mirror of https://github.com/RT-Thread/rt-thread
76 lines
2.0 KiB
C
76 lines
2.0 KiB
C
/*
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* Copyright (c) 2006-2021, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef MEMORY_LAYOUT_H__
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#define MEMORY_LAYOUT_H__
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#include "../rtconfig.h"
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/*
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* Physical Memory layout:
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*
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* +---------+ <- CONFIG_MEM_TOTAL_SIZE
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* | ...... | maybe zero
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* +---------+ <- CONFIG_MEM_MMZ_BASE + CONFIG_MEM_MMZ_SIZE
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* | |
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* | |
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* | |
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* | |
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* | |
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* | |
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* | |
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* | |
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* |---------| <- CONFIG_MEM_MMZ_BASE
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* | ...... | maybe zero
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* +---------+ <- CONFIG_MEM_RTSMART_SIZE
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* | guard | MEM_GUARD_SIZE
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* +---------+ <- End of Kerenl
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* | |
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* | |
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* +---------+
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* | heap | CONFIG_MEM_RTSMART_HEAP_SIZE
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* +---------+
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* | |
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* +---------+ <- Beginning of Kernel <- mapping to KERNEL_VADDR_START + MEM_OPENSBI_SIZE
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* | opensbi | MEM_OPENSBI_SIZE
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* +---------+ <- Beginning of Physical Memory (0) <- mapping to KERNEL_VADDR_START
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*/
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#define MEM_OPENSBI_SIZE 0x20000 // 128K
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#define MEM_GUARD_SIZE 0x1000 // 4K
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/*
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* The value of CONFIG_XXX may come from rtconfig.h. This is mainly for
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* compatibility with compiling RT-Thread in the SDK environment and using
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* the SDK configuration.
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*
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* If CONFIG_XXX is defined, it means that the value comes from the SDK
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* configuration, otherwise the default configuration of bsp/k230 in RT-Thead
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* is used. The default configuration of bsp/k230 is for the 01Studio CanMV
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* development board that supports 512MB of memory.
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*/
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#ifndef CONFIG_MEM_TOTAL_SIZE
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#define CONFIG_MEM_TOTAL_SIZE 0x20000000 // 512M
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#endif
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#ifndef CONFIG_MEM_RTSMART_SIZE
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#define CONFIG_MEM_RTSMART_SIZE 0x10000000 // 256M
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#endif
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#ifndef CONFIG_MEM_RTSMART_HEAP_SIZE
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#define CONFIG_MEM_RTSMART_HEAP_SIZE 0x2000000 // 32M
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#endif
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#ifndef CONFIG_MEM_MMZ_BASE
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#define CONFIG_MEM_MMZ_BASE 0x10000000 // 512M
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#endif
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#ifndef CONFIG_MEM_MMZ_SIZE
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#define CONFIG_MEM_MMZ_SIZE 0x10000000 // 256M
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#endif
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#define MEM_KERNEL_SIZE (CONFIG_MEM_RTSMART_SIZE - MEM_OPENSBI_SIZE - MEM_GUARD_SIZE)
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#endif // MEMORY_LAYOUT_H__
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