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/* SPDX-License-Identifier: GPL-2.0-only */
#include <stdlib.h>
#include <string.h>
#include <option.h>
#include <smmstore.h>
#include <Uefi/UefiBaseType.h>
#include "efivars.h"
static const EFI_GUID EficorebootNvDataGuid = {
0xceae4c1d, 0x335b, 0x4685, { 0xa4, 0xa0, 0xfc, 0x4a, 0x94, 0xee, 0xa0, 0x85 } };
unsigned int get_uint_option(const char *name, const unsigned int fallback)
{
struct region_device rdev;
enum cb_err ret;
uint32_t var;
uint32_t size;
if (smmstore_lookup_region(&rdev))
return fallback;
var = 0;
size = sizeof(var);
ret = efi_fv_get_option(&rdev, &EficorebootNvDataGuid, name, &var, &size);
if (ret != CB_SUCCESS)
return fallback;
return var;
}
enum cb_err set_uint_option(const char *name, unsigned int value)
{
struct region_device rdev;
uint32_t var = value;
if (smmstore_lookup_region(&rdev))
return CB_CMOS_OTABLE_DISABLED;
return efi_fv_set_option(&rdev, &EficorebootNvDataGuid, name, &var, sizeof(var));
}
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