imx6_fuse: add helpers for OTP fusing during module production

3 files changed, 72 insertions, 3 deletions

diff --git a/board/toradex/apalis_imx6/Makefile b/board/toradex/apalis_imx6/Makefile
index 0fe2c608e7..40ee4d6fc9 100644
--- a/board/toradex/apalis_imx6/Makefile
+++ b/board/toradex/apalis_imx6/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/config.mk
 
 LIB    = $(obj)lib$(BOARD).o
 
-COBJS  := apalis_imx6.o pf0100.o
+COBJS  := apalis_imx6.o pf0100.o do_fuse.o
 
 SRCS   := $(COBJS:.o=.c)
 OBJS   := $(addprefix $(obj),$(COBJS))
diff --git a/board/toradex/apalis_imx6/do_fuse.c b/board/toradex/apalis_imx6/do_fuse.c
new file mode 100644
index 0000000000..55ac7af18e
--- /dev/null
+++ b/board/toradex/apalis_imx6/do_fuse.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2014, Toradex AG
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Helpers for i.MX OTP fusing during module production
+*/
+
+#include <common.h>
+#include <fuse.h>
+
+static unsigned mfgr_fuse(void);
+unsigned mfgr_fuse(void)
+{
+	unsigned val, val6;
+	unsigned mac_hi, mac_lo;
+	uchar mac_id[6];
+
+	fuse_sense(0, 5, &val);
+	printf("Fuse 0, 5: %8x\n", val);
+	fuse_sense(0, 6, &val6);
+	printf("Fuse 0, 6: %8x\n", val6);
+	fuse_sense(4, 3, &val);
+	printf("Fuse 4, 3: %8x\n", val);
+	fuse_sense(4, 2, &val);
+	printf("Fuse 4, 2: %8x\n", val);
+	if(val6 & 0x10)
+	{
+		puts("BT_FUSE_SEL already fused, will do nothing\n");
+		return 1;
+	}
+
+	if (!eth_getenv_enetaddr("ethaddr", mac_id))
+	{
+		puts("ethaddr not set or not valid in environment, will do nothing\n");
+		return 1;
+	}
+	mac_hi = (mac_id[0] << 8) + mac_id[1];
+	mac_lo = (mac_id[2] << 24) + (mac_id[3] << 16) + (mac_id[4] << 8) + mac_id[5];
+
+	/* boot cfg */
+	fuse_prog(0, 5, 0x00005062);
+	/* BT_FUSE_SEL */
+	fuse_prog(0, 6, 0x00000010);
+	/* MAC addr */
+	fuse_prog(4, 3, mac_hi);
+	fuse_prog(4, 2, mac_lo);
+
+	return 0;
+}
+
+int do_mfgr_fuse(cmd_tbl_t *cmdtp, int flag, int argc,
+		char * const argv[])
+{
+	puts("Fusing...\n");
+	if(!mfgr_fuse())
+		puts("done.\n");
+	else
+		puts("failed.\n");
+	return 0;
+}
+
+U_BOOT_CMD(
+	mfgr_fuse, 1, 0, do_mfgr_fuse,
+	"OTP fusing during module production\n"
+	"requires the environment variable ethaddr to be set\n",
+	""
+);
diff --git a/include/configs/apalis-imx6.h b/include/configs/apalis-imx6.h
index 9291de0ea2..6e60d50ac4 100644
--- a/include/configs/apalis-imx6.h
+++ b/include/configs/apalis-imx6.h
@@ -197,12 +197,11 @@
 	"bootcmd=run emmcboot ; "\
 		"setenv stdout serial,vga ; " \
 		"echo ; echo emmcboot failed ; " \
-		"usb start; setenv stdin serial,usbkbd\0" \
+		"run nfsboot\0" \
 	"bootscript=fatload mmc 1:1 10008000 6x_bootscript && source 10008000\0" \
 	"console=ttymxc0\0" \
 	"defargs=enable_wait_mode=off vmalloc=400M\0" \
 	"emmcboot=" EMMC_BOOTCMD "\0" \
-	"ethaddr=00:14:2D:00:00:00\0" \
 	"mmcargs=ip=off root=/dev/mmcblk0p2 rw,noatime rootfstype=ext3 " \
 		"rootwait\0" \
 	"mmc_kernel_size=0x4000\0" \