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- /******************************************************************************
- * *
- * License Agreement *
- * *
- * Copyright (c) 2003,2007 Altera Corporation, San Jose, California, USA. *
- * All rights reserved. *
- * *
- * Permission is hereby granted, free of charge, to any person obtaining a *
- * copy of this software and associated documentation files (the "Software"), *
- * to deal in the Software without restriction, including without limitation *
- * the rights to use, copy, modify, merge, publish, distribute, sublicense, *
- * and/or sell copies of the Software, and to permit persons to whom the *
- * Software is furnished to do so, subject to the following conditions: *
- * *
- * The above copyright notice and this permission notice shall be included in *
- * all copies or substantial portions of the Software. *
- * *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE *
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
- * DEALINGS IN THE SOFTWARE. *
- * *
- * This agreement shall be governed in all respects by the laws of the State *
- * of California and by the laws of the United States of America. *
- * *
- ******************************************************************************/
- #include "sys/alt_warning.h"
- #include "sys/alt_cache.h"
- #include "system.h"
- /*
- * Convert a pointer to a block of cached memory into a block of uncached memory.
- * Return a pointer that should be used to access the uncached memory.
- *
- * This routine was created for Nios II Gen1 cores which allow mixing cacheable and
- * uncachable data in the same data cache line. So, they could take any memory region
- * and make it uncached. However, Nios II Gen2 cores don't support mixing cacheable
- * and uncachable data in the same data cache line so require the memory region to
- * be aligned to a cache line boundary and must be an integer number of cache line
- * bytes in size. So, software on a Nios II Gen2 core shouldn't really be using this
- * function so it fails with a link error.
- */
- volatile void*
- alt_remap_uncached(void* ptr, alt_u32 len)
- {
- /* Generate a link time error, should this function ever be called. */
- ALT_LINK_ERROR("alt_remap_uncached() is not available because Nios II Gen2 cores with data caches don't support mixing cacheable and uncacheable data on the same line.");
- return NULL;
- }
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