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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | |
afbfb52e | 3 | config TRACE_IRQFLAGS_SUPPORT |
d7ef4fb3 | 4 | def_bool y |
afbfb52e | 5 | |
1da177e4 LT |
6 | config SH_STANDARD_BIOS |
7 | bool "Use LinuxSH standard BIOS" | |
1a013e2f | 8 | depends on SUPERH32 |
1da177e4 LT |
9 | help |
10 | Say Y here if your target has the gdb-sh-stub | |
11 | package from www.m17n.org (or any conforming standard LinuxSH BIOS) | |
12 | in FLASH or EPROM. The kernel will use standard BIOS calls during | |
13 | boot for various housekeeping tasks (including calls to read and | |
14 | write characters to a system console, get a MAC address from an | |
15 | on-board Ethernet interface, and shut down the hardware). Note this | |
16 | does not work with machines with an existing operating system in | |
17 | mask ROM and no flash (WindowsCE machines fall in this category). | |
18 | If unsure, say N. | |
19 | ||
9f14b84a | 20 | config STACK_DEBUG |
d153ea88 | 21 | bool "Check for stack overflows" |
5db141a9 | 22 | depends on DEBUG_KERNEL && SUPERH32 |
d153ea88 PM |
23 | help |
24 | This option will cause messages to be printed if free stack space | |
9f14b84a PM |
25 | drops below a certain limit. Saying Y here will add overhead to |
26 | every function call and will therefore incur a major | |
27 | performance hit. Most users should say N. | |
d153ea88 | 28 | |
a6a31139 PM |
29 | config 4KSTACKS |
30 | bool "Use 4Kb for kernel stacks instead of 8Kb" | |
b817f7e0 | 31 | depends on DEBUG_KERNEL && (MMU || BROKEN) && !PAGE_SIZE_64KB |
a6a31139 PM |
32 | help |
33 | If you say Y here the kernel will use a 4Kb stacksize for the | |
34 | kernel stack attached to each process/thread. This facilitates | |
35 | running more threads on a system and also reduces the pressure | |
36 | on the VM subsystem for higher order allocations. This option | |
37 | will also use IRQ stacks to compensate for the reduced stackspace. | |
38 | ||
110ed282 PM |
39 | config IRQSTACKS |
40 | bool "Use separate kernel stacks when processing interrupts" | |
40c8bca7 | 41 | depends on DEBUG_KERNEL && SUPERH32 && BROKEN |
110ed282 PM |
42 | help |
43 | If you say Y here the kernel will use separate kernel stacks | |
44 | for handling hard and soft interrupts. This can help avoid | |
45 | overflowing the process kernel stacks. | |
46 | ||
5d2685d0 PM |
47 | config DUMP_CODE |
48 | bool "Show disassembly of nearby code in register dumps" | |
49 | depends on DEBUG_KERNEL && SUPERH32 | |
50 | default y if DEBUG_BUGVERBOSE | |
51 | default n | |
52 | help | |
53 | This prints out a code trace of the instructions leading up to | |
54 | the faulting instruction as a debugging aid. As this does grow | |
55 | the kernel in size a bit, most users will want to say N here. | |
56 | ||
57 | Those looking for more verbose debugging output should say Y. | |
58 | ||
bd353861 MF |
59 | config DWARF_UNWINDER |
60 | bool "Enable the DWARF unwinder for stacktraces" | |
61 | select FRAME_POINTER | |
da47f4a3 | 62 | depends on SUPERH32 |
bd353861 MF |
63 | default n |
64 | help | |
65 | Enabling this option will make stacktraces more accurate, at | |
66 | the cost of an increase in overall kernel size. | |
67 | ||
740a3e67 PM |
68 | config SH_NO_BSS_INIT |
69 | bool "Avoid zeroing BSS (to speed-up startup on suitable platforms)" | |
70 | depends on DEBUG_KERNEL | |
71 | default n | |
72 | help | |
73 | If running in painfully slow environments, such as an RTL | |
74 | simulation or from remote memory via SHdebug, where the memory | |
25985edc | 75 | can already be guaranteed to ber zeroed on boot, say Y. |
740a3e67 PM |
76 | |
77 | For all other cases, say N. If this option seems perplexing, or | |
78 | you aren't sure, say N. | |
79 | ||
8214d52a PM |
80 | config SH64_SR_WATCH |
81 | bool "Debug: set SR.WATCH to enable hardware watchpoints and trace" | |
fe58cac3 | 82 | depends on SUPERH64 |
8214d52a | 83 | |
473d1cf4 PM |
84 | config MCOUNT |
85 | def_bool y | |
86 | depends on SUPERH32 | |
87 | depends on STACK_DEBUG || FUNCTION_TRACER |