1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2018 Stefan Roese <sr@denx.de>
9 #include <env_internal.h>
16 #include <spi_flash.h>
17 #include <u-boot/crc.h>
19 #include <linux/ctype.h>
22 #define MT76XX_AGPIO_CFG 0x1000003c
24 #define FACTORY_DATA_OFFS 0xc0000
25 #define FACTORY_DATA_SECT_SIZE 0x10000
26 #if ((CONFIG_ENV_OFFSET_REDUND + CONFIG_ENV_SIZE) > FACTORY_DATA_OFFS)
27 #error "U-Boot image with environment too big (overlapping with factory-data)!"
29 #define FACTORY_DATA_USER_OFFS 0x140
30 #define FACTORY_DATA_SIZE 0x1f0
31 #define FACTORY_DATA_CRC_LEN (FACTORY_DATA_SIZE - \
32 FACTORY_DATA_USER_OFFS - sizeof(u32))
34 #define FACTORY_DATA_MAGIC 0xCAFEBABE
36 struct factory_data_values {
38 u8 wifi_mac[6]; /* offs: 0x004: binary value */
40 u8 eth_mac[6]; /* offs: 0x028: binary value */
41 u8 pad_3[FACTORY_DATA_USER_OFFS - 4 - 6 - 30 - 6];
42 /* User values start here at offset 0x140 */
46 char ipr_id[UUID_STR_LEN]; /* UUID as string w/o ending \0 */
47 char hqv_id[UUID_STR_LEN]; /* UUID as string w/o ending \0 */
48 char unielec_id[UUID_STR_LEN]; /* UUID as string w/o ending \0 */
51 int board_early_init_f(void)
53 void __iomem *gpio_mode;
55 /* Configure digital vs analog GPIOs */
56 gpio_mode = ioremap_nocache(MT76XX_AGPIO_CFG, 0x100);
57 iowrite32(0x00fe01ff, gpio_mode);
62 static bool prepare_uuid_var(const char *fd_ptr, const char *env_var_name,
65 char str[UUID_STR_LEN + 1] = { 0 }; /* Enough for UUID stuff */
66 bool env_updated = false;
70 memcpy(str, fd_ptr, UUID_STR_LEN);
72 /* Convert non-ascii character to 'X' */
73 for (i = 0; i < UUID_STR_LEN; i++) {
74 if (!(isascii(str[i]) && isprint(str[i])))
78 env = env_get(env_var_name);
79 if (strcmp(env, str)) {
80 env_set(env_var_name, str);
87 static void factory_data_env_config(void)
89 struct factory_data_values *fd;
92 char str[UUID_STR_LEN + 1]; /* Enough for UUID stuff */
99 buf = malloc(FACTORY_DATA_SIZE);
101 printf("F-Data:Unable to allocate buffer\n");
106 * Get values from factory-data area in SPI NOR
108 sf = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
109 CONFIG_SF_DEFAULT_CS,
110 CONFIG_SF_DEFAULT_SPEED,
111 CONFIG_SF_DEFAULT_MODE);
113 printf("F-Data:Unable to access SPI NOR flash\n");
117 ret = spi_flash_read(sf, FACTORY_DATA_OFFS, FACTORY_DATA_SIZE,
120 printf("F-Data:Unable to read factory-data from SPI NOR\n");
124 fd = (struct factory_data_values *)buf;
126 if (fd->magic != FACTORY_DATA_MAGIC)
127 printf("F-Data:Magic value not correct\n");
129 crc = crc32(0, (u8 *)&fd->magic, FACTORY_DATA_CRC_LEN);
131 printf("F-Data:CRC not correct\n");
133 printf("F-Data:factory-data version %x detected\n",
136 /* Handle wifi_mac env variable */
138 sprintf(str, "%pM", ptr);
139 if (!is_valid_ethaddr(ptr))
140 printf("F-Data:Invalid MAC addr: wifi_mac %s\n", str);
142 env = env_get("wifiaddr");
143 if (strcmp(env, str)) {
144 env_set("wifiaddr", str);
148 /* Handle eth_mac env variable */
150 sprintf(str, "%pM", ptr);
151 if (!is_valid_ethaddr(ptr))
152 printf("F-Data:Invalid MAC addr: eth_mac %s\n", str);
154 env = env_get("ethaddr");
155 if (strcmp(env, str)) {
156 env_set("ethaddr", str);
160 /* Handle UUID env variables */
161 env_updated |= prepare_uuid_var(fd->ipr_id, "linuxmoduleid", 'X');
162 env_updated |= prepare_uuid_var(fd->hqv_id, "linuxmodulehqvid", '\0');
163 env_updated |= prepare_uuid_var(fd->unielec_id,
164 "linuxmoduleunielecid", '\0');
166 /* Check if the environment was updated and needs to get stored */
167 if (env_updated != 0) {
168 printf("F-Data:Values don't match env values -> saving\n");
171 debug("F-Data:Values match current env values\n");
181 int board_late_init(void)
183 if (IS_ENABLED(CONFIG_LED))
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",