diff options
Diffstat (limited to 'arch/mips/Kconfig.debug')
-rw-r--r-- | arch/mips/Kconfig.debug | 59 |
1 files changed, 55 insertions, 4 deletions
diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug index 364ca8938807..d2b88a0be519 100644 --- a/arch/mips/Kconfig.debug +++ b/arch/mips/Kconfig.debug | |||
@@ -6,15 +6,66 @@ config TRACE_IRQFLAGS_SUPPORT | |||
6 | 6 | ||
7 | source "lib/Kconfig.debug" | 7 | source "lib/Kconfig.debug" |
8 | 8 | ||
9 | config EARLY_PRINTK | ||
10 | bool "Early printk" if EMBEDDED | ||
11 | depends on SYS_HAS_EARLY_PRINTK | ||
12 | default y | ||
13 | help | ||
14 | This option enables special console drivers which allow the kernel | ||
15 | to print messages very early in the bootup process. | ||
16 | |||
17 | This is useful for kernel debugging when your machine crashes very | ||
18 | early before the console code is initialized. For normal operation, | ||
19 | it is not recommended because it looks ugly on some machines and | ||
20 | doesn't cooperate with an X server. You should normally say N here, | ||
21 | unless you want to debug such a crash. | ||
22 | |||
23 | config CMDLINE_BOOL | ||
24 | bool "Built-in kernel command line" | ||
25 | default n | ||
26 | help | ||
27 | For most systems, it is firmware or second stage bootloader that | ||
28 | by default specifies the kernel command line options. However, | ||
29 | it might be necessary or advantageous to either override the | ||
30 | default kernel command line or add a few extra options to it. | ||
31 | For such cases, this option allows you to hardcode your own | ||
32 | command line options directly into the kernel. For that, you | ||
33 | should choose 'Y' here, and fill in the extra boot arguments | ||
34 | in CONFIG_CMDLINE. | ||
35 | |||
36 | The built-in options will be concatenated to the default command | ||
37 | line if CMDLINE_OVERRIDE is set to 'N'. Otherwise, the default | ||
38 | command line will be ignored and replaced by the built-in string. | ||
39 | |||
40 | Most MIPS systems will normally expect 'N' here and rely upon | ||
41 | the command line from the firmware or the second-stage bootloader. | ||
42 | |||
9 | config CMDLINE | 43 | config CMDLINE |
10 | string "Default kernel command string" | 44 | string "Default kernel command string" |
45 | depends on CMDLINE_BOOL | ||
11 | default "" | 46 | default "" |
12 | help | 47 | help |
13 | On some platforms, there is currently no way for the boot loader to | 48 | On some platforms, there is currently no way for the boot loader to |
14 | pass arguments to the kernel. For these platforms, you can supply | 49 | pass arguments to the kernel. For these platforms, and for the cases |
15 | some command-line options at build time by entering them here. In | 50 | when you want to add some extra options to the command line or ignore |
16 | other cases you can specify kernel args so that you don't have | 51 | the default command line, you can supply some command-line options at |
17 | to set them up in board prom initialization routines. | 52 | build time by entering them here. In other cases you can specify |
53 | kernel args so that you don't have to set them up in board prom | ||
54 | initialization routines. | ||
55 | |||
56 | For more information, see the CMDLINE_BOOL and CMDLINE_OVERRIDE | ||
57 | options. | ||
58 | |||
59 | config CMDLINE_OVERRIDE | ||
60 | bool "Built-in command line overrides firware arguments" | ||
61 | default n | ||
62 | depends on CMDLINE_BOOL | ||
63 | help | ||
64 | By setting this option to 'Y' you will have your kernel ignore | ||
65 | command line arguments from firmware or second stage bootloader. | ||
66 | Instead, the built-in command line will be used exclusively. | ||
67 | |||
68 | Normally, you will choose 'N' here. | ||
18 | 69 | ||
19 | config DEBUG_STACK_USAGE | 70 | config DEBUG_STACK_USAGE |
20 | bool "Enable stack utilization instrumentation" | 71 | bool "Enable stack utilization instrumentation" |