2 * Copyright (c) 2018 Netflix, Inc.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
34 static EFI_GUID FreeBSDBootVarGUID = FREEBSD_BOOT_VAR_GUID;
35 static EFI_GUID GlobalBootVarGUID = EFI_GLOBAL_VARIABLE;
38 efi_getenv(EFI_GUID *g, const char *v, void *data, size_t *len)
47 if (utf8_to_ucs2(v, &uv, &ul) != 0)
48 return (EFI_OUT_OF_RESOURCES);
50 rv = RS->GetVariable(uv, g, &attr, &dl, data);
51 if (rv == EFI_SUCCESS || rv == EFI_BUFFER_TOO_SMALL)
58 efi_global_getenv(const char *v, void *data, size_t *len)
61 return (efi_getenv(&GlobalBootVarGUID, v, data, len));
65 efi_freebsd_getenv(const char *v, void *data, size_t *len)
68 return (efi_getenv(&FreeBSDBootVarGUID, v, data, len));
72 efi_setenv_freebsd_wcs(const char *varname, CHAR16 *valstr)
78 if (utf8_to_ucs2(varname, &var, &len) != 0)
79 return (EFI_OUT_OF_RESOURCES);
80 rv = RS->SetVariable(var, &FreeBSDBootVarGUID,
81 EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
82 (ucs2len(valstr) + 1) * sizeof(efi_char), valstr);