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elilo/elilo.c

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/*
* elilo.c - IA-64/IA-32/x86_64 EFI Linux loader
*
* Copyright (C) 1999-2003 Hewlett-Packard Co.
* Contributed by David Mosberger <davidm@hpl.hp.com>.
* Contributed by Stephane Eranian <eranian@hpl.hp.com>
*
* Copyright (C) 1999-2000 VA Linux Systems
* Contributed by Johannes Erdfelt <jerdfelt@valinux.com>.
*
* Copyright (C) 2006-2009 Intel Corporation
* Contributed by Fenghua Yu <fenghua.yu@intel.com>
* Contributed by Bibo Mao <bibo.mao@intel.com>
* Contributed by Chandramouli Narayanan <mouli@linux.intel.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.
*
* Please check out the elilo.txt for complete documentation on how
* to use this program.
*/
#include <efi.h>
#include <efilib.h>
#include "elilo.h"
#include "vars.h"
#include "gzip.h"
#include "getopt.h"
#include "fileops.h"
#include "loader.h"
#include "config.h" /* for config_init() */
#define ELILO_SHARED_CMDLINE_OPTS L"pPMC:aDhd:i:m:vVc:E"
elilo_config_t elilo_opt;
EFI_SYSTEM_TABLE *systab; /* pointer to EFI system table */
extern INTN wait_timeout (UINTN);
/*
* Load the Linux kernel in memory from the boot media
* Output:
* kd = address of kernel entry point
* + end address of kernel code+data+bss
* + kernel entry point
* Return:
* ELILO_LOAD_ERROR : if something went wrong
* ELILO_LOAD_ABORTED : user interruption while loading
* ELILO_LOAD_SUCCESS : otherwise
*/
static INTN
do_kernel_load(CHAR16 *kname, kdesc_t *kd)
{
loader_ops_t *ldops;
EFI_STATUS status;
fops_fd_t fd;
status = fops_open(kname, &fd);
if (EFI_ERROR(status)) {
ERR_PRT((L"Kernel file not found %s", kname));
return ELILO_LOAD_ERROR;
}
fops_close(fd);
ldops = loader_probe(kname);
if (ldops == NULL) {
ERR_PRT((L"Cannot find a loader for %s", kname));
return ELILO_LOAD_ERROR;
}
VERB_PRT(1,Print(L"Using %s loader\n", ldops->ld_name));
return ldops->ld_load_kernel(kname, kd);
}
INTN
kernel_load(EFI_HANDLE image, CHAR16 *kname, kdesc_t *kd, memdesc_t *imem, memdesc_t *mmem)
{
CHAR16 kernel[FILENAME_MAXLEN];
/*
* Do the vm image switch here
* if there is "vmm=" then elilo should load image specified
* in "vmm=" and then give the "image" to vmm as target kernel image
*/
if (elilo_opt.vmcode[0])
StrCpy(kernel, elilo_opt.vmcode);
else
StrCpy(kernel, kname);
/*
* Now let's try to load the kernel !
*/
switch(do_kernel_load(kernel, kd)) {
case ELILO_LOAD_SUCCESS:
break;
case ELILO_LOAD_ERROR:
/* XXX: add fallback support */
return ELILO_LOAD_ERROR;
case ELILO_LOAD_ABORTED:
/* we drop initrd in case we aborted the load */
elilo_opt.initrd[0] = CHAR_NULL;
elilo_opt.vmcode[0] = CHAR_NULL;
/* will go back to interactive selection */
elilo_opt.prompt = 1;
elilo_opt.timeout = ELILO_DEFAULT_TIMEOUT;
elilo_opt.delay = 0;
return ELILO_LOAD_RETRY;
}
VERB_PRT(3, Print(L"kernel loaded in [" PTR_FMT "-" PTR_FMT "] entry=" PTR_FMT "\n",
kd->kstart, kd->kend, kd->kentry));
if (elilo_opt.initrd[0]) {
/* ramdisk image is moved to the top of available extended memory later by start_kernel() */
if (sysdeps_initrd_get_addr(kd, imem) == -1) goto exit_error;
switch(load_file(elilo_opt.initrd, imem)) {
case ELILO_LOAD_SUCCESS:
break;
case ELILO_LOAD_ERROR:
goto exit_error;
case ELILO_LOAD_ABORTED:
free_kmem();
/* we drop initrd in case we aborted the load */
elilo_opt.initrd[0] = CHAR_NULL;
elilo_opt.vmcode[0] = CHAR_NULL;
elilo_opt.prompt = 1;
elilo_opt.timeout = ELILO_DEFAULT_TIMEOUT;
elilo_opt.delay = 0;
return ELILO_LOAD_RETRY;
}
}
if (elilo_opt.vmcode[0]) {
mmem->start_addr = 0; /* let the allocator decide */
switch(load_file(kname, mmem)) {
case ELILO_LOAD_SUCCESS:
break;
case ELILO_LOAD_ERROR:
goto exit_error;
case ELILO_LOAD_ABORTED:
if (imem->start_addr)
free(imem->start_addr);
free_kmem();
/* we drop initrd in case we aborted the load */
elilo_opt.initrd[0] = CHAR_NULL;
elilo_opt.vmcode[0] = CHAR_NULL;
elilo_opt.prompt = 1;
elilo_opt.timeout = ELILO_DEFAULT_TIMEOUT;
elilo_opt.delay = 0;
return ELILO_LOAD_RETRY;
}
/* Test for a compressed image and unzip if found */
if (gzip_probe(mmem->start_addr, mmem->size) == 0 &&
gunzip_image(mmem) != ELILO_LOAD_SUCCESS) {
if (imem->start_addr)
free(imem->start_addr);
free(mmem->start_addr);
free_kmem();
/* we drop initrd in case we aborted the load */
elilo_opt.initrd[0] = CHAR_NULL;
elilo_opt.vmcode[0] = CHAR_NULL;
elilo_opt.prompt = 1;
elilo_opt.timeout = ELILO_DEFAULT_TIMEOUT;
elilo_opt.delay = 0;
return ELILO_LOAD_RETRY;
}
}
return ELILO_LOAD_SUCCESS;
exit_error:
free_kmem();
if (imem->start_addr) free(imem->start_addr);
if (mmem->start_addr) free(mmem->start_addr);
return ELILO_LOAD_ERROR;
}
static INTN
main_loop(EFI_HANDLE dev, CHAR16 **argv, INTN argc, INTN index, EFI_HANDLE image)
{
CHAR16 kname[FILENAME_MAXLEN];
CHAR16 cmdline_tmp[CMDLINE_MAXLEN];
CHAR16 cmdline[CMDLINE_MAXLEN];
VOID *bp;
UINTN cookie;
EFI_STATUS status = EFI_SUCCESS;
kdesc_t kd;
memdesc_t imem, mmem;
INTN r, retries=0;
/*
* First place where we potentially do system dependent
* operations. It is a one time opportunity before entering
* the main loop
*/
if (sysdeps_preloop_actions(dev, argv, argc, index, image) == -1) return -1;
for(;;) {
kname[0] = cmdline_tmp[0] = cmdline[0] = CHAR_NULL;
imem.start_addr = 0; imem.pgcnt = 0; imem.size = 0;
elilo_opt.sys_img_opts = NULL;
if (kernel_chooser(argv, argc, index, kname, cmdline_tmp) == -1) goto exit_error;
switch (kernel_load(image, kname, &kd, &imem, &mmem)) {
case ELILO_LOAD_SUCCESS:
goto do_launch;
case ELILO_LOAD_ERROR:
goto exit_error;
/* otherwise we retry ! */
}
}
do_launch:
r = subst_vars(cmdline_tmp, cmdline, CMDLINE_MAXLEN);
VERB_PRT(3, Print(L"final cmdline(%d): %s\n", r, cmdline));
/* Give user time to see the output before launch */
if (elilo_opt.debug || elilo_opt.verbose) {
r = wait_timeout(150);
/* have to turn off all console output(except error output) now before final get_mmemap()
* call or it can cause the efi map key to change and the ExitBootSvc call to fail,
* forcing debug and verbose options off is the surest way to enforce this.
*/
elilo_opt.debug=0;
elilo_opt.verbose=0;
}
/* free resources associated with file accesses (before ExitBootServices) */
close_devices();
/* No console output permitted after create_boot_params()! */
if ((bp=create_boot_params(cmdline, &imem, &mmem, &cookie)) == 0) goto error;
/* terminate bootservices
* efi ExitBootSvcs spec: *note, get_memmap is called by create_boot_params()
* An EFI OS loader must ensure that it has the system's current memory map at the time
* it calls ExitBootServices(). This is done by passing in the current memory map's
* MapKey value as returned by GetMemoryMap(). Care must be taken to ensure that the
* memory map does not change between these two calls. It is suggested that
* GetMemoryMap()be called immediately before calling ExitBootServices(). */
retry:
status = uefi_call_wrapper(BS->ExitBootServices, 2, image, cookie);
if (EFI_ERROR(status))
{
ERR_PRT((L"\nExitBootSvcs: failed, memory map has changed.\n"));
if (retries < 2)
{
ERR_PRT((L"Main_Loop: Retrying,... have to rebuild boot params"));
retries++;
free_boot_params(bp);
if ((bp=create_boot_params(cmdline, &imem, &mmem, &cookie)) == 0) goto error;
goto retry;
} else {
ERR_PRT((L"\nMain_Loop: tried ExitBootSvcs 3 times... retries exceeded.... giving up\n"));
goto bad_exit;
}
}
start_kernel(kd.kentry, bp);
/* NOT REACHED */
ERR_PRT((L"start_kernel() return !"));
bad_exit:
/*
* we are still in BootService mode
*/
ERR_PRT((L"ExitBootServices failed %r", status));
error:
free_kmem();
if (imem.start_addr) free(imem.start_addr);
if (mmem.start_addr) free(mmem.start_addr);
if (bp) free_boot_params(bp);
exit_error:
return ELILO_LOAD_ERROR;
}
static VOID
elilo_help(VOID)
{
Print(L"-d secs timeout in 10th of second before booting\n");
Print(L"-h this help text\n");
Print(L"-V print version\n");
Print(L"-v verbose level(can appear multiple times)\n");
Print(L"-a always check for alternate kernel image\n");
Print(L"-i file load file as the initial ramdisk\n");
Print(L"-m file load file as additional boot time vmm module\n");
Print(L"-C file indicate the config file to use\n");
Print(L"-P parse config file only (verify syntax)\n");
Print(L"-D enable debug prints\n");
Print(L"-p force interactive mode\n");
Print(L"-c name image chooser to use\n");
Print(L"-E do not force EDD30 variable\n");
sysdeps_print_cmdline_opts();
Print(L"\n");
print_config_options();
}
/*
* XXX: hack to work around a problem with EFI command line argument when booted
* from network. In this case, it looks like LoadOptions/LoadOptionsSize contain
* garbage
*/
static CHAR16 *default_load_options;
static UINTN default_load_options_size;
static INTN done_fixups;
static VOID
fixupargs(EFI_LOADED_IMAGE *info)
{
EFI_STATUS status;
EFI_PXE_BASE_CODE *pxe;
#define FAKE_ELILONAME L"elilo-forced"
status = uefi_call_wrapper(BS->HandleProtocol, 3, info->DeviceHandle, &PxeBaseCodeProtocol, (VOID **)&pxe);
if (EFI_ERROR(status)) return;
default_load_options = info->LoadOptions;
default_load_options_size = info->LoadOptionsSize;
info->LoadOptions = FAKE_ELILONAME;
info->LoadOptionsSize = StrLen(info->LoadOptions)*sizeof(CHAR16);
done_fixups = 1;
}
/*
* we restore the arguments in case we modified them just to make sure
* we don't confuse caller.
*/
static VOID
unfixupargs(EFI_LOADED_IMAGE *info)
{
if (done_fixups == 0) return;
info->LoadOptions = default_load_options;
info->LoadOptionsSize = default_load_options_size;
}
/*
* in order to get fully detailed EFI path names to devices, EDD3.0 specification must
* be turned on. On new versions of EFI, this is the default. An environment variable
* called EDD30 reflects the current settings. If true, then EDD3.0 is enabled
* and device path names show the detailed device types. If false, then a default
* generic name is used instead. This has some implications of ELILO's ability to
* provide a better naming scheme for detected devices. If EDD3.0 is enabled
* then much more precise names can be used which makes it easy to use.
* If EDD3.0 is nont enabled, ELILO will still work but will use very generic names
* for devices.
*
* ELILO will check the value of the variable. If not true, then it will force it to
* true. This will require a reboot for EFI to make use of the new value.
* Return:
* EFI_SUCCESS: if variable is already true or was set to true
* EFI error code: otherwise, like when could not forced variable or unrecognized variable content
*/
#define EDD30_GUID \
{0x964e5b21, 0x6459, 0x11d2, { 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b}}
#define EDD30_ATTR (EFI_VARIABLE_RUNTIME_ACCESS|EFI_VARIABLE_BOOTSERVICE_ACCESS|EFI_VARIABLE_NON_VOLATILE)
static EFI_GUID edd30_guid = EDD30_GUID;
static INTN
check_edd30(VOID)
{
EFI_STATUS status;
UINTN l = sizeof(BOOLEAN);
UINT8 bool = FALSE;
INTN ret = -1;
status = uefi_call_wrapper(RT->GetVariable, 5, L"EDD30", &edd30_guid, NULL, &l, &bool);
if (status == EFI_BUFFER_TOO_SMALL || (bool != TRUE && bool != FALSE)) {
ERR_PRT((L"Warning: EDD30 EFI variable is not boolean value: forcing it to TRUE"));
return -1;
}
if (status == EFI_SUCCESS && bool == TRUE) {
VERB_PRT(3, Print(L"EDD30 is TRUE\n"));
elilo_opt.edd30_on = TRUE;
ret = 0;
} else {
VERB_PRT(4,
if (status != EFI_SUCCESS) {
Print(L"EDD30 EFI variable not defined\n");
} else {
Print(L"EDD30 EFI variable is false\n");
}
);
}
return ret;
}
static INTN
force_edd30(VOID)
{
EFI_STATUS status;
UINTN l = sizeof(BOOLEAN);
UINT8 bool;
bool = TRUE;
status = uefi_call_wrapper(RT->SetVariable, 5, L"EDD30", &edd30_guid, EDD30_ATTR, l, &bool);
if (EFI_ERROR(status)) {
ERR_PRT((L"can't set EDD30 variable: ignoring it"));
return -1;
}
VERB_PRT(3, Print(L"EDD30 variable forced to TRUE. You should reboot to take advantage of EDD3.0.\n"));
return 0;
}
/*
* That's equivalent of main(): main entry point
*/
EFI_STATUS
efi_main (EFI_HANDLE image, EFI_SYSTEM_TABLE *system_tab)
{
CHAR16 *argv[MAX_ARGS];
CHAR16 optstring[MAX_ARGS];
EFI_LOADED_IMAGE *info;
EFI_STATUS status, ret = EFI_LOAD_ERROR;
INTN argc = 0, c;
INTN edd30_status, retry;
CHAR16 *ptr, *arglist = NULL;
BOOLEAN devices_initialized = FALSE;
CHAR16 dpath[FILENAME_MAXLEN];
CHAR16 *devpath;
elilo_opt.verbose=0;
elilo_opt.debug=0;
/* initialize global variable */
systab = system_tab;
/* initialize EFI library */
InitializeLib(image, systab);
/*
* disable the platform watchdog timer if we go interactive
* XXX: we should reinstate it once we're done
* It seems like with PXE, the timer is set to a few minutes
* and sometimes triggers if we stay too long in interactive
* mode.
* XXX: clean this up !
*/
uefi_call_wrapper(BS->SetWatchdogTimer, 4, 0, 0x0, 0, NULL);
/*
* start a clean console
*/
uefi_call_wrapper(systab->ConOut->Reset, 2, systab->ConOut, FALSE);
/* initialize memory allocator */
if (alloc_init() == -1) return EFI_LOAD_ERROR;
status = uefi_call_wrapper(BS->HandleProtocol, 3, image, &LoadedImageProtocol, (VOID **) &info);
if (EFI_ERROR(status)) {
ERR_PRT((L"image handle does not support LOADED_IMAGE protocol"));
return EFI_LOAD_ERROR;
}
VERB_PRT(5,Print(L"Loaded at " PTR_FMT " size=%ld bytes code=%d data=%d\n", info->ImageBase, info->ImageSize, info->ImageCodeType, info->ImageDataType));
/*
* verify EDD3.0 status. Users may have to reboot
*/
edd30_status = check_edd30();
/*
* initialize configuration empire
*/
if (config_init() == -1) goto do_exit;
/*
* architecture-specific initializations
*/
if (sysdeps_init(info->DeviceHandle) == -1) goto do_exit;
if (sysdeps_register_options() == -1) goto do_exit;
/*
* This may be required in case Elilo was booted with absolutely no arguments
* Elilo's logic is that just like normal Linux programs at least one argument
* (argv[0]) exists at all times and that it usually gives the name of the program
* (the command used to start it).
ERR_PRT((L"LoadOptions=%x OpenSize=%d", info->LoadOptions, info->LoadOptionsSize));
*/
/*
* in case there is something wrong with the default boot_device
* we default to basic fixups and we need to force interactive
* mode to make sure the user has a chance of specifying a kernel
*/
fixupargs(info);
#if 0
Print(L"LoadOptions=%x OpenSize=%d\n", info->LoadOptions, info->LoadOptionsSize);
{ INTN i; for (i=0; i< info->LoadOptionsSize>>1; i++) Print(L"options[%d]=%d (%c)\n", i, ((CHAR16 *)info->LoadOptions)[i], ((CHAR16 *)info->LoadOptions)[i]); }
#endif
/*
* we must copy argument because argify modifies the string.
* This caused problems when arguments are coming from NVRAM
* as passed by the EFI boot manager
*
* We add an extra character to the buffer in case the LoadOptions is not
* NULL terminated. The extra space will be used to ADD the extra terminator.
*/
arglist = alloc(info->LoadOptionsSize+sizeof(CHAR16), EfiLoaderData);
if (arglist == NULL) {
ERR_PRT((L"cannot copy argument list"));
return EFI_OUT_OF_RESOURCES;
}
Memcpy(arglist, info->LoadOptions, info->LoadOptionsSize);
argc = argify(arglist,info->LoadOptionsSize, argv);
StrCpy(optstring, ELILO_SHARED_CMDLINE_OPTS);
StrCat(optstring, sysdeps_get_cmdline_opts());
while ((c=Getopt(argc, argv, optstring)) != -1 ) {
switch(c) {
case 'a':
elilo_opt.alt_check = 1;
break;
case 'D':
elilo_opt.debug = 1;
break;
case 'p':
elilo_opt.prompt = 1;
break;
case 'v':
elilo_opt.verbose++;
if (elilo_opt.verbose > 5) elilo_opt.verbose = 5;
break;
case 'h':
elilo_help();
ret = EFI_SUCCESS;
goto do_exit;
case 'd':
/*
* zero is a valid value here, so we use the delay-set to mark the
* fact that the user specified a value on cmdline. See config.c
*/
elilo_opt.delay = Atoi(Optarg);
elilo_opt.delay_set = 1;
break;
case 'E':
/* don't force EDD30 EFI variable if not already set */
elilo_opt.edd30_no_force = 1;
break;
case 'i':
if (StrLen(Optarg) >= FILENAME_MAXLEN-1) {
Print(L"initrd filename is limited to %d characters\n", FILENAME_MAXLEN);
goto do_exit;
}
StrCpy(elilo_opt.initrd, Optarg);
break;
case 'm':
if (StrLen(Optarg) >= FILENAME_MAXLEN-1) {
Print(L"vmm module filename is limited to %d characters\n", FILENAME_MAXLEN);
goto do_exit;
}
StrCpy(elilo_opt.vmcode, Optarg);
break;
case 'C':
if (StrLen(Optarg) >= FILENAME_MAXLEN-1) {
Print(L"config filename is limited to %d characters\n", FILENAME_MAXLEN);
goto do_exit;
}
StrCpy(elilo_opt.config, Optarg);
break;
case 'M': /* builtin debug tool */
{ mmap_desc_t mdesc;
if (get_memmap(&mdesc) == -1) {
Print(L"Cannot get memory map\n");
return EFI_LOAD_ERROR;
}
print_memmap(&mdesc);
ret = EFI_SUCCESS;
goto do_exit;
}
case 'V':
Print(L"ELILO v%s for EFI/%a\n", ELILO_VERSION, ELILO_ARCH);
ret = EFI_SUCCESS;
goto do_exit;
case 'P':
/* cmdline only option */
elilo_opt.parse_only = 1;
break;
case 'c':
if (StrLen(Optarg) >= FILENAME_MAXLEN-1) {
Print(L"chooser name is limited to %d characters\n", FILENAME_MAXLEN);
goto do_exit;
}
StrCpy(elilo_opt.chooser, Optarg);
break;
default:
/*
* try system dependent options before declaring error
*/
if (sysdeps_getopt(c, Optind, Optarg) == 0) continue;
Print(L"Unknown option -%c\n", (CHAR16)c);
goto do_exit;
}
}
DBG_PRT((L"Optind=%d optarg=" PTR_FMT " argc=%d", Optind, Optarg, argc));
/*
* we can't defer this phase any longer...
* Must be done after the elilo_opt are initialized (at least partially)
*/
if (init_devices(info->DeviceHandle) == -1) goto do_exit;
devices_initialized = TRUE;
devpath = DevicePathToStr(info->FilePath);
/*
* set per fileops defaults files for configuration and kernel
*/
fops_setdefaults(elilo_opt.default_configs, elilo_opt.default_kernel, FILENAME_MAXLEN, devpath);
/*
* XXX: won't be visible if verbose not required from command line
*/
VERB_PRT(2,Print(L"Default config: %s\nDefault_kernel: %s\n",
elilo_opt.default_configs[0].fname, elilo_opt.default_kernel));
/*
* use default config file if not specified by user
*/
ptr = elilo_opt.config[0] == CHAR_NULL ? (retry=1,elilo_opt.default_configs[0].fname) : (retry=0,elilo_opt.config);
/*
* parse config file (verbose becomes visible if set)
*/
ret = read_config(ptr);
VERB_PRT(1,Print(L"read_config=%r\n", ret));
/* Only try the default config filenames if user did not specify a
* config filename on the command line */
if (elilo_opt.config[0] == CHAR_NULL) {
while ((ret != EFI_SUCCESS) &&
(retry < MAX_DEFAULT_CONFIGS) &&
(elilo_opt.default_configs[retry].fname[0] != CHAR_NULL)) {
ptr = elilo_opt.default_configs[retry].fname;
ret = read_config(ptr);
VERB_PRT(1,Print(L"read_config=%r\n", ret));
retry += 1;
}
}
/*
* when the config file is not found, we fail only if:
* - the user did not specified interactive mode
* - the user did not explicitely specify the config file
*/
if (ret == EFI_NOT_FOUND || ret == EFI_TFTP_ERROR) {
if (elilo_opt.prompt == 0 && elilo_opt.config[0] != CHAR_NULL) {
Print(L"config file %s not found\n", ptr);
goto do_exit;
}
fops_getdefault_path(dpath, FILENAME_MAXLEN);
if (ret == EFI_TFTP_ERROR)
Print(L"no config file found on TFTP server in %s\n", dpath);
else
Print(L"no config file found in %s\n", dpath);
}
/*
* stop if just doing parsing
*/
if (elilo_opt.parse_only) {
if (ret == EFI_SUCCESS)
Print(L"Config file %s parsed successfully\n", ptr);
goto do_exit;
}
/*
* if there was an error when parsing the config file, then
* we force interactive mode to give a chance to the user.
* We also clear the error.
*/
if (ret != EFI_SUCCESS) {
Print(L"forcing interactive mode due to config file error(s)\n");
elilo_opt.prompt = 1;
}
/*
* However, if the user specified a kernel on the command line
* then we don't go to interactive mode, even if there was an option in
* the config file telling us to do so.
*/
if (argc > Optind) {
elilo_opt.prompt = 0;
}
/*
* If EDD30 EFI variable was not set to TRUE (or not defined), we
* we try to force it. This will take effect at the next reboot.
*
* Some controllers don't have EDD30 support, in this case forcing it
* may cause problems, therefore we check the edd_no_force option
* before making the call.
*/
if (edd30_status == -1 && elilo_opt.edd30_no_force == 0) {
force_edd30();
}
ret = EFI_LOAD_ERROR;
/* set default timeout if going interactive */
if ((elilo_opt.prompt && elilo_opt.timeout == 0)) {
elilo_opt.timeout = ELILO_DEFAULT_TIMEOUT;
}
/*
* which chooser we will use
*/
if (init_chooser(info->DeviceHandle) == -1) {
ERR_PRT((L"Cannot find a decent chooser\n"));
goto do_exit;
}
//if (elilo_opt.prompt == 0) VERB_PRT(1, print_devices());
main_loop(info->DeviceHandle, argv, argc, Optind, image);
/* should not return */
do_exit:
unfixupargs(info);
//if (arglist) free(arglist);
/* free all resources assiocated with file accesses */
if (devices_initialized) close_devices();
/* garbage collect all remaining allocations */
free_all_memory();
return ret;
}
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