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-rw-r--r--tools/firmware-utils/src/mkbrncmdline.c168
-rw-r--r--tools/firmware-utils/src/mkbrnimg.c183
2 files changed, 351 insertions, 0 deletions
diff --git a/tools/firmware-utils/src/mkbrncmdline.c b/tools/firmware-utils/src/mkbrncmdline.c
new file mode 100644
index 0000000000..6eb4bfe7cf
--- /dev/null
+++ b/tools/firmware-utils/src/mkbrncmdline.c
@@ -0,0 +1,168 @@
+/*
+ * mkbrncmdline.c - partially based on OpenWrt's wndr3700.c
+ *
+ * Copyright (C) 2011 Tobias Diedrich <ranma+openwrt@tdiedrich.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License,
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <inttypes.h>
+
+static void usage(const char *) __attribute__ (( __noreturn__ ));
+
+static void usage(const char *mess)
+{
+ fprintf(stderr, "Error: %s\n", mess);
+ fprintf(stderr, "Usage: mkbrncmdline -i input_file -o output_file [-a loadaddress] arg1 [argx ...]\n");
+ fprintf(stderr, "\n");
+ exit(1);
+}
+
+static char *input_file = NULL;
+static char *output_file = NULL;
+static unsigned loadaddr = 0x80002000;
+
+static void parseopts(int *argc, char ***argv)
+{
+ char *endptr;
+ int res;
+
+ while ((res = getopt(*argc, *argv, "a:i:o:")) != -1) {
+ switch (res) {
+ default:
+ usage("Unknown option");
+ break;
+ case 'a':
+ loadaddr = strtoul(optarg, &endptr, 0);
+ if (endptr == optarg || *endptr != 0)
+ usage("loadaddress must be a decimal or hexadecimal 32-bit value");
+ break;
+ case 'i':
+ input_file = optarg;
+ break;
+ case 'o':
+ output_file = optarg;
+ break;
+ }
+ }
+ *argc -= optind;
+ *argv += optind;
+}
+
+static void emitload(int outfd, int reg, unsigned value)
+{
+ char buf[8] = {
+ 0x3c, 0x04 + reg,
+ value >> 24, value >> 16,
+ 0x34, 0x84 + reg + (reg << 5),
+ value >> 8, value,
+ };
+ if (write(outfd, buf, sizeof(buf)) != sizeof(buf)) {
+ fprintf(stderr, "write: %s\n", strerror(errno));
+ exit(1);
+ }
+}
+
+int main(int argc, char **argv)
+{
+ int outfd;
+ int i;
+ int fd;
+ size_t len, skip, buf_len;
+ unsigned cmdline_addr;
+ unsigned s_ofs;
+ char *buf;
+
+ parseopts(&argc, &argv);
+
+ if (argc < 1)
+ usage("must specify at least one kernel cmdline argument");
+
+ if (input_file == NULL || output_file == NULL)
+ usage("must specify input and output file");
+
+ if ((outfd = open(output_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
+ {
+ fprintf(stderr, "Error opening '%s' for writing: %s\n", output_file, strerror(errno));
+ exit(1);
+ }
+
+ // mmap input_file
+ if ((fd = open(input_file, O_RDONLY)) < 0
+ || (len = lseek(fd, 0, SEEK_END)) < 0
+ || (input_file = mmap(0, len, PROT_READ, MAP_SHARED, fd, 0)) == (void *) (-1)
+ || close(fd) < 0)
+ {
+ fprintf(stderr, "Error mapping file '%s': %s\n", input_file, strerror(errno));
+ exit(1);
+ }
+
+ cmdline_addr = loadaddr + len;
+
+ // Kernel args are passed in registers a0,a1,a2 and a3
+ emitload(outfd, 0, 0); /* a0 = 0 */
+ emitload(outfd, 1, 0); /* a1 = 0 */
+ emitload(outfd, 2, cmdline_addr); /* a2 = &cmdline */
+ emitload(outfd, 3, 0); /* a3 = 0 */
+ skip = lseek(outfd, 0, SEEK_END);
+
+ // write the kernel
+ if (write(outfd, input_file + skip, len - skip) != len -skip) {
+ fprintf(stderr, "write: %s\n", strerror(errno));
+ exit(1);
+ }
+
+ // write cmdline structure
+ buf_len = (argc + 1) * 4;
+ for (i=0; i<argc; i++) {
+ buf_len += strlen(argv[i]) + 1;
+ }
+ buf = malloc(buf_len + 16);
+ if (!buf) {
+ fprintf(stderr, "Could not allocate memory for cmdline buffer\n");
+ exit(1);
+ }
+ memset(buf, 0, buf_len);
+
+ s_ofs = 4 * (argc + 1);
+ for (i=0; i<argc; i++) {
+ unsigned s_ptr = cmdline_addr + s_ofs;
+ buf[i * 4 + 0] = s_ptr >> 24;
+ buf[i * 4 + 1] = s_ptr >> 16;
+ buf[i * 4 + 2] = s_ptr >> 8;
+ buf[i * 4 + 3] = s_ptr >> 0;
+ memcpy(&buf[s_ofs], argv[i], strlen(argv[i]));
+ s_ofs += strlen(argv[i]) + 1;
+ }
+ if (write(outfd, buf, buf_len) != buf_len) {
+ fprintf(stderr, "write: %s\n", strerror(errno));
+ exit(1);
+ }
+
+
+ munmap(input_file, len);
+ close(outfd);
+ free(buf);
+
+ return 0;
+}
diff --git a/tools/firmware-utils/src/mkbrnimg.c b/tools/firmware-utils/src/mkbrnimg.c
new file mode 100644
index 0000000000..fff92c4ef6
--- /dev/null
+++ b/tools/firmware-utils/src/mkbrnimg.c
@@ -0,0 +1,183 @@
+/*
+ * mkbrnimg.c - partially based on OpenWrt's wndr3700.c
+ *
+ * Copyright (C) 2011 Tobias Diedrich <ranma+openwrt@tdiedrich.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License,
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <netinet/in.h>
+#include <inttypes.h>
+
+#define BPB 8 /* bits/byte */
+
+static uint32_t crc32[1<<BPB];
+
+static void init_crc32()
+{
+ const uint32_t poly = ntohl(0x2083b8ed);
+ int n;
+
+ for (n = 0; n < 1<<BPB; n++) {
+ uint32_t crc = n;
+ int bit;
+
+ for (bit = 0; bit < BPB; bit++)
+ crc = (crc & 1) ? (poly ^ (crc >> 1)) : (crc >> 1);
+ crc32[n] = crc;
+ }
+}
+
+static uint32_t crc32buf(unsigned char *buf, size_t len)
+{
+ uint32_t crc = 0xFFFFFFFF;
+
+ for (; len; len--, buf++)
+ crc = crc32[(uint8_t)crc ^ *buf] ^ (crc >> BPB);
+ return ~crc;
+}
+
+static void usage(const char *) __attribute__ (( __noreturn__ ));
+
+static void usage(const char *mess)
+{
+ fprintf(stderr, "Error: %s\n", mess);
+ fprintf(stderr, "Usage: mkbrnimg [-o output_file] [-m magic] [-s signature] kernel_file [additional files]\n");
+ fprintf(stderr, "\n");
+ exit(1);
+}
+
+static char *output_file = "default-brnImage";
+static uint32_t magic = 0x12345678;
+static char *signature = "BRNDTW502";
+
+static void parseopts(int *argc, char ***argv)
+{
+ char *endptr;
+ int res;
+
+ while ((res = getopt(*argc, *argv, "o:m:s:")) != -1) {
+ switch (res) {
+ default:
+ usage("Unknown option");
+ break;
+ case 'o':
+ output_file = optarg;
+ break;
+ case 'm':
+ magic = strtoul(optarg, &endptr, 0);
+ if (endptr == optarg || *endptr != 0)
+ usage("magic must be a decimal or hexadecimal 32-bit value");
+ break;
+ case 's':
+ signature = optarg;
+ break;
+ }
+ }
+ *argc -= optind;
+ *argv += optind;
+}
+
+static void appendfile(int outfd, char *path, int kernel) {
+ int fd;
+ size_t len, padded_len;
+ char *input_file;
+ uint32_t crc;
+ char padding[0x400];
+ char footer[12];
+
+ memset(padding, 0xff, sizeof(padding));
+
+ // mmap input_file
+ if ((fd = open(path, O_RDONLY)) < 0
+ || (len = lseek(fd, 0, SEEK_END)) < 0
+ || (input_file = mmap(0, len, PROT_READ, MAP_SHARED, fd, 0)) == (void *) (-1)
+ || close(fd) < 0)
+ {
+ fprintf(stderr, "Error mapping file '%s': %s\n", path, strerror(errno));
+ exit(1);
+ }
+
+ // kernel should be lzma compressed image, not uImage
+ if (kernel &&
+ (input_file[0] != (char)0x5d ||
+ input_file[1] != (char)0x00 ||
+ input_file[2] != (char)0x00 ||
+ input_file[3] != (char)0x80)) {
+ fprintf(stderr, "lzma signature not found on kernel image.\n");
+ exit(1);
+ }
+
+ init_crc32();
+ crc = crc32buf(input_file, len);
+ fprintf(stderr, "crc32 for '%s' is %08x.\n", path, crc);
+
+ // write the file
+ write(outfd, input_file, len);
+
+ // write padding
+ padded_len = ((len + sizeof(footer) + sizeof(padding) - 1) & ~(sizeof(padding) - 1)) - sizeof(footer);
+ fprintf(stderr, "len=%08x padded_len=%08x\n", len, padded_len);
+ write(outfd, padding, padded_len - len);
+
+ // write footer
+ footer[0] = (len >> 0) & 0xff;
+ footer[1] = (len >> 8) & 0xff;
+ footer[2] = (len >> 16) & 0xff;
+ footer[3] = (len >> 24) & 0xff;
+ footer[4] = (magic >> 0) & 0xff;
+ footer[5] = (magic >> 8) & 0xff;
+ footer[6] = (magic >> 16) & 0xff;
+ footer[7] = (magic >> 24) & 0xff;
+ footer[8] = (crc >> 0) & 0xff;
+ footer[9] = (crc >> 8) & 0xff;
+ footer[10] = (crc >> 16) & 0xff;
+ footer[11] = (crc >> 24) & 0xff;
+ write(outfd, footer, sizeof(footer));
+
+ munmap(input_file, len);
+}
+
+int main(int argc, char **argv)
+{
+ int outfd;
+ int i;
+
+ parseopts(&argc, &argv);
+
+ if (argc < 1)
+ usage("wrong number of arguments");
+
+ if ((outfd = open(output_file, O_WRONLY|O_CREAT|O_TRUNC, 0644)) == -1)
+ {
+ fprintf(stderr, "Error opening '%s' for writing: %s\n", output_file, strerror(errno));
+ exit(1);
+ }
+
+ for (i=0; i<argc; i++) {
+ appendfile(outfd, argv[i], i == 0);
+ }
+ write(outfd, signature, strlen(signature)+1);
+ close(outfd);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 10:40:32 +0000