diff mbox series

[U-Boot,14/41] imx8: implement get_board_serial

Message ID 20180528122526.20597-15-peng.fan@nxp.com
State Superseded
Delegated to: Stefano Babic
Headers show
Series imx: add i.MX8QXP support | expand

Commit Message

Peng Fan May 28, 2018, 12:24 p.m. UTC 
Implement get_board_serial

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 arch/arm/mach-imx/imx8/cpu.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c
index 2b58f510b4..f24ae6ecb8 100644
--- a/arch/arm/mach-imx/imx8/cpu.c
+++ b/arch/arm/mach-imx/imx8/cpu.c
@@ -11,6 +11,7 @@ 
 #include <asm/arch/sci/sci.h>
 #include <asm/arch-imx/cpu.h>
 #include <asm/mach-imx/boot_mode.h>
+#include <asm/setup.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -208,6 +209,37 @@  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;
+	sc_ipc_t ipc;
+	u32 val1 = 0, val2 = 0;
+	u32 word1, word2;
+
+	ipc = gd->arch.ipc_channel_handle;
+
+	word1 = FUSE_UNIQUE_ID_WORD0;
+	word2 = FUSE_UNIQUE_ID_WORD1;
+
+	err = sc_misc_otp_fuse_read(ipc, 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(ipc, 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)
 {