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1da177e4 LT |
1 | menu "Kernel hacking" |
2 | ||
afbfb52e PM |
3 | config TRACE_IRQFLAGS_SUPPORT |
4 | bool | |
5 | default y | |
6 | ||
1da177e4 LT |
7 | source "lib/Kconfig.debug" |
8 | ||
9 | config SH_STANDARD_BIOS | |
10 | bool "Use LinuxSH standard BIOS" | |
11 | help | |
12 | Say Y here if your target has the gdb-sh-stub | |
13 | package from www.m17n.org (or any conforming standard LinuxSH BIOS) | |
14 | in FLASH or EPROM. The kernel will use standard BIOS calls during | |
15 | boot for various housekeeping tasks (including calls to read and | |
16 | write characters to a system console, get a MAC address from an | |
17 | on-board Ethernet interface, and shut down the hardware). Note this | |
18 | does not work with machines with an existing operating system in | |
19 | mask ROM and no flash (WindowsCE machines fall in this category). | |
20 | If unsure, say N. | |
21 | ||
22 | config EARLY_SCIF_CONSOLE | |
23 | bool "Use early SCIF console" | |
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24 | help |
25 | This enables an early console using a fixed SCIF port. This can | |
26 | be used by platforms that are either not running the SH | |
27 | standard BIOS, or do not wish to use the BIOS callbacks for the | |
28 | serial I/O. | |
29 | ||
30 | config EARLY_SCIF_CONSOLE_PORT | |
31 | hex "SCIF port for early console" | |
32 | depends on EARLY_SCIF_CONSOLE | |
33 | default "0xffe00000" if CPU_SUBTYPE_SH7780 | |
11cbb70e YS |
34 | default "0xfffe9800" if CPU_SUBTYPE_SH7206 |
35 | default "0xf8420000" if CPU_SUBTYPE_SH7619 | |
6fc21b82 | 36 | default "0xffe80000" if CPU_SH4 |
1da177e4 LT |
37 | |
38 | config EARLY_PRINTK | |
39 | bool "Early printk support" | |
40 | depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE | |
41 | help | |
42 | Say Y here to redirect kernel printk messages to the serial port | |
43 | used by the SH-IPL bootloader, starting very early in the boot | |
44 | process and ending when the kernel's serial console is initialised. | |
45 | This option is only useful porting the kernel to a new machine, | |
46 | when the kernel may crash or hang before the serial console is | |
47 | initialised. If unsure, say N. | |
48 | ||
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49 | On devices that are running SH-IPL and want to keep the port |
50 | initialization consistent while not using the BIOS callbacks, | |
51 | select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using | |
52 | the kernel command line option to toggle back and forth. | |
53 | ||
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54 | config DEBUG_STACKOVERFLOW |
55 | bool "Check for stack overflows" | |
56 | depends on DEBUG_KERNEL | |
57 | help | |
58 | This option will cause messages to be printed if free stack space | |
59 | drops below a certain limit. | |
60 | ||
61 | config DEBUG_STACK_USAGE | |
62 | bool "Stack utilization instrumentation" | |
63 | depends on DEBUG_KERNEL | |
64 | help | |
65 | Enables the display of the minimum amount of free stack which each | |
66 | task has ever had available in the sysrq-T and sysrq-P debug output. | |
67 | ||
68 | This option will slow down process creation somewhat. | |
69 | ||
a6a31139 PM |
70 | config 4KSTACKS |
71 | bool "Use 4Kb for kernel stacks instead of 8Kb" | |
72 | depends on DEBUG_KERNEL | |
73 | help | |
74 | If you say Y here the kernel will use a 4Kb stacksize for the | |
75 | kernel stack attached to each process/thread. This facilitates | |
76 | running more threads on a system and also reduces the pressure | |
77 | on the VM subsystem for higher order allocations. This option | |
78 | will also use IRQ stacks to compensate for the reduced stackspace. | |
79 | ||
1da177e4 LT |
80 | config KGDB |
81 | bool "Include KGDB kernel debugger" | |
2549b322 | 82 | select FRAME_POINTER |
1da177e4 LT |
83 | help |
84 | Include in-kernel hooks for kgdb, the Linux kernel source level | |
85 | debugger. See <http://kgdb.sourceforge.net/> for more information. | |
86 | Unless you are intending to debug the kernel, say N here. | |
87 | ||
88 | menu "KGDB configuration options" | |
89 | depends on KGDB | |
90 | ||
91 | config MORE_COMPILE_OPTIONS | |
92 | bool "Add any additional compile options" | |
93 | help | |
94 | If you want to add additional CFLAGS to the kernel build, enable this | |
95 | option and then enter what you would like to add in the next question. | |
96 | Note however that -g is already appended with the selection of KGDB. | |
97 | ||
98 | config COMPILE_OPTIONS | |
99 | string "Additional compile arguments" | |
100 | depends on MORE_COMPILE_OPTIONS | |
101 | ||
102 | config KGDB_NMI | |
103 | bool "Enter KGDB on NMI" | |
104 | default n | |
105 | ||
106 | config KGDB_THREAD | |
107 | bool "Include KGDB thread support" | |
108 | default y | |
109 | ||
110 | config SH_KGDB_CONSOLE | |
111 | bool "Console messages through GDB" | |
112 | default n | |
113 | ||
114 | config KGDB_SYSRQ | |
115 | bool "Allow SysRq 'G' to enter KGDB" | |
116 | default y | |
117 | ||
118 | config KGDB_KERNEL_ASSERTS | |
119 | bool "Include KGDB kernel assertions" | |
120 | default n | |
121 | ||
122 | comment "Serial port setup" | |
123 | ||
124 | config KGDB_DEFPORT | |
125 | int "Port number (ttySCn)" | |
126 | default "1" | |
127 | ||
128 | config KGDB_DEFBAUD | |
129 | int "Baud rate" | |
130 | default "115200" | |
131 | ||
132 | choice | |
133 | prompt "Parity" | |
134 | depends on KGDB | |
135 | default KGDB_DEFPARITY_N | |
136 | ||
137 | config KGDB_DEFPARITY_N | |
138 | bool "None" | |
139 | ||
140 | config KGDB_DEFPARITY_E | |
141 | bool "Even" | |
142 | ||
143 | config KGDB_DEFPARITY_O | |
144 | bool "Odd" | |
145 | ||
146 | endchoice | |
147 | ||
148 | choice | |
149 | prompt "Data bits" | |
150 | depends on KGDB | |
151 | default KGDB_DEFBITS_8 | |
152 | ||
153 | config KGDB_DEFBITS_8 | |
154 | bool "8" | |
155 | ||
156 | config KGDB_DEFBITS_7 | |
157 | bool "7" | |
158 | ||
159 | endchoice | |
160 | ||
161 | endmenu | |
162 | ||
1da177e4 | 163 | endmenu |