aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/include/asm/tcm.h
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@stericsson.com>2009-09-15 12:30:37 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-09-15 17:11:05 -0400
commitbc581770cfdd8c17ea17d324dc05e2f9c599e7ca (patch)
treec6d2c2eb82d8a6c6851de0ecc7d8c0e63e026266 /arch/arm/include/asm/tcm.h
parent18240904960a39e582ced8ba8ececb10b8c22dd3 (diff)
ARM: 5580/2: ARM TCM (Tightly-Coupled Memory) support v3
This adds the TCM interface to Linux, when active, it will detect and report TCM memories and sizes early in boot if present, introduce generic TCM memory handling, provide a generic TCM memory pool and select TCM memory for the U300 platform. See the Documentation/arm/tcm.txt for documentation. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/tcm.h')
-rw-r--r--arch/arm/include/asm/tcm.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/include/asm/tcm.h b/arch/arm/include/asm/tcm.h
new file mode 100644
index 000000000000..5929ef5d927a
--- /dev/null
+++ b/arch/arm/include/asm/tcm.h
@@ -0,0 +1,31 @@
1/*
2 *
3 * Copyright (C) 2008-2009 ST-Ericsson AB
4 * License terms: GNU General Public License (GPL) version 2
5 *
6 * Author: Rickard Andersson <rickard.andersson@stericsson.com>
7 * Author: Linus Walleij <linus.walleij@stericsson.com>
8 *
9 */
10#ifndef __ASMARM_TCM_H
11#define __ASMARM_TCM_H
12
13#ifndef CONFIG_HAVE_TCM
14#error "You should not be including tcm.h unless you have a TCM!"
15#endif
16
17#include <linux/compiler.h>
18
19/* Tag variables with this */
20#define __tcmdata __section(.tcm.data)
21/* Tag constants with this */
22#define __tcmconst __section(.tcm.rodata)
23/* Tag functions inside TCM called from outside TCM with this */
24#define __tcmfunc __attribute__((long_call)) __section(.tcm.text) noinline
25/* Tag function inside TCM called from inside TCM with this */
26#define __tcmlocalfunc __section(.tcm.text)
27
28void *tcm_alloc(size_t len);
29void tcm_free(void *addr, size_t len);
30
31#endif