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https://github.com/zephyrproject-rtos/zephyr
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12cc6598b0
* add arc mpu driver * modify the corresponding kconfig and kbuild * currently only em_starterkit 2.2's em7d configuration has mpu feature (mpu version 2) * as the minimum region size of arc mpu version 2 is 2048 bytes and region size should be power of 2, the stack size of threads (including main thread and idle thread) should be at least 2048 bytes and power of 2 * for mpu stack guard feature, a stack guard region of 2048 bytes is generated. This brings more memory footprint * For arc mpu version 3, the minimum region size is 32 bytes. * the codes are tested by the mpu_stack_guard_test and stackprot Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief ARC specific kernel interface header
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*
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* This header contains the ARC specific kernel interface. It is
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* included by the kernel interface architecture-abstraction header
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* include/arch/cpu.h)
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*/
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#ifndef _ARC_ARCH__H_
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#define _ARC_ARCH__H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* APIs need to support non-byte addressable architectures */
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#define OCTET_TO_SIZEOFUNIT(X) (X)
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#define SIZEOFUNIT_TO_OCTET(X) (X)
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#include <sw_isr_table.h>
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#ifdef CONFIG_CPU_ARCV2
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#include <arch/arc/v2/exc.h>
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#include <arch/arc/v2/irq.h>
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#include <arch/arc/v2/ffs.h>
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#include <arch/arc/v2/error.h>
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#include <arch/arc/v2/misc.h>
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#include <arch/arc/v2/aux_regs.h>
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#include <arch/arc/v2/arcv2_irq_unit.h>
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#include <arch/arc/v2/asm_inline.h>
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#include <arch/arc/v2/addr_types.h>
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#endif
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#if defined(CONFIG_MPU_STACK_GUARD)
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#if defined(CONFIG_ARC_CORE_MPU)
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#if CONFIG_ARC_MPU_VER == 2
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/* The minimum MPU region of MPU v2 is 2048 bytes */
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#define STACK_ALIGN 2048
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#elif CONFIG_ARC_MPU_VER == 3
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#define STACK_ALIGN 32
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#endif
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#else /* CONFIG_ARC_CORE_MPU */
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#error "Unsupported STACK_ALIGN"
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#endif
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#else /* CONFIG_MPU_STACK_GUARD */
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#define STACK_ALIGN 4
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#endif
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#define _ARCH_THREAD_STACK_DEFINE(sym, size) \
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struct _k_thread_stack_element __noinit __aligned(STACK_ALIGN) \
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sym[size+STACK_ALIGN]
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#define _ARCH_THREAD_STACK_ARRAY_DEFINE(sym, nmemb, size) \
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struct _k_thread_stack_element __noinit __aligned(STACK_ALIGN) \
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sym[nmemb][size+STACK_ALIGN]
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#define _ARCH_THREAD_STACK_MEMBER(sym, size) \
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struct _k_thread_stack_element __aligned(STACK_ALIGN) \
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sym[size+STACK_ALIGN]
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#define _ARCH_THREAD_STACK_SIZEOF(sym) (sizeof(sym) - STACK_ALIGN)
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#define _ARCH_THREAD_STACK_BUFFER(sym) ((char *)(sym + STACK_ALIGN))
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ARC_ARCH__H_ */
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