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https://github.com/brain-hackers/u-boot-brain
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9a387128e3
For most of architectures in U-Boot, virtual address is straight mapped to physical address. So, it makes sense to have generic defines of ioremap and friends in <linux/io.h>. All of them are just empty and will disappear at compile time, but they will be helpful to implement drivers which are counterparts of Linux ones. I notice MIPS already has its own implementation, so I added a Kconfig symbol CONFIG_HAVE_ARCH_IOREMAP which MIPS (and maybe Sandbox as well) can select. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
27 lines
483 B
C
27 lines
483 B
C
/*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _LINUX_IO_H
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#define _LINUX_IO_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <asm/io.h>
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#ifndef CONFIG_HAVE_ARCH_IOREMAP
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static inline void __iomem *ioremap(resource_size_t offset,
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resource_size_t size)
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{
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return (void __iomem *)(unsigned long)offset;
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}
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static inline void iounmap(void __iomem *addr)
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{
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}
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#define devm_ioremap(dev, offset, size) ioremap(offset, size)
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#endif
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#endif /* _LINUX_IO_H */
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