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 HAVE_OPROFILE 8 # Other pending projects/to-do items. 9 # select HAVE_REGS_AND_STACK_ACCESS_API 10 # select HAVE_HW_BREAKPOINT if PERF_EVENTS 11 # select ARCH_HAS_CPU_IDLE_WAIT 12 # select GPIOLIB 13 # select HAVE_CLK 14 # select GENERIC_PENDING_IRQ if SMP 15 select GENERIC_ATOMIC64 16 select HAVE_PERF_EVENTS 17 # GENERIC_ALLOCATOR is used by dma_alloc_coherent() 18 select GENERIC_ALLOCATOR 19 select GENERIC_IRQ_SHOW 20 select HAVE_ARCH_KGDB 21 select HAVE_ARCH_TRACEHOOK 22 select NEED_SG_DMA_LENGTH 23 select NO_IOPORT_MAP 24 select GENERIC_IOMAP 25 select GENERIC_SMP_IDLE_THREAD 26 select STACKTRACE_SUPPORT 27 select GENERIC_CLOCKEVENTS 28 select GENERIC_CLOCKEVENTS_BROADCAST 29 select MODULES_USE_ELF_RELA 30 select GENERIC_CPU_DEVICES 31 ---help--- 32 Qualcomm Hexagon is a processor architecture designed for high 33 performance and low power across a wide variety of applications. 34 35config HEXAGON_PHYS_OFFSET 36 def_bool y 37 ---help--- 38 Platforms that don't load the kernel at zero set this. 39 40config FRAME_POINTER 41 def_bool y 42 43config LOCKDEP_SUPPORT 44 def_bool y 45 46config PCI 47 def_bool n 48 49config EARLY_PRINTK 50 def_bool y 51 52config MMU 53 def_bool y 54 55config TRACE_IRQFLAGS_SUPPORT 56 def_bool y 57 58config GENERIC_CSUM 59 def_bool y 60 61# 62# Use the generic interrupt handling code in kernel/irq/: 63# 64config GENERIC_IRQ_PROBE 65 def_bool y 66 67config RWSEM_GENERIC_SPINLOCK 68 def_bool n 69 70config RWSEM_XCHGADD_ALGORITHM 71 def_bool y 72 73config GENERIC_HWEIGHT 74 def_bool y 75 76config STACKTRACE_SUPPORT 77 def_bool y 78 select STACKTRACE 79 80config GENERIC_BUG 81 def_bool y 82 depends on BUG 83 84menu "Machine selection" 85 86choice 87 prompt "System type" 88 default HEXAGON_COMET 89 90config HEXAGON_COMET 91 bool "Comet Board" 92 ---help--- 93 Support for the Comet platform. 94 95endchoice 96 97config HEXAGON_ARCH_VERSION 98 int "Architecture version" 99 default 2 100 101config CMDLINE 102 string "Default kernel command string" 103 default "" 104 help 105 On some platforms, there is currently no way for the boot loader 106 to pass arguments to the kernel. For these, you should supply some 107 command-line options at build time by entering them here. At a 108 minimum, you should specify the memory size and the root device 109 (e.g., mem=64M root=/dev/nfs). 110 111config SMP 112 bool "Multi-Processing support" 113 ---help--- 114 Enables SMP support in the kernel. If unsure, say "Y" 115 116config NR_CPUS 117 int "Maximum number of CPUs" if SMP 118 range 2 6 if SMP 119 default "1" if !SMP 120 default "6" if SMP 121 ---help--- 122 This allows you to specify the maximum number of CPUs which this 123 kernel will support. The maximum supported value is 6 and the 124 minimum value which makes sense is 2. 125 126 This is purely to save memory - each supported CPU adds 127 approximately eight kilobytes to the kernel image. 128 129choice 130 prompt "Kernel page size" 131 default PAGE_SIZE_4KB 132 ---help--- 133 Changes the default page size; use with caution. 134 135config PAGE_SIZE_4KB 136 bool "4KB" 137 138config PAGE_SIZE_16KB 139 bool "16KB" 140 141config PAGE_SIZE_64KB 142 bool "64KB" 143 144config PAGE_SIZE_256KB 145 bool "256KB" 146 147endchoice 148 149source "mm/Kconfig" 150 151source "kernel/Kconfig.hz" 152 153endmenu 154 155source "init/Kconfig" 156source "kernel/Kconfig.freezer" 157source "drivers/Kconfig" 158source "fs/Kconfig" 159 160menu "Executable File Formats" 161source "fs/Kconfig.binfmt" 162endmenu 163 164source "net/Kconfig" 165source "security/Kconfig" 166source "crypto/Kconfig" 167source "lib/Kconfig" 168 169menu "Kernel hacking" 170source "lib/Kconfig.debug" 171endmenu 172