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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" | |
6fc21b82 PM |
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 | |
9465a54f | 36 | default "0xa4400000" if CPU_SUBTYPE_SH7712 |
6fc21b82 | 37 | default "0xffe80000" if CPU_SH4 |
1da177e4 LT |
38 | |
39 | config EARLY_PRINTK | |
40 | bool "Early printk support" | |
41 | depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE | |
42 | help | |
43 | Say Y here to redirect kernel printk messages to the serial port | |
44 | used by the SH-IPL bootloader, starting very early in the boot | |
45 | process and ending when the kernel's serial console is initialised. | |
46 | This option is only useful porting the kernel to a new machine, | |
47 | when the kernel may crash or hang before the serial console is | |
48 | initialised. If unsure, say N. | |
49 | ||
6fc21b82 PM |
50 | On devices that are running SH-IPL and want to keep the port |
51 | initialization consistent while not using the BIOS callbacks, | |
52 | select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using | |
53 | the kernel command line option to toggle back and forth. | |
54 | ||
d153ea88 PM |
55 | config DEBUG_STACKOVERFLOW |
56 | bool "Check for stack overflows" | |
57 | depends on DEBUG_KERNEL | |
58 | help | |
59 | This option will cause messages to be printed if free stack space | |
60 | drops below a certain limit. | |
61 | ||
62 | config DEBUG_STACK_USAGE | |
63 | bool "Stack utilization instrumentation" | |
64 | depends on DEBUG_KERNEL | |
65 | help | |
66 | Enables the display of the minimum amount of free stack which each | |
67 | task has ever had available in the sysrq-T and sysrq-P debug output. | |
68 | ||
69 | This option will slow down process creation somewhat. | |
70 | ||
a6a31139 PM |
71 | config 4KSTACKS |
72 | bool "Use 4Kb for kernel stacks instead of 8Kb" | |
73 | depends on DEBUG_KERNEL | |
74 | help | |
75 | If you say Y here the kernel will use a 4Kb stacksize for the | |
76 | kernel stack attached to each process/thread. This facilitates | |
77 | running more threads on a system and also reduces the pressure | |
78 | on the VM subsystem for higher order allocations. This option | |
79 | will also use IRQ stacks to compensate for the reduced stackspace. | |
80 | ||
fa5da2f7 | 81 | config SH_KGDB |
1da177e4 | 82 | bool "Include KGDB kernel debugger" |
2549b322 | 83 | select FRAME_POINTER |
fa5da2f7 | 84 | select DEBUG_INFO |
1da177e4 LT |
85 | help |
86 | Include in-kernel hooks for kgdb, the Linux kernel source level | |
87 | debugger. See <http://kgdb.sourceforge.net/> for more information. | |
88 | Unless you are intending to debug the kernel, say N here. | |
89 | ||
90 | menu "KGDB configuration options" | |
fa5da2f7 | 91 | depends on SH_KGDB |
1da177e4 LT |
92 | |
93 | config MORE_COMPILE_OPTIONS | |
94 | bool "Add any additional compile options" | |
95 | help | |
96 | If you want to add additional CFLAGS to the kernel build, enable this | |
97 | option and then enter what you would like to add in the next question. | |
98 | Note however that -g is already appended with the selection of KGDB. | |
99 | ||
100 | config COMPILE_OPTIONS | |
101 | string "Additional compile arguments" | |
102 | depends on MORE_COMPILE_OPTIONS | |
103 | ||
104 | config KGDB_NMI | |
105 | bool "Enter KGDB on NMI" | |
106 | default n | |
107 | ||
1da177e4 LT |
108 | config SH_KGDB_CONSOLE |
109 | bool "Console messages through GDB" | |
fa5da2f7 PM |
110 | depends on !SERIAL_SH_SCI_CONSOLE |
111 | select SERIAL_CORE_CONSOLE | |
1da177e4 LT |
112 | default n |
113 | ||
114 | config KGDB_SYSRQ | |
115 | bool "Allow SysRq 'G' to enter KGDB" | |
116 | default y | |
117 | ||
1da177e4 LT |
118 | comment "Serial port setup" |
119 | ||
120 | config KGDB_DEFPORT | |
121 | int "Port number (ttySCn)" | |
122 | default "1" | |
123 | ||
124 | config KGDB_DEFBAUD | |
125 | int "Baud rate" | |
126 | default "115200" | |
127 | ||
128 | choice | |
129 | prompt "Parity" | |
fa5da2f7 | 130 | depends on SH_KGDB |
1da177e4 LT |
131 | default KGDB_DEFPARITY_N |
132 | ||
133 | config KGDB_DEFPARITY_N | |
134 | bool "None" | |
135 | ||
136 | config KGDB_DEFPARITY_E | |
137 | bool "Even" | |
138 | ||
139 | config KGDB_DEFPARITY_O | |
140 | bool "Odd" | |
141 | ||
142 | endchoice | |
143 | ||
144 | choice | |
145 | prompt "Data bits" | |
fa5da2f7 | 146 | depends on SH_KGDB |
1da177e4 LT |
147 | default KGDB_DEFBITS_8 |
148 | ||
149 | config KGDB_DEFBITS_8 | |
150 | bool "8" | |
151 | ||
152 | config KGDB_DEFBITS_7 | |
153 | bool "7" | |
154 | ||
155 | endchoice | |
156 | ||
157 | endmenu | |
158 | ||
1da177e4 | 159 | endmenu |