "Secondary cores use alternative reset vector" + default y + depends on HAVE_SMP + help + Secondary cores may be configured to use alternative reset vector, + or all cores may use primary reset vector. + Say Y here to supply handler for the alternative reset location. + config FAST_SYSCALL_XTENSA bool "Enable fast atomic syscalls" default n @@ -247,6 +300,38 @@ config FAST_SYSCALL_SPILL_REGISTERS If unsure, say N. +choice + prompt "Kernel ABI" + default KERNEL_ABI_DEFAULT + help + Select ABI for the kernel code. This ABI is independent of the + supported userspace ABI and any combination of the + kernel/userspace ABI is possible and should work. + + In case both kernel and userspace support only call0 ABI + all register windows support code will be omitted from the + build. + + If unsure, choose the default ABI. + +config KERNEL_ABI_DEFAULT + bool "Default ABI" + help + Select this option to compile kernel code with the default ABI + selected for the toolchain. + Normally cores with windowed registers option use windowed ABI and + cores without it use call0 ABI. + +config KERNEL_ABI_CALL0 + bool "Call0 ABI" if CC_HAVE_CALL0_ABI + help + Select this option to compile kernel code with call0 ABI even with + toolchain that defaults to windowed ABI. + When this option is not selected the default toolchain ABI will + be used for the kernel code. + +endchoice + config USER_ABI_CALL0 bool @@ -378,7 +463,7 @@ config USE_OF help Include support for flattened device tree machine descriptions. -config BUILTIN_DTB_SOURCE +config BUILTIN_DTB_NAME string "DTB to build into the kernel image" depends on OF @@ -707,24 +792,26 @@ config HIGHMEM If unsure, say Y. -config FORCE_MAX_ZONEORDER - int "Maximum zone order" - default "11" +config ARCH_FORCE_MAX_ORDER + int "Order of maximal physically contiguous allocations" + default "10" help - The kernel memory allocator divides physically contiguous memory - blocks into "zones", where each zone is a power of two number of - pages. This option selects the largest power of two that the kernel - keeps in the memory allocator. If you need to allocate very large - blocks of physically contiguous memory, then you may need to - increase this value. + The kernel page allocator limits the size of maximal physically + contiguous allocations. The limit is called MAX_PAGE_ORDER and it + defines the maximal power of two of number of pages that can be + allocated as a single contiguous block. This option allows + overriding the default setting when ability to allocate very + large blocks of physically contiguous memory is required. - This config option is actually maximum order plus one. For example, - a value of 11 means that the largest free memory block is 2^10 pages. + Don't change if unsure. endmenu menu "Power management options" +config ARCH_HIBERNATION_POSSIBLE + def_bool y + source "kernel/power/Kconfig" endmenu |