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43a9e6a10b
1. Use phys_addr_t instead of u64, which can work for both 32/64 bits. 2. Check whether the input physical address is above TO_PHYS_MASK (and return NULL if yes) for the DMW version. Note: In theory early_ioremap() also need the TO_PHYS_MASK checking, but the UEFI BIOS pass some DMW virtual addresses. Cc: stable@vger.kernel.org Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
29 lines
654 B
C
29 lines
654 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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*/
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#include <asm/io.h>
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#include <asm-generic/early_ioremap.h>
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void __init __iomem *early_ioremap(phys_addr_t phys_addr, unsigned long size)
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{
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return ((void __iomem *)TO_CACHE(phys_addr));
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}
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void __init early_iounmap(void __iomem *addr, unsigned long size)
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{
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}
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void * __init early_memremap_ro(resource_size_t phys_addr, unsigned long size)
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{
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return early_memremap(phys_addr, size);
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}
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void * __init early_memremap_prot(resource_size_t phys_addr, unsigned long size,
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unsigned long prot_val)
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{
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return early_memremap(phys_addr, size);
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}
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