diff options
author | Haavard Skinnemoen <hskinnemoen@atmel.com> | 2006-09-26 02:32:13 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 11:48:54 -0400 |
commit | 5f97f7f9400de47ae837170bb274e90ad3934386 (patch) | |
tree | 514451e6dc6b46253293a00035d375e77b1c65ed /include/asm-avr32/irqflags.h | |
parent | 53e62d3aaa60590d4a69b4e07c29f448b5151047 (diff) |
[PATCH] avr32 architecture
This adds support for the Atmel AVR32 architecture as well as the AT32AP7000
CPU and the AT32STK1000 development board.
AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for
cost-sensitive embedded applications, with particular emphasis on low power
consumption and high code density. The AVR32 architecture is not binary
compatible with earlier 8-bit AVR architectures.
The AVR32 architecture, including the instruction set, is described by the
AVR32 Architecture Manual, available from
http://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf
The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture. It
features a 7-stage pipeline, 16KB instruction and data caches and a full
Memory Management Unit. It also comes with a large set of integrated
peripherals, many of which are shared with the AT91 ARM-based controllers from
Atmel.
Full data sheet is available from
http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf
while the CPU core implementation including caches and MMU is documented by
the AVR32 AP Technical Reference, available from
http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf
Information about the AT32STK1000 development board can be found at
http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918
including a BSP CD image with an earlier version of this patch, development
tools (binaries and source/patches) and a root filesystem image suitable for
booting from SD card.
Alternatively, there's a preliminary "getting started" guide available at
http://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links
to the sources and patches you will need in order to set up a cross-compiling
environment for avr32-linux.
This patch, as well as the other patches included with the BSP and the
toolchain patches, is actively supported by Atmel Corporation.
[dmccr@us.ibm.com: Fix more pxx_page macro locations]
[bunk@stusta.de: fix `make defconfig']
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-avr32/irqflags.h')
-rw-r--r-- | include/asm-avr32/irqflags.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/include/asm-avr32/irqflags.h b/include/asm-avr32/irqflags.h new file mode 100644 index 000000000000..93570daac38a --- /dev/null +++ b/include/asm-avr32/irqflags.h | |||
@@ -0,0 +1,68 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2004-2006 Atmel Corporation | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify | ||
5 | * it under the terms of the GNU General Public License version 2 as | ||
6 | * published by the Free Software Foundation. | ||
7 | */ | ||
8 | #ifndef __ASM_AVR32_IRQFLAGS_H | ||
9 | #define __ASM_AVR32_IRQFLAGS_H | ||
10 | |||
11 | #include <asm/sysreg.h> | ||
12 | |||
13 | static inline unsigned long __raw_local_save_flags(void) | ||
14 | { | ||
15 | return sysreg_read(SR); | ||
16 | } | ||
17 | |||
18 | #define raw_local_save_flags(x) \ | ||
19 | do { (x) = __raw_local_save_flags(); } while (0) | ||
20 | |||
21 | /* | ||
22 | * This will restore ALL status register flags, not only the interrupt | ||
23 | * mask flag. | ||
24 | * | ||
25 | * The empty asm statement informs the compiler of this fact while | ||
26 | * also serving as a barrier. | ||
27 | */ | ||
28 | static inline void raw_local_irq_restore(unsigned long flags) | ||
29 | { | ||
30 | sysreg_write(SR, flags); | ||
31 | asm volatile("" : : : "memory", "cc"); | ||
32 | } | ||
33 | |||
34 | static inline void raw_local_irq_disable(void) | ||
35 | { | ||
36 | asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); | ||
37 | } | ||
38 | |||
39 | static inline void raw_local_irq_enable(void) | ||
40 | { | ||
41 | asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); | ||
42 | } | ||
43 | |||
44 | static inline int raw_irqs_disabled_flags(unsigned long flags) | ||
45 | { | ||
46 | return (flags & SYSREG_BIT(GM)) != 0; | ||
47 | } | ||
48 | |||
49 | static inline int raw_irqs_disabled(void) | ||
50 | { | ||
51 | unsigned long flags = __raw_local_save_flags(); | ||
52 | |||
53 | return raw_irqs_disabled_flags(flags); | ||
54 | } | ||
55 | |||
56 | static inline unsigned long __raw_local_irq_save(void) | ||
57 | { | ||
58 | unsigned long flags = __raw_local_save_flags(); | ||
59 | |||
60 | raw_local_irq_disable(); | ||
61 | |||
62 | return flags; | ||
63 | } | ||
64 | |||
65 | #define raw_local_irq_save(flags) \ | ||
66 | do { (flags) = __raw_local_irq_save(); } while (0) | ||
67 | |||
68 | #endif /* __ASM_AVR32_IRQFLAGS_H */ | ||