colibri_imx7: add do_fuse command

Used during manufacturing for setting the boot fuses.

3 files changed, 57 insertions, 0 deletions

diff --git a/board/toradex/colibri_imx7/Kconfig b/board/toradex/colibri_imx7/Kconfig
index 2323183039..ddaf6cbcc6 100644
--- a/board/toradex/colibri_imx7/Kconfig
+++ b/board/toradex/colibri_imx7/Kconfig
@@ -12,4 +12,13 @@ config SYS_SOC
 config SYS_CONFIG_NAME
 	default "colibri_imx7"
 
+menuconfig TRDX_CMD_IMX_MFGR
+	bool "Enable factory testing commands for Toradex iMX 6 modules"
+	help
+	  This adds the commands
+	    mfgr_fuse: OTP fusing during module production
+	    pf0100_otp_prog- Program the OTP fuses on the PMIC PF0100
+	  If executed on already fused modules they don't change any fuse setting.
+	default y
+
 endif
diff --git a/board/toradex/colibri_imx7/Makefile b/board/toradex/colibri_imx7/Makefile
index 4b18dff37b..0e13f2440e 100644
--- a/board/toradex/colibri_imx7/Makefile
+++ b/board/toradex/colibri_imx7/Makefile
@@ -4,6 +4,7 @@
 #
 
 obj-y  := colibri_imx7.o
+obj-$(CONFIG_TRDX_CMD_IMX_MFGR)  += do_fuse.o
 
 extra-$(CONFIG_USE_PLUGIN) :=  plugin.bin
 $(obj)/plugin.bin: $(obj)/plugin.o
diff --git a/board/toradex/colibri_imx7/do_fuse.c b/board/toradex/colibri_imx7/do_fuse.c
new file mode 100644
index 0000000000..13f3efa97c
--- /dev/null
+++ b/board/toradex/colibri_imx7/do_fuse.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2016, Toradex AG
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Helpers for i.MX OTP fusing during module production
+*/
+
+#include <common.h>
+#include <fuse.h>
+
+static int mfgr_fuse(void)
+{
+	unsigned val, val6;
+
+	fuse_sense(1, 3, &val);
+	printf("Fuse 1, 3: %8x\n", val);
+	if(val & 0x10000000)
+	{
+		puts("BT_FUSE_SEL already fused, will do nothing\n");
+		return CMD_RET_FAILURE;
+	}
+	/* BT_FUSE_SEL & boot cfg */
+	fuse_prog(1, 3, 0x10003400);
+	return CMD_RET_SUCCESS;
+}
+
+int do_mfgr_fuse(cmd_tbl_t *cmdtp, int flag, int argc,
+		char * const argv[])
+{
+	int ret;
+	puts("Fusing...\n");
+	ret = mfgr_fuse();
+	if (ret == CMD_RET_SUCCESS)
+		puts("done.\n");
+	else
+		puts("failed.\n");
+	return ret;
+}
+
+U_BOOT_CMD(
+	mfgr_fuse, 1, 0, do_mfgr_fuse,
+	"OTP fusing during module production\n",
+	""
+);