[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/miscutils/nandwrite.c b/ap/app/busybox/src/miscutils/nandwrite.c
new file mode 100644
index 0000000..5908ac7
--- /dev/null
+++ b/ap/app/busybox/src/miscutils/nandwrite.c
@@ -0,0 +1,239 @@
+/*
+ * nandwrite and nanddump ported to busybox from mtd-utils
+ *
+ * Author: Baruch Siach <baruch@tkos.co.il>, Orex Computed Radiography
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ *
+ * TODO: add support for large (>4GB) MTD devices
+ */
+
+//config:config NANDWRITE
+//config: bool "nandwrite"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: Write to the specified MTD device, with bad blocks awareness
+//config:
+//config:config NANDDUMP
+//config: bool "nanddump"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: help
+//config: Dump the content of raw NAND chip
+
+//applet:IF_NANDWRITE(APPLET(nandwrite, BB_DIR_USR_SBIN, BB_SUID_DROP))
+//applet:IF_NANDWRITE(APPLET_ODDNAME(nanddump, nandwrite, BB_DIR_USR_SBIN, BB_SUID_DROP, nanddump))
+
+//kbuild:lib-$(CONFIG_NANDWRITE) += nandwrite.o
+//kbuild:lib-$(CONFIG_NANDDUMP) += nandwrite.o
+
+//usage:#define nandwrite_trivial_usage
+//usage: "[-p] [-s ADDR] MTD_DEVICE [FILE]"
+//usage:#define nandwrite_full_usage "\n\n"
+//usage: "Write to the specified MTD device\n"
+//usage: "\n -p Pad to page size"
+//usage: "\n -s ADDR Start address"
+
+//usage:#define nanddump_trivial_usage
+//usage: "[-o] [-b] [-s ADDR] [-f FILE] MTD_DEVICE"
+//usage:#define nanddump_full_usage "\n\n"
+//usage: "Dump the specified MTD device\n"
+//usage: "\n -o Dump oob data"
+//usage: "\n -b Omit bad block from the dump"
+//usage: "\n -s ADDR Start address"
+//usage: "\n -l LEN Length"
+//usage: "\n -f FILE Dump to file ('-' for stdout)"
+
+#include "libbb.h"
+#include <mtd/mtd-user.h>
+
+#define IS_NANDDUMP (ENABLE_NANDDUMP && (!ENABLE_NANDWRITE || (applet_name[4] == 'd')))
+#define IS_NANDWRITE (ENABLE_NANDWRITE && (!ENABLE_NANDDUMP || (applet_name[4] != 'd')))
+
+#define OPT_p (1 << 0) /* nandwrite only */
+#define OPT_o (1 << 0) /* nanddump only */
+#define OPT_s (1 << 1)
+#define OPT_b (1 << 2)
+#define OPT_f (1 << 3)
+#define OPT_l (1 << 4)
+
+/* helper for writing out 0xff for bad blocks pad */
+static void dump_bad(struct mtd_info_user *meminfo, unsigned len, int oob)
+{
+ unsigned char buf[meminfo->writesize];
+ unsigned count;
+
+ /* round len to the next page */
+ len = (len | ~(meminfo->writesize - 1)) + 1;
+
+ memset(buf, 0xff, sizeof(buf));
+ for (count = 0; count < len; count += meminfo->writesize) {
+ xwrite(STDOUT_FILENO, buf, meminfo->writesize);
+ if (oob)
+ xwrite(STDOUT_FILENO, buf, meminfo->oobsize);
+ }
+}
+
+static unsigned next_good_eraseblock(int fd, struct mtd_info_user *meminfo,
+ unsigned block_offset)
+{
+ while (1) {
+ loff_t offs;
+
+ if (block_offset >= meminfo->size) {
+ if (IS_NANDWRITE)
+ bb_error_msg_and_die("not enough space in MTD device");
+ return block_offset; /* let the caller exit */
+ }
+ offs = block_offset;
+ if (xioctl(fd, MEMGETBADBLOCK, &offs) == 0)
+ return block_offset;
+ /* ioctl returned 1 => "bad block" */
+ if (IS_NANDWRITE)
+ printf("Skipping bad block at 0x%08x\n", block_offset);
+ block_offset += meminfo->erasesize;
+ }
+}
+
+int nandwrite_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int nandwrite_main(int argc UNUSED_PARAM, char **argv)
+{
+ /* Buffer for OOB data */
+ unsigned char *oobbuf;
+ unsigned opts;
+ int fd;
+ ssize_t cnt;
+ unsigned mtdoffset, meminfo_writesize, blockstart, limit;
+ unsigned end_addr = ~0;
+ struct mtd_info_user meminfo;
+ struct mtd_oob_buf oob;
+ unsigned char *filebuf;
+ const char *opt_s = "0", *opt_f = "-", *opt_l;
+
+ if (IS_NANDDUMP) {
+ opt_complementary = "=1";
+ opts = getopt32(argv, "os:bf:l:", &opt_s, &opt_f, &opt_l);
+ } else { /* nandwrite */
+ opt_complementary = "-1:?2";
+ opts = getopt32(argv, "ps:", &opt_s);
+ }
+ argv += optind;
+
+ if (IS_NANDWRITE && argv[1])
+ opt_f = argv[1];
+ if (!LONE_DASH(opt_f)) {
+ int tmp_fd = xopen(opt_f,
+ IS_NANDDUMP ? O_WRONLY | O_TRUNC | O_CREAT : O_RDONLY
+ );
+ xmove_fd(tmp_fd, IS_NANDDUMP ? STDOUT_FILENO : STDIN_FILENO);
+ }
+
+ fd = xopen(argv[0], IS_NANDWRITE ? O_RDWR : O_RDONLY);
+ xioctl(fd, MEMGETINFO, &meminfo);
+
+ mtdoffset = xstrtou(opt_s, 0);
+ if (IS_NANDDUMP && (opts & OPT_l)) {
+ unsigned length = xstrtou(opt_l, 0);
+ if (length < meminfo.size - mtdoffset)
+ end_addr = mtdoffset + length;
+ }
+
+ /* Pull it into a CPU register (hopefully) - smaller code that way */
+ meminfo_writesize = meminfo.writesize;
+
+ if (mtdoffset & (meminfo_writesize - 1))
+ bb_error_msg_and_die("start address is not page aligned");
+
+ filebuf = xmalloc(meminfo_writesize);
+ oobbuf = xmalloc(meminfo.oobsize);
+
+ oob.start = 0;
+ oob.length = meminfo.oobsize;
+ oob.ptr = oobbuf;
+
+ blockstart = mtdoffset & ~(meminfo.erasesize - 1);
+ if (blockstart != mtdoffset) {
+ unsigned tmp;
+ /* mtdoffset is in the middle of an erase block, verify that
+ * this block is OK. Advance mtdoffset only if this block is
+ * bad.
+ */
+ tmp = next_good_eraseblock(fd, &meminfo, blockstart);
+ if (tmp != blockstart) {
+ /* bad block(s), advance mtdoffset */
+ if (IS_NANDDUMP && !(opts & OPT_b)) {
+ int bad_len = MIN(tmp, end_addr) - mtdoffset;
+ dump_bad(&meminfo, bad_len, opts & OPT_o);
+ }
+ mtdoffset = tmp;
+ }
+ }
+
+ cnt = -1;
+ limit = MIN(meminfo.size, end_addr);
+ while (mtdoffset < limit) {
+ int input_fd = IS_NANDWRITE ? STDIN_FILENO : fd;
+ int output_fd = IS_NANDWRITE ? fd : STDOUT_FILENO;
+
+ blockstart = mtdoffset & ~(meminfo.erasesize - 1);
+ if (blockstart == mtdoffset) {
+ /* starting a new eraseblock */
+ mtdoffset = next_good_eraseblock(fd, &meminfo, blockstart);
+ if (IS_NANDWRITE)
+ printf("Writing at 0x%08x\n", mtdoffset);
+ else if (mtdoffset > blockstart && !(opts & OPT_b)) {
+ int bad_len = MIN(mtdoffset, limit) - blockstart;
+ dump_bad(&meminfo, bad_len, opts & OPT_o);
+ }
+ if (mtdoffset >= limit)
+ break;
+ }
+ xlseek(fd, mtdoffset, SEEK_SET);
+
+ /* get some more data from input */
+ cnt = full_read(input_fd, filebuf, meminfo_writesize);
+ if (cnt == 0) {
+ /* even with -p, we do not pad past the end of input
+ * (-p only zero-pads last incomplete page)
+ */
+ break;
+ }
+ if (cnt < meminfo_writesize) {
+ if (IS_NANDDUMP)
+ bb_error_msg_and_die("short read");
+ if (!(opts & OPT_p))
+ bb_error_msg_and_die("input size is not rounded up to page size, "
+ "use -p to zero pad");
+ /* zero pad to end of write block */
+ memset(filebuf + cnt, 0, meminfo_writesize - cnt);
+ }
+ xwrite(output_fd, filebuf, meminfo_writesize);
+
+ if (IS_NANDDUMP && (opts & OPT_o)) {
+ /* Dump OOB data */
+ oob.start = mtdoffset;
+ xioctl(fd, MEMREADOOB, &oob);
+ xwrite(output_fd, oobbuf, meminfo.oobsize);
+ }
+
+ mtdoffset += meminfo_writesize;
+ if (cnt < meminfo_writesize)
+ break;
+ }
+
+ if (IS_NANDWRITE && cnt != 0) {
+ /* We filled entire MTD, but did we reach EOF on input? */
+ if (full_read(STDIN_FILENO, filebuf, meminfo_writesize) != 0) {
+ /* no */
+ bb_error_msg_and_die("not enough space in MTD device");
+ }
+ }
+
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ free(filebuf);
+ close(fd);
+ }
+
+ return EXIT_SUCCESS;
+}