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-rw-r--r--util/nvmutil/AUTHORS1
-rw-r--r--util/nvmutil/COPYING20
-rw-r--r--util/nvmutil/ChangeLog.md8
-rw-r--r--util/nvmutil/Makefile33
-rw-r--r--util/nvmutil/README.md4
-rw-r--r--util/nvmutil/nvmutil.c319
6 files changed, 385 insertions, 0 deletions
diff --git a/util/nvmutil/AUTHORS b/util/nvmutil/AUTHORS
new file mode 100644
index 00000000..f3c00385
--- /dev/null
+++ b/util/nvmutil/AUTHORS
@@ -0,0 +1 @@
+Leah Rowe
diff --git a/util/nvmutil/COPYING b/util/nvmutil/COPYING
new file mode 100644
index 00000000..17374089
--- /dev/null
+++ b/util/nvmutil/COPYING
@@ -0,0 +1,20 @@
+Copyright (C) 2022 Leah Rowe <info@minifree.org>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/util/nvmutil/ChangeLog.md b/util/nvmutil/ChangeLog.md
new file mode 100644
index 00000000..e1ed5754
--- /dev/null
+++ b/util/nvmutil/ChangeLog.md
@@ -0,0 +1,8 @@
+This change log has moved. Please refer here for historical pre-osboot-merge
+changes:
+
+<https://libreboot.org/docs/install/nvmutilimport.html>
+
+Osboot merged with Libreboot on November 17th, 2022. For nvmutil changes after
+this date, please check regular Libreboot release announcements which shall
+now specify any such changes.
diff --git a/util/nvmutil/Makefile b/util/nvmutil/Makefile
new file mode 100644
index 00000000..a69c0f0e
--- /dev/null
+++ b/util/nvmutil/Makefile
@@ -0,0 +1,33 @@
+#
+# Makefile for nvmutils
+#
+# Copyright (C) 2022 Leah Rowe <info@minifree.org>
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+CC=cc
+CFLAGS=-Os -Wall -Wextra -Werror -pedantic
+
+all:
+ $(CC) $(CFLAGS) nvmutil.c -o nvm
+
+clean:
+ rm -f nvm
diff --git a/util/nvmutil/README.md b/util/nvmutil/README.md
new file mode 100644
index 00000000..03a25bc4
--- /dev/null
+++ b/util/nvmutil/README.md
@@ -0,0 +1,4 @@
+
+This documentation has become part of lbwww. See:
+
+<https://libreboot.org/docs/install/nvmutil.html>
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c
new file mode 100644
index 00000000..9f93ae59
--- /dev/null
+++ b/util/nvmutil/nvmutil.c
@@ -0,0 +1,319 @@
+/*
+ * Copyright (C) 2022 Leah Rowe <info@minifree.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include <dirent.h>
+#ifdef HAVE_PLEDGE
+#include <err.h>
+#endif
+
+ssize_t readFromFile(int *fd, uint8_t *buf, const char *path, int flags,
+ size_t size);
+void setmac(const char *strMac);
+void cmd(const char *command);
+int validChecksum(int partnum);
+uint16_t word(int pos16, int partnum);
+void setWord(int pos16, int partnum, uint16_t val);
+void byteswap(uint8_t *byte);
+
+#define FILENAME argv[1]
+#define COMMAND argv[2]
+#define MAC_ADDRESS argv[3]
+#define PARTNUM argv[3]
+#define SIZE_4KB 0x1000
+#define SIZE_8KB 0x2000
+
+uint8_t gbe[SIZE_8KB];
+int part, modified = 0;
+
+uint16_t test;
+uint8_t little_endian;
+
+int
+main(int argc, char *argv[])
+{
+ int fd;
+ int flags = O_RDWR;
+ char *strMac = NULL;
+ char *strRMac = "??:??:??:??:??:??";
+
+ test = 1;
+ little_endian = ((uint8_t *) &test)[0];
+
+#ifdef HAVE_PLEDGE
+ if (pledge("stdio wpath", NULL) == -1)
+ err(1, "pledge");
+#endif
+ if (argc == 3) {
+ if (strcmp(COMMAND, "dump") == 0) {
+#ifdef HAVE_PLEDGE
+ if (pledge("stdio rpath", NULL) == -1)
+ err(1, "pledge");
+#endif
+ flags = O_RDONLY;
+ } else if (strcmp(COMMAND, "setmac") == 0) {
+ strMac = strRMac;
+ }
+ } else if (argc == 4) {
+ if (strcmp(COMMAND, "setmac") == 0)
+ strMac = MAC_ADDRESS;
+ else if ((!((part = PARTNUM[0] - '0') == 0 || part == 1))
+ || PARTNUM[1])
+ errno = EINVAL;
+ } else
+ errno = EINVAL;
+
+ if (errno != 0)
+ goto nvmutil_exit;
+
+ if (readFromFile(&fd, gbe, FILENAME, flags, SIZE_8KB)
+ == SIZE_8KB)
+ {
+ if (strMac != NULL)
+ setmac(strMac);
+ else
+ cmd(COMMAND);
+
+ if (modified) {
+ errno = 0;
+ if (pwrite(fd, gbe, SIZE_8KB, 0) == SIZE_8KB)
+ close(fd);
+ }
+ }
+
+nvmutil_exit:
+ if (errno == ENOTDIR)
+ errno = 0;
+ if (!((errno == ECANCELED) && (flags == O_RDONLY)))
+ if (errno != 0)
+ fprintf(stderr, "%s\n", strerror(errno));
+ return errno;
+}
+
+ssize_t
+readFromFile(int *fd, uint8_t *buf, const char *path, int flags, size_t size)
+{
+ struct stat st;
+
+ if (opendir(path) != NULL) {
+ errno = EISDIR;
+ return -1;
+ } else if (((*fd) = open(path, flags)) == -1) {
+ return -1;
+ } else if (size == SIZE_8KB) {
+ fstat((*fd), &st);
+ if (st.st_size != SIZE_8KB) {
+ fprintf(stderr, "Bad file size\n");
+ errno = ECANCELED;
+ return -1;
+ }
+ }
+ return read((*fd), buf, size);
+}
+
+void
+setmac(const char *strMac)
+{
+ uint8_t rmac[12];
+ uint8_t o, ch, val8;
+ uint16_t val16;
+ int macfd, partnum, random, byte, nib;
+ uint16_t mac[3] = {0, 0, 0};
+ uint64_t total = 0;
+
+ if (readFromFile(&macfd, rmac, "/dev/urandom", O_RDONLY, 12) != 12)
+ return;
+ else if (strnlen(strMac, 20) != 17)
+ goto invalid_mac_address;
+ for (o = 0, random = 0; o < 16; o += 3) {
+ if (o != 15)
+ if (strMac[o + 2] != ':')
+ goto invalid_mac_address;
+ byte = o / 3;
+ for (nib = 0; nib < 2; nib++, total += val8) {
+ ch = strMac[o + nib];
+ if ((ch >= '0') && ch <= '9') {
+ val8 = ch - '0';
+ } else if ((ch >= 'A') && (ch <= 'F')) {
+ val8 = ch - 'A' + 10;
+ } else if ((ch >= 'a') && (ch <= 'f')) {
+ val8 = ch - 'a' + 10;
+ } else if (ch == '?') {
+ val8 = rmac[random++] & 0xf;
+ if ((byte == 0 && (nib == 1))) {
+ val8 &= 0xE;
+ val8 |= 2;
+ }
+ } else {
+ goto invalid_mac_address;
+ }
+ val16 = val8;
+ if ((byte % 2) ^ 1)
+ byteswap((uint8_t *) &val16);
+ val16 <<= 4 * (nib ^ 1);
+ mac[byte >> 1] |= val16;
+ }
+ }
+
+ test = mac[0];
+ if (little_endian)
+ byteswap((uint8_t *) &test);
+ if (total == 0 || (((uint8_t *) &test)[0] & 1))
+ goto invalid_mac_address;
+
+ if (little_endian)
+ for (o = 0; o < 3; o++)
+ byteswap((uint8_t *) &mac[o]);
+
+ for (partnum = 0; partnum < 2; partnum++) {
+ if (validChecksum(partnum)) {
+ for (o = 0; o < 3; o++)
+ setWord(o, partnum, mac[o]);
+ part = partnum;
+ cmd("setchecksum");
+ }
+ }
+ return;
+invalid_mac_address:
+ fprintf(stderr, "Bad MAC address\n");
+ errno = ECANCELED;
+ return;
+}
+
+void
+cmd(const char *command)
+{
+ int c, partnum, part0, part1, row, numInvalid;
+ uint8_t *byte;
+ uint16_t val16;
+
+ if (strcmp(command, "dump") == 0) {
+ numInvalid = 0;
+ for (partnum = 0; partnum < 2; partnum++) {
+ if (!validChecksum(partnum))
+ ++numInvalid;
+
+ printf("Part %d:\n", partnum);
+
+ printf("MAC: ");
+ for (c = 0; c < 3; c++) {
+ val16 = word(c, partnum);
+ byte = (uint8_t *) &val16;
+ if (!little_endian)
+ byteswap(byte);
+ printf("%02x:%02x", byte[0], byte[1]);
+ if (c == 2)
+ printf("\n");
+ else
+ printf(":");
+ }
+
+ for (row = 0; row < 8; row++) {
+ printf("%07x ", row << 4);
+ for (c = 0; c < 8; c++) {
+ val16 = word((row << 3) + c, partnum);
+ byte = (uint8_t *) &val16;
+ if (!little_endian)
+ byteswap(byte);
+ printf("%02x%02x ", byte[1], byte[0]);
+ }
+ printf("\n");
+ }
+ }
+ if (numInvalid < 2) {
+ errno = 0;
+ }
+ } else if (strcmp(command, "setchecksum") == 0) {
+ val16 = 0;
+ for (c = 0; c < 0x3F; c++)
+ val16 += word(c, part);
+ setWord(0x3F, part, 0xBABA - val16);
+ } else if (strcmp(command, "brick") == 0) {
+ if (validChecksum(part))
+ setWord(0x3F, part, (word(0x3F, part)) ^ 0xFF);
+ } else if (strcmp(command, "swap") == 0) {
+ part0 = validChecksum(0);
+ part1 = validChecksum(1);
+ if ((modified = (part0 | part1))) {
+ for(part0 = 0; part0 < SIZE_4KB; part0++) {
+ gbe[part0] ^= gbe[part1 = (part0 | SIZE_4KB)];
+ gbe[part1] ^= gbe[part0];
+ gbe[part0] ^= gbe[part1];
+ }
+ }
+ } else if (strcmp(command, "copy") == 0) {
+ if (validChecksum(part))
+ memcpy(gbe + ((part ^ (modified = 1)) << 12),
+ gbe + (part << 12), SIZE_4KB);
+ } else
+ errno = EINVAL;
+}
+
+int
+validChecksum(int partnum)
+{
+ int w;
+ uint16_t total = 0;
+
+ for(w = 0; w <= 0x3F; w++)
+ total += word(w, partnum);
+
+ if (total != 0xBABA) {
+ fprintf(stderr, "BAD checksum in part %d\n", partnum);
+ errno = ECANCELED;
+ return 0;
+ }
+ return 1;
+}
+
+uint16_t
+word(int pos16, int partnum)
+{
+ uint16_t val16 = ((uint16_t *) gbe)[pos16 + (partnum << 11)];
+ if (!little_endian)
+ byteswap((uint8_t *) &val16);
+ return val16;
+}
+
+void
+setWord(int pos16, int partnum, uint16_t val)
+{
+ ((uint16_t *) gbe)[pos16 + (partnum << 11)] = val;
+ if (!little_endian)
+ byteswap(gbe + (pos16 << 1) + (partnum << 12));
+ modified = 1;
+}
+
+void
+byteswap(uint8_t *byte) {
+ byte[0] ^= byte[1];
+ byte[1] ^= byte[0];
+ byte[0] ^= byte[1];
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-10 13:41:28 +0000