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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
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 * tasks.
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 * userspace 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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    /* Identify version */ 
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    /* Identify version */ 
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    if (header->version != RD_VERSION)
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    if (header->version != RD_VERSION)
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        return RE_UNSUPPORTED;
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        return RE_UNSUPPORTED;
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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;
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    rd_parea.pbase = ALIGN_DOWN((uintptr_t) KA2PA((void *) header + hsize), FRAME_SIZE);
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    rd_parea.pbase = ALIGN_DOWN((uintptr_t) KA2PA((void *) header + hsize),
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    rd_parea.vbase = (uintptr_t) ((void *) header + hsize);
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        FRAME_SIZE);
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    rd_parea.frames = SIZE2FRAMES(dsize);
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    rd_parea.frames = SIZE2FRAMES(dsize);
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    rd_parea.cacheable = true;
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    ddi_parea_register(&rd_parea);
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    ddi_parea_register(&rd_parea);
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    sysinfo_set_item_val("rd", NULL, true);
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    sysinfo_set_item_val("rd", NULL, true);
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    sysinfo_set_item_val("rd.header_size", NULL, hsize);   
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    sysinfo_set_item_val("rd.header_size", NULL, hsize);   
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    sysinfo_set_item_val("rd.size", NULL, dsize);
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    sysinfo_set_item_val("rd.size", NULL, dsize);
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    sysinfo_set_item_val("rd.address.physical", NULL, (unative_t)
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    sysinfo_set_item_val("rd.address.physical", NULL,
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        KA2PA((void *) header + hsize));
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        (unative_t) KA2PA((void *) header + hsize));
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    return RE_OK;
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    return RE_OK;
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}
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}
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/** @}
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/** @}