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#include <lib/rd.h>
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#include <lib/rd.h>
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#include <byteorder.h>
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#include <byteorder.h>
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#include <mm/frame.h>
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#include <mm/frame.h>
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#include <sysinfo/sysinfo.h>
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#include <sysinfo/sysinfo.h>
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#include <ddi/ddi.h>
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#include <ddi/ddi.h>
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#include <print.h>
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#include <align.h>
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#include <align.h>
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static parea_t rd_parea;        /**< Physical memory area for rd. */
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static parea_t rd_parea;        /**< Physical memory area for rd. */
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/**
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/**
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 * RAM disk initialization routine. At this point, the RAM disk memory is shared
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 * RAM disk initialization routine. At this point, the RAM disk memory is shared
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 * and information about the share is provided as sysinfo values to the userspace
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 * and information about the share is provided as sysinfo values to the userspace
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 * tasks.
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 * tasks.
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 */  
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 */  
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int init_rd(rd_header * header, size_t size)
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int init_rd(rd_header_t *header, size_t size)
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{
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{
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    /* Identify RAM disk */
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    /* Identify RAM disk */
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    if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) ||
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    if ((header->magic[0] != RD_MAG0) || (header->magic[1] != RD_MAG1) ||
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        (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3))
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        (header->magic[2] != RD_MAG2) || (header->magic[3] != RD_MAG3))
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        return RE_INVALID;
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        return RE_INVALID;
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        return RE_UNSUPPORTED;
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        return RE_UNSUPPORTED;
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    }
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    }
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    if ((hsize % FRAME_SIZE) || (dsize % FRAME_SIZE))
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    if ((hsize % FRAME_SIZE) || (dsize % FRAME_SIZE))
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        return RE_UNSUPPORTED;
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        return RE_UNSUPPORTED;
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    if (dsize % FRAME_SIZE)
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        return RE_UNSUPPORTED;
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    if (hsize > size)
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    if (hsize > size)
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        return RE_INVALID;
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        return RE_INVALID;
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    if ((uint64_t) hsize + dsize > size)
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    if ((uint64_t) hsize + dsize > size)
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        dsize = size - hsize;
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        dsize = size - hsize;