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)
88 if (os_flags & OS_O_TRUNC)
91 return open(pathname, flags, 0777);
99 int os_unlink(const char *pathname)
101 return unlink(pathname);
104 void os_exit(int exit_code)
109 /* Restore tty state when we exit */
110 static struct termios orig_term;
111 static bool term_setup;
113 void os_fd_restore(void)
116 tcsetattr(0, TCSANOW, &orig_term);
121 /* Put tty into raw mode so <tab> and <ctrl+c> work */
122 void os_tty_raw(int fd, bool allow_sigs)
129 /* If not a tty, don't complain */
130 if (tcgetattr(fd, &orig_term))
134 term.c_iflag = IGNBRK | IGNPAR;
135 term.c_oflag = OPOST | ONLCR;
136 term.c_cflag = CS8 | CREAD | CLOCAL;
137 term.c_lflag = allow_sigs ? ISIG : 0;
138 if (tcsetattr(fd, TCSANOW, &term))
142 atexit(os_fd_restore);
145 void *os_malloc(size_t length)
147 struct os_mem_hdr *hdr;
148 int page_size = getpagesize();
150 hdr = mmap(NULL, length + page_size,
151 PROT_READ | PROT_WRITE | PROT_EXEC,
152 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
153 if (hdr == MAP_FAILED)
155 hdr->length = length;
157 return (void *)hdr + page_size;
160 void os_free(void *ptr)
162 struct os_mem_hdr *hdr = ptr;
166 munmap(hdr, hdr->length + sizeof(*hdr));
169 void *os_realloc(void *ptr, size_t length)
171 struct os_mem_hdr *hdr = ptr;
176 buf = os_malloc(length);
180 if (length > hdr->length)
181 length = hdr->length;
182 memcpy(buf, ptr, length);
190 void os_usleep(unsigned long usec)
195 uint64_t __attribute__((no_instrument_function)) os_get_nsec(void)
197 #if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
199 if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
202 gettimeofday(&tv, NULL);
203 tp.tv_sec = tv.tv_sec;
204 tp.tv_nsec = tv.tv_usec * 1000;
206 return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
209 gettimeofday(&tv, NULL);
210 return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
214 static char *short_opts;
215 static struct option *long_opts;
217 int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
219 struct sandbox_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
220 size_t num_options = __u_boot_sandbox_option_count();
223 int hidden_short_opt;
228 if (short_opts || long_opts)
234 /* dynamically construct the arguments to the system getopt_long */
235 short_opts = os_malloc(sizeof(*short_opts) * num_options * 2 + 1);
236 long_opts = os_malloc(sizeof(*long_opts) * num_options);
237 if (!short_opts || !long_opts)
241 * getopt_long requires "val" to be unique (since that is what the
242 * func returns), so generate unique values automatically for flags
243 * that don't have a short option. pick 0x100 as that is above the
244 * single byte range (where ASCII/ISO-XXXX-X charsets live).
246 hidden_short_opt = 0x100;
248 for (i = 0; i < num_options; ++i) {
249 long_opts[i].name = sb_opt[i]->flag;
250 long_opts[i].has_arg = sb_opt[i]->has_arg ?
251 required_argument : no_argument;
252 long_opts[i].flag = NULL;
254 if (sb_opt[i]->flag_short) {
255 short_opts[si++] = long_opts[i].val = sb_opt[i]->flag_short;
256 if (long_opts[i].has_arg == required_argument)
257 short_opts[si++] = ':';
259 long_opts[i].val = sb_opt[i]->flag_short = hidden_short_opt++;
261 short_opts[si] = '\0';
263 /* we need to handle output ourselves since u-boot provides printf */
267 * walk all of the options the user gave us on the command line,
268 * figure out what u-boot option structure they belong to (via
269 * the unique short val key), and call the appropriate callback.
271 while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
272 for (i = 0; i < num_options; ++i) {
273 if (sb_opt[i]->flag_short == c) {
274 if (sb_opt[i]->callback(state, optarg)) {
275 state->parse_err = sb_opt[i]->flag;
281 if (i == num_options) {
283 * store the faulting flag for later display. we have to
284 * store the flag itself as the getopt parsing itself is
285 * tricky: need to handle the following flags (assume all
286 * of the below are unknown):
287 * -a optopt='a' optind=<next>
288 * -abbbb optopt='a' optind=<this>
289 * -aaaaa optopt='a' optind=<this>
290 * --a optopt=0 optind=<this>
291 * as you can see, it is impossible to determine the exact
292 * faulting flag without doing the parsing ourselves, so
293 * we just report the specific flag that failed.
296 static char parse_err[3] = { '-', 0, '\0', };
297 parse_err[1] = optopt;
298 state->parse_err = parse_err;
300 state->parse_err = argv[optind - 1];
308 void os_dirent_free(struct os_dirent_node *node)
310 struct os_dirent_node *next;
319 int os_dirent_ls(const char *dirname, struct os_dirent_node **headp)
321 struct dirent *entry;
322 struct os_dirent_node *head, *node, *next;
332 dir = opendir(dirname);
336 /* Create a buffer upfront, with typically sufficient size */
337 dirlen = strlen(dirname) + 2;
345 for (node = head = NULL;; node = next) {
347 entry = readdir(dir);
352 next = malloc(sizeof(*node) + strlen(entry->d_name) + 1);
354 os_dirent_free(head);
358 if (dirlen + strlen(entry->d_name) > len) {
359 len = dirlen + strlen(entry->d_name);
361 fname = realloc(fname, len);
365 os_dirent_free(head);
371 strcpy(next->name, entry->d_name);
372 switch (entry->d_type) {
374 next->type = OS_FILET_REG;
377 next->type = OS_FILET_DIR;
380 next->type = OS_FILET_LNK;
383 next->type = OS_FILET_UNKNOWN;
386 snprintf(fname, len, "%s/%s", dirname, next->name);
387 if (!stat(fname, &buf))
388 next->size = buf.st_size;
402 const char *os_dirent_typename[OS_FILET_COUNT] = {
409 const char *os_dirent_get_typename(enum os_dirent_t type)
411 if (type >= OS_FILET_REG && type < OS_FILET_COUNT)
412 return os_dirent_typename[type];
414 return os_dirent_typename[OS_FILET_UNKNOWN];
417 int os_get_filesize(const char *fname, loff_t *size)
422 ret = stat(fname, &buf);
434 void os_puts(const char *str)
440 int os_write_ram_buf(const char *fname)
442 struct sandbox_state *state = state_get_current();
445 fd = open(fname, O_CREAT | O_WRONLY, 0777);
448 ret = write(fd, state->ram_buf, state->ram_size);
450 if (ret != state->ram_size)
456 int os_read_ram_buf(const char *fname)
458 struct sandbox_state *state = state_get_current();
462 ret = os_get_filesize(fname, &size);
465 if (size != state->ram_size)
467 fd = open(fname, O_RDONLY);
471 ret = read(fd, state->ram_buf, state->ram_size);
473 if (ret != state->ram_size)
479 static int make_exec(char *fname, const void *data, int size)
483 strcpy(fname, "/tmp/u-boot.jump.XXXXXX");
487 if (write(fd, data, size) < 0)
490 if (chmod(fname, 0777))
496 static int add_args(char ***argvp, const char *add_args[], int count)
501 for (argv = *argvp, argc = 0; (*argvp)[argc]; argc++)
504 argv = malloc((argc + count + 1) * sizeof(char *));
506 printf("Out of memory for %d argv\n", count);
509 memcpy(argv, *argvp, argc * sizeof(char *));
510 memcpy(argv + argc, add_args, count * sizeof(char *));
511 argv[argc + count] = NULL;
517 int os_jump_to_image(const void *dest, int size)
519 struct sandbox_state *state = state_get_current();
520 char fname[30], mem_fname[30];
522 const char *extra_args[5];
523 char **argv = state->argv;
528 err = make_exec(fname, dest, size);
532 strcpy(mem_fname, "/tmp/u-boot.mem.XXXXXX");
533 fd = mkstemp(mem_fname);
537 err = os_write_ram_buf(mem_fname);
543 extra_args[0] = "-j";
544 extra_args[1] = fname;
545 extra_args[2] = "-m";
546 extra_args[3] = mem_fname;
547 extra_args[4] = "--rm_memory";
548 err = add_args(&argv, extra_args,
549 sizeof(extra_args) / sizeof(extra_args[0]));
554 for (i = 0; argv[i]; i++)
555 printf("%d %s\n", i, argv[i]);
561 err = execv(fname, argv);
566 return unlink(fname);
569 int os_find_u_boot(char *fname, int maxlen)
571 struct sandbox_state *state = state_get_current();
572 const char *progname = state->argv[0];
573 int len = strlen(progname);
577 if (len >= maxlen || len < 4)
580 /* Look for 'u-boot' in the same directory as 'u-boot-spl' */
581 strcpy(fname, progname);
582 if (!strcmp(fname + len - 4, "-spl")) {
583 fname[len - 4] = '\0';
584 fd = os_open(fname, O_RDONLY);
591 /* Look for 'u-boot' in the parent directory of spl/ */
592 p = strstr(fname, "/spl/");
595 fd = os_open(fname, O_RDONLY);
605 int os_spl_to_uboot(const char *fname)
607 struct sandbox_state *state = state_get_current();
608 char *argv[state->argc + 1];
611 memcpy(argv, state->argv, sizeof(char *) * (state->argc + 1));
612 argv[0] = (char *)fname;
613 ret = execv(fname, argv);
617 return unlink(fname);
620 void os_localtime(struct rtc_time *rt)
622 time_t t = time(NULL);
626 rt->tm_sec = tm->tm_sec;
627 rt->tm_min = tm->tm_min;
628 rt->tm_hour = tm->tm_hour;
629 rt->tm_mday = tm->tm_mday;
630 rt->tm_mon = tm->tm_mon + 1;
631 rt->tm_year = tm->tm_year + 1900;
632 rt->tm_wday = tm->tm_wday;
633 rt->tm_yday = tm->tm_yday;
634 rt->tm_isdst = tm->tm_isdst;
642 int os_mprotect_allow(void *start, size_t len)
644 int page_size = getpagesize();
646 /* Move start to the start of a page, len to the end */
647 start = (void *)(((ulong)start) & ~(page_size - 1));
648 len = (len + page_size * 2) & ~(page_size - 1);
650 return mprotect(start, len, PROT_READ | PROT_WRITE);