1 /* vi: set sw=4 ts=4: */
3 * busybox reimplementation of flashcp
5 * (C) 2009 Stefan Seyfried <seife@sphairon.com>
7 * Licensed under GPLv2, see file LICENSE in this source tree.
10 //usage:#define flashcp_trivial_usage
11 //usage: "-v FILE MTD_DEVICE"
12 //usage:#define flashcp_full_usage "\n\n"
13 //usage: "Copy an image to MTD device\n"
14 //usage: "\n -v Verbose"
17 #include <mtd/mtd-user.h>
19 /* If 1, simulates "flashing" by writing to existing regular file */
22 #define OPT_v (1 << 0)
24 #define BUFSIZE (8 * 1024)
26 static void progress(int mode, uoff_t count, uoff_t total)
30 if (!option_mask32) //if (!(option_mask32 & OPT_v))
32 percent = count * 100;
34 percent = (unsigned) (percent / total);
35 printf("\r%s: %"OFF_FMT"u/%"OFF_FMT"u (%u%%) ",
36 (mode < 0) ? "Erasing block" : ((mode == 0) ? "Writing kb" : "Verifying kb"),
37 count, total, (unsigned)percent);
41 static void progress_newline(void)
43 if (!option_mask32) //if (!(option_mask32 & OPT_v))
48 int flashcp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
49 int flashcp_main(int argc UNUSED_PARAM, char **argv)
51 int fd_f, fd_d; /* input file and mtd device file descriptors */
54 struct mtd_info_user mtd;
55 struct erase_info_user e;
57 // const char *filename, *devicename;
58 RESERVE_CONFIG_UBUFFER(buf, BUFSIZE);
59 RESERVE_CONFIG_UBUFFER(buf2, BUFSIZE);
61 opt_complementary = "=2"; /* exactly 2 non-option args: file, dev */
62 /*opts =*/ getopt32(argv, "v");
64 // filename = *argv++;
65 // devicename = *argv;
66 #define filename argv[0]
67 #define devicename argv[1]
69 /* open input file and mtd device and do sanity checks */
70 fd_f = xopen(filename, O_RDONLY);
72 fd_d = xopen(devicename, O_SYNC | O_RDWR);
74 if (ioctl(fd_d, MEMGETINFO, &mtd) < 0) {
75 bb_error_msg_and_die("%s is not a MTD flash device", devicename);
77 if (statb.st_size > mtd.size) {
78 bb_error_msg_and_die("%s bigger than %s", filename, devicename);
81 mtd.erasesize = 64 * 1024;
84 /* always erase a complete block */
85 erase_count = (uoff_t)(statb.st_size + mtd.erasesize - 1) / mtd.erasesize;
86 /* erase 1 block at a time to be able to give verbose output */
87 e.length = mtd.erasesize;
90 * (2) will it work for multi-gigabyte devices?
91 * (3) worse wrt error detection granularity
93 /* optimization: if not verbose, erase in one go */
94 if (!opts) { // if (!(opts & OPT_v))
95 e.length = mtd.erasesize * erase_count;
100 for (i = 1; i <= erase_count; i++) {
101 progress(-1, i, erase_count);
103 if (ioctl(fd_d, MEMERASE, &e) < 0) {
104 bb_perror_msg_and_die("erase error at 0x%llx on %s",
105 (long long)e.start, devicename);
110 e.start += mtd.erasesize;
114 /* doing this outer loop gives significantly smaller code
115 * than doing two separate loops for writing and verifying */
116 for (i = 0; i <= 1; i++) {
120 xlseek(fd_f, 0, SEEK_SET);
121 xlseek(fd_d, 0, SEEK_SET);
127 progress(i, done / 1024, (uoff_t)statb.st_size / 1024);
128 rem = statb.st_size - done;
133 xread(fd_f, buf, count);
137 memset((char*)buf + count, 0, BUFSIZE - count);
139 ret = full_write(fd_d, buf, BUFSIZE);
140 if (ret != BUFSIZE) {
141 bb_perror_msg_and_die("write error at 0x%"OFF_FMT"x on %s, "
143 done, devicename, ret);
145 } else { /* i == 1 */
146 xread(fd_d, buf2, count);
147 if (memcmp(buf, buf2, count) != 0) {
148 bb_error_msg_and_die("verification mismatch at 0x%"OFF_FMT"x", done);
157 /* we won't come here if there was an error */