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#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <byteswap.h>
#include <gpxe/aoe.h>
#include <gpxe/ata.h>
#include <gpxe/netdevice.h>
#include <gpxe/dhcp.h>
#include <gpxe/abft.h>
#include <int13.h>
#include <usr/aoeboot.h>
/**
* AoE boot information block
*
* Must be placed at 40:f0.
*
* This structure needs to be replaced by an ACPI table or similar.
*/
struct aoe_boot_info {
/** Must be 0x01 */
uint8_t one;
/** Client MAC address */
uint8_t client[ETH_ALEN];
/** Server MAC address */
uint8_t server[ETH_ALEN];
/** Shelf number */
uint16_t shelf;
/** Slot number */
uint8_t slot;
} __attribute__ (( packed ));
/**
* Guess boot network device
*
* @ret netdev Boot network device
*/
static struct net_device * guess_boot_netdev ( void ) {
struct net_device *boot_netdev;
/* Just use the first network device */
for_each_netdev ( boot_netdev ) {
return boot_netdev;
}
return NULL;
}
int aoeboot ( const char *root_path ) {
struct ata_device ata;
struct int13_drive drive;
int rc;
memset ( &ata, 0, sizeof ( ata ) );
memset ( &drive, 0, sizeof ( drive ) );
printf ( "AoE booting from %s\n", root_path );
/* FIXME: ugly, ugly hack */
struct net_device *netdev = guess_boot_netdev();
if ( ( rc = aoe_attach ( &ata, netdev, root_path ) ) != 0 ) {
printf ( "Could not attach AoE device: %s\n",
strerror ( rc ) );
goto error_attach;
}
if ( ( rc = init_atadev ( &ata ) ) != 0 ) {
printf ( "Could not initialise AoE device: %s\n",
strerror ( rc ) );
goto error_init;
}
/* FIXME: ugly, ugly hack */
struct aoe_session *aoe =
container_of ( ata.backend, struct aoe_session, refcnt );
struct aoe_boot_info boot_info;
boot_info.one = 0x01;
memcpy ( boot_info.client, netdev->ll_addr,
sizeof ( boot_info.client ) );
memcpy ( boot_info.server, aoe->target,
sizeof ( boot_info.server ) );
boot_info.shelf = htons ( aoe->major );
boot_info.slot = aoe->minor;
copy_to_real ( 0x40, 0xf0, &boot_info, sizeof ( boot_info ) );
abft_fill_data ( aoe );
drive.drive = find_global_dhcp_num_option ( DHCP_EB_BIOS_DRIVE );
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" );
printf ( "Unregistering BIOS drive %#02x\n", drive.drive );
unregister_int13_drive ( &drive );
error_init:
aoe_detach ( &ata );
error_attach:
return rc;
}
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