Add get_board_serial support, the info could be got from fuse.
Signed-off-by: Peng Fan peng.fan@nxp.com --- arch/arm/mach-imx/imx8/cpu.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c index 2c79bd0091..3bd0dee025 100644 --- a/arch/arm/mach-imx/imx8/cpu.c +++ b/arch/arm/mach-imx/imx8/cpu.c @@ -19,6 +19,7 @@ #include <asm/arch-imx/cpu.h> #include <asm/armv8/cpu.h> #include <asm/armv8/mmu.h> +#include <asm/setup.h> #include <asm/mach-imx/boot_mode.h>
DECLARE_GLOBAL_DATA_PTR; @@ -162,6 +163,37 @@ enum boot_device get_boot_device(void) return boot_dev; }
+#ifdef CONFIG_SERIAL_TAG +#define FUSE_UNIQUE_ID_WORD0 16 +#define FUSE_UNIQUE_ID_WORD1 17 +void get_board_serial(struct tag_serialnr *serialnr) +{ + sc_err_t err; + u32 val1 = 0, val2 = 0; + u32 word1, word2; + + if (!serialnr) + return; + + word1 = FUSE_UNIQUE_ID_WORD0; + word2 = FUSE_UNIQUE_ID_WORD1; + + err = sc_misc_otp_fuse_read(-1, word1, &val1); + if (err != SC_ERR_NONE) { + printf("%s fuse %d read error: %d\n", __func__, word1, err); + return; + } + + err = sc_misc_otp_fuse_read(-1, word2, &val2); + if (err != SC_ERR_NONE) { + printf("%s fuse %d read error: %d\n", __func__, word2, err); + return; + } + serialnr->low = val1; + serialnr->high = val2; +} +#endif /*CONFIG_SERIAL_TAG*/ + #ifdef CONFIG_ENV_IS_IN_MMC __weak int board_mmc_get_env_dev(int devno) {