diff options
| author | Gabe Black <gabeblack@chromium.org> | 2012-12-02 04:55:18 +0000 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2012-12-06 14:30:40 -0800 |
| commit | 40fef0490610686022f99b8e070df7ac761c11a0 (patch) | |
| tree | d3338158170744d00fb569ffac2edecbf72dbd2c /lib/physmem.c | |
| parent | ec516c489969c1c12e9b26900facee6efd60c938 (diff) | |
Introduce arch_phys_memset which works like memset but on physical memory
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>
Diffstat (limited to 'lib/physmem.c')
| -rw-r--r-- | lib/physmem.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/physmem.c b/lib/physmem.c new file mode 100644 index 00000000000..0f035edcbe5 --- /dev/null +++ b/lib/physmem.c @@ -0,0 +1,24 @@ +/* + * 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"))); |