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Introduce arch_phys_memset which works like memset but on physical memory

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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>
This commit is contained in:
Gabe Black
2012-12-02 04:55:18 +00:00
committed by Simon Glass
parent ec516c4899
commit 40fef04906
4 changed files with 54 additions and 0 deletions
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24
lib/physmem.c Normal file
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/*
* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
#include <common.h>
#include <physmem.h>
static phys_addr_t __arch_phys_memset(phys_addr_t s, int c, phys_size_t n)
{
void *s_ptr = (void *)(uintptr_t)s;
assert(((phys_addr_t)(uintptr_t)s) == s);
assert(((phys_addr_t)(uintptr_t)(s + n)) == s + n);
return (phys_addr_t)(uintptr_t)memset(s_ptr, c, n);
}
phys_addr_t arch_phys_memset(phys_addr_t s, int c, phys_size_t n)
__attribute__((weak, alias("__arch_phys_memset")));