1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
21 #include <sys/types.h>
22 #include <linux/types.h>
24 #include <asm/getopt.h>
25 #include <asm/sections.h>
26 #include <asm/state.h>
30 /* Operating System Interface */
33 size_t length; /* number of bytes in the block */
36 ssize_t os_read(int fd, void *buf, size_t count)
38 return read(fd, buf, count);
41 ssize_t os_read_no_block(int fd, void *buf, size_t count)
43 const int flags = fcntl(fd, F_GETFL, 0);
45 fcntl(fd, F_SETFL, flags | O_NONBLOCK);
46 return os_read(fd, buf, count);
49 ssize_t os_write(int fd, const void *buf, size_t count)
51 return write(fd, buf, count);
54 off_t os_lseek(int fd, off_t offset, int whence)
56 if (whence == OS_SEEK_SET)
58 else if (whence == OS_SEEK_CUR)
60 else if (whence == OS_SEEK_END)
64 return lseek(fd, offset, whence);
67 int os_open(const char *pathname, int os_flags)
71 switch (os_flags & OS_O_MASK) {
86 if (os_flags & OS_O_CREAT)
89 return open(pathname, flags, 0777);
97 int os_unlink(const char *pathname)
99 return unlink(pathname);
102 void os_exit(int exit_code)
107 /* Restore tty state when we exit */
108 static struct termios orig_term;
109 static bool term_setup;
111 void os_fd_restore(void)
114 tcsetattr(0, TCSANOW, &orig_term);
119 /* Put tty into raw mode so <tab> and <ctrl+c> work */
120 void os_tty_raw(int fd, bool allow_sigs)
127 /* If not a tty, don't complain */
128 if (tcgetattr(fd, &orig_term))
132 term.c_iflag = IGNBRK | IGNPAR;
133 term.c_oflag = OPOST | ONLCR;
134 term.c_cflag = CS8 | CREAD | CLOCAL;
135 term.c_lflag = allow_sigs ? ISIG : 0;
136 if (tcsetattr(fd, TCSANOW, &term))
140 atexit(os_fd_restore);
143 void *os_malloc(size_t length)
145 struct os_mem_hdr *hdr;
146 int page_size = getpagesize();
148 hdr = mmap(NULL, length + page_size,
149 PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
150 if (hdr == MAP_FAILED)
152 hdr->length = length;
154 return (void *)hdr + page_size;
157 void os_free(void *ptr)
159 struct os_mem_hdr *hdr = ptr;
163 munmap(hdr, hdr->length + sizeof(*hdr));
166 void *os_realloc(void *ptr, size_t length)
168 struct os_mem_hdr *hdr = ptr;
173 buf = os_malloc(length);
177 if (length > hdr->length)
178 length = hdr->length;
179 memcpy(buf, ptr, length);
187 void os_usleep(unsigned long usec)
192 uint64_t __attribute__((no_instrument_function)) os_get_nsec(void)
194 #if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
196 if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
199 gettimeofday(&tv, NULL);
200 tp.tv_sec = tv.tv_sec;
201 tp.tv_nsec = tv.tv_usec * 1000;
203 return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
206 gettimeofday(&tv, NULL);
207 return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
211 static char *short_opts;
212 static struct option *long_opts;
214 int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
216 struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
217 size_t num_options = __u_boot_sandbox_option_count();
220 int hidden_short_opt;
225 if (short_opts || long_opts)
231 /* dynamically construct the arguments to the system getopt_long */
232 short_opts = os_malloc(sizeof(*short_opts) * num_options * 2 + 1);
233 long_opts = os_malloc(sizeof(*long_opts) * num_options);
234 if (!short_opts || !long_opts)
238 * getopt_long requires "val" to be unique (since that is what the
239 * func returns), so generate unique values automatically for flags
240 * that don't have a short option. pick 0x100 as that is above the
241 * single byte range (where ASCII/ISO-XXXX-X charsets live).
243 hidden_short_opt = 0x100;
245 for (i = 0; i < num_options; ++i) {
246 long_opts[i].name = sb_opt[i]->flag;
247 long_opts[i].has_arg = sb_opt[i]->has_arg ?
248 required_argument : no_argument;
249 long_opts[i].flag = NULL;
251 if (sb_opt[i]->flag_short) {
252 short_opts[si++] = long_opts[i].val = sb_opt[i]->flag_short;
253 if (long_opts[i].has_arg == required_argument)
254 short_opts[si++] = ':';
256 long_opts[i].val = sb_opt[i]->flag_short = hidden_short_opt++;
258 short_opts[si] = '\0';
260 /* we need to handle output ourselves since u-boot provides printf */
264 * walk all of the options the user gave us on the command line,
265 * figure out what u-boot option structure they belong to (via
266 * the unique short val key), and call the appropriate callback.
268 while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
269 for (i = 0; i < num_options; ++i) {
270 if (sb_opt[i]->flag_short == c) {
271 if (sb_opt[i]->callback(state, optarg)) {
272 state->parse_err = sb_opt[i]->flag;
278 if (i == num_options) {
280 * store the faulting flag for later display. we have to
281 * store the flag itself as the getopt parsing itself is
282 * tricky: need to handle the following flags (assume all
283 * of the below are unknown):
284 * -a optopt='a' optind=<next>
285 * -abbbb optopt='a' optind=<this>
286 * -aaaaa optopt='a' optind=<this>
287 * --a optopt=0 optind=<this>
288 * as you can see, it is impossible to determine the exact
289 * faulting flag without doing the parsing ourselves, so
290 * we just report the specific flag that failed.
293 static char parse_err[3] = { '-', 0, '\0', };
294 parse_err[1] = optopt;
295 state->parse_err = parse_err;
297 state->parse_err = argv[optind - 1];
305 void os_dirent_free(struct os_dirent_node *node)
307 struct os_dirent_node *next;
316 int os_dirent_ls(const char *dirname, struct os_dirent_node **headp)
318 struct dirent *entry;
319 struct os_dirent_node *head, *node, *next;
329 dir = opendir(dirname);
333 /* Create a buffer upfront, with typically sufficient size */
334 dirlen = strlen(dirname) + 2;
342 for (node = head = NULL;; node = next) {
344 entry = readdir(dir);
349 next = malloc(sizeof(*node) + strlen(entry->d_name) + 1);
351 os_dirent_free(head);
355 if (dirlen + strlen(entry->d_name) > len) {
356 len = dirlen + strlen(entry->d_name);
358 fname = realloc(fname, len);
362 os_dirent_free(head);
368 strcpy(next->name, entry->d_name);
369 switch (entry->d_type) {
371 next->type = OS_FILET_REG;
374 next->type = OS_FILET_DIR;
377 next->type = OS_FILET_LNK;
380 next->type = OS_FILET_UNKNOWN;
383 snprintf(fname, len, "%s/%s", dirname, next->name);
384 if (!stat(fname, &buf))
385 next->size = buf.st_size;
399 const char *os_dirent_typename[OS_FILET_COUNT] = {
406 const char *os_dirent_get_typename(enum os_dirent_t type)
408 if (type >= OS_FILET_REG && type < OS_FILET_COUNT)
409 return os_dirent_typename[type];
411 return os_dirent_typename[OS_FILET_UNKNOWN];
414 int os_get_filesize(const char *fname, loff_t *size)
419 ret = stat(fname, &buf);
431 void os_puts(const char *str)
437 int os_write_ram_buf(const char *fname)
439 struct sandbox_state *state = state_get_current();
442 fd = open(fname, O_CREAT | O_WRONLY, 0777);
445 ret = write(fd, state->ram_buf, state->ram_size);
447 if (ret != state->ram_size)
453 int os_read_ram_buf(const char *fname)
455 struct sandbox_state *state = state_get_current();
459 ret = os_get_filesize(fname, &size);
462 if (size != state->ram_size)
464 fd = open(fname, O_RDONLY);
468 ret = read(fd, state->ram_buf, state->ram_size);
470 if (ret != state->ram_size)
476 static int make_exec(char *fname, const void *data, int size)
480 strcpy(fname, "/tmp/u-boot.jump.XXXXXX");
484 if (write(fd, data, size) < 0)
487 if (chmod(fname, 0777))
493 static int add_args(char ***argvp, const char *add_args[], int count)
498 for (argv = *argvp, argc = 0; (*argvp)[argc]; argc++)
501 argv = malloc((argc + count + 1) * sizeof(char *));
503 printf("Out of memory for %d argv\n", count);
506 memcpy(argv, *argvp, argc * sizeof(char *));
507 memcpy(argv + argc, add_args, count * sizeof(char *));
508 argv[argc + count] = NULL;
514 int os_jump_to_image(const void *dest, int size)
516 struct sandbox_state *state = state_get_current();
517 char fname[30], mem_fname[30];
519 const char *extra_args[5];
520 char **argv = state->argv;
525 err = make_exec(fname, dest, size);
529 strcpy(mem_fname, "/tmp/u-boot.mem.XXXXXX");
530 fd = mkstemp(mem_fname);
534 err = os_write_ram_buf(mem_fname);
540 extra_args[0] = "-j";
541 extra_args[1] = fname;
542 extra_args[2] = "-m";
543 extra_args[3] = mem_fname;
544 extra_args[4] = "--rm_memory";
545 err = add_args(&argv, extra_args,
546 sizeof(extra_args) / sizeof(extra_args[0]));
551 for (i = 0; argv[i]; i++)
552 printf("%d %s\n", i, argv[i]);
558 err = execv(fname, argv);
563 return unlink(fname);
566 int os_find_u_boot(char *fname, int maxlen)
568 struct sandbox_state *state = state_get_current();
569 const char *progname = state->argv[0];
570 int len = strlen(progname);
574 if (len >= maxlen || len < 4)
577 /* Look for 'u-boot' in the same directory as 'u-boot-spl' */
578 strcpy(fname, progname);
579 if (!strcmp(fname + len - 4, "-spl")) {
580 fname[len - 4] = '\0';
581 fd = os_open(fname, O_RDONLY);
588 /* Look for 'u-boot' in the parent directory of spl/ */
589 p = strstr(fname, "/spl/");
592 fd = os_open(fname, O_RDONLY);
602 int os_spl_to_uboot(const char *fname)
604 struct sandbox_state *state = state_get_current();
605 char *argv[state->argc + 1];
608 memcpy(argv, state->argv, sizeof(char *) * (state->argc + 1));
609 argv[0] = (char *)fname;
610 ret = execv(fname, argv);
614 return unlink(fname);
617 void os_localtime(struct rtc_time *rt)
619 time_t t = time(NULL);
623 rt->tm_sec = tm->tm_sec;
624 rt->tm_min = tm->tm_min;
625 rt->tm_hour = tm->tm_hour;
626 rt->tm_mday = tm->tm_mday;
627 rt->tm_mon = tm->tm_mon + 1;
628 rt->tm_year = tm->tm_year + 1900;
629 rt->tm_wday = tm->tm_wday;
630 rt->tm_yday = tm->tm_yday;
631 rt->tm_isdst = tm->tm_isdst;
634 int os_setjmp(ulong *jmp, int size)
639 * We cannot rely on the struct name that jmp_buf uses, so use a
640 * local variable here
642 if (size < sizeof(dummy)) {
643 printf("setjmp: jmpbuf is too small (%d bytes, need %d)\n",
644 size, sizeof(jmp_buf));
648 return setjmp((struct __jmp_buf_tag *)jmp);
651 void os_longjmp(ulong *jmp, int ret)
653 longjmp((struct __jmp_buf_tag *)jmp, ret);