diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /Documentation/fujitsu/frv/configuring.txt |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'Documentation/fujitsu/frv/configuring.txt')
-rw-r--r-- | Documentation/fujitsu/frv/configuring.txt | 125 |
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diff --git a/Documentation/fujitsu/frv/configuring.txt b/Documentation/fujitsu/frv/configuring.txt new file mode 100644 index 000000000000..36e76a2336fa --- /dev/null +++ b/Documentation/fujitsu/frv/configuring.txt | |||
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1 | ======================================= | ||
2 | FUJITSU FR-V LINUX KERNEL CONFIGURATION | ||
3 | ======================================= | ||
4 | |||
5 | ===================== | ||
6 | CONFIGURATION OPTIONS | ||
7 | ===================== | ||
8 | |||
9 | The most important setting is in the "MMU support options" tab (the first | ||
10 | presented in the configuration tools available): | ||
11 | |||
12 | (*) "Kernel Type" | ||
13 | |||
14 | This options allows selection of normal, MMU-requiring linux, and uClinux | ||
15 | (which doesn't require an MMU and doesn't have inter-process protection). | ||
16 | |||
17 | There are a number of settings in the "Processor type and features" section of | ||
18 | the kernel configuration that need to be considered. | ||
19 | |||
20 | (*) "CPU" | ||
21 | |||
22 | The register and instruction sets at the core of the processor. This can | ||
23 | only be set to "FR40x/45x/55x" at the moment - but this permits usage of | ||
24 | the kernel with MB93091 CB10, CB11, CB30, CB41, CB60, CB70 and CB451 | ||
25 | CPU boards, and with the MB93093 PDK board. | ||
26 | |||
27 | (*) "System" | ||
28 | |||
29 | This option allows a choice of basic system. This governs the peripherals | ||
30 | that are expected to be available. | ||
31 | |||
32 | (*) "Motherboard" | ||
33 | |||
34 | This specifies the type of motherboard being used, and the peripherals | ||
35 | upon it. Currently only "MB93090-MB00" can be set here. | ||
36 | |||
37 | (*) "Default cache-write mode" | ||
38 | |||
39 | This controls the initial data cache write management mode. By default | ||
40 | Write-Through is selected, but Write-Back (Copy-Back) can also be | ||
41 | selected. This can be changed dynamically once the kernel is running (see | ||
42 | features.txt). | ||
43 | |||
44 | There are some architecture specific configuration options in the "General | ||
45 | Setup" section of the kernel configuration too: | ||
46 | |||
47 | (*) "Reserve memory uncached for (PCI) DMA" | ||
48 | |||
49 | This requests that a uClinux kernel set aside some memory in an uncached | ||
50 | window for the use as consistent DMA memory (mainly for PCI). At least a | ||
51 | megabyte will be allocated in this way, possibly more. Any memory so | ||
52 | reserved will not be available for normal allocations. | ||
53 | |||
54 | (*) "Kernel support for ELF-FDPIC binaries" | ||
55 | |||
56 | This enables the binary-format driver for the new FDPIC ELF binaries that | ||
57 | this platform normally uses. These binaries are totally relocatable - | ||
58 | their separate sections can relocated independently, allowing them to be | ||
59 | shared on uClinux where possible. This should normally be enabled. | ||
60 | |||
61 | (*) "Kernel image protection" | ||
62 | |||
63 | This makes the protection register governing access to the core kernel | ||
64 | image prohibit access by userspace programs. This option is available on | ||
65 | uClinux only. | ||
66 | |||
67 | There are also a number of settings in the "Kernel Hacking" section of the | ||
68 | kernel configuration especially for debugging a kernel on this | ||
69 | architecture. See the "gdbstub.txt" file for information about those. | ||
70 | |||
71 | |||
72 | ====================== | ||
73 | DEFAULT CONFIGURATIONS | ||
74 | ====================== | ||
75 | |||
76 | The kernel sources include a number of example default configurations: | ||
77 | |||
78 | (*) defconfig-mb93091 | ||
79 | |||
80 | Default configuration for the MB93091-VDK with both CPU board and | ||
81 | MB93090-MB00 motherboard running uClinux. | ||
82 | |||
83 | |||
84 | (*) defconfig-mb93091-fb | ||
85 | |||
86 | Default configuration for the MB93091-VDK with CPU board, | ||
87 | MB93090-MB00 motherboard, and DAV board running uClinux. | ||
88 | Includes framebuffer driver. | ||
89 | |||
90 | |||
91 | (*) defconfig-mb93093 | ||
92 | |||
93 | Default configuration for the MB93093-PDK board running uClinux. | ||
94 | |||
95 | |||
96 | (*) defconfig-cb70-standalone | ||
97 | |||
98 | Default configuration for the MB93091-VDK with only CB70 CPU board | ||
99 | running uClinux. This will use the CB70's DM9000 for network access. | ||
100 | |||
101 | |||
102 | (*) defconfig-mmu | ||
103 | |||
104 | Default configuration for the MB93091-VDK with both CB451 CPU board and | ||
105 | MB93090-MB00 motherboard running MMU linux. | ||
106 | |||
107 | (*) defconfig-mmu-audio | ||
108 | |||
109 | Default configuration for the MB93091-VDK with CB451 CPU board, DAV | ||
110 | board, and MB93090-MB00 motherboard running MMU linux. Includes | ||
111 | audio driver. | ||
112 | |||
113 | (*) defconfig-mmu-fb | ||
114 | |||
115 | Default configuration for the MB93091-VDK with CB451 CPU board, DAV | ||
116 | board, and MB93090-MB00 motherboard running MMU linux. Includes | ||
117 | framebuffer driver. | ||
118 | |||
119 | (*) defconfig-mmu-standalone | ||
120 | |||
121 | Default configuration for the MB93091-VDK with only CB451 CPU board | ||
122 | running MMU linux. | ||
123 | |||
124 | |||
125 | |||