diff options
Diffstat (limited to 'arch/arm/mach-stm32mp/soc.c')
| -rw-r--r-- | arch/arm/mach-stm32mp/soc.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/mach-stm32mp/soc.c b/arch/arm/mach-stm32mp/soc.c index d7b03590b8c..ff70ebe9746 100644 --- a/arch/arm/mach-stm32mp/soc.c +++ b/arch/arm/mach-stm32mp/soc.c @@ -4,8 +4,10 @@ */ #include <env.h> +#include <misc.h> #include <asm/arch/sys_proto.h> #include <dm/device.h> +#include <dm/uclass.h> /* used when CONFIG_DISPLAY_CPUINFO is activated */ int print_cpuinfo(void) @@ -17,3 +19,30 @@ int print_cpuinfo(void) return 0; } + +int setup_serial_number(void) +{ + char serial_string[25]; + u32 otp[3] = {0, 0, 0 }; + struct udevice *dev; + int ret; + + if (env_get("serial#")) + return 0; + + ret = uclass_get_device_by_driver(UCLASS_MISC, + DM_DRIVER_GET(stm32mp_bsec), + &dev); + if (ret) + return ret; + + ret = misc_read(dev, STM32_BSEC_SHADOW(BSEC_OTP_SERIAL), + otp, sizeof(otp)); + if (ret < 0) + return ret; + + sprintf(serial_string, "%08X%08X%08X", otp[0], otp[1], otp[2]); + env_set("serial#", serial_string); + + return 0; +} |