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Annotation of qemu/roms/SLOF/other-licence/common/module_entry.c, revision 1.1.1.1

1.1       root        1: /******************************************************************************
                      2:  * Copyright (c) 2004, 2008 IBM Corporation
                      3:  * All rights reserved.
                      4:  * This program and the accompanying materials
                      5:  * are made available under the terms of the BSD License
                      6:  * which accompanies this distribution, and is available at
                      7:  * http://www.opensource.org/licenses/bsd-license.php
                      8:  *
                      9:  * Contributors:
                     10:  *     IBM Corporation - initial implementation
                     11:  *****************************************************************************/
                     12: 
                     13: #include "netdriver_int.h"
                     14: 
                     15: extern snk_module_t snk_module_interface;
                     16: 
                     17: snk_kernel_t *snk_kernel_interface = 0;
                     18: 
                     19: extern int
                     20: check_driver( pci_config_t *pci_conf );
                     21: 
                     22: 
                     23: static void*
                     24: memset( void *dest, int c, size_t n )
                     25: {
                     26:        while( n-- ) {
                     27:                *( char * ) dest++ = ( char ) c;
                     28:        }
                     29:        return dest;
                     30: }
                     31: 
                     32: 
                     33: extern char __bss_start;
                     34: extern char __bss_size;
                     35: 
                     36: snk_module_t*
                     37: module_init(snk_kernel_t *snk_kernel_int, pci_config_t *pciconf)
                     38: {
                     39:        /* Need to clear bss, heavy linker script dependency, expert change only */
                     40:        char              *bss      = &__bss_start;
                     41:        unsigned long long bss_size = (unsigned long long) &__bss_size;
                     42: 
                     43:        if (((unsigned long long) bss) + bss_size >= 0xFF00000 
                     44:         || bss_size >= 0x2000000) {
                     45:                snk_kernel_int->print("BSS size (%llu bytes) is too big!\n", bss_size);
                     46:                return 0;
                     47:        }
                     48: 
                     49:        memset(bss, 0, bss_size);
                     50: 
                     51:        if (snk_kernel_int->version != snk_module_interface.version) {
                     52:                return 0;
                     53:        }
                     54: 
                     55:        snk_kernel_interface = snk_kernel_int;
                     56: 
                     57:        /* Check if this is the right driver */
                     58:        if (check_driver(pciconf) < 0) {
                     59:                return 0;
                     60:        }
                     61: 
                     62:        snk_module_interface.link_addr = module_init;
                     63:        return &snk_module_interface;
                     64: }

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