a74f5ec7ba0a37e00663c14be7c410ebf1caa36c
[platform/kernel/u-boot.git] / arch / sandbox / cpu / start.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (c) 2011-2012 The Chromium OS Authors.
4  */
5
6 #include <common.h>
7 #include <command.h>
8 #include <dm/root.h>
9 #include <efi_loader.h>
10 #include <errno.h>
11 #include <init.h>
12 #include <log.h>
13 #include <os.h>
14 #include <cli.h>
15 #include <sort.h>
16 #include <asm/getopt.h>
17 #include <asm/global_data.h>
18 #include <asm/io.h>
19 #include <asm/malloc.h>
20 #include <asm/sections.h>
21 #include <asm/state.h>
22 #include <linux/ctype.h>
23
24 DECLARE_GLOBAL_DATA_PTR;
25
26 static char **os_argv;
27
28 /* Compare two options so that they can be sorted into alphabetical order */
29 static int h_compare_opt(const void *p1, const void *p2)
30 {
31         const struct sandbox_cmdline_option *opt1 = p1;
32         const struct sandbox_cmdline_option *opt2 = p2;
33         const char *str1, *str2;
34         char flag1[2], flag2[2];
35
36         opt1 = *(struct sandbox_cmdline_option **)p1;
37         opt2 = *(struct sandbox_cmdline_option **)p2;
38         flag1[1] = '\0';
39         flag2[1] = '\0';
40
41         *flag1 = opt1->flag_short < 0x100 ? opt1->flag_short : '\0';
42         *flag2 = opt2->flag_short < 0x100 ? opt2->flag_short : '\0';
43
44         str1 = *flag1 ? flag1 : opt1->flag;
45         str2 = *flag2 ? flag2 : opt2->flag;
46
47         /*
48          * Force lower-case flags to come before upper-case ones. We only
49          * support upper-case for short flags.
50          */
51         if (isalpha(*str1) && isalpha(*str2) &&
52             tolower(*str1) == tolower(*str2))
53                 return isupper(*str1) - isupper(*str2);
54
55         return strcasecmp(str1, str2);
56 }
57
58 int sandbox_early_getopt_check(void)
59 {
60         struct sandbox_state *state = state_get_current();
61         struct sandbox_cmdline_option **sb_opt =
62                 __u_boot_sandbox_option_start();
63         size_t num_options = __u_boot_sandbox_option_count();
64         size_t i;
65         int max_arg_len, max_noarg_len;
66         struct sandbox_cmdline_option **sorted_opt;
67         int size;
68
69         /* parse_err will be a string of the faulting option */
70         if (!state->parse_err)
71                 return 0;
72
73         if (strcmp(state->parse_err, "help")) {
74                 printf("u-boot: error: failed while parsing option: %s\n"
75                         "\ttry running with --help for more information.\n",
76                         state->parse_err);
77                 os_exit(1);
78         }
79
80         printf(
81                 "u-boot, a command line test interface to U-Boot\n\n"
82                 "Usage: u-boot [options]\n"
83                 "Options:\n");
84
85         max_arg_len = 0;
86         for (i = 0; i < num_options; ++i)
87                 max_arg_len = max((int)strlen(sb_opt[i]->flag), max_arg_len);
88         max_noarg_len = max_arg_len + 7;
89
90         /* Sort the options */
91         size = sizeof(*sorted_opt) * num_options;
92         sorted_opt = os_malloc(size);
93         if (!sorted_opt) {
94                 printf("No memory to sort options\n");
95                 os_exit(1);
96         }
97         memcpy(sorted_opt, sb_opt, size);
98         qsort(sorted_opt, num_options, sizeof(*sorted_opt), h_compare_opt);
99
100         for (i = 0; i < num_options; ++i) {
101                 struct sandbox_cmdline_option *opt = sorted_opt[i];
102
103                 /* first output the short flag if it has one */
104                 if (opt->flag_short >= 0x100)
105                         printf("      ");
106                 else
107                         printf("  -%c, ", opt->flag_short);
108
109                 /* then the long flag */
110                 if (opt->has_arg)
111                         printf("--%-*s <arg> ", max_arg_len, opt->flag);
112                 else
113                         printf("--%-*s", max_noarg_len, opt->flag);
114
115                 /* finally the help text */
116                 printf("  %s\n", opt->help);
117         }
118
119         os_exit(0);
120 }
121
122 int misc_init_f(void)
123 {
124         return sandbox_early_getopt_check();
125 }
126
127 static int sandbox_cmdline_cb_help(struct sandbox_state *state, const char *arg)
128 {
129         /* just flag to sandbox_early_getopt_check to show usage */
130         return 1;
131 }
132 SANDBOX_CMDLINE_OPT_SHORT(help, 'h', 0, "Display help");
133
134 #ifndef CONFIG_SPL_BUILD
135 int sandbox_main_loop_init(void)
136 {
137         struct sandbox_state *state = state_get_current();
138
139         /* Execute command if required */
140         if (state->cmd || state->run_distro_boot) {
141                 int retval = 0;
142
143                 cli_init();
144
145 #ifdef CONFIG_CMDLINE
146                 if (state->cmd)
147                         retval = run_command_list(state->cmd, -1, 0);
148
149                 if (state->run_distro_boot)
150                         retval = cli_simple_run_command("run distro_bootcmd",
151                                                         0);
152 #endif
153                 if (!state->interactive)
154                         os_exit(retval);
155         }
156
157         return 0;
158 }
159 #endif
160
161 static int sandbox_cmdline_cb_boot(struct sandbox_state *state,
162                                       const char *arg)
163 {
164         state->run_distro_boot = true;
165         return 0;
166 }
167 SANDBOX_CMDLINE_OPT_SHORT(boot, 'b', 0, "Run distro boot commands");
168
169 static int sandbox_cmdline_cb_command(struct sandbox_state *state,
170                                       const char *arg)
171 {
172         state->cmd = arg;
173         return 0;
174 }
175 SANDBOX_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
176
177 static int sandbox_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
178 {
179         state->fdt_fname = arg;
180         return 0;
181 }
182 SANDBOX_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
183
184 static int sandbox_cmdline_cb_default_fdt(struct sandbox_state *state,
185                                           const char *arg)
186 {
187         const char *fmt = "%s.dtb";
188         char *fname;
189         int len;
190
191         len = strlen(state->argv[0]) + strlen(fmt) + 1;
192         fname = os_malloc(len);
193         if (!fname)
194                 return -ENOMEM;
195         snprintf(fname, len, fmt, state->argv[0]);
196         state->fdt_fname = fname;
197
198         return 0;
199 }
200 SANDBOX_CMDLINE_OPT_SHORT(default_fdt, 'D', 0,
201                 "Use the default u-boot.dtb control FDT in U-Boot directory");
202
203 static int sandbox_cmdline_cb_test_fdt(struct sandbox_state *state,
204                                        const char *arg)
205 {
206         const char *fmt = "/arch/sandbox/dts/test.dtb";
207         char *p;
208         char *fname;
209         int len;
210
211         len = strlen(state->argv[0]) + strlen(fmt) + 1;
212         fname = os_malloc(len);
213         if (!fname)
214                 return -ENOMEM;
215         strcpy(fname, state->argv[0]);
216         p = strrchr(fname, '/');
217         if (!p)
218                 p = fname + strlen(fname);
219         len -= p - fname;
220         snprintf(p, len, fmt);
221         state->fdt_fname = fname;
222
223         return 0;
224 }
225 SANDBOX_CMDLINE_OPT_SHORT(test_fdt, 'T', 0,
226                           "Use the test.dtb control FDT in U-Boot directory");
227
228 static int sandbox_cmdline_cb_interactive(struct sandbox_state *state,
229                                           const char *arg)
230 {
231         state->interactive = true;
232         return 0;
233 }
234
235 SANDBOX_CMDLINE_OPT_SHORT(interactive, 'i', 0, "Enter interactive mode");
236
237 static int sandbox_cmdline_cb_jump(struct sandbox_state *state,
238                                    const char *arg)
239 {
240         /* Remember to delete this U-Boot image later */
241         state->jumped_fname = arg;
242
243         return 0;
244 }
245 SANDBOX_CMDLINE_OPT_SHORT(jump, 'j', 1, "Jumped from previous U-Boot");
246
247 static int sandbox_cmdline_cb_memory(struct sandbox_state *state,
248                                      const char *arg)
249 {
250         int err;
251
252         /* For now assume we always want to write it */
253         state->write_ram_buf = true;
254         state->ram_buf_fname = arg;
255
256         err = os_read_ram_buf(arg);
257         if (err) {
258                 printf("Failed to read RAM buffer '%s': %d\n", arg, err);
259                 return err;
260         }
261         state->ram_buf_read = true;
262
263         return 0;
264 }
265 SANDBOX_CMDLINE_OPT_SHORT(memory, 'm', 1,
266                           "Read/write ram_buf memory contents from file");
267
268 static int sandbox_cmdline_cb_rm_memory(struct sandbox_state *state,
269                                         const char *arg)
270 {
271         state->ram_buf_rm = true;
272
273         return 0;
274 }
275 SANDBOX_CMDLINE_OPT(rm_memory, 0, "Remove memory file after reading");
276
277 static int sandbox_cmdline_cb_state(struct sandbox_state *state,
278                                     const char *arg)
279 {
280         state->state_fname = arg;
281         return 0;
282 }
283 SANDBOX_CMDLINE_OPT_SHORT(state, 's', 1, "Specify the sandbox state FDT");
284
285 static int sandbox_cmdline_cb_read(struct sandbox_state *state,
286                                    const char *arg)
287 {
288         state->read_state = true;
289         return 0;
290 }
291 SANDBOX_CMDLINE_OPT_SHORT(read, 'r', 0, "Read the state FDT on startup");
292
293 static int sandbox_cmdline_cb_write(struct sandbox_state *state,
294                                     const char *arg)
295 {
296         state->write_state = true;
297         return 0;
298 }
299 SANDBOX_CMDLINE_OPT_SHORT(write, 'w', 0, "Write state FDT on exit");
300
301 static int sandbox_cmdline_cb_ignore_missing(struct sandbox_state *state,
302                                              const char *arg)
303 {
304         state->ignore_missing_state_on_read = true;
305         return 0;
306 }
307 SANDBOX_CMDLINE_OPT_SHORT(ignore_missing, 'n', 0,
308                           "Ignore missing state on read");
309
310 static int sandbox_cmdline_cb_show_lcd(struct sandbox_state *state,
311                                        const char *arg)
312 {
313         state->show_lcd = true;
314         return 0;
315 }
316 SANDBOX_CMDLINE_OPT_SHORT(show_lcd, 'l', 0,
317                           "Show the sandbox LCD display");
318
319 static int sandbox_cmdline_cb_double_lcd(struct sandbox_state *state,
320                                          const char *arg)
321 {
322         state->double_lcd = true;
323
324         return 0;
325 }
326 SANDBOX_CMDLINE_OPT_SHORT(double_lcd, 'K', 0,
327                           "Double the LCD display size in each direction");
328
329 static const char *term_args[STATE_TERM_COUNT] = {
330         "raw-with-sigs",
331         "raw",
332         "cooked",
333 };
334
335 static int sandbox_cmdline_cb_terminal(struct sandbox_state *state,
336                                        const char *arg)
337 {
338         int i;
339
340         for (i = 0; i < STATE_TERM_COUNT; i++) {
341                 if (!strcmp(arg, term_args[i])) {
342                         state->term_raw = i;
343                         return 0;
344                 }
345         }
346
347         printf("Unknown terminal setting '%s' (", arg);
348         for (i = 0; i < STATE_TERM_COUNT; i++)
349                 printf("%s%s", i ? ", " : "", term_args[i]);
350         puts(")\n");
351
352         return 1;
353 }
354 SANDBOX_CMDLINE_OPT_SHORT(terminal, 't', 1,
355                           "Set terminal to raw/cooked mode");
356
357 static int sandbox_cmdline_cb_verbose(struct sandbox_state *state,
358                                       const char *arg)
359 {
360         state->show_test_output = true;
361         return 0;
362 }
363 SANDBOX_CMDLINE_OPT_SHORT(verbose, 'v', 0, "Show test output");
364
365 static int sandbox_cmdline_cb_log_level(struct sandbox_state *state,
366                                         const char *arg)
367 {
368         state->default_log_level = simple_strtol(arg, NULL, 10);
369
370         return 0;
371 }
372 SANDBOX_CMDLINE_OPT_SHORT(log_level, 'L', 1,
373                           "Set log level (0=panic, 7=debug)");
374
375 static int sandbox_cmdline_cb_unittests(struct sandbox_state *state,
376                                         const char *arg)
377 {
378         state->run_unittests = true;
379
380         return 0;
381 }
382 SANDBOX_CMDLINE_OPT_SHORT(unittests, 'u', 0, "Run unit tests");
383
384 static int sandbox_cmdline_cb_select_unittests(struct sandbox_state *state,
385                                                const char *arg)
386 {
387         state->select_unittests = arg;
388
389         return 0;
390 }
391 SANDBOX_CMDLINE_OPT_SHORT(select_unittests, 'k', 1, "Select unit tests to run");
392
393 static int sandbox_cmdline_cb_signals(struct sandbox_state *state,
394                                       const char *arg)
395 {
396         state->handle_signals = true;
397
398         return 0;
399 }
400 SANDBOX_CMDLINE_OPT_SHORT(signals, 'S', 0,
401                           "Handle signals (such as SIGSEGV) in sandbox");
402
403 static int sandbox_cmdline_cb_autoboot_keyed(struct sandbox_state *state,
404                                              const char *arg)
405 {
406         state->autoboot_keyed = true;
407
408         return 0;
409 }
410 SANDBOX_CMDLINE_OPT(autoboot_keyed, 0, "Allow keyed autoboot");
411
412 static void setup_ram_buf(struct sandbox_state *state)
413 {
414         /* Zero the RAM buffer if we didn't read it, to keep valgrind happy */
415         if (!state->ram_buf_read)
416                 memset(state->ram_buf, '\0', state->ram_size);
417
418         gd->arch.ram_buf = state->ram_buf;
419         gd->ram_size = state->ram_size;
420 }
421
422 void state_show(struct sandbox_state *state)
423 {
424         char **p;
425
426         printf("Arguments:\n");
427         for (p = state->argv; *p; p++)
428                 printf("%s ", *p);
429         printf("\n");
430 }
431
432 void __efi_runtime EFIAPI efi_reset_system(
433                 enum efi_reset_type reset_type,
434                 efi_status_t reset_status,
435                 unsigned long data_size, void *reset_data)
436 {
437         os_fd_restore();
438         os_relaunch(os_argv);
439 }
440
441 void sandbox_reset(void)
442 {
443         /* Do this here while it still has an effect */
444         os_fd_restore();
445         if (state_uninit())
446                 os_exit(2);
447
448         /* Restart U-Boot */
449         os_relaunch(os_argv);
450 }
451
452 int main(int argc, char *argv[])
453 {
454         struct sandbox_state *state;
455         void * text_base;
456         gd_t data;
457         int size;
458         int ret;
459
460         text_base = os_find_text_base();
461
462         /*
463          * This must be the first invocation of os_malloc() to have
464          * state->ram_buf in the low 4 GiB.
465          */
466         ret = state_init();
467         if (ret)
468                 goto err;
469
470         /*
471          * Copy argv[] so that we can pass the arguments in the original
472          * sequence when resetting the sandbox.
473          */
474         size = sizeof(char *) * (argc + 1);
475         os_argv = os_malloc(size);
476         if (!os_argv)
477                 os_exit(1);
478         memcpy(os_argv, argv, size);
479
480         memset(&data, '\0', sizeof(data));
481         gd = &data;
482         gd->arch.text_base = text_base;
483
484         state = state_get_current();
485         if (os_parse_args(state, argc, argv))
486                 return 1;
487
488         /* Remove old memory file if required */
489         if (state->ram_buf_rm && state->ram_buf_fname) {
490                 os_unlink(state->ram_buf_fname);
491                 state->write_ram_buf = false;
492                 state->ram_buf_fname = NULL;
493         }
494
495         ret = sandbox_read_state(state, state->state_fname);
496         if (ret)
497                 goto err;
498
499         if (state->handle_signals) {
500                 ret = os_setup_signal_handlers();
501                 if (ret)
502                         goto err;
503         }
504
505 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
506         gd->malloc_base = CONFIG_MALLOC_F_ADDR;
507 #endif
508 #if CONFIG_IS_ENABLED(LOG)
509         gd->default_log_level = state->default_log_level;
510 #endif
511         setup_ram_buf(state);
512
513         /*
514          * Set up the relocation offset here, since sandbox symbols are always
515          * relocated by the OS before sandbox is entered.
516          */
517         gd->reloc_off = (ulong)gd->arch.text_base;
518
519         /* sandbox test: log functions called before log_init in board_init_f */
520         log_debug("debug: %s\n", __func__);
521
522         /* Do pre- and post-relocation init */
523         board_init_f(0);
524
525         board_init_r(gd->new_gd, 0);
526
527         /* NOTREACHED - board_init_r() does not return */
528         return 0;
529
530 err:
531         printf("Error %d\n", ret);
532         return 1;
533 }