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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 | |
8d797cd1 | 31 | hex |
6fc21b82 PM |
32 | depends on EARLY_SCIF_CONSOLE |
33 | default "0xffe00000" if CPU_SUBTYPE_SH7780 | |
5cbc3af5 | 34 | default "0xffea0000" if CPU_SUBTYPE_SH7785 |
11cbb70e YS |
35 | default "0xfffe9800" if CPU_SUBTYPE_SH7206 |
36 | default "0xf8420000" if CPU_SUBTYPE_SH7619 | |
2a8ff459 | 37 | default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705 |
3ea6bc3d | 38 | default "0xa4430000" if CPU_SUBTYPE_SH7720 |
8d797cd1 | 39 | default "0xffc30000" if CPU_SUBTYPE_SHX3 |
6fc21b82 | 40 | default "0xffe80000" if CPU_SH4 |
8d797cd1 | 41 | default "0x00000000" |
1da177e4 LT |
42 | |
43 | config EARLY_PRINTK | |
44 | bool "Early printk support" | |
45 | depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE | |
46 | help | |
47 | Say Y here to redirect kernel printk messages to the serial port | |
48 | used by the SH-IPL bootloader, starting very early in the boot | |
49 | process and ending when the kernel's serial console is initialised. | |
50 | This option is only useful porting the kernel to a new machine, | |
51 | when the kernel may crash or hang before the serial console is | |
52 | initialised. If unsure, say N. | |
53 | ||
6fc21b82 PM |
54 | On devices that are running SH-IPL and want to keep the port |
55 | initialization consistent while not using the BIOS callbacks, | |
56 | select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using | |
57 | the kernel command line option to toggle back and forth. | |
58 | ||
91e656aa PM |
59 | config DEBUG_BOOTMEM |
60 | depends on DEBUG_KERNEL | |
61 | bool "Debug BOOTMEM initialization" | |
62 | ||
d153ea88 PM |
63 | config DEBUG_STACKOVERFLOW |
64 | bool "Check for stack overflows" | |
65 | depends on DEBUG_KERNEL | |
66 | help | |
67 | This option will cause messages to be printed if free stack space | |
68 | drops below a certain limit. | |
69 | ||
70 | config DEBUG_STACK_USAGE | |
71 | bool "Stack utilization instrumentation" | |
72 | depends on DEBUG_KERNEL | |
73 | help | |
74 | Enables the display of the minimum amount of free stack which each | |
75 | task has ever had available in the sysrq-T and sysrq-P debug output. | |
76 | ||
77 | This option will slow down process creation somewhat. | |
78 | ||
a6a31139 PM |
79 | config 4KSTACKS |
80 | bool "Use 4Kb for kernel stacks instead of 8Kb" | |
81 | depends on DEBUG_KERNEL | |
82 | help | |
83 | If you say Y here the kernel will use a 4Kb stacksize for the | |
84 | kernel stack attached to each process/thread. This facilitates | |
85 | running more threads on a system and also reduces the pressure | |
86 | on the VM subsystem for higher order allocations. This option | |
87 | will also use IRQ stacks to compensate for the reduced stackspace. | |
88 | ||
110ed282 PM |
89 | config IRQSTACKS |
90 | bool "Use separate kernel stacks when processing interrupts" | |
91 | depends on DEBUG_KERNEL | |
92 | help | |
93 | If you say Y here the kernel will use separate kernel stacks | |
94 | for handling hard and soft interrupts. This can help avoid | |
95 | overflowing the process kernel stacks. | |
96 | ||
fa5da2f7 | 97 | config SH_KGDB |
1da177e4 | 98 | bool "Include KGDB kernel debugger" |
2549b322 | 99 | select FRAME_POINTER |
fa5da2f7 | 100 | select DEBUG_INFO |
357d5946 | 101 | depends on CPU_SH3 || CPU_SH4 |
1da177e4 LT |
102 | help |
103 | Include in-kernel hooks for kgdb, the Linux kernel source level | |
104 | debugger. See <http://kgdb.sourceforge.net/> for more information. | |
105 | Unless you are intending to debug the kernel, say N here. | |
106 | ||
107 | menu "KGDB configuration options" | |
fa5da2f7 | 108 | depends on SH_KGDB |
1da177e4 LT |
109 | |
110 | config MORE_COMPILE_OPTIONS | |
111 | bool "Add any additional compile options" | |
112 | help | |
113 | If you want to add additional CFLAGS to the kernel build, enable this | |
114 | option and then enter what you would like to add in the next question. | |
115 | Note however that -g is already appended with the selection of KGDB. | |
116 | ||
117 | config COMPILE_OPTIONS | |
118 | string "Additional compile arguments" | |
119 | depends on MORE_COMPILE_OPTIONS | |
120 | ||
121 | config KGDB_NMI | |
122 | bool "Enter KGDB on NMI" | |
123 | default n | |
124 | ||
1da177e4 LT |
125 | config SH_KGDB_CONSOLE |
126 | bool "Console messages through GDB" | |
808bde25 | 127 | depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y |
fa5da2f7 | 128 | select SERIAL_CORE_CONSOLE |
1da177e4 LT |
129 | default n |
130 | ||
131 | config KGDB_SYSRQ | |
132 | bool "Allow SysRq 'G' to enter KGDB" | |
0acc729e | 133 | depends on MAGIC_SYSRQ |
1da177e4 LT |
134 | default y |
135 | ||
1da177e4 LT |
136 | comment "Serial port setup" |
137 | ||
138 | config KGDB_DEFPORT | |
139 | int "Port number (ttySCn)" | |
140 | default "1" | |
141 | ||
142 | config KGDB_DEFBAUD | |
143 | int "Baud rate" | |
144 | default "115200" | |
145 | ||
146 | choice | |
147 | prompt "Parity" | |
fa5da2f7 | 148 | depends on SH_KGDB |
1da177e4 LT |
149 | default KGDB_DEFPARITY_N |
150 | ||
151 | config KGDB_DEFPARITY_N | |
152 | bool "None" | |
153 | ||
154 | config KGDB_DEFPARITY_E | |
155 | bool "Even" | |
156 | ||
157 | config KGDB_DEFPARITY_O | |
158 | bool "Odd" | |
159 | ||
160 | endchoice | |
161 | ||
162 | choice | |
163 | prompt "Data bits" | |
fa5da2f7 | 164 | depends on SH_KGDB |
1da177e4 LT |
165 | default KGDB_DEFBITS_8 |
166 | ||
167 | config KGDB_DEFBITS_8 | |
168 | bool "8" | |
169 | ||
170 | config KGDB_DEFBITS_7 | |
171 | bool "7" | |
172 | ||
173 | endchoice | |
174 | ||
175 | endmenu | |
176 | ||
8214d52a PM |
177 | if SUPERH64 |
178 | ||
179 | config SH64_PROC_ASIDS | |
180 | bool "Debug: report ASIDs through /proc/asids" | |
181 | depends on PROC_FS | |
182 | ||
183 | config SH64_SR_WATCH | |
184 | bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" | |
185 | ||
186 | config POOR_MANS_STRACE | |
187 | bool "Debug: enable rudimentary strace facility" | |
188 | help | |
189 | This option allows system calls to be traced to the console. It also | |
190 | aids in detecting kernel stack underflow. It is useful for debugging | |
191 | early-userland problems (e.g. init incurring fatal exceptions.) | |
192 | ||
193 | config SH_ALPHANUMERIC | |
194 | bool "Enable debug outputs to on-board alphanumeric display" | |
195 | depends on SH_CAYMAN | |
196 | ||
197 | config SH_NO_BSS_INIT | |
198 | bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)" | |
199 | ||
200 | endif | |
201 | ||
1da177e4 | 202 | endmenu |