source: bootcd/isolinux/syslinux-6.03/gpxe/src/arch/i386/interface/pcbios/aoeboot.c

#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <gpxe/aoe.h>
#include <gpxe/ata.h>
#include <gpxe/netdevice.h>
#include <gpxe/sanboot.h>
#include <gpxe/abft.h>
#include <int13.h>

FILE_LICENCE ( GPL2_OR_LATER );

static int aoeboot ( const char *root_path ) {
        struct ata_device *ata;
        struct int13_drive *drive;
        int rc;

        ata = zalloc ( sizeof ( *ata ) );
        if ( ! ata ) {
                rc = -ENOMEM;
                goto err_alloc_ata;
        }
        drive = zalloc ( sizeof ( *drive ) );
        if ( ! drive ) {
                rc = -ENOMEM;
                goto err_alloc_drive;
        }

        /* FIXME: ugly, ugly hack */
        struct net_device *netdev = last_opened_netdev();

        if ( ( rc = aoe_attach ( ata, netdev, root_path ) ) != 0 ) {
                printf ( "Could not attach AoE device: %s\n",
                         strerror ( rc ) );
                goto err_attach;
        }
        if ( ( rc = init_atadev ( ata ) ) != 0 ) {
                printf ( "Could not initialise AoE device: %s\n",
                         strerror ( rc ) );
                goto err_init;
        }

        /* FIXME: ugly, ugly hack */
        struct aoe_session *aoe =
                container_of ( ata->backend, struct aoe_session, refcnt );
        abft_fill_data ( aoe );

        drive->blockdev = &ata->blockdev;

        register_int13_drive ( drive );
        printf ( "Registered as BIOS drive %#02x\n", drive->drive );
        printf ( "Booting from BIOS drive %#02x\n", drive->drive );
        rc = int13_boot ( drive->drive );
        printf ( "Boot failed\n" );

        /* Leave drive registered, if instructed to do so */
        if ( keep_san() )
                return rc;

        printf ( "Unregistering BIOS drive %#02x\n", drive->drive );
        unregister_int13_drive ( drive );

 err_init:
        aoe_detach ( ata );
 err_attach:
        free ( drive );
 err_alloc_drive:
        free ( ata );
 err_alloc_ata:
        return rc;
}

struct sanboot_protocol aoe_sanboot_protocol __sanboot_protocol = {
        .prefix = "aoe:",
        .boot = aoeboot,
};