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Commit | Line | Data |
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1da177e4 LT |
1 | menu "Kernel hacking" |
2 | ||
afbfb52e | 3 | config TRACE_IRQFLAGS_SUPPORT |
d7ef4fb3 | 4 | def_bool y |
afbfb52e | 5 | |
1da177e4 LT |
6 | source "lib/Kconfig.debug" |
7 | ||
8 | config SH_STANDARD_BIOS | |
9 | bool "Use LinuxSH standard BIOS" | |
1a013e2f | 10 | depends on SUPERH32 |
1da177e4 LT |
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 | 32 | depends on EARLY_SCIF_CONSOLE |
2a8ff459 | 33 | default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705 |
31a49c4b | 34 | default "0xa4430000" if CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721 |
2ad69908 PM |
35 | default "0xf8420000" if CPU_SUBTYPE_SH7619 |
36 | default "0xff804000" if CPU_SUBTYPE_MXG | |
8d797cd1 | 37 | default "0xffc30000" if CPU_SUBTYPE_SHX3 |
2ad69908 PM |
38 | default "0xffe00000" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7763 || \ |
39 | CPU_SUBTYPE_SH7722 || CPU_SUBTYPE_SH7366 | |
6fc21b82 | 40 | default "0xffe80000" if CPU_SH4 |
2ad69908 PM |
41 | default "0xffea0000" if CPU_SUBTYPE_SH7785 |
42 | default "0xfffe8000" if CPU_SUBTYPE_SH7203 | |
43 | default "0xfffe9800" if CPU_SUBTYPE_SH7206 || CPU_SUBTYPE_SH7263 | |
8d797cd1 | 44 | default "0x00000000" |
1da177e4 LT |
45 | |
46 | config EARLY_PRINTK | |
47 | bool "Early printk support" | |
48 | depends on SH_STANDARD_BIOS || EARLY_SCIF_CONSOLE | |
49 | help | |
50 | Say Y here to redirect kernel printk messages to the serial port | |
51 | used by the SH-IPL bootloader, starting very early in the boot | |
52 | process and ending when the kernel's serial console is initialised. | |
53 | This option is only useful porting the kernel to a new machine, | |
54 | when the kernel may crash or hang before the serial console is | |
55 | initialised. If unsure, say N. | |
56 | ||
6fc21b82 PM |
57 | On devices that are running SH-IPL and want to keep the port |
58 | initialization consistent while not using the BIOS callbacks, | |
59 | select both the EARLY_SCIF_CONSOLE and SH_STANDARD_BIOS, using | |
60 | the kernel command line option to toggle back and forth. | |
61 | ||
91e656aa PM |
62 | config DEBUG_BOOTMEM |
63 | depends on DEBUG_KERNEL | |
64 | bool "Debug BOOTMEM initialization" | |
65 | ||
d153ea88 PM |
66 | config DEBUG_STACKOVERFLOW |
67 | bool "Check for stack overflows" | |
5db141a9 | 68 | depends on DEBUG_KERNEL && SUPERH32 |
d153ea88 PM |
69 | help |
70 | This option will cause messages to be printed if free stack space | |
71 | drops below a certain limit. | |
72 | ||
73 | config DEBUG_STACK_USAGE | |
74 | bool "Stack utilization instrumentation" | |
75 | depends on DEBUG_KERNEL | |
76 | help | |
77 | Enables the display of the minimum amount of free stack which each | |
78 | task has ever had available in the sysrq-T and sysrq-P debug output. | |
79 | ||
80 | This option will slow down process creation somewhat. | |
81 | ||
a6a31139 PM |
82 | config 4KSTACKS |
83 | bool "Use 4Kb for kernel stacks instead of 8Kb" | |
1f8404ea | 84 | depends on DEBUG_KERNEL && (MMU || BROKEN) |
a6a31139 PM |
85 | help |
86 | If you say Y here the kernel will use a 4Kb stacksize for the | |
87 | kernel stack attached to each process/thread. This facilitates | |
88 | running more threads on a system and also reduces the pressure | |
89 | on the VM subsystem for higher order allocations. This option | |
90 | will also use IRQ stacks to compensate for the reduced stackspace. | |
91 | ||
110ed282 PM |
92 | config IRQSTACKS |
93 | bool "Use separate kernel stacks when processing interrupts" | |
5db141a9 | 94 | depends on DEBUG_KERNEL && SUPERH32 |
110ed282 PM |
95 | help |
96 | If you say Y here the kernel will use separate kernel stacks | |
97 | for handling hard and soft interrupts. This can help avoid | |
98 | overflowing the process kernel stacks. | |
99 | ||
fa5da2f7 | 100 | config SH_KGDB |
1da177e4 | 101 | bool "Include KGDB kernel debugger" |
2549b322 | 102 | select FRAME_POINTER |
fa5da2f7 | 103 | select DEBUG_INFO |
357d5946 | 104 | depends on CPU_SH3 || CPU_SH4 |
1da177e4 LT |
105 | help |
106 | Include in-kernel hooks for kgdb, the Linux kernel source level | |
107 | debugger. See <http://kgdb.sourceforge.net/> for more information. | |
108 | Unless you are intending to debug the kernel, say N here. | |
109 | ||
110 | menu "KGDB configuration options" | |
fa5da2f7 | 111 | depends on SH_KGDB |
1da177e4 LT |
112 | |
113 | config MORE_COMPILE_OPTIONS | |
114 | bool "Add any additional compile options" | |
115 | help | |
116 | If you want to add additional CFLAGS to the kernel build, enable this | |
117 | option and then enter what you would like to add in the next question. | |
118 | Note however that -g is already appended with the selection of KGDB. | |
119 | ||
120 | config COMPILE_OPTIONS | |
121 | string "Additional compile arguments" | |
122 | depends on MORE_COMPILE_OPTIONS | |
123 | ||
124 | config KGDB_NMI | |
d7ef4fb3 HH |
125 | def_bool n |
126 | prompt "Enter KGDB on NMI" | |
1da177e4 | 127 | |
1da177e4 | 128 | config SH_KGDB_CONSOLE |
d7ef4fb3 HH |
129 | def_bool n |
130 | prompt "Console messages through GDB" | |
808bde25 | 131 | depends on !SERIAL_SH_SCI_CONSOLE && SERIAL_SH_SCI=y |
fa5da2f7 | 132 | select SERIAL_CORE_CONSOLE |
1da177e4 LT |
133 | |
134 | config KGDB_SYSRQ | |
d7ef4fb3 HH |
135 | def_bool y |
136 | prompt "Allow SysRq 'G' to enter KGDB" | |
0acc729e | 137 | depends on MAGIC_SYSRQ |
1da177e4 | 138 | |
1da177e4 LT |
139 | comment "Serial port setup" |
140 | ||
141 | config KGDB_DEFPORT | |
142 | int "Port number (ttySCn)" | |
143 | default "1" | |
144 | ||
145 | config KGDB_DEFBAUD | |
146 | int "Baud rate" | |
147 | default "115200" | |
148 | ||
149 | choice | |
150 | prompt "Parity" | |
fa5da2f7 | 151 | depends on SH_KGDB |
1da177e4 LT |
152 | default KGDB_DEFPARITY_N |
153 | ||
154 | config KGDB_DEFPARITY_N | |
155 | bool "None" | |
156 | ||
157 | config KGDB_DEFPARITY_E | |
158 | bool "Even" | |
159 | ||
160 | config KGDB_DEFPARITY_O | |
161 | bool "Odd" | |
162 | ||
163 | endchoice | |
164 | ||
165 | choice | |
166 | prompt "Data bits" | |
fa5da2f7 | 167 | depends on SH_KGDB |
1da177e4 LT |
168 | default KGDB_DEFBITS_8 |
169 | ||
170 | config KGDB_DEFBITS_8 | |
171 | bool "8" | |
172 | ||
173 | config KGDB_DEFBITS_7 | |
174 | bool "7" | |
175 | ||
176 | endchoice | |
177 | ||
178 | endmenu | |
179 | ||
8214d52a PM |
180 | if SUPERH64 |
181 | ||
182 | config SH64_PROC_ASIDS | |
183 | bool "Debug: report ASIDs through /proc/asids" | |
184 | depends on PROC_FS | |
185 | ||
186 | config SH64_SR_WATCH | |
187 | bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" | |
188 | ||
189 | config POOR_MANS_STRACE | |
190 | bool "Debug: enable rudimentary strace facility" | |
191 | help | |
192 | This option allows system calls to be traced to the console. It also | |
193 | aids in detecting kernel stack underflow. It is useful for debugging | |
194 | early-userland problems (e.g. init incurring fatal exceptions.) | |
195 | ||
196 | config SH_ALPHANUMERIC | |
197 | bool "Enable debug outputs to on-board alphanumeric display" | |
198 | depends on SH_CAYMAN | |
199 | ||
200 | config SH_NO_BSS_INIT | |
201 | bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)" | |
202 | ||
203 | endif | |
204 | ||
1da177e4 | 205 | endmenu |