48 lines
2.1 KiB
Plaintext
48 lines
2.1 KiB
Plaintext
/*
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* Copyright (C) 2015-2016, Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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SECTIONS {
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.bss.dma (NOLOAD) : AT(_ebss_pre_dma_addr) ALIGN (32)
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{
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/* IMRs are used to restrict DMA, and they require 1K physical address alignment. */
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. += ALIGN(_ebss_pre_dma_addr, 1K) - ALIGN(_ebss_pre_dma_addr, 32);
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*(.dma_bss)
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}
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_sbss_dma_addr = LOADADDR(.bss.dma) + ALIGN(_ebss_pre_dma_addr, 1K) - ALIGN(_ebss_pre_dma_addr, 32);
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/*
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Effectively pointing beyond the end of .bss.dma is acceptable, since
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.bss.dma is the last section in memory.
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*/
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_ebss_dma_addr = ALIGN(LOADADDR(.bss.dma) + SIZEOF(.bss.dma), 1K);
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}
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