mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
5f97f7f940
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>
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
|
|
* Copyright (C) 2004-2006 Atmel Corporation
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#ifndef __ASM_AVR32_IRQFLAGS_H
|
|
#define __ASM_AVR32_IRQFLAGS_H
|
|
|
|
#include <asm/sysreg.h>
|
|
|
|
static inline unsigned long __raw_local_save_flags(void)
|
|
{
|
|
return sysreg_read(SR);
|
|
}
|
|
|
|
#define raw_local_save_flags(x) \
|
|
do { (x) = __raw_local_save_flags(); } while (0)
|
|
|
|
/*
|
|
* This will restore ALL status register flags, not only the interrupt
|
|
* mask flag.
|
|
*
|
|
* The empty asm statement informs the compiler of this fact while
|
|
* also serving as a barrier.
|
|
*/
|
|
static inline void raw_local_irq_restore(unsigned long flags)
|
|
{
|
|
sysreg_write(SR, flags);
|
|
asm volatile("" : : : "memory", "cc");
|
|
}
|
|
|
|
static inline void raw_local_irq_disable(void)
|
|
{
|
|
asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
|
|
}
|
|
|
|
static inline void raw_local_irq_enable(void)
|
|
{
|
|
asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory");
|
|
}
|
|
|
|
static inline int raw_irqs_disabled_flags(unsigned long flags)
|
|
{
|
|
return (flags & SYSREG_BIT(GM)) != 0;
|
|
}
|
|
|
|
static inline int raw_irqs_disabled(void)
|
|
{
|
|
unsigned long flags = __raw_local_save_flags();
|
|
|
|
return raw_irqs_disabled_flags(flags);
|
|
}
|
|
|
|
static inline unsigned long __raw_local_irq_save(void)
|
|
{
|
|
unsigned long flags = __raw_local_save_flags();
|
|
|
|
raw_local_irq_disable();
|
|
|
|
return flags;
|
|
}
|
|
|
|
#define raw_local_irq_save(flags) \
|
|
do { (flags) = __raw_local_irq_save(); } while (0)
|
|
|
|
#endif /* __ASM_AVR32_IRQFLAGS_H */
|