[PATCH 03/10] imx: imx8qm/qxp: add get_board_serial

Peng Fan
2020-05-05T12:28:39Z

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)
{
--
2.16.4