void hexdump(uint8_t *buf, int length) { hexdumpoffset(buf, length, 0); }
int nand_read(struct cmd_param *params) { struct chip_param_io chip_params; int fd = -1, out_fd = -1, done = 0, ret = 0; char *dev, *out; int pos, count, mult, block_size; uint8_t *buf = NULL; if (!(dev = param_get_string(params, "dev"))) { fprintf(stderr, "You must specify 'dev' parameter\n"); return (1); } if ((out = param_get_string(params, "out"))) { out_fd = open(out, O_WRONLY|O_CREAT); if (out_fd == -1) { perrorf("Cannot open %s for writing", out); return (1); } } if ((fd = g_open(dev, 1)) == -1) { perrorf("Cannot open %s", dev); ret = 1; goto out; } if (ioctl(fd, NAND_IO_GET_CHIP_PARAM, &chip_params) == -1) { perrorf("Cannot ioctl(NAND_IO_GET_CHIP_PARAM)"); ret = 1; goto out; } block_size = chip_params.page_size * chip_params.pages_per_block; if (param_has_value(params, "page")) { pos = chip_params.page_size * param_get_int(params, "page"); mult = chip_params.page_size; } else if (param_has_value(params, "block")) { pos = block_size * param_get_int(params, "block"); mult = block_size; } else if (param_has_value(params, "pos")) { pos = param_get_int(params, "pos"); mult = 1; if (pos % chip_params.page_size) { fprintf(stderr, "Position must be page-size aligned!\n"); ret = 1; goto out; } } else { fprintf(stderr, "You must specify one of: 'block', 'page'," "'pos' arguments\n"); ret = 1; goto out; } if (!(param_has_value(params, "count"))) count = mult; else count = param_get_int(params, "count") * mult; if (!(buf = malloc(chip_params.page_size))) { perrorf("Cannot allocate buffer [size %x]", chip_params.page_size); ret = 1; goto out; } lseek(fd, pos, SEEK_SET); while (done < count) { if ((ret = read(fd, buf, chip_params.page_size)) != (int32_t)chip_params.page_size) { perrorf("read error (read %d bytes)", ret); goto out; } if (out_fd != -1) { done += ret; if ((ret = write(out_fd, buf, chip_params.page_size)) != (int32_t)chip_params.page_size) { perrorf("write error (written %d bytes)", ret); ret = 1; goto out; } } else { hexdumpoffset(buf, chip_params.page_size, done); done += ret; } } out: g_close(fd); if (out_fd != -1) close(out_fd); if (buf) free(buf); return (ret); }