summaryrefslogtreecommitdiff
path: root/board/gardena/smart-gateway-mt7688/board.c
blob: 6e11077977a3d05555e391b375937905905b7446 (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
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2018 Stefan Roese <sr@denx.de>
 */

#include <common.h>
#include <environment.h>
#include <led.h>
#include <net.h>
#include <spi.h>
#include <spi_flash.h>
#include <uuid.h>
#include <linux/ctype.h>
#include <linux/io.h>

#define MT76XX_AGPIO_CFG	0x1000003c

#define FACTORY_DATA_OFFS	0xc0000
#define FACTORY_DATA_SECT_SIZE	0x10000
#if ((CONFIG_ENV_OFFSET_REDUND + CONFIG_ENV_SIZE_REDUND) > FACTORY_DATA_OFFS)
#error "U-Boot image with environment too big (overlapping with factory-data)!"
#endif
#define FACTORY_DATA_USER_OFFS	0x140
#define FACTORY_DATA_SIZE	0x1f0
#define FACTORY_DATA_CRC_LEN	(FACTORY_DATA_SIZE -			\
				 FACTORY_DATA_USER_OFFS - sizeof(u32))

#define FACTORY_DATA_MAGIC	0xCAFEBABE

struct factory_data_values {
	u8 pad_1[4];
	u8 wifi_mac[6];		/* offs: 0x004: binary value */
	u8 pad_2[30];
	u8 eth_mac[6];		/* offs: 0x028: binary value */
	u8 pad_3[FACTORY_DATA_USER_OFFS - 4 - 6 - 30 - 6];
	/* User values start here at offset 0x140 */
	u32 crc;
	u32 magic;
	u32 version;
	char ipr_id[UUID_STR_LEN];	/* UUID as string w/o ending \0 */
	char hqv_id[UUID_STR_LEN];	/* UUID as string w/o ending \0 */
	char unielec_id[UUID_STR_LEN];	/* UUID as string w/o ending \0 */
};

int board_early_init_f(void)
{
	void __iomem *gpio_mode;

	/* Configure digital vs analog GPIOs */
	gpio_mode = ioremap_nocache(MT76XX_AGPIO_CFG, 0x100);
	iowrite32(0x00fe01ff, gpio_mode);

	return 0;
}

static bool prepare_uuid_var(const char *fd_ptr, const char *env_var_name,
			     char errorchar)
{
	char str[UUID_STR_LEN + 1] = { 0 };	/* Enough for UUID stuff */
	bool env_updated = false;
	char *env;
	int i;

	memcpy(str, fd_ptr, UUID_STR_LEN);

	/* Convert non-ascii character to 'X' */
	for (i = 0; i < UUID_STR_LEN; i++) {
		if (!(isascii(str[i]) && isprint(str[i])))
			str[i] = errorchar;
	}

	env = env_get(env_var_name);
	if (strcmp(env, str)) {
		env_set(env_var_name, str);
		env_updated = true;
	}

	return env_updated;
}

static void factory_data_env_config(void)
{
	struct factory_data_values *fd;
	struct spi_flash *sf;
	int env_updated = 0;
	char str[UUID_STR_LEN + 1];	/* Enough for UUID stuff */
	char *env;
	u8 *buf;
	u32 crc;
	int ret;
	u8 *ptr;

	buf = malloc(FACTORY_DATA_SIZE);
	if (!buf) {
		printf("F-Data:Unable to allocate buffer\n");
		return;
	}

	/*
	 * Get values from factory-data area in SPI NOR
	 */
	sf = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
			     CONFIG_SF_DEFAULT_CS,
			     CONFIG_SF_DEFAULT_SPEED,
			     CONFIG_SF_DEFAULT_MODE);
	if (!sf) {
		printf("F-Data:Unable to access SPI NOR flash\n");
		goto err_free;
	}

	ret = spi_flash_read(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SIZE,
			     (void *)buf);
	if (ret) {
		printf("F-Data:Unable to read factory-data from SPI NOR\n");
		goto err_spi_flash;
	}

	fd = (struct factory_data_values *)buf;

	if (fd->magic != FACTORY_DATA_MAGIC)
		printf("F-Data:Magic value not correct\n");

	crc = crc32(0, (u8 *)&fd->magic, FACTORY_DATA_CRC_LEN);
	if (crc != fd->crc)
		printf("F-Data:CRC not correct\n");
	else
		printf("F-Data:factory-data version %x detected\n",
		       fd->version);

	/* Handle wifi_mac env variable */
	ptr = fd->wifi_mac;
	sprintf(str, "%pM", ptr);
	if (!is_valid_ethaddr(ptr))
		printf("F-Data:Invalid MAC addr: wifi_mac %s\n", str);

	env = env_get("wifiaddr");
	if (strcmp(env, str)) {
		env_set("wifiaddr", str);
		env_updated = 1;
	}

	/* Handle eth_mac env variable */
	ptr = fd->eth_mac;
	sprintf(str, "%pM", ptr);
	if (!is_valid_ethaddr(ptr))
		printf("F-Data:Invalid MAC addr: eth_mac %s\n", str);

	env = env_get("ethaddr");
	if (strcmp(env, str)) {
		env_set("ethaddr", str);
		env_updated = 1;
	}

	/* Handle UUID env variables */
	env_updated |= prepare_uuid_var(fd->ipr_id, "linuxmoduleid", 'X');
	env_updated |= prepare_uuid_var(fd->hqv_id, "linuxmodulehqvid", '\0');
	env_updated |= prepare_uuid_var(fd->unielec_id,
					"linuxmoduleunielecid", '\0');

	/* Check if the environment was updated and needs to get stored */
	if (env_updated != 0) {
		printf("F-Data:Values don't match env values -> saving\n");
		env_save();
	} else {
		debug("F-Data:Values match current env values\n");
	}

err_spi_flash:
	spi_flash_free(sf);

err_free:
	free(buf);
}

int board_late_init(void)
{
	if (IS_ENABLED(CONFIG_LED))
		led_default_state();

	factory_data_env_config();

	return 0;
}

static void copy_or_generate_uuid(char *fd_ptr, const char *env_var_name)
{
	char str[UUID_STR_LEN + 1] = { 0 };	/* Enough for UUID stuff */
	char *env;

	/* Don't use the UUID dest place, as the \0 char won't fit */
	env = env_get(env_var_name);
	if (env)
		strncpy(str, env, UUID_STR_LEN);
	else
		gen_rand_uuid_str(str, UUID_STR_FORMAT_STD);

	memcpy(fd_ptr, str, UUID_STR_LEN);
}

/*
 * Helper function to provide some sane factory-data values for testing
 * purpose, when these values are not programmed correctly
 */
int do_fd_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	struct factory_data_values *fd;
	struct spi_flash *sf;
	u8 *buf;
	int ret = CMD_RET_FAILURE;

	buf = malloc(FACTORY_DATA_SECT_SIZE);
	if (!buf) {
		printf("F-Data:Unable to allocate buffer\n");
		return CMD_RET_FAILURE;
	}

	sf = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
			     CONFIG_SF_DEFAULT_CS,
			     CONFIG_SF_DEFAULT_SPEED,
			     CONFIG_SF_DEFAULT_MODE);
	if (!sf) {
		printf("F-Data:Unable to access SPI NOR flash\n");
		goto err_free;
	}

	/* Generate the factory-data struct */

	/* Fist read complete sector into buffer */
	ret = spi_flash_read(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SECT_SIZE,
			     (void *)buf);
	if (ret) {
		printf("F-Data:spi_flash_read failed (%d)\n", ret);
		goto err_spi_flash;
	}

	fd = (struct factory_data_values *)buf;
	fd->magic = FACTORY_DATA_MAGIC;
	fd->version = 0x1;

	/* Use existing MAC and UUID values or generate some random ones */
	if (!eth_env_get_enetaddr("wifiaddr", fd->wifi_mac)) {
		net_random_ethaddr(fd->wifi_mac);
		/* to get a different seed value for the MAC address */
		mdelay(10);
	}

	if (!eth_env_get_enetaddr("ethaddr", fd->eth_mac))
		net_random_ethaddr(fd->eth_mac);

	copy_or_generate_uuid(fd->ipr_id, "linuxmoduleid");
	copy_or_generate_uuid(fd->hqv_id, "linuxmodulehqvid");
	copy_or_generate_uuid(fd->unielec_id, "linuxmoduleunielecid");

	printf("New factory-data values:\n");
	printf("wifiaddr=%pM\n", fd->wifi_mac);
	printf("ethaddr=%pM\n", fd->eth_mac);

	/*
	 * We don't have the \0 char at the end, so we need to specify the
	 * length in the printf format instead
	 */
	printf("linuxmoduleid=%." __stringify(UUID_STR_LEN) "s\n", fd->ipr_id);
	printf("linuxmodulehqvid=%." __stringify(UUID_STR_LEN) "s\n",
	       fd->hqv_id);
	printf("linuxmoduleunielecid=%." __stringify(UUID_STR_LEN) "s\n",
	       fd->unielec_id);

	fd->crc = crc32(0, (u8 *)&fd->magic, FACTORY_DATA_CRC_LEN);

	ret = spi_flash_erase(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SECT_SIZE);
	if (ret) {
		printf("F-Data:spi_flash_erase failed (%d)\n", ret);
		goto err_spi_flash;
	}

	ret = spi_flash_write(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SECT_SIZE,
			      buf);
	if (ret) {
		printf("F-Data:spi_flash_write failed (%d)\n", ret);
		goto err_spi_flash;
	}

	printf("F-Data:factory-data values written to SPI NOR flash\n");

err_spi_flash:
	spi_flash_free(sf);

err_free:
	free(buf);

	return ret;
}

U_BOOT_CMD(
	fd_write,	1,	0,	do_fd_write,
	"Write test factory-data values to SPI NOR",
	"\n"
);