From: Peng Fan <peng.fan@nxp.com>
Date: Tue, 5 May 2020 12:28:39 +0000 (+0800)
Subject: imx: imx8qm/qxp: add get_board_serial
X-Git-Tag: v2020.07-rc2~3^2~7
X-Git-Url: https://git.librecmc.org/?p=oweals%2Fu-boot.git;a=commitdiff_plain;h=8103767256dde5e0ca949790f0896268ae0832d3

imx: imx8qm/qxp: add get_board_serial

Add get_board_serial support, the info could be got from fuse.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

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)
 {