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/*
* Copyright (C) 2001-2003 Hewlett-Packard Co.
* Contributed by Stephane Eranian <eranian@hpl.hp.com>
*
* This file is part of the ELILO, the EFI Linux boot loader.
*
* ELILO is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* ELILO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with ELILO; see the file COPYING. If not, write to the Free
* Software Foundation, 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Look at the README.devschemes for more explanations on how
* to use devschemes.
*/
#include <efi.h>
#include <efilib.h>
#include "elilo.h"
#include "fileops.h"
#define NAMING_SCHEME L"simple"
typedef struct {
INT8 type;
INT8 subtype;
INTN (*device_func)(device_t *dev, EFI_DEVICE_PATH *dp);
} devices_types_t;
static UINT32 atapi_count, scsi_count, net_count;
static INTN
atapi_device(device_t *dev, EFI_DEVICE_PATH *dp)
{
//ATAPI_DEVICE_PATH *atapi = (ATAPI_DEVICE_PATH *)dp;
dev->name[0] = L'a';
dev->name[1] = L't';
dev->name[2] = L'a';
dev->name[3] = L'p';
dev->name[4] = L'i';
SPrint(dev->name+5,FILEOPS_DEVNAME_MAXLEN-5-1, L"%d", atapi_count);
atapi_count++;
return 0;
}
static INTN
scsi_device(device_t *dev, EFI_DEVICE_PATH *dp)
{
//SCSI_DEVICE_PATH *scsi = (SCSI_DEVICE_PATH *)dp;
dev->name[0] = L's';
dev->name[1] = L'c';
dev->name[2] = L's';
dev->name[3] = L'i';
SPrint(dev->name+4, FILEOPS_DEVNAME_MAXLEN-4-1, L"%d", scsi_count);
scsi_count++;
return 0;
}
static INTN
network_device(device_t *dev, EFI_DEVICE_PATH *dp)
{
//MAC_ADDR_DEVICE_PATH *mac = (MAC_ADDR_DEVICE_PATH *)dp;
dev->name[0] = L'n';
dev->name[1] = L'e';
dev->name[2] = L't';
SPrint(dev->name+3, FILEOPS_DEVNAME_MAXLEN-3-1, L"%d", net_count);
net_count++;
return 0;
}
/*
* what we are looking for in the device path
*/
static devices_types_t dev_types[]={
{ MESSAGING_DEVICE_PATH, MSG_ATAPI_DP, atapi_device},
{ MESSAGING_DEVICE_PATH, MSG_SCSI_DP, scsi_device},
{ MESSAGING_DEVICE_PATH, MSG_MAC_ADDR_DP, network_device},
{ 0, 0 , NULL}
};
static INTN
simple_scheme(device_t *tab, UINTN n)
{
EFI_DEVICE_PATH *dp1, *dp;
devices_types_t *p;
UINTN i;
/*
* note that this test is necessary but not sufficient to guarantee that this scheme
* will work because, we have no way of detecting that the machine got actually
* rebooted if the EDD30 variable was forced. this comes from the fact, that elilo
* can be invoked once, aborted and then restarted with no machine reboot.
*
* XXX: there may be a way to detect this with the another variable which would
* be in volatile memory only
*/
if (elilo_opt.edd30_on == 0) {
VERB_PRT(4, Print(L"%s device naming scheme only works with EDD3.0 enabled\n", NAMING_SCHEME));
return -1;
}
for(i=0; i < n; i++) {
dp = DevicePathFromHandle(tab[i].dev);
if (dp == NULL) {
ERR_PRT((L"cannot get device path for device %d", i));
continue;
}
dp1 = dp = UnpackDevicePath(dp);
while (!IsDevicePathEnd(dp)) {
p = dev_types;
while (p->type) {
if ( p->type == DevicePathType(dp)
&& p->subtype == DevicePathSubType(dp)) {
(*p->device_func)(tab+i, dp);
goto done;
}
p++;
}
dp = NextDevicePathNode(dp);
}
done:
FreePool(dp1);
}
return 0;
}
devname_scheme_t simple_devname_scheme={
NAMING_SCHEME,
simple_scheme
};
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