94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/*
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* arch/arm/mach-sunxi/include/mach/memory.h
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*
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* Copyright(c) 2013-2015 Allwinnertech Co., Ltd.
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* http://www.allwinnertech.com
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*
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* Author: liugang <liugang@allwinnertech.com>
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* Sugar <shuge@allwinnertech.com>
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*
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* sunxi memory header file
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program.
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*/
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#ifndef __SUNXI_MEMORY_H
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#define __SUNXI_MEMORY_H
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/*
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* About: PLAT_PHYS_OFFSET & PLAT_MEM_SIZE
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* Here, I just set a default value. You can use the context of subdirectory
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* to cover it, such as:
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* #include "xxx/memory.h"
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*
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*/
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#if !defined(PLAT_PHYS_OFFSET)
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#ifdef CONFIG_ARCH_SUN3I
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#define PLAT_PHYS_OFFSET UL(0x80000000)
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#else
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#define PLAT_PHYS_OFFSET UL(0x40000000)
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#endif
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#endif
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#if !defined(PLAT_MEM_SIZE)
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#define PLAT_MEM_SIZE SZ_2G /* Default memory size */
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#endif
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/*
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* NOTE: CMA reserved area: (CONFIG_CMA_RESERVE_BASE ~ CONFIG_CMA_RESERVE_BASE + CONFIG_CMA_SIZE_MBYTES),
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* which is reserved in the function of dma_contiguous_reserve, drivers/base/dma-contiguous.c.
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* Please DO NOT conflict with it when you reserved your own areas.
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*
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* We need to restrict CMA area in the front 256M, because VE only support these address.
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*/
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#if defined CONFIG_ARCH_SUN8IW5P1
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#include "sun8i/memory-sun8iw5p1.h"
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#endif
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#define __sram __section(.sram.text)
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#define __sramdata __section(.sram.data)
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/* For assembly routines */
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#define __SRAM .section ".sram.text","ax"
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#define __SRAMDATA .section ".sram.text","aw"
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#ifndef SRAM_DDRFREQ_OFFSET
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#define SRAM_DDRFREQ_OFFSET 0xF0000000
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#endif
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#define SUNXI_DDRFREQ_SRAM_SECTION(OFFSET, align) \
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. = ALIGN(align); \
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__sram_start = .; \
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.sram.text OFFSET : AT(__sram_start) { \
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__sram_text_start = .; \
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. = ALIGN(align); \
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*(.sram.text) \
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__sram_text_end = .; \
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} \
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.sram.data OFFSET + SIZEOF(.sram.text) : \
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AT(__sram_start + SIZEOF(.sram.text)) { \
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__sram_data_start = .; \
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. = ALIGN(align); \
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*(.sram.data) \
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__sram_data_end = .; \
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} \
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. = __sram_start + SIZEOF(.sram.text) + \
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SIZEOF(.sram.data); \
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__sram_end = .;
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#define SUNXI_SRAM_SECTION \
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SUNXI_DDRFREQ_SRAM_SECTION(SRAM_DDRFREQ_OFFSET, 4)
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#endif /* __SUNXI_MEMORY_H */
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