mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 13:40:54 +07:00
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>
26 lines
737 B
C
26 lines
737 B
C
#ifndef __ASM_AVR32_UNALIGNED_H
|
|
#define __ASM_AVR32_UNALIGNED_H
|
|
|
|
/*
|
|
* AVR32 can handle some unaligned accesses, depending on the
|
|
* implementation. The AVR32 AP implementation can handle unaligned
|
|
* words, but halfwords must be halfword-aligned, and doublewords must
|
|
* be word-aligned.
|
|
*
|
|
* TODO: Make all this CPU-specific and optimize.
|
|
*/
|
|
|
|
#include <linux/string.h>
|
|
|
|
/* Use memmove here, so gcc does not insert a __builtin_memcpy. */
|
|
|
|
#define get_unaligned(ptr) \
|
|
({ __typeof__(*(ptr)) __tmp; memmove(&__tmp, (ptr), sizeof(*(ptr))); __tmp; })
|
|
|
|
#define put_unaligned(val, ptr) \
|
|
({ __typeof__(*(ptr)) __tmp = (val); \
|
|
memmove((ptr), &__tmp, sizeof(*(ptr))); \
|
|
(void)0; })
|
|
|
|
#endif /* __ASM_AVR32_UNALIGNED_H */
|