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1#
2# Configuration for initramfs
3#
4
5config INITRAMFS_SOURCE
6 string "Initramfs source file(s)"
7 default ""
8 help
9 This can be either a single cpio archive with a .cpio suffix or a
10 space-separated list of directories and files for building the
11 initramfs image. A cpio archive should contain a filesystem archive
12 to be used as an initramfs image. Directories should contain a
13 filesystem layout to be included in the initramfs image. Files
14 should contain entries according to the format described by the
15 "usr/gen_init_cpio" program in the kernel tree.
16
17 When multiple directories and files are specified then the
18 initramfs image will be the aggregate of all of them.
19
0979f378 20 See <file:Documentation/early-userspace/README> for more details.
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21
22 If you are not sure, leave it blank.
23
24config INITRAMFS_ROOT_UID
25 int "User ID to map to 0 (user root)"
26 depends on INITRAMFS_SOURCE!=""
27 default "0"
28 help
29 This setting is only meaningful if the INITRAMFS_SOURCE is
30 contains a directory. Setting this user ID (UID) to something
31 other than "0" will cause all files owned by that UID to be
32 owned by user root in the initial ramdisk image.
33
34 If you are not sure, leave it set to "0".
35
36config INITRAMFS_ROOT_GID
37 int "Group ID to map to 0 (group root)"
38 depends on INITRAMFS_SOURCE!=""
39 default "0"
40 help
41 This setting is only meaningful if the INITRAMFS_SOURCE is
42 contains a directory. Setting this group ID (GID) to something
43 other than "0" will cause all files owned by that GID to be
44 owned by group root in the initial ramdisk image.
45
46 If you are not sure, leave it set to "0".
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47
48config RD_GZIP
ec72c666 49 bool "Support initial ramdisks compressed using gzip"
73d8a12f 50 depends on BLK_DEV_INITRD
ec72c666 51 default y
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52 select DECOMPRESS_GZIP
53 help
54 Support loading of a gzip encoded initial ramdisk or cpio buffer.
55 If unsure, say Y.
56
57config RD_BZIP2
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58 bool "Support initial ramdisks compressed using bzip2"
59 default y
73d8a12f 60 depends on BLK_DEV_INITRD
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61 select DECOMPRESS_BZIP2
62 help
63 Support loading of a bzip2 encoded initial ramdisk or cpio buffer
64 If unsure, say N.
65
66config RD_LZMA
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67 bool "Support initial ramdisks compressed using LZMA"
68 default y
73d8a12f 69 depends on BLK_DEV_INITRD
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70 select DECOMPRESS_LZMA
71 help
55d1d26f 72 Support loading of a LZMA encoded initial ramdisk or cpio buffer
fb9a4ca9 73 If unsure, say N.
ab76f3d7 74
3ebe1243 75config RD_XZ
ec72c666 76 bool "Support initial ramdisks compressed using XZ"
3ebe1243 77 depends on BLK_DEV_INITRD
ec72c666 78 default y
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79 select DECOMPRESS_XZ
80 help
81 Support loading of a XZ encoded initial ramdisk or cpio buffer.
82 If unsure, say N.
83
cacb246f 84config RD_LZO
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85 bool "Support initial ramdisks compressed using LZO"
86 default y
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87 depends on BLK_DEV_INITRD
88 select DECOMPRESS_LZO
89 help
90 Support loading of a LZO encoded initial ramdisk or cpio buffer
91 If unsure, say N.
92
e76e1fdf 93config RD_LZ4
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94 bool "Support initial ramdisks compressed using LZ4"
95 default y
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96 depends on BLK_DEV_INITRD
97 select DECOMPRESS_LZ4
98 help
99 Support loading of a LZ4 encoded initial ramdisk or cpio buffer
100 If unsure, say N.