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gerrit-public.fairphone.software / kernel / msm-5.4 / 6fc21b82ef74911887ced1aff8d37ce079bb8b36 / . / arch / sh / Kconfig.debug
blob: dcceec95a2d554362306139163db97b78eb45b08 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1menu "Kernel hacking"
2
3source "lib/Kconfig.debug"
4
5config SH_STANDARD_BIOS
6 bool "Use LinuxSH standard BIOS"
7 help
8 Say Y here if your target has the gdb-sh-stub
9 package from www.m17n.org (or any conforming standard LinuxSH BIOS)
10 in FLASH or EPROM. The kernel will use standard BIOS calls during
11 boot for various housekeeping tasks (including calls to read and
12 write characters to a system console, get a MAC address from an
13 on-board Ethernet interface, and shut down the hardware). Note this
14 does not work with machines with an existing operating system in
15 mask ROM and no flash (WindowsCE machines fall in this category).
16 If unsure, say N.
17
18config EARLY_SCIF_CONSOLE
19 bool "Use early SCIF console"
Paul Mundt6fc21b82006-11-27 12:10:23 +0900[diff] [blame^]20 help
21 This enables an early console using a fixed SCIF port. This can
22 be used by platforms that are either not running the SH
23 standard BIOS, or do not wish to use the BIOS callbacks for the
24 serial I/O.
25
26config EARLY_SCIF_CONSOLE_PORT
27 hex "SCIF port for early console"
28 depends on EARLY_SCIF_CONSOLE
29 default "0xffe00000" if CPU_SUBTYPE_SH7780
30 default "0xfffe9800" if CPU_SUBTYPE_SH72060
31 default "0xffe80000" if CPU_SH4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]32
33config EARLY_PRINTK
34 bool "Early printk support"
35 depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE
36 help
37 Say Y here to redirect kernel printk messages to the serial port
38 used by the SH-IPL bootloader, starting very early in the boot
39 process and ending when the kernel's serial console is initialised.
40 This option is only useful porting the kernel to a new machine,
41 when the kernel may crash or hang before the serial console is
42 initialised. If unsure, say N.
43
Paul Mundt6fc21b82006-11-27 12:10:23 +0900[diff] [blame^]44 On devices that are running SH-IPL and want to keep the port
45 initialization consistent while not using the BIOS callbacks,
46 select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using
47 the kernel command line option to toggle back and forth.
48
Paul Mundtd153ea82006-09-27 18:20:16 +0900[diff] [blame]49config DEBUG_STACKOVERFLOW
50 bool "Check for stack overflows"
51 depends on DEBUG_KERNEL
52 help
53 This option will cause messages to be printed if free stack space
54 drops below a certain limit.
55
56config DEBUG_STACK_USAGE
57 bool "Stack utilization instrumentation"
58 depends on DEBUG_KERNEL
59 help
60 Enables the display of the minimum amount of free stack which each
61 task has ever had available in the sysrq-T and sysrq-P debug output.
62
63 This option will slow down process creation somewhat.
64
Paul Mundta6a311392006-09-27 18:22:14 +0900[diff] [blame]65config 4KSTACKS
66 bool "Use 4Kb for kernel stacks instead of 8Kb"
67 depends on DEBUG_KERNEL
68 help
69 If you say Y here the kernel will use a 4Kb stacksize for the
70 kernel stack attached to each process/thread. This facilitates
71 running more threads on a system and also reduces the pressure
72 on the VM subsystem for higher order allocations. This option
73 will also use IRQ stacks to compensate for the reduced stackspace.
74
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]75config KGDB
76 bool "Include KGDB kernel debugger"
Paul Mundt2549b322006-09-27 16:22:33 +0900[diff] [blame]77 select FRAME_POINTER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]78 help
79 Include in-kernel hooks for kgdb, the Linux kernel source level
80 debugger. See <http://kgdb.sourceforge.net/> for more information.
81 Unless you are intending to debug the kernel, say N here.
82
83menu "KGDB configuration options"
84 depends on KGDB
85
86config MORE_COMPILE_OPTIONS
87 bool "Add any additional compile options"
88 help
89 If you want to add additional CFLAGS to the kernel build, enable this
90 option and then enter what you would like to add in the next question.
91 Note however that -g is already appended with the selection of KGDB.
92
93config COMPILE_OPTIONS
94 string "Additional compile arguments"
95 depends on MORE_COMPILE_OPTIONS
96
97config KGDB_NMI
98 bool "Enter KGDB on NMI"
99 default n
100
101config KGDB_THREAD
102 bool "Include KGDB thread support"
103 default y
104
105config SH_KGDB_CONSOLE
106 bool "Console messages through GDB"
107 default n
108
109config KGDB_SYSRQ
110 bool "Allow SysRq 'G' to enter KGDB"
111 default y
112
113config KGDB_KERNEL_ASSERTS
114 bool "Include KGDB kernel assertions"
115 default n
116
117comment "Serial port setup"
118
119config KGDB_DEFPORT
120 int "Port number (ttySCn)"
121 default "1"
122
123config KGDB_DEFBAUD
124 int "Baud rate"
125 default "115200"
126
127choice
128 prompt "Parity"
129 depends on KGDB
130 default KGDB_DEFPARITY_N
131
132config KGDB_DEFPARITY_N
133 bool "None"
134
135config KGDB_DEFPARITY_E
136 bool "Even"
137
138config KGDB_DEFPARITY_O
139 bool "Odd"
140
141endchoice
142
143choice
144 prompt "Data bits"
145 depends on KGDB
146 default KGDB_DEFBITS_8
147
148config KGDB_DEFBITS_8
149 bool "8"
150
151config KGDB_DEFBITS_7
152 bool "7"
153
154endchoice
155
156endmenu
157
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]158endmenu