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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2009-03-28 16:29:51 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-03-28 16:29:51 -0400
commited40d0c472b136682b2fcba05f89762859c7374f (patch)
tree076b83a26bcd63d6158463735dd34c10bbc591dc /arch/sh/mm/pmb-fixed.c
parent9e495834e59ca9b29f1a1f63b9f5533bb022ac49 (diff)
parent5d80f8e5a9dc9c9a94d4aeaa567e219a808b8a4a (diff)
Merge branch 'origin' into devel
Conflicts: sound/soc/pxa/pxa2xx-i2s.c
Diffstat (limited to 'arch/sh/mm/pmb-fixed.c')
-rw-r--r--arch/sh/mm/pmb-fixed.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sh/mm/pmb-fixed.c b/arch/sh/mm/pmb-fixed.c
new file mode 100644
index 000000000000..43c8eac4d8a1
--- /dev/null
+++ b/arch/sh/mm/pmb-fixed.c
@@ -0,0 +1,45 @@
1/*
2 * arch/sh/mm/fixed_pmb.c
3 *
4 * Copyright (C) 2009 Renesas Solutions Corp.
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
8 * for more details.
9 */
10#include <linux/init.h>
11#include <linux/mm.h>
12#include <linux/io.h>
13#include <asm/mmu.h>
14#include <asm/mmu_context.h>
15
16static int __uses_jump_to_uncached fixed_pmb_init(void)
17{
18 int i;
19 unsigned long addr, data;
20
21 jump_to_uncached();
22
23 for (i = 0; i < PMB_ENTRY_MAX; i++) {
24 addr = PMB_DATA + (i << PMB_E_SHIFT);
25 data = ctrl_inl(addr);
26 if (!(data & PMB_V))
27 continue;
28
29 if (data & PMB_C) {
30#if defined(CONFIG_CACHE_WRITETHROUGH)
31 data |= PMB_WT;
32#elif defined(CONFIG_CACHE_WRITEBACK)
33 data &= ~PMB_WT;
34#else
35 data &= ~(PMB_C | PMB_WT);
36#endif
37 }
38 ctrl_outl(data, addr);
39 }
40
41 back_to_cached();
42
43 return 0;
44}
45arch_initcall(fixed_pmb_init);