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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sh64/boot/compressed/cache.c
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 'arch/sh64/boot/compressed/cache.c')
-rw-r--r--arch/sh64/boot/compressed/cache.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/sh64/boot/compressed/cache.c b/arch/sh64/boot/compressed/cache.c
new file mode 100644
index 000000000000..708707355ffa
--- /dev/null
+++ b/arch/sh64/boot/compressed/cache.c
@@ -0,0 +1,39 @@
1/*
2 * arch/shmedia/boot/compressed/cache.c -- simple cache management functions
3 *
4 * Code extracted from sh-ipl+g, sh-stub.c, which has the copyright:
5 *
6 * This is originally based on an m68k software stub written by Glenn
7 * Engel at HP, but has changed quite a bit.
8 *
9 * Modifications for the SH by Ben Lee and Steve Chamberlain
10 *
11****************************************************************************
12
13 THIS SOFTWARE IS NOT COPYRIGHTED
14
15 HP offers the following for use in the public domain. HP makes no
16 warranty with regard to the software or it's performance and the
17 user accepts the software "AS IS" with all faults.
18
19 HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
20 TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
21 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22
23****************************************************************************/
24
25#define CACHE_ENABLE 0
26#define CACHE_DISABLE 1
27
28int cache_control(unsigned int command)
29{
30 volatile unsigned int *p = (volatile unsigned int *) 0x80000000;
31 int i;
32
33 for (i = 0; i < (32 * 1024); i += 32) {
34 (void *) *p;
35 p += (32 / sizeof (int));
36 }
37
38 return 0;
39}