The default implementation of this function is just memset, but other implementations will be needed when physical memory isn't accessible by U-Boot using normal addressing mechanisms. Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Che-Liang Chiou <clchiou@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>master
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/*
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* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
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* Use of this source code is governed by a BSD-style license that can be |
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* found in the LICENSE file. |
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* |
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* Alternatively, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL") version 2 as published by the Free |
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* Software Foundation. |
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*/ |
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|
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/*
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* These functions work like memset but operate on physical memory which may |
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* not be accessible directly. |
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* |
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* @param s The physical address to start setting memory at. |
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* @param c The character to set each byte of the region to. |
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* @param n The number of bytes to set. |
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* |
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* @return The physical address of the memory which was set. |
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*/ |
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phys_addr_t arch_phys_memset(phys_addr_t s, int c, phys_size_t n); |
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/*
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* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
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* Use of this source code is governed by a BSD-style license that can be |
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* found in the LICENSE file. |
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* |
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* Alternatively, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL") version 2 as published by the Free |
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* Software Foundation. |
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*/ |
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#include <common.h> |
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#include <physmem.h> |
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static phys_addr_t __arch_phys_memset(phys_addr_t s, int c, phys_size_t n) |
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{ |
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void *s_ptr = (void *)(uintptr_t)s; |
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assert(((phys_addr_t)(uintptr_t)s) == s); |
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assert(((phys_addr_t)(uintptr_t)(s + n)) == s + n); |
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return (phys_addr_t)(uintptr_t)memset(s_ptr, c, n); |
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} |
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phys_addr_t arch_phys_memset(phys_addr_t s, int c, phys_size_t n) |
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__attribute__((weak, alias("__arch_phys_memset"))); |
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