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arch: arm64: Introduce ARM64 (AArch64) architecture

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Introduce the basic ARM64 architecture support.

A new CONFIG_ARM64 symbol is introduced for the new architecture and new
cmake / Kconfig files are added to switch between ARM and ARM64.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>
This commit is contained in:
Carlo Caione 2019-11-10 16:17:19 +00:00 • committed by Anas Nashif
commit 1be0c05311
43 changed files with 2579 additions and 170 deletions
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65
include/arch/arm/aarch64/asm_inline_gcc.h Normal file
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/*
* Copyright (c) 2019 Carlo Caione <ccaione@baylibre.com>
*
* SPDX-License-Identifier: Apache-2.0
*/
/* Either public functions or macros or invoked by public functions */
#ifndef ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_ASM_INLINE_GCC_H_
#define ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_ASM_INLINE_GCC_H_
/*
* The file must not be included directly
* Include arch/cpu.h instead
*/
#ifndef _ASMLANGUAGE
#include <arch/arm/aarch64/cpu.h>
#include <zephyr/types.h>
#ifdef __cplusplus
extern "C" {
#endif
static ALWAYS_INLINE unsigned int arch_irq_lock(void)
{
unsigned int key;
/*
* Return the whole DAIF register as key but use DAIFSET to disable
* IRQs.
*/
__asm__ volatile("mrs %0, daif;"
"msr daifset, %1;"
"isb"
: "=r" (key)
: "i" (DAIFSET_IRQ)
: "memory", "cc");
return key;
}
static ALWAYS_INLINE void arch_irq_unlock(unsigned int key)
{
__asm__ volatile("msr daif, %0;"
"isb"
:
: "r" (key)
: "memory", "cc");
}
static ALWAYS_INLINE bool arch_irq_unlocked(unsigned int key)
{
/* We only check the (I)RQ bit on the DAIF register */
return (key & DAIF_IRQ) == 0;
}
#ifdef __cplusplus
}
#endif
#endif /* _ASMLANGUAGE */
#endif /* ZEPHYR_INCLUDE_ARCH_ARM_AARCH64_ASM_INLINE_GCC_H_ */