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