Implement UEFI set environment variable, as well as exporting the EFI
version. This is also scriptable, though additional scripting will be needed. Differential Review: https://reviews.freebsd.org/D4494 MFC After: 3 days
This commit is contained in:
parent
d437521495
commit
53ff4bbc05
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=300081
@ -4,7 +4,7 @@ LIB= efi
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INTERNALLIB=
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WARNS?= 2
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SRCS= delay.c efi_console.c efinet.c efipart.c errno.c handles.c \
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SRCS= delay.c efi_console.c efinet.c efipart.c env.c errno.c handles.c \
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libefi.c time.c
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.if ${MACHINE_CPUARCH} == "aarch64"
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55
sys/boot/efi/libefi/env.c
Normal file
55
sys/boot/efi/libefi/env.c
Normal file
@ -0,0 +1,55 @@
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/*
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* Copyright (c) 2015 Netflix, Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <efi.h>
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#include <efilib.h>
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/*
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* Simple wrappers to the underlying UEFI functions.
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* See http://wiki.phoenix.com/wiki/index.php/EFI_RUNTIME_SERVICES
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* for details.
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*/
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EFI_STATUS
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efi_get_next_variable_name(UINTN *variable_name_size, CHAR16 *variable_name, EFI_GUID *vendor_guid)
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{
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return RS->GetNextVariableName(variable_name_size, variable_name, vendor_guid);
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}
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EFI_STATUS
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efi_get_variable(CHAR16 *variable_name, EFI_GUID *vendor_guid, UINT32 *attributes, UINTN *data_size,
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void *data)
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{
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return RS->GetVariable(variable_name, vendor_guid, attributes, data_size, data);
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}
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EFI_STATUS
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efi_set_variable(CHAR16 *variable_name, EFI_GUID *vendor_guid, UINT32 attributes, UINTN data_size,
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void *data)
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{
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return RS->SetVariable(variable_name, vendor_guid, attributes, data_size, data);
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}
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@ -38,6 +38,8 @@ __FBSDID("$FreeBSD$");
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#include <efi.h>
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#include <efilib.h>
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#include <uuid.h>
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#include <bootstrap.h>
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#include <smbios.h>
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@ -336,11 +338,8 @@ main(int argc, CHAR16 *argv[])
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printf("Image base: 0x%lx\n", (u_long)img->ImageBase);
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printf("EFI version: %d.%02d\n", ST->Hdr.Revision >> 16,
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ST->Hdr.Revision & 0xffff);
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printf("EFI Firmware: ");
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/* printf doesn't understand EFI Unicode */
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ST->ConOut->OutputString(ST->ConOut, ST->FirmwareVendor);
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printf(" (rev %d.%02d)\n", ST->FirmwareRevision >> 16,
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ST->FirmwareRevision & 0xffff);
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printf("EFI Firmware: %S (rev %d.%02d)\n", ST->FirmwareVendor,
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ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
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printf("\n");
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printf("%s, Revision %s\n", bootprog_name, bootprog_rev);
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@ -394,6 +393,9 @@ main(int argc, CHAR16 *argv[])
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}
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}
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snprintf(var, sizeof(var), "%d.%02d", ST->Hdr.Revision >> 16,
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ST->Hdr.Revision & 0xffff);
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env_setenv("efi-version", EV_VOLATILE, var, env_noset, env_nounset);
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setenv("LINES", "24", 1); /* optional */
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for (k = 0; k < ST->NumberOfTableEntries; k++) {
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@ -409,6 +411,19 @@ main(int argc, CHAR16 *argv[])
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return (EFI_SUCCESS); /* keep compiler happy */
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}
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/* XXX move to lib stand ? */
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static int
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wcscmp(CHAR16 *a, CHAR16 *b)
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{
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while (*a && *b && *a == *b) {
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a++;
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b++;
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}
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return *a - *b;
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}
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COMMAND_SET(reboot, "reboot", "reboot the system", command_reboot);
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static int
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@ -616,6 +631,7 @@ command_mode(int argc, char *argv[])
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}
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/* deprecated */
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COMMAND_SET(nvram, "nvram", "get or set NVRAM variables", command_nvram);
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static int
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@ -718,6 +734,186 @@ command_reloadbe(int argc, char *argv[])
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}
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#endif
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COMMAND_SET(efishow, "efi-show", "print some or all EFI variables", command_efi_printenv);
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static int
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efi_print_var(CHAR16 *varnamearg, EFI_GUID *matchguid, int lflag)
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{
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UINTN datasz;
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EFI_STATUS status;
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UINT32 attr;
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CHAR16 *data;
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char *str;
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uint32_t uuid_status;
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datasz = 0;
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status = RS->GetVariable(varnamearg, matchguid, &attr,
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&datasz, NULL);
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if (status != EFI_BUFFER_TOO_SMALL) {
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printf("Can't get the variable: error %#lx\n", status);
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return (CMD_ERROR);
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}
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data = malloc(datasz);
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status = RS->GetVariable(varnamearg, matchguid, &attr,
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&datasz, data);
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if (status != EFI_SUCCESS) {
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printf("Can't get the variable: error %#lx\n", status);
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return (CMD_ERROR);
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}
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uuid_to_string((uuid_t *)matchguid, &str, &uuid_status);
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printf("%s %S=%S\n", str, varnamearg, data);
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free(str);
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free(data);
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return (CMD_OK);
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}
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static int
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command_efi_printenv(int argc, char *argv[])
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{
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/*
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* efi-printenv [-a]
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* print all the env
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* efi-printenv -u UUID
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* print all the env vars tagged with UUID
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* efi-printenv -v var
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* search all the env vars and print the ones matching var
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* eif-printenv -u UUID -v var
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* eif-printenv UUID var
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* print all the env vars that match UUID and var
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*/
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/* XXX We assume EFI_GUID is the same as uuid_t */
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int aflag = 0, gflag = 0, lflag = 0, vflag = 0;
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int ch;
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unsigned i;
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EFI_STATUS status;
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EFI_GUID varguid = { 0,0,0,{0,0,0,0,0,0,0,0} };
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EFI_GUID matchguid = { 0,0,0,{0,0,0,0,0,0,0,0} };
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uint32_t uuid_status;
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CHAR16 varname[128];
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CHAR16 varnamearg[128];
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UINTN varsz;
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while ((ch = getopt(argc, argv, "ag:lv:")) != -1) {
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switch (ch) {
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case 'a':
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aflag = 1;
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break;
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case 'g':
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gflag = 1;
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uuid_from_string(optarg, (uuid_t *)&matchguid,
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&uuid_status);
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if (uuid_status != uuid_s_ok) {
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printf("uid %s could not be parsed\n", optarg);
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return (CMD_ERROR);
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}
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break;
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case 'l':
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lflag = 1;
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break;
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case 'v':
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vflag = 1;
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if (strlen(optarg) >= nitems(varnamearg)) {
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printf("Variable %s is longer than %zd characters\n",
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optarg, nitems(varnamearg));
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return (CMD_ERROR);
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}
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for (i = 0; i < strlen(optarg); i++)
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varnamearg[i] = optarg[i];
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varnamearg[i] = 0;
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default:
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printf("Invalid argument %c\n", ch);
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return (CMD_ERROR);
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}
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}
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if (aflag && (gflag || vflag)) {
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printf("-a isn't compatible with -v or -u\n");
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return (CMD_ERROR);
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}
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if (aflag && optind < argc) {
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printf("-a doesn't take any args");
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return (CMD_ERROR);
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}
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if (optind == argc)
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aflag = 1;
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argc -= optind;
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argv += optind;
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if (vflag && gflag)
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return efi_print_var(varnamearg, &matchguid, lflag);
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if (argc == 2) {
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optarg = argv[0];
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if (strlen(optarg) >= nitems(varnamearg)) {
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printf("Variable %s is longer than %zd characters\n",
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optarg, nitems(varnamearg));
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return (CMD_ERROR);
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}
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for (i = 0; i < strlen(optarg); i++)
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varnamearg[i] = optarg[i];
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varnamearg[i] = 0;
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optarg = argv[1];
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uuid_from_string(optarg, (uuid_t *)&matchguid,
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&uuid_status);
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if (uuid_status != uuid_s_ok) {
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printf("uid %s could not be parsed\n", optarg);
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return (CMD_ERROR);
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}
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return efi_print_var(varnamearg, &matchguid, lflag);
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}
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if (argc != 0) {
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printf("Too many args\n");
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return (CMD_ERROR);
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}
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/*
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* Initiate the search -- note the standard takes pain
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* to specify the initial call must be a poiner to a NULL
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* character.
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*/
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varsz = nitems(varname);
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varname[0] = 0;
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status = RS->GetNextVariableName(&varsz, varname, &varguid);
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while (status != EFI_NOT_FOUND) {
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status = RS->GetNextVariableName(&varsz, varname,
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&varguid);
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if (aflag) {
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efi_print_var(varname, &varguid, lflag);
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continue;
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}
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if (vflag) {
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if (wcscmp(varnamearg, varname) == 0)
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efi_print_var(varname, &varguid, lflag);
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}
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if (gflag) {
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if (memcmp(&varguid, &matchguid, sizeof(varguid)) == 0)
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efi_print_var(varname, &varguid, lflag);
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}
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}
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return (CMD_OK);
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}
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COMMAND_SET(efiset, "efi-set", "set EFI variables", command_efi_set);
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static int
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command_efi_set(int argc, char *argv[])
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{
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return (CMD_OK);
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}
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COMMAND_SET(efiunset, "efi-unset", "delete / unset EFI variables", command_efi_unset);
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static int
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command_efi_unset(int argc, char *argv[])
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{
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return (CMD_OK);
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}
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#ifdef LOADER_FDT_SUPPORT
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extern int command_fdt_internal(int argc, char *argv[]);
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|
207
sys/boot/ficl/efi.c
Normal file
207
sys/boot/ficl/efi.c
Normal file
@ -0,0 +1,207 @@
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/*-
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* Copyright (c) 2014 Netflix, Inc
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*******************************************************************
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** e f i . c
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** Additional words for EFI
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**
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*******************************************************************/
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#ifdef TESTMAIN
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#else
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#include <stand.h>
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#endif
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#include "bootstrap.h"
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#include <string.h>
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#include "ficl.h"
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/*
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* FreeBSD's loader interaction words and extras
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*
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* efi-setenv ( value n name n guid n attr -- 0 | -1)
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* efi-getenv ( guid n addr n -- addr' n' | -1 )
|
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* efi-unsetenv ( name n guid n'' -- )
|
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*/
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|
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/*
|
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* efi-setenv
|
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* efi-setenv ( value n name n guid n attr -- 0 | -1)
|
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*
|
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* Set environment variables using the SetVariable EFI runtime service.
|
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*
|
||||
* Value and guid are passed through in binary form (so guid needs to be
|
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* converted to binary form from its string form). Name is converted from
|
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* ASCII to CHAR16. Since ficl doesn't have support for internationalization,
|
||||
* there's no native CHAR16 interface provided.
|
||||
*
|
||||
* attr is an int in the bitmask of the following attributes for this variable.
|
||||
*
|
||||
* 1 Non volatile
|
||||
* 2 Boot service access
|
||||
* 4 Run time access
|
||||
* (corresponding to the same bits in the UEFI spec).
|
||||
*/
|
||||
void
|
||||
ficlEfiSetenv(FICL_VM *pVM)
|
||||
{
|
||||
#ifndef TESTMAIN
|
||||
char *value, *guid;
|
||||
CHAR16 *name
|
||||
int i;
|
||||
#endif
|
||||
char *namep, *valuep, *guidp;
|
||||
int names, values, guids, attr;
|
||||
|
||||
#if FICL_ROBUST > 1
|
||||
vmCheckStack(pVM, 6, 0);
|
||||
#endif
|
||||
attr = stackPopINT(pVM->pStack);
|
||||
guids = stackPopINT(pVM->pStack);
|
||||
guidp = (char*)stackPopPtr(pVM->pStack);
|
||||
names = stackPopINT(pVM->pStack);
|
||||
namep = (char*)stackPopPtr(pVM->pStack);
|
||||
values = stackPopINT(pVM->pStack);
|
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valuep = (char*)stackPopPtr(pVM->pStack);
|
||||
|
||||
#ifndef TESTMAIN
|
||||
guid = (char*)ficlMalloc(guids);
|
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if (guid != NULL)
|
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vmThrowErr(pVM, "Error: out of memory");
|
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memcpy(guid, guidp, guids);
|
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|
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name = (char*)ficlMalloc((names + 1) * sizeof(CHAR16));
|
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if (name == NULL)
|
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vmThrowErr(pVM, "Error: out of memory");
|
||||
for (i = 0; i < names; i++)
|
||||
name[i] = namep[i];
|
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name[names] = (CHAR16)0;
|
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|
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value = (char*)ficlMalloc(values + 1);
|
||||
if (value != NULL)
|
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vmThrowErr(pVM, "Error: out of memory");
|
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memcpy(value, valuep, values);
|
||||
|
||||
status = efi_set_variable(name, guid, attr, value);
|
||||
if (status == EFI_SUCCESS)
|
||||
stackPushINT(pVM->pStack, 0);
|
||||
else
|
||||
stackPushINT(pVM->pStack, -1);
|
||||
|
||||
ficlFree(name);
|
||||
ficlFree(value);
|
||||
ficlFree(guid);
|
||||
#endif
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
void
|
||||
ficlEfiGetenv(FICL_VM *pVM)
|
||||
{
|
||||
#ifndef TESTMAIN
|
||||
char *name, *value;
|
||||
#endif
|
||||
char *namep;
|
||||
int names;
|
||||
|
||||
#if FICL_ROBUST > 1
|
||||
vmCheckStack(pVM, 2, 2);
|
||||
#endif
|
||||
names = stackPopINT(pVM->pStack);
|
||||
namep = (char*) stackPopPtr(pVM->pStack);
|
||||
|
||||
#ifndef TESTMAIN
|
||||
name = (char*) ficlMalloc(names+1);
|
||||
if (!name)
|
||||
vmThrowErr(pVM, "Error: out of memory");
|
||||
strncpy(name, namep, names);
|
||||
name[names] = '\0';
|
||||
|
||||
value = getenv(name);
|
||||
ficlFree(name);
|
||||
|
||||
if(value != NULL) {
|
||||
stackPushPtr(pVM->pStack, value);
|
||||
stackPushINT(pVM->pStack, strlen(value));
|
||||
} else
|
||||
#endif
|
||||
stackPushINT(pVM->pStack, -1);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
void
|
||||
ficlEfiUnsetenv(FICL_VM *pVM)
|
||||
{
|
||||
#ifndef TESTMAIN
|
||||
char *name;
|
||||
#endif
|
||||
char *namep;
|
||||
int names;
|
||||
|
||||
#if FICL_ROBUST > 1
|
||||
vmCheckStack(pVM, 2, 0);
|
||||
#endif
|
||||
names = stackPopINT(pVM->pStack);
|
||||
namep = (char*) stackPopPtr(pVM->pStack);
|
||||
|
||||
#ifndef TESTMAIN
|
||||
name = (char*) ficlMalloc(names+1);
|
||||
if (!name)
|
||||
vmThrowErr(pVM, "Error: out of memory");
|
||||
strncpy(name, namep, names);
|
||||
name[names] = '\0';
|
||||
|
||||
unsetenv(name);
|
||||
ficlFree(name);
|
||||
#endif
|
||||
|
||||
return;
|
||||
}
|
||||
/**************************************************************************
|
||||
|
||||
** Build FreeBSD platform extensions into the system dictionary
|
||||
**************************************************************************/
|
||||
void ficlEfiCompilePlatform(FICL_SYSTEM *pSys)
|
||||
{
|
||||
FICL_DICT *dp = pSys->dp;
|
||||
assert (dp);
|
||||
|
||||
dictAppendWord(dp, "efi-setenv", ficlEfiSetenv, FW_DEFAULT);
|
||||
dictAppendWord(dp, "efi-getenv", ficlEfiGetenv, FW_DEFAULT);
|
||||
dictAppendWord(dp, "efi-unsetenv", ficlEfiUnsetenv, FW_DEFAULT);
|
||||
|
||||
return;
|
||||
}
|
Loading…
Reference in New Issue
Block a user