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 HAVE_OPROFILE 11 # Other pending projects/to-do items. 12 # select HAVE_REGS_AND_STACK_ACCESS_API 13 # select HAVE_HW_BREAKPOINT if PERF_EVENTS 14 # select ARCH_HAS_CPU_IDLE_WAIT 15 # select GPIOLIB 16 # select HAVE_CLK 17 # select GENERIC_PENDING_IRQ if SMP 18 select GENERIC_ATOMIC64 19 select HAVE_PERF_EVENTS 20 # GENERIC_ALLOCATOR is used by dma_alloc_coherent() 21 select GENERIC_ALLOCATOR 22 select GENERIC_IRQ_SHOW 23 select HAVE_ARCH_KGDB 24 select HAVE_ARCH_TRACEHOOK 25 select NEED_SG_DMA_LENGTH 26 select NO_IOPORT_MAP 27 select GENERIC_IOMAP 28 select GENERIC_SMP_IDLE_THREAD 29 select STACKTRACE_SUPPORT 30 select GENERIC_CLOCKEVENTS 31 select GENERIC_CLOCKEVENTS_BROADCAST 32 select MODULES_USE_ELF_RELA 33 select GENERIC_CPU_DEVICES 34 select SET_FS 35 help 36 Qualcomm Hexagon is a processor architecture designed for high 37 performance and low power across a wide variety of applications. 38 39config HEXAGON_PHYS_OFFSET 40 def_bool y 41 help 42 Platforms that don't load the kernel at zero set this. 43 44config FRAME_POINTER 45 def_bool y 46 47config LOCKDEP_SUPPORT 48 def_bool y 49 50config EARLY_PRINTK 51 def_bool y 52 53config MMU 54 def_bool y 55 56config TRACE_IRQFLAGS_SUPPORT 57 def_bool y 58 59config GENERIC_CSUM 60 def_bool y 61 62# 63# Use the generic interrupt handling code in kernel/irq/: 64# 65config GENERIC_IRQ_PROBE 66 def_bool y 67 68config GENERIC_HWEIGHT 69 def_bool y 70 71config STACKTRACE_SUPPORT 72 def_bool y 73 select STACKTRACE 74 75config GENERIC_BUG 76 def_bool y 77 depends on BUG 78 79menu "Machine selection" 80 81choice 82 prompt "System type" 83 default HEXAGON_COMET 84 85config HEXAGON_COMET 86 bool "Comet Board" 87 help 88 Support for the Comet platform. 89 90endchoice 91 92config HEXAGON_ARCH_VERSION 93 int "Architecture version" 94 default 2 95 96config CMDLINE 97 string "Default kernel command string" 98 default "" 99 help 100 On some platforms, there is currently no way for the boot loader 101 to pass arguments to the kernel. For these, you should supply some 102 command-line options at build time by entering them here. At a 103 minimum, you should specify the memory size and the root device 104 (e.g., mem=64M root=/dev/nfs). 105 106config SMP 107 bool "Multi-Processing support" 108 help 109 Enables SMP support in the kernel. If unsure, say "Y" 110 111config NR_CPUS 112 int "Maximum number of CPUs" if SMP 113 range 2 6 if SMP 114 default "1" if !SMP 115 default "6" if SMP 116 help 117 This allows you to specify the maximum number of CPUs which this 118 kernel will support. The maximum supported value is 6 and the 119 minimum value which makes sense is 2. 120 121 This is purely to save memory - each supported CPU adds 122 approximately eight kilobytes to the kernel image. 123 124choice 125 prompt "Kernel page size" 126 default PAGE_SIZE_4KB 127 help 128 Changes the default page size; use with caution. 129 130config PAGE_SIZE_4KB 131 bool "4KB" 132 133config PAGE_SIZE_16KB 134 bool "16KB" 135 136config PAGE_SIZE_64KB 137 bool "64KB" 138 139config PAGE_SIZE_256KB 140 bool "256KB" 141 142endchoice 143 144source "kernel/Kconfig.hz" 145 146endmenu 147