1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2018 Stefan Roese <sr@denx.de>
9 #include <env_internal.h>
17 #include <spi_flash.h>
18 #include <linux/delay.h>
19 #include <linux/stringify.h>
20 #include <u-boot/crc.h>
22 #include <linux/ctype.h>
25 #define MT76XX_AGPIO_CFG 0x1000003c
27 #define FACTORY_DATA_OFFS 0xc0000
28 #define FACTORY_DATA_SECT_SIZE 0x10000
29 #if ((CONFIG_ENV_OFFSET_REDUND + CONFIG_ENV_SIZE) > FACTORY_DATA_OFFS)
30 #error "U-Boot image with environment too big (overlapping with factory-data)!"
32 #define FACTORY_DATA_USER_OFFS 0x140
33 #define FACTORY_DATA_SIZE 0x1f0
34 #define FACTORY_DATA_CRC_LEN (FACTORY_DATA_SIZE - \
35 FACTORY_DATA_USER_OFFS - sizeof(u32))
37 #define FACTORY_DATA_MAGIC 0xCAFEBABE
39 struct factory_data_values {
41 u8 wifi_mac[6]; /* offs: 0x004: binary value */
43 u8 eth_mac[6]; /* offs: 0x028: binary value */
44 u8 pad_3[FACTORY_DATA_USER_OFFS - 4 - 6 - 30 - 6];
45 /* User values start here at offset 0x140 */
49 char ipr_id[UUID_STR_LEN]; /* UUID as string w/o ending \0 */
50 char hqv_id[UUID_STR_LEN]; /* UUID as string w/o ending \0 */
51 char unielec_id[UUID_STR_LEN]; /* UUID as string w/o ending \0 */
54 int board_early_init_f(void)
56 void __iomem *gpio_mode;
58 /* Configure digital vs analog GPIOs */
59 gpio_mode = ioremap_nocache(MT76XX_AGPIO_CFG, 0x100);
60 iowrite32(0x00fe01ff, gpio_mode);
65 static bool prepare_uuid_var(const char *fd_ptr, const char *env_var_name,
68 char str[UUID_STR_LEN + 1] = { 0 }; /* Enough for UUID stuff */
69 bool env_updated = false;
73 memcpy(str, fd_ptr, UUID_STR_LEN);
75 /* Convert non-ascii character to 'X' */
76 for (i = 0; i < UUID_STR_LEN; i++) {
77 if (!(isascii(str[i]) && isprint(str[i])))
81 env = env_get(env_var_name);
82 if (strcmp(env, str)) {
83 env_set(env_var_name, str);
90 static void factory_data_env_config(void)
92 struct factory_data_values *fd;
95 char str[UUID_STR_LEN + 1]; /* Enough for UUID stuff */
102 buf = malloc(FACTORY_DATA_SIZE);
104 printf("F-Data:Unable to allocate buffer\n");
109 * Get values from factory-data area in SPI NOR
111 sf = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
112 CONFIG_SF_DEFAULT_CS,
113 CONFIG_SF_DEFAULT_SPEED,
114 CONFIG_SF_DEFAULT_MODE);
116 printf("F-Data:Unable to access SPI NOR flash\n");
120 ret = spi_flash_read(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SIZE,
123 printf("F-Data:Unable to read factory-data from SPI NOR\n");
127 fd = (struct factory_data_values *)buf;
129 if (fd->magic != FACTORY_DATA_MAGIC)
130 printf("F-Data:Magic value not correct\n");
132 crc = crc32(0, (u8 *)&fd->magic, FACTORY_DATA_CRC_LEN);
134 printf("F-Data:CRC not correct\n");
136 printf("F-Data:factory-data version %x detected\n",
139 /* Handle wifi_mac env variable */
141 sprintf(str, "%pM", ptr);
142 if (!is_valid_ethaddr(ptr))
143 printf("F-Data:Invalid MAC addr: wifi_mac %s\n", str);
145 env = env_get("wifiaddr");
146 if (strcmp(env, str)) {
147 env_set("wifiaddr", str);
151 /* Handle eth_mac env variable */
153 sprintf(str, "%pM", ptr);
154 if (!is_valid_ethaddr(ptr))
155 printf("F-Data:Invalid MAC addr: eth_mac %s\n", str);
157 env = env_get("ethaddr");
158 if (strcmp(env, str)) {
159 env_set("ethaddr", str);
163 /* Handle UUID env variables */
164 env_updated |= prepare_uuid_var(fd->ipr_id, "linuxmoduleid", 'X');
165 env_updated |= prepare_uuid_var(fd->hqv_id, "linuxmodulehqvid", '\0');
166 env_updated |= prepare_uuid_var(fd->unielec_id,
167 "linuxmoduleunielecid", '\0');
169 /* Check if the environment was updated and needs to get stored */
170 if (env_updated != 0) {
171 printf("F-Data:Values don't match env values -> saving\n");
174 debug("F-Data:Values match current env values\n");
184 int board_late_init(void)
186 factory_data_env_config();
191 static void copy_or_generate_uuid(char *fd_ptr, const char *env_var_name)
193 char str[UUID_STR_LEN + 1] = { 0 }; /* Enough for UUID stuff */
196 /* Don't use the UUID dest place, as the \0 char won't fit */
197 env = env_get(env_var_name);
199 strncpy(str, env, UUID_STR_LEN);
201 gen_rand_uuid_str(str, UUID_STR_FORMAT_STD);
203 memcpy(fd_ptr, str, UUID_STR_LEN);
207 * Helper function to provide some sane factory-data values for testing
208 * purpose, when these values are not programmed correctly
210 int do_fd_write(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
212 struct factory_data_values *fd;
213 struct spi_flash *sf;
215 int ret = CMD_RET_FAILURE;
217 buf = malloc(FACTORY_DATA_SECT_SIZE);
219 printf("F-Data:Unable to allocate buffer\n");
220 return CMD_RET_FAILURE;
223 sf = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
224 CONFIG_SF_DEFAULT_CS,
225 CONFIG_SF_DEFAULT_SPEED,
226 CONFIG_SF_DEFAULT_MODE);
228 printf("F-Data:Unable to access SPI NOR flash\n");
232 /* Generate the factory-data struct */
234 /* Fist read complete sector into buffer */
235 ret = spi_flash_read(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SECT_SIZE,
238 printf("F-Data:spi_flash_read failed (%d)\n", ret);
242 fd = (struct factory_data_values *)buf;
243 fd->magic = FACTORY_DATA_MAGIC;
246 /* Use existing MAC and UUID values or generate some random ones */
247 if (!eth_env_get_enetaddr("wifiaddr", fd->wifi_mac)) {
248 net_random_ethaddr(fd->wifi_mac);
249 /* to get a different seed value for the MAC address */
253 if (!eth_env_get_enetaddr("ethaddr", fd->eth_mac))
254 net_random_ethaddr(fd->eth_mac);
256 copy_or_generate_uuid(fd->ipr_id, "linuxmoduleid");
257 copy_or_generate_uuid(fd->hqv_id, "linuxmodulehqvid");
258 copy_or_generate_uuid(fd->unielec_id, "linuxmoduleunielecid");
260 printf("New factory-data values:\n");
261 printf("wifiaddr=%pM\n", fd->wifi_mac);
262 printf("ethaddr=%pM\n", fd->eth_mac);
265 * We don't have the \0 char at the end, so we need to specify the
266 * length in the printf format instead
268 printf("linuxmoduleid=%." __stringify(UUID_STR_LEN) "s\n", fd->ipr_id);
269 printf("linuxmodulehqvid=%." __stringify(UUID_STR_LEN) "s\n",
271 printf("linuxmoduleunielecid=%." __stringify(UUID_STR_LEN) "s\n",
274 fd->crc = crc32(0, (u8 *)&fd->magic, FACTORY_DATA_CRC_LEN);
276 ret = spi_flash_erase(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SECT_SIZE);
278 printf("F-Data:spi_flash_erase failed (%d)\n", ret);
282 ret = spi_flash_write(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SECT_SIZE,
285 printf("F-Data:spi_flash_write failed (%d)\n", ret);
289 printf("F-Data:factory-data values written to SPI NOR flash\n");
300 #ifndef CONFIG_SPL_BUILD
302 fd_write, 1, 0, do_fd_write,
303 "Write test factory-data values to SPI NOR",