50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
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#include "buffer.h"
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#include "image.h"
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static struct image images_start[0] __image_start;
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static struct image images_end[0] __image_end;
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/*
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* Identify the image format
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*
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*/
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static struct image * identify_image ( struct buffer *buffer ) {
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struct image_header header;
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int header_len = sizeof ( header );
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off_t len;
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struct image *image;
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/* Copy first (up to) 512 bytes of image to easily-accessible
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* buffer.
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*/
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len = buffer->fill;
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copy_from_phys ( &header, buffer->start,
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len < header_len ? len : header_len );
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for ( image = images_start ; image < images_end ; image++ ) {
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if ( image->probe ( &header, len ) )
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return image;
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}
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return NULL;
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}
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/*
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* Boot a loaded image
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*
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*/
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int boot_image ( struct buffer *buffer ) {
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struct image *image;
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image = identify_image ( buffer );
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if ( ! image ) {
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DBG ( "IMAGE could not identify image format\n" );
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return 0;
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}
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DBG ( "IMAGE found %s image (length %d)\n",
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image->name, buffer->fill );
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return image->boot ( buffer->start, buffer->fill );
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}
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