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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 help
35 Qualcomm Hexagon is a processor architecture designed for high
36 performance and low power across a wide variety of applications.
37
38config HEXAGON_PHYS_OFFSET
39 def_bool y
40 help
41 Platforms that don't load the kernel at zero set this.
42
43config FRAME_POINTER
44 def_bool y
45
46config LOCKDEP_SUPPORT
47 def_bool y
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 GENERIC_HWEIGHT
68 def_bool y
69
70config STACKTRACE_SUPPORT
71 def_bool y
72 select STACKTRACE
73
74config GENERIC_BUG
75 def_bool y
76 depends on BUG
77
78menu "Machine selection"
79
80choice
81 prompt "System type"
82 default HEXAGON_COMET
83
84config HEXAGON_COMET
85 bool "Comet Board"
86 help
87 Support for the Comet platform.
88
89endchoice
90
91config HEXAGON_ARCH_VERSION
92 int "Architecture version"
93 default 2
94
95config CMDLINE
96 string "Default kernel command string"
97 default ""
98 help
99 On some platforms, there is currently no way for the boot loader
100 to pass arguments to the kernel. For these, you should supply some
101 command-line options at build time by entering them here. At a
102 minimum, you should specify the memory size and the root device
103 (e.g., mem=64M root=/dev/nfs).
104
105config SMP
106 bool "Multi-Processing support"
107 help
108 Enables SMP support in the kernel. If unsure, say "Y"
109
110config NR_CPUS
111 int "Maximum number of CPUs" if SMP
112 range 2 6 if SMP
113 default "1" if !SMP
114 default "6" if SMP
115 help
116 This allows you to specify the maximum number of CPUs which this
117 kernel will support. The maximum supported value is 6 and the
118 minimum value which makes sense is 2.
119
120 This is purely to save memory - each supported CPU adds
121 approximately eight kilobytes to the kernel image.
122
123choice
124 prompt "Kernel page size"
125 default PAGE_SIZE_4KB
126 help
127 Changes the default page size; use with caution.
128
129config PAGE_SIZE_4KB
130 bool "4KB"
131
132config PAGE_SIZE_16KB
133 bool "16KB"
134
135config PAGE_SIZE_64KB
136 bool "64KB"
137
138config PAGE_SIZE_256KB
139 bool "256KB"
140
141endchoice
142
143source "kernel/Kconfig.hz"
144
145endmenu
1# Hexagon configuration
2comment "Linux Kernel Configuration for Hexagon"
3
4config HEXAGON
5 def_bool y
6 select HAVE_OPROFILE
7 # Other pending projects/to-do items.
8 # select HAVE_REGS_AND_STACK_ACCESS_API
9 # select HAVE_HW_BREAKPOINT if PERF_EVENTS
10 # select ARCH_HAS_CPU_IDLE_WAIT
11 # select ARCH_WANT_OPTIONAL_GPIOLIB
12 # select ARCH_REQUIRE_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 NO_IOPORT_MAP
23 select GENERIC_IOMAP
24 select GENERIC_SMP_IDLE_THREAD
25 select STACKTRACE_SUPPORT
26 select GENERIC_CLOCKEVENTS
27 select GENERIC_CLOCKEVENTS_BROADCAST
28 select MODULES_USE_ELF_RELA
29 select GENERIC_CPU_DEVICES
30 ---help---
31 Qualcomm Hexagon is a processor architecture designed for high
32 performance and low power across a wide variety of applications.
33
34config HEXAGON_PHYS_OFFSET
35 def_bool y
36 ---help---
37 Platforms that don't load the kernel at zero set this.
38
39config FRAME_POINTER
40 def_bool y
41
42config LOCKDEP_SUPPORT
43 def_bool y
44
45config PCI
46 def_bool n
47
48config EARLY_PRINTK
49 def_bool y
50
51config MMU
52 def_bool y
53
54config TRACE_IRQFLAGS_SUPPORT
55 def_bool y
56
57config GENERIC_CSUM
58 def_bool y
59
60#
61# Use the generic interrupt handling code in kernel/irq/:
62#
63config GENERIC_IRQ_PROBE
64 def_bool y
65
66config NEED_SG_DMA_LENGTH
67 def_bool y
68
69config RWSEM_GENERIC_SPINLOCK
70 def_bool n
71
72config RWSEM_XCHGADD_ALGORITHM
73 def_bool y
74
75config GENERIC_HWEIGHT
76 def_bool y
77
78config STACKTRACE_SUPPORT
79 def_bool y
80 select STACKTRACE
81
82config GENERIC_BUG
83 def_bool y
84 depends on BUG
85
86menu "Machine selection"
87
88choice
89 prompt "System type"
90 default HEXAGON_COMET
91
92config HEXAGON_COMET
93 bool "Comet Board"
94 ---help---
95 Support for the Comet platform.
96
97endchoice
98
99config HEXAGON_ARCH_VERSION
100 int "Architecture version"
101 default 2
102
103config CMDLINE
104 string "Default kernel command string"
105 default ""
106 help
107 On some platforms, there is currently no way for the boot loader
108 to pass arguments to the kernel. For these, you should supply some
109 command-line options at build time by entering them here. At a
110 minimum, you should specify the memory size and the root device
111 (e.g., mem=64M root=/dev/nfs).
112
113config SMP
114 bool "Multi-Processing support"
115 ---help---
116 Enables SMP support in the kernel. If unsure, say "Y"
117
118config NR_CPUS
119 int "Maximum number of CPUs" if SMP
120 range 2 6 if SMP
121 default "1" if !SMP
122 default "6" if SMP
123 ---help---
124 This allows you to specify the maximum number of CPUs which this
125 kernel will support. The maximum supported value is 6 and the
126 minimum value which makes sense is 2.
127
128 This is purely to save memory - each supported CPU adds
129 approximately eight kilobytes to the kernel image.
130
131choice
132 prompt "Kernel page size"
133 default PAGE_SIZE_4KB
134 ---help---
135 Changes the default page size; use with caution.
136
137config PAGE_SIZE_4KB
138 bool "4KB"
139
140config PAGE_SIZE_16KB
141 bool "16KB"
142
143config PAGE_SIZE_64KB
144 bool "64KB"
145
146config PAGE_SIZE_256KB
147 bool "256KB"
148
149endchoice
150
151source "mm/Kconfig"
152
153source "kernel/Kconfig.hz"
154
155endmenu
156
157source "init/Kconfig"
158source "kernel/Kconfig.freezer"
159source "drivers/Kconfig"
160source "fs/Kconfig"
161
162menu "Executable File Formats"
163source "fs/Kconfig.binfmt"
164endmenu
165
166source "net/Kconfig"
167source "security/Kconfig"
168source "crypto/Kconfig"
169source "lib/Kconfig"
170
171menu "Kernel hacking"
172source "lib/Kconfig.debug"
173endmenu