1menu "Kernel hacking"
2
3config TRACE_IRQFLAGS_SUPPORT
4	bool
5	default y
6
7source "lib/Kconfig.debug"
8
9config 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
22config EARLY_SCIF_CONSOLE
23	bool "Use early SCIF console"
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
30config EARLY_SCIF_CONSOLE_PORT
31	hex "SCIF port for early console"
32	depends on EARLY_SCIF_CONSOLE
33	default "0xffe00000" if CPU_SUBTYPE_SH7780
34	default "0xfffe9800" if CPU_SUBTYPE_SH7206
35	default "0xf8420000" if CPU_SUBTYPE_SH7619
36	default "0xa4400000" if CPU_SUBTYPE_SH7712 || CPU_SUBTYPE_SH7705
37	default "0xffe80000" if CPU_SH4
38
39config 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
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
55config 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
62config 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
71config 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
81config SH_KGDB
82	bool "Include KGDB kernel debugger"
83	select FRAME_POINTER
84	select DEBUG_INFO
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
90menu "KGDB configuration options"
91	depends on SH_KGDB
92
93config 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
100config COMPILE_OPTIONS
101	string "Additional compile arguments"
102	depends on MORE_COMPILE_OPTIONS
103
104config KGDB_NMI
105	bool "Enter KGDB on NMI"
106	default n
107
108config SH_KGDB_CONSOLE
109	bool "Console messages through GDB"
110	depends on !SERIAL_SH_SCI_CONSOLE
111	select SERIAL_CORE_CONSOLE
112	default n
113
114config KGDB_SYSRQ
115	bool "Allow SysRq 'G' to enter KGDB"
116	default y
117
118comment "Serial port setup"
119
120config KGDB_DEFPORT
121	int "Port number (ttySCn)"
122	default "1"
123
124config KGDB_DEFBAUD
125	int "Baud rate"
126	default "115200"
127
128choice
129	prompt "Parity"
130	depends on SH_KGDB
131	default KGDB_DEFPARITY_N
132
133config KGDB_DEFPARITY_N
134	bool "None"
135
136config KGDB_DEFPARITY_E
137	bool "Even"
138
139config KGDB_DEFPARITY_O
140	bool "Odd"
141
142endchoice
143
144choice
145	prompt "Data bits"
146	depends on SH_KGDB
147	default KGDB_DEFBITS_8
148
149config KGDB_DEFBITS_8
150	bool "8"
151
152config KGDB_DEFBITS_7
153	bool "7"
154
155endchoice
156
157endmenu
158
159endmenu
160