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Annotation of qemu/roms/ipxe/src/image/embedded.c, revision 1.1.1.1

1.1       root        1: /** @file
                      2:  *
                      3:  * Embedded image support
                      4:  *
                      5:  * Embedded images are images built into the iPXE binary and do not require
                      6:  * fetching over the network.
                      7:  */
                      8: 
                      9: FILE_LICENCE ( GPL2_OR_LATER );
                     10: 
                     11: #include <string.h>
                     12: #include <ipxe/image.h>
                     13: #include <ipxe/uaccess.h>
                     14: #include <ipxe/init.h>
                     15: 
                     16: /* Raw image data for all embedded images */
                     17: #undef EMBED
                     18: #define EMBED( _index, _path, _name )                                  \
                     19:        extern char embedded_image_ ## _index ## _data[];               \
                     20:        extern char embedded_image_ ## _index ## _len[];                \
                     21:        __asm__ ( ".section \".rodata\", \"a\", @progbits\n\t"          \
                     22:                  "\nembedded_image_" #_index "_data:\n\t"              \
                     23:                  ".incbin \"" _path "\"\n\t"                           \
                     24:                  "\nembedded_image_" #_index "_end:\n\t"               \
                     25:                  ".equ embedded_image_" #_index "_len, "               \
                     26:                        "( embedded_image_" #_index "_end - "           \
                     27:                        "  embedded_image_" #_index "_data )\n\t"       \
                     28:                  ".previous\n\t" );
                     29: EMBED_ALL
                     30: 
                     31: /* Image structures for all embedded images */
                     32: #undef EMBED
                     33: #define EMBED( _index, _path, _name ) {                                        \
                     34:        .refcnt = REF_INIT ( ref_no_free ),                             \
                     35:        .name = _name,                                                  \
                     36:        .data = ( userptr_t ) ( embedded_image_ ## _index ## _data ),   \
                     37:        .len = ( size_t ) embedded_image_ ## _index ## _len,            \
                     38: },
                     39: static struct image embedded_images[] = {
                     40:        EMBED_ALL
                     41: };
                     42: 
                     43: /**
                     44:  * Register all embedded images
                     45:  */
                     46: static void embedded_init ( void ) {
                     47:        int i;
                     48:        struct image *image;
                     49:        void *data;
                     50:        int rc;
                     51: 
                     52:        /* Skip if we have no embedded images */
                     53:        if ( ! sizeof ( embedded_images ) )
                     54:                return;
                     55: 
                     56:        /* Fix up data pointers and register images */
                     57:        for ( i = 0 ; i < ( int ) ( sizeof ( embedded_images ) /
                     58:                                    sizeof ( embedded_images[0] ) ) ; i++ ) {
                     59:                image = &embedded_images[i];
                     60: 
                     61:                /* virt_to_user() cannot be used in a static
                     62:                 * initialiser, so we cast the pointer to a userptr_t
                     63:                 * in the initialiser and fix it up here.  (This will
                     64:                 * actually be a no-op on most platforms.)
                     65:                 */
                     66:                data = ( ( void * ) image->data );
                     67:                image->data = virt_to_user ( data );
                     68: 
                     69:                DBG ( "Embedded image \"%s\": %zd bytes at %p\n",
                     70:                      image->name, image->len, data );
                     71: 
                     72:                if ( ( rc = register_image ( image ) ) != 0 ) {
                     73:                        DBG ( "Could not register embedded image \"%s\": "
                     74:                              "%s\n", image->name, strerror ( rc ) );
                     75:                        return;
                     76:                }
                     77:        }
                     78: 
                     79:        /* Select the first image */
                     80:        image = &embedded_images[0];
                     81:        if ( ( rc = image_select ( image ) ) != 0 ) {
                     82:                DBG ( "Could not select embedded image \"%s\": %s\n",
                     83:                      image->name, strerror ( rc ) );
                     84:                return;
                     85:        }
                     86: }
                     87: 
                     88: /** Embedded image initialisation function */
                     89: struct init_fn embedded_init_fn __init_fn ( INIT_LATE ) = {
                     90:        .initialise = embedded_init,
                     91: };

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