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Diffstat (limited to 'arch/sh/Kconfig.cpu')
-rw-r--r-- | arch/sh/Kconfig.cpu | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/sh/Kconfig.cpu b/arch/sh/Kconfig.cpu new file mode 100644 index 000000000000..9f329dff88b1 --- /dev/null +++ b/arch/sh/Kconfig.cpu | |||
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1 | menu "Processor features" | ||
2 | |||
3 | choice | ||
4 | prompt "Endianess selection" | ||
5 | default CPU_LITTLE_ENDIAN | ||
6 | help | ||
7 | Some SuperH machines can be configured for either little or big | ||
8 | endian byte order. These modes require different kernels. | ||
9 | |||
10 | config CPU_LITTLE_ENDIAN | ||
11 | bool "Little Endian" | ||
12 | |||
13 | config CPU_BIG_ENDIAN | ||
14 | bool "Big Endian" | ||
15 | |||
16 | endchoice | ||
17 | |||
18 | config SH_FPU | ||
19 | bool "FPU support" | ||
20 | depends on CPU_HAS_FPU | ||
21 | default y | ||
22 | help | ||
23 | Selecting this option will enable support for SH processors that | ||
24 | have FPU units (ie, SH77xx). | ||
25 | |||
26 | This option must be set in order to enable the FPU. | ||
27 | |||
28 | config SH_FPU_EMU | ||
29 | bool "FPU emulation support" | ||
30 | depends on !SH_FPU && EXPERIMENTAL | ||
31 | default n | ||
32 | help | ||
33 | Selecting this option will enable support for software FPU emulation. | ||
34 | Most SH-3 users will want to say Y here, whereas most SH-4 users will | ||
35 | want to say N. | ||
36 | |||
37 | config SH_DSP | ||
38 | bool "DSP support" | ||
39 | depends on CPU_HAS_DSP | ||
40 | default y | ||
41 | help | ||
42 | Selecting this option will enable support for SH processors that | ||
43 | have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP). | ||
44 | |||
45 | This option must be set in order to enable the DSP. | ||
46 | |||
47 | config SH_ADC | ||
48 | bool "ADC support" | ||
49 | depends on CPU_SH3 | ||
50 | default y | ||
51 | help | ||
52 | Selecting this option will allow the Linux kernel to use SH3 on-chip | ||
53 | ADC module. | ||
54 | |||
55 | If unsure, say N. | ||
56 | |||
57 | config SH_STORE_QUEUES | ||
58 | bool "Support for Store Queues" | ||
59 | depends on CPU_SH4 | ||
60 | help | ||
61 | Selecting this option will enable an in-kernel API for manipulating | ||
62 | the store queues integrated in the SH-4 processors. | ||
63 | |||
64 | config SPECULATIVE_EXECUTION | ||
65 | bool "Speculative subroutine return" | ||
66 | depends on CPU_SUBTYPE_SH7780 && EXPERIMENTAL | ||
67 | help | ||
68 | This enables support for a speculative instruction fetch for | ||
69 | subroutine return. There are various pitfalls associated with | ||
70 | this, as outlined in the SH7780 hardware manual. | ||
71 | |||
72 | If unsure, say N. | ||
73 | |||
74 | config CPU_HAS_INTEVT | ||
75 | bool | ||
76 | |||
77 | config CPU_HAS_MASKREG_IRQ | ||
78 | bool | ||
79 | |||
80 | config CPU_HAS_IPR_IRQ | ||
81 | bool | ||
82 | |||
83 | config CPU_HAS_SR_RB | ||
84 | bool | ||
85 | help | ||
86 | This will enable the use of SR.RB register bank usage. Processors | ||
87 | that are lacking this bit must have another method in place for | ||
88 | accomplishing what is taken care of by the banked registers. | ||
89 | |||
90 | See <file:Documentation/sh/register-banks.txt> for further | ||
91 | information on SR.RB and register banking in the kernel in general. | ||
92 | |||
93 | config CPU_HAS_PTEA | ||
94 | bool | ||
95 | |||
96 | config CPU_HAS_DSP | ||
97 | bool | ||
98 | |||
99 | config CPU_HAS_FPU | ||
100 | bool | ||
101 | |||
102 | endmenu | ||