osd-contiki/cpu/x86/quarkX1000_dma.ld

/*
 * Copyright (C) 2015-2016, Intel Corporation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 */

SECTIONS {

    /*
       It would be more natural to use a 1K alignment for this entire section.
       However, the UEFI GenFw program ratchets up its alignment
       granularity to the maximum granularity discovered in its input file.
       Using 1K-alignment perturbs the symbols, hindering debugging.  Thus,
       this section is simply padded out to the desired alignment and
       declared to have a section alignment of only 32 bytes.

       The alignment directives used here suffice even when paging is in use,
       because this is the last section and directly follows one (.bss.meta)
       that is 4K-aligned.
    */
    .bss.dma (NOLOAD) : ALIGN (32)
    {
        /* The IMR feature operates at 1K granularity. */
        . = ALIGN(1K);
        _sbss_dma_addr = .;
        *(.dma_bss)
        . = ALIGN(1K);
        _ebss_dma_addr = .;
    }

}