diff options
Diffstat (limited to 'board/st')
| -rw-r--r-- | board/st/stm32f429-discovery/stm32f429-discovery.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/board/st/stm32f429-discovery/stm32f429-discovery.c b/board/st/stm32f429-discovery/stm32f429-discovery.c index 2dd5d935d9..f418186c1e 100644 --- a/board/st/stm32f429-discovery/stm32f429-discovery.c +++ b/board/st/stm32f429-discovery/stm32f429-discovery.c @@ -285,3 +285,22 @@ int board_init(void) return 0; } + +#ifdef CONFIG_MISC_INIT_R +int misc_init_r(void) +{ + char serialno[25]; + uint32_t u_id_low, u_id_mid, u_id_high; + + if (!getenv("serial#")) { + u_id_low = readl(&STM32_U_ID->u_id_low); + u_id_mid = readl(&STM32_U_ID->u_id_mid); + u_id_high = readl(&STM32_U_ID->u_id_high); + sprintf(serialno, "%08x%08x%08x", + u_id_high, u_id_mid, u_id_low); + setenv("serial#", serialno); + } + + return 0; +} +#endif |