summaryrefslogtreecommitdiff
path: root/cmd/bootflow.c
blob: 313103d277545f8454d435feec555d6721ef4205 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
// SPDX-License-Identifier: GPL-2.0+
/*
 * 'bootflow' command
 *
 * Copyright 2021 Google LLC
 * Written by Simon Glass <sjg@chromium.org>
 */

#include <common.h>
#include <bootdev.h>
#include <bootflow.h>
#include <bootstd.h>
#include <command.h>
#include <console.h>
#include <dm.h>
#include <mapmem.h>

/**
 * report_bootflow_err() - Report where a bootflow failed
 *
 * When a bootflow does not make it to the 'loaded' state, something went wrong.
 * Print a helpful message if there is an error
 *
 * @bflow: Bootflow to process
 * @err: Error code (0 if none)
 */
static void report_bootflow_err(struct bootflow *bflow, int err)
{
	if (!err)
		return;

	/* Indent out to 'Method' */
	printf("     ** ");

	switch (bflow->state) {
	case BOOTFLOWST_BASE:
		printf("No media/partition found");
		break;
	case BOOTFLOWST_MEDIA:
		printf("No partition found");
		break;
	case BOOTFLOWST_PART:
		printf("No filesystem found");
		break;
	case BOOTFLOWST_FS:
		printf("File not found");
		break;
	case BOOTFLOWST_FILE:
		printf("File cannot be loaded");
		break;
	case BOOTFLOWST_READY:
		printf("Ready");
		break;
	case BOOTFLOWST_COUNT:
		break;
	}

	printf(", err=%d\n", err);
}

/**
 * show_bootflow() - Show the status of a bootflow
 *
 * @seq: Bootflow index
 * @bflow: Bootflow to show
 * @errors: True to show the error received, if any
 */
static void show_bootflow(int index, struct bootflow *bflow, bool errors)
{
	printf("%3x  %-11s  %-6s  %-9.9s %4x  %-25.25s %s\n", index,
	       bflow->method->name, bootflow_state_get_name(bflow->state),
	       bflow->dev ? dev_get_uclass_name(dev_get_parent(bflow->dev)) :
	       "(none)", bflow->part, bflow->name, bflow->fname);
	if (errors)
		report_bootflow_err(bflow, bflow->err);
}

static void show_header(void)
{
	printf("Seq  Method       State   Uclass    Part  Name                      Filename\n");
	printf("---  -----------  ------  --------  ----  ------------------------  ----------------\n");
}

static void show_footer(int count, int num_valid)
{
	printf("---  -----------  ------  --------  ----  ------------------------  ----------------\n");
	printf("(%d bootflow%s, %d valid)\n", count, count != 1 ? "s" : "",
	       num_valid);
}

static int do_bootflow_scan(struct cmd_tbl *cmdtp, int flag, int argc,
			    char *const argv[])
{
	struct bootstd_priv *std;
	struct bootflow_iter iter;
	struct udevice *dev;
	struct bootflow bflow;
	bool all = false, boot = false, errors = false, no_global = false;
	bool list = false;
	int num_valid = 0;
	bool has_args;
	int ret, i;
	int flags;

	ret = bootstd_get_priv(&std);
	if (ret)
		return CMD_RET_FAILURE;
	dev = std->cur_bootdev;

	has_args = argc > 1 && *argv[1] == '-';
	if (IS_ENABLED(CONFIG_CMD_BOOTFLOW_FULL)) {
		if (has_args) {
			all = strchr(argv[1], 'a');
			boot = strchr(argv[1], 'b');
			errors = strchr(argv[1], 'e');
			no_global = strchr(argv[1], 'G');
			list = strchr(argv[1], 'l');
			argc--;
			argv++;
		}
		if (argc > 1) {
			const char *label = argv[1];

			if (bootdev_find_by_any(label, &dev))
				return CMD_RET_FAILURE;
		}
	} else {
		if (has_args) {
			printf("Flags not supported: enable CONFIG_BOOTFLOW_FULL\n");
			return CMD_RET_USAGE;
		}
		boot = true;
	}

	std->cur_bootflow = NULL;

	flags = 0;
	if (list)
		flags |= BOOTFLOWF_SHOW;
	if (all)
		flags |= BOOTFLOWF_ALL;
	if (no_global)
		flags |= BOOTFLOWF_SKIP_GLOBAL;

	/*
	 * If we have a device, just scan for bootflows attached to that device
	 */
	if (IS_ENABLED(CONFIG_CMD_BOOTFLOW_FULL) && dev) {
		if (list) {
			printf("Scanning for bootflows in bootdev '%s'\n",
			       dev->name);
			show_header();
		}
		bootdev_clear_bootflows(dev);
		for (i = 0,
		     ret = bootflow_scan_bootdev(dev, &iter, flags, &bflow);
		     i < 1000 && ret != -ENODEV;
		     i++, ret = bootflow_scan_next(&iter, &bflow)) {
			bflow.err = ret;
			if (!ret)
				num_valid++;
			ret = bootdev_add_bootflow(&bflow);
			if (ret) {
				printf("Out of memory\n");
				return CMD_RET_FAILURE;
			}
			if (list)
				show_bootflow(i, &bflow, errors);
			if (boot && !bflow.err)
				bootflow_run_boot(&iter, &bflow);
		}
	} else {
		if (list) {
			printf("Scanning for bootflows in all bootdevs\n");
			show_header();
		}
		bootstd_clear_glob();

		for (i = 0,
		     ret = bootflow_scan_first(&iter, flags, &bflow);
		     i < 1000 && ret != -ENODEV;
		     i++, ret = bootflow_scan_next(&iter, &bflow)) {
			bflow.err = ret;
			if (!ret)
				num_valid++;
			ret = bootdev_add_bootflow(&bflow);
			if (ret) {
				printf("Out of memory\n");
				return CMD_RET_FAILURE;
			}
			if (list)
				show_bootflow(i, &bflow, errors);
			if (boot && !bflow.err)
				bootflow_run_boot(&iter, &bflow);
		}
	}
	bootflow_iter_uninit(&iter);
	if (list)
		show_footer(i, num_valid);

	return 0;
}

#ifdef CONFIG_CMD_BOOTFLOW_FULL
static int do_bootflow_list(struct cmd_tbl *cmdtp, int flag, int argc,
			    char *const argv[])
{
	struct bootstd_priv *std;
	struct udevice *dev;
	struct bootflow *bflow;
	int num_valid = 0;
	bool errors = false;
	int ret, i;

	if (argc > 1 && *argv[1] == '-')
		errors = strchr(argv[1], 'e');

	ret = bootstd_get_priv(&std);
	if (ret)
		return CMD_RET_FAILURE;
	dev = std->cur_bootdev;

	/* If we have a device, just list bootflows attached to that device */
	if (dev) {
		printf("Showing bootflows for bootdev '%s'\n", dev->name);
		show_header();
		for (ret = bootdev_first_bootflow(dev, &bflow), i = 0;
		     !ret;
		     ret = bootdev_next_bootflow(&bflow), i++) {
			num_valid += bflow->state == BOOTFLOWST_READY;
			show_bootflow(i, bflow, errors);
		}
	} else {
		printf("Showing all bootflows\n");
		show_header();
		for (ret = bootflow_first_glob(&bflow), i = 0;
		     !ret;
		     ret = bootflow_next_glob(&bflow), i++) {
			num_valid += bflow->state == BOOTFLOWST_READY;
			show_bootflow(i, bflow, errors);
		}
	}
	show_footer(i, num_valid);

	return 0;
}

static int do_bootflow_select(struct cmd_tbl *cmdtp, int flag, int argc,
			      char *const argv[])
{
	struct bootstd_priv *std;
	struct bootflow *bflow, *found;
	struct udevice *dev;
	const char *name;
	char *endp;
	int seq, i;
	int ret;

	ret = bootstd_get_priv(&std);
	if (ret)
		return CMD_RET_FAILURE;
;
	if (argc < 2) {
		std->cur_bootflow = NULL;
		return 0;
	}
	dev = std->cur_bootdev;

	name = argv[1];
	seq = simple_strtol(name, &endp, 16);
	found = NULL;

	/*
	 * If we have a bootdev device, only allow selection of bootflows
	 * attached to that device
	 */
	if (dev) {
		for (ret = bootdev_first_bootflow(dev, &bflow), i = 0;
		     !ret;
		     ret = bootdev_next_bootflow(&bflow), i++) {
			if (*endp ? !strcmp(bflow->name, name) : i == seq) {
				found = bflow;
				break;
			}
		}
	} else {
		for (ret = bootflow_first_glob(&bflow), i = 0;
		     !ret;
		     ret = bootflow_next_glob(&bflow), i++) {
			if (*endp ? !strcmp(bflow->name, name) : i == seq) {
				found = bflow;
				break;
			}
		}
	}

	if (!found) {
		printf("Cannot find bootflow '%s' ", name);
		if (dev)
			printf("in bootdev '%s' ", dev->name);
		printf("(err=%d)\n", ret);
		return CMD_RET_FAILURE;
	}
	std->cur_bootflow = found;

	return 0;
}

static int do_bootflow_info(struct cmd_tbl *cmdtp, int flag, int argc,
			    char *const argv[])
{
	struct bootstd_priv *std;
	struct bootflow *bflow;
	bool dump = false;
	int ret;

	if (argc > 1 && *argv[1] == '-')
		dump = strchr(argv[1], 'd');

	ret = bootstd_get_priv(&std);
	if (ret)
		return CMD_RET_FAILURE;

	if (!std->cur_bootflow) {
		printf("No bootflow selected\n");
		return CMD_RET_FAILURE;
	}
	bflow = std->cur_bootflow;

	printf("Name:      %s\n", bflow->name);
	printf("Device:    %s\n", bflow->dev->name);
	printf("Block dev: %s\n", bflow->blk ? bflow->blk->name : "(none)");
	printf("Method:    %s\n", bflow->method->name);
	printf("State:     %s\n", bootflow_state_get_name(bflow->state));
	printf("Partition: %d\n", bflow->part);
	printf("Subdir:    %s\n", bflow->subdir ? bflow->subdir : "(none)");
	printf("Filename:  %s\n", bflow->fname);
	printf("Buffer:    %lx\n", (ulong)map_to_sysmem(bflow->buf));
	printf("Size:      %x (%d bytes)\n", bflow->size, bflow->size);
	printf("Error:     %d\n", bflow->err);
	if (dump && bflow->buf) {
		/* Set some sort of maximum on the size */
		int size = min(bflow->size, 10 << 10);
		int i;

		printf("Contents:\n\n");
		for (i = 0; i < size; i++) {
			putc(bflow->buf[i]);
			if (!(i % 128) && ctrlc()) {
				printf("...interrupted\n");
				break;
			}
		}
	}

	return 0;
}

static int do_bootflow_boot(struct cmd_tbl *cmdtp, int flag, int argc,
			    char *const argv[])
{
	struct bootstd_priv *std;
	struct bootflow *bflow;
	int ret;

	ret = bootstd_get_priv(&std);
	if (ret)
		return CMD_RET_FAILURE;

	/*
	 * Require a current bootflow. Users can use 'bootflow scan -b' to
	 * automatically scan and boot, if needed.
	 */
	if (!std->cur_bootflow) {
		printf("No bootflow selected\n");
		return CMD_RET_FAILURE;
	}
	bflow = std->cur_bootflow;
	ret = bootflow_run_boot(NULL, bflow);
	if (ret)
		return CMD_RET_FAILURE;

	return 0;
}
#endif /* CONFIG_CMD_BOOTFLOW_FULL */

#ifdef CONFIG_SYS_LONGHELP
static char bootflow_help_text[] =
#ifdef CONFIG_CMD_BOOTFLOW_FULL
	"scan [-abeGl] [bdev]  - scan for valid bootflows (-l list, -a all, -e errors, -b boot, -G no global)\n"
	"bootflow list [-e]             - list scanned bootflows (-e errors)\n"
	"bootflow select [<num>|<name>] - select a bootflow\n"
	"bootflow info [-d]             - show info on current bootflow (-d dump bootflow)\n"
	"bootflow boot                  - boot current bootflow (or first available if none selected)";
#else
	"scan - boot first available bootflow\n";
#endif
#endif /* CONFIG_SYS_LONGHELP */

U_BOOT_CMD_WITH_SUBCMDS(bootflow, "Boot flows", bootflow_help_text,
	U_BOOT_SUBCMD_MKENT(scan, 3, 1, do_bootflow_scan),
#ifdef CONFIG_CMD_BOOTFLOW_FULL
	U_BOOT_SUBCMD_MKENT(list, 2, 1, do_bootflow_list),
	U_BOOT_SUBCMD_MKENT(select, 2, 1, do_bootflow_select),
	U_BOOT_SUBCMD_MKENT(info, 2, 1, do_bootflow_info),
	U_BOOT_SUBCMD_MKENT(boot, 1, 1, do_bootflow_boot)
#endif
);