1 # SPDX-License-Identifier: GPL-2.0
2
3 config SH_STANDARD_BIOS
4 bool "Use LinuxSH standard BIOS"
5 help
6 Say Y here if your target has the gd
7 package from www.m17n.org (or any co
8 in FLASH or EPROM. The kernel will
9 boot for various housekeeping tasks
10 write characters to a system console
11 on-board Ethernet interface, and shu
12 does not work with machines with an
13 mask ROM and no flash (WindowsCE mac
14 If unsure, say N.
15
16 config STACK_DEBUG
17 bool "Check for stack overflows"
18 depends on DEBUG_KERNEL && PRINTK
19 help
20 This option will cause messages to b
21 drops below a certain limit. Saying
22 every function call and will therefo
23 performance hit. Most users should s
24
25 config EARLY_PRINTK
26 bool "Early printk"
27 depends on SH_STANDARD_BIOS
28 help
29 Say Y here to redirect kernel printk
30 used by the SH-IPL bootloader, start
31 process and ending when the kernel's
32 This option is only useful while por
33 when the kernel may crash or hang be
34 initialised. If unsure, say N.
35
36 config 4KSTACKS
37 bool "Use 4Kb for kernel stacks instea
38 depends on DEBUG_KERNEL && (MMU || BRO
39 help
40 If you say Y here the kernel will us
41 kernel stack attached to each proces
42 running more threads on a system and
43 on the VM subsystem for higher order
44 will also use IRQ stacks to compensa
45
46 config IRQSTACKS
47 bool "Use separate kernel stacks when
48 depends on DEBUG_KERNEL && BROKEN
49 help
50 If you say Y here the kernel will us
51 for handling hard and soft interrupt
52 overflowing the process kernel stack
53
54 config DUMP_CODE
55 bool "Show disassembly of nearby code
56 depends on DEBUG_KERNEL
57 default y if DEBUG_BUGVERBOSE
58 default n
59 help
60 This prints out a code trace of the
61 the faulting instruction as a debugg
62 the kernel in size a bit, most users
63
64 Those looking for more verbose debug
65
66 config DWARF_UNWINDER
67 bool "Enable the DWARF unwinder for st
68 depends on DEBUG_KERNEL
69 select FRAME_POINTER
70 default n
71 help
72 Enabling this option will make stack
73 the cost of an increase in overall k
74
75 config SH_NO_BSS_INIT
76 bool "Avoid zeroing BSS (to speed-up s
77 depends on DEBUG_KERNEL
78 default n
79 help
80 If running in painfully slow environ
81 simulation or from remote memory via
82 can already be guaranteed to ber zer
83
84 For all other cases, say N. If this
85 you aren't sure, say N.
86
87 config MCOUNT
88 def_bool y
89 depends on STACK_DEBUG || FUNCTION_TRA
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