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/*
* Copyright (C) 2017-2024 Alibaba Group Holding Limited
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __MEM_LAYOUT_H__
#define __MEM_LAYOUT_H__
#include "../rtconfig.h"
/*
* Physical memory layout (xiaohui: DRAM 4GB @ 0x50000000):
*
* +---------------+ <- MEM_PHYS_BASE + MEM_TOTAL_SIZE (0x150000000)
* | ...... | (unused by kernel, reserved)
* +---------------+ <- MEM_PHYS_BASE + MEM_RTSMART_SIZE
* | guard | MEM_GUARD_SIZE
* +---------------+ <- end of kernel image + heap + page pool
* | page pool | (till RTSMART end, managed by rt_page)
* +---------------+
* | heap | MEM_HEAP_SIZE (after .bss)
* +---------------+
* | kernel | linked at KERNEL_VADDR_START + MEM_PHYS_BASE + MEM_OPENSBI_SIZE
* +---------------+ <- MEM_PHYS_BASE + MEM_OPENSBI_SIZE (0x50200000)
* | opensbi | MEM_OPENSBI_SIZE, fw_dynamic.bin is loaded here by QEMU
* +---------------+ <- MEM_PHYS_BASE (0x50000000)
*
*/
#define MEM_PHYS_BASE 0x50000000
#define MEM_TOTAL_SIZE 0x100000000
#define MEM_GUARD_SIZE 0x1000
/*
* Region reserved for the OpenSBI firmware at the bottom of DRAM.
*/
#define MEM_OPENSBI_SIZE 0x200000
/* memory managed by rt-smart kernel (kernel image + heap + page pool) */
#ifndef MEM_RTSMART_SIZE
#define MEM_RTSMART_SIZE 0x10000000
#endif
/* system heap size, placed right after .bss */
#ifndef MEM_HEAP_SIZE
#define MEM_HEAP_SIZE 0x2000000
#endif
#define MEM_KERNEL_SIZE (MEM_RTSMART_SIZE - MEM_OPENSBI_SIZE - MEM_GUARD_SIZE)
#endif /* __MEM_LAYOUT_H__ */
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