Leah Rowe
parent
a0bc61f9de
commit
1fb5f7c6e0
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@ -55,7 +55,6 @@ void writeGbeFile(int *fd, const char *filename);
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#define COMMAND argv[2]
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#define MAC_ADDRESS argv[3]
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#define PARTNUM argv[3]
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#define SIZE_2KB 0x800
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#define SIZE_4KB 0x1000
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#define SIZE_8KB 0x2000
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@ -120,14 +119,13 @@ main(int argc, char *argv[])
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if (errno != 0)
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goto nvmutil_exit;
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if ((cmd == &cmd_copy) || (cmd == &cmd_swap))
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nr = SIZE_4KB;
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else
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nr = 128;
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nr = SIZE_4KB; /* copy/swap commands need everything to be read */
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if ((cmd != &cmd_copy) && (cmd != &cmd_swap))
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nr = 128; /* read only the nvm part */
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if ((cmd == &cmd_copy) || (cmd == &cmd_setchecksum) ||
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(cmd == &cmd_brick))
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skipread[part ^ 1] = 1;
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skipread[part ^ 1] = 1; /* skip reading the unused part */
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readGbeFile(&fd, FILENAME, flags, nr);
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@ -147,7 +145,6 @@ main(int argc, char *argv[])
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nvmutil_exit:
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if ((errno != 0) && (cmd != &cmd_dump))
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err(errno, NULL);
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else
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return errno;
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}
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@ -159,17 +156,15 @@ readGbeFile(int *fd, const char *path, int flags, size_t nr)
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if (opendir(path) != NULL)
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err(errno = EISDIR, "%s", path);
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if (((*fd) = open(path, flags)) == -1)
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else if (((*fd) = open(path, flags)) == -1)
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err(errno, "%s", path);
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if (fstat((*fd), &st) == -1)
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else if (fstat((*fd), &st) == -1)
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err(errno, "%s", path);
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if ((st.st_size != SIZE_8KB)) {
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else if ((st.st_size != SIZE_8KB))
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err(errno = ECANCELED, "File \"%s\" not of size 8KiB", path);
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}
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if (errno == ENOTDIR)
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else if (errno == ENOTDIR)
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errno = 0;
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if (errno != 0)
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else if (errno != 0)
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err(errno, "%s", path);
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for (tr = 0, p = 0; p < 2; p++) {
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@ -187,15 +182,13 @@ readGbeFile(int *fd, const char *path, int flags, size_t nr)
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void
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cmd_setmac(const char *strMac)
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{
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uint8_t *b;
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uint16_t mac[3] = {0, 0, 0};
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if (parseMacAddress(strMac, mac) == -1)
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err(errno = ECANCELED, "Bad MAC address");
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/* nvm words are little endian, *except* the mac address. swap bytes */
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for (int w = 0; w < 3; w++) {
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b = (uint8_t *) &mac[w];
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uint8_t *b = (uint8_t *) &mac[w];
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b[0] ^= b[1];
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b[1] ^= b[0];
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b[0] ^= b[1];
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@ -214,7 +207,6 @@ cmd_setmac(const char *strMac)
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int
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parseMacAddress(const char *strMac, uint16_t *mac)
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{
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int nib, byte;
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uint8_t h;
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uint64_t total = 0;
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@ -225,8 +217,8 @@ parseMacAddress(const char *strMac, uint16_t *mac)
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if (i != 15)
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if (strMac[i + 2] != ':')
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return -1;
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byte = i / 3;
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for (nib = 0; nib < 2; nib++, total += h) {
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int byte = i / 3;
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for (int nib = 0; nib < 2; nib++, total += h) {
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if ((h = hextonum(strMac[i + nib])) > 15)
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return -1;
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if ((byte == 0) && (nib == 1))
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@ -243,22 +235,18 @@ parseMacAddress(const char *strMac, uint16_t *mac)
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}
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uint8_t
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hextonum(char chs)
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hextonum(char ch)
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{
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uint8_t val8, ch = (uint8_t) chs;
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if ((ch >= '0') && (ch <= '9'))
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val8 = ch - '0';
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return ch - '0';
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else if ((ch >= 'A') && (ch <= 'F'))
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val8 = ch - 'A' + 10;
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return ch - 'A' + 10;
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else if ((ch >= 'a') && (ch <= 'f'))
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val8 = ch - 'a' + 10;
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return ch - 'a' + 10;
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else if (ch == '?')
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val8 = rhex();
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return rhex();
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else
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return 16;
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return val8;
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}
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uint8_t
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@ -266,8 +254,6 @@ rhex(void)
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{
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static int rfd = -1;
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static uint64_t rnum = 0;
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uint8_t rval;
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if (rnum == 0) {
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if (rfd == -1)
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if ((rfd = open("/dev/urandom", O_RDONLY)) == -1)
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@ -275,10 +261,8 @@ rhex(void)
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if (read(rfd, (uint8_t *) &rnum, 8) == -1)
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err(errno, "/dev/urandom");
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}
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rval = (uint8_t) (rnum & 0xf);
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uint8_t rval = (uint8_t) (rnum & 0xf);
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rnum >>= 4;
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return rval;
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}
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@ -286,14 +270,11 @@ void
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cmd_dump(void)
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{
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int partnum, numInvalid = 0;
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for (partnum = 0; (partnum < 2); partnum++) {
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for (partnum = 0; partnum < 2; partnum++) {
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if (!validChecksum(partnum))
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++numInvalid;
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printf("MAC (part %d): ", partnum);
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showmac(partnum);
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hexdump(partnum);
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}
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if (numInvalid < 2)
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@ -304,7 +285,6 @@ void
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showmac(int partnum)
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{
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uint16_t val16;
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for (int c = 0; c < 3; c++) {
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val16 = word(c, partnum);
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printf("%02x:%02x", val16 & 0xff, val16 >> 8);
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@ -319,7 +299,6 @@ void
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hexdump(int partnum)
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{
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uint16_t val16;
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for (int row = 0; row < 8; row++) {
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printf("%07x ", row << 4);
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for (int c = 0; c < 8; c++) {
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@ -334,10 +313,8 @@ void
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cmd_setchecksum(void)
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{
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uint16_t val16 = 0;
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for (int c = 0; c < 0x3F; c++)
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val16 += word(c, part);
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setWord(0x3F, part, 0xBABA - val16);
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}
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@ -355,11 +332,9 @@ cmd_swap(void)
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gbe[0] ^= gbe[1];
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gbe[1] ^= gbe[0];
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gbe[0] ^= gbe[1];
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gbeFileModified = 1;
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nvmPartModified[0] = 1;
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nvmPartModified[1] = 1;
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errno = 0;
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}
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}
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@ -369,7 +344,6 @@ cmd_copy(void)
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{
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if (validChecksum(part)) {
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gbe[part ^ 1] = gbe[part];
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gbeFileModified = 1;
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nvmPartModified[part ^ 1] = 1;
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}
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@ -379,10 +353,8 @@ int
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validChecksum(int partnum)
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{
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uint16_t total = 0;
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for(int w = 0; w <= 0x3F; w++)
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total += word(w, partnum);
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if (total == 0xBABA)
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return 1;
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@ -403,9 +375,7 @@ setWord(int pos16, int partnum, uint16_t val16)
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gbeWriteAttempted = 1;
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if (word(pos16, partnum) == val16)
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return;
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buf16[pos16 + (partnum << 11)] = val16;
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gbeFileModified = 1;
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nvmPartModified[partnum] = 1;
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}
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@ -415,7 +385,6 @@ byteswap(int n, int partnum)
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{
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int b1, b2, wcount = n >> 1;
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uint8_t *nbuf = (uint8_t *) gbe[partnum];
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for (int w = 0; w < wcount; w++) {
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b1 = b2 = w << 1;
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nbuf[b1] ^= nbuf[++b2];
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@ -429,10 +398,8 @@ writeGbeFile(int *fd, const char *filename)
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{
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int p, nw, tw;
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errno = 0;
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/* if copy/swap not performed, write only the nvm part */
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if ((gbe[0] != gbe[1]) && (gbe[0] < gbe[1]))
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nw = 128;
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nw = 128; /* copy/swap command, so only write the nvm part */
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else
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nw = SIZE_4KB;
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@ -457,6 +424,6 @@ next_part:
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}
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if (close((*fd)))
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err(errno, "%s", filename);
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else
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printf("%d bytes written to file: `%s`\n", tw, filename);
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}
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