1# SPDX-License-Identifier: GPL-2.0 2# Hexagon configuration 3comment "Linux Kernel Configuration for Hexagon" 4 5config HEXAGON 6 def_bool y 7 select ARCH_32BIT_OFF_T 8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE 9 select ARCH_NO_PREEMPT 10 select ARCH_WANT_FRAME_POINTERS 11 select DMA_GLOBAL_POOL 12 select HAVE_PAGE_SIZE_4KB 13 select HAVE_PAGE_SIZE_16KB 14 select HAVE_PAGE_SIZE_64KB 15 select HAVE_PAGE_SIZE_256KB 16 select FRAME_POINTER 17 # Other pending projects/to-do items. 18 # select HAVE_REGS_AND_STACK_ACCESS_API 19 # select HAVE_HW_BREAKPOINT if PERF_EVENTS 20 # select ARCH_HAS_CPU_IDLE_WAIT 21 # select GPIOLIB 22 # select HAVE_CLK 23 # select GENERIC_PENDING_IRQ if SMP 24 select GENERIC_ATOMIC64 25 select HAVE_PERF_EVENTS 26 # GENERIC_ALLOCATOR is used by dma_alloc_coherent() 27 select GENERIC_ALLOCATOR 28 select GENERIC_IRQ_PROBE 29 select GENERIC_IRQ_SHOW 30 select HAVE_ARCH_KGDB 31 select HAVE_ARCH_TRACEHOOK 32 select NEED_SG_DMA_LENGTH 33 select GENERIC_IOREMAP 34 select GENERIC_SMP_IDLE_THREAD 35 select STACKTRACE_SUPPORT 36 select GENERIC_CLOCKEVENTS_BROADCAST 37 select LOCK_MM_AND_FIND_VMA 38 select MODULES_USE_ELF_RELA 39 select GENERIC_CPU_DEVICES 40 select ARCH_WANT_LD_ORPHAN_WARN 41 select TRACE_IRQFLAGS_SUPPORT 42 help 43 Qualcomm Hexagon is a processor architecture designed for high 44 performance and low power across a wide variety of applications. 45 46config HEXAGON_PHYS_OFFSET 47 def_bool y 48 help 49 Platforms that don't load the kernel at zero set this. 50 51config LOCKDEP_SUPPORT 52 def_bool y 53 54config EARLY_PRINTK 55 def_bool y 56 57config MMU 58 def_bool y 59 60config NO_IOPORT_MAP 61 def_bool y 62 63config GENERIC_CSUM 64 def_bool y 65 66config GENERIC_HWEIGHT 67 def_bool y 68 69config STACKTRACE_SUPPORT 70 def_bool y 71 select STACKTRACE 72 73config GENERIC_BUG 74 def_bool y 75 depends on BUG 76 77menu "Machine selection" 78 79choice 80 prompt "System type" 81 default HEXAGON_COMET 82 83config HEXAGON_COMET 84 bool "Comet Board" 85 help 86 Support for the Comet platform. 87 88endchoice 89 90config HEXAGON_ARCH_VERSION 91 int "Architecture version" 92 default 2 93 94config CMDLINE 95 string "Default kernel command string" 96 default "" 97 help 98 On some platforms, there is currently no way for the boot loader 99 to pass arguments to the kernel. For these, you should supply some 100 command-line options at build time by entering them here. At a 101 minimum, you should specify the memory size and the root device 102 (e.g., mem=64M root=/dev/nfs). 103 104config SMP 105 bool "Multi-Processing support" 106 help 107 Enables SMP support in the kernel. If unsure, say "Y" 108 109config NR_CPUS 110 int "Maximum number of CPUs" if SMP 111 range 2 6 if SMP 112 default "1" if !SMP 113 default "6" if SMP 114 help 115 This allows you to specify the maximum number of CPUs which this 116 kernel will support. The maximum supported value is 6 and the 117 minimum value which makes sense is 2. 118 119 This is purely to save memory - each supported CPU adds 120 approximately eight kilobytes to the kernel image. 121 122source "kernel/Kconfig.hz" 123 124endmenu 125