arm: imx: initial support for apalis imx6

This adds board support for the Toradex module family Apalis iMX6.
The familiy consists of a module with i.MX6 Dual, i.MX6 Quad with
commercial and industrial temperature range.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>

1 files changed, 98 insertions, 0 deletions

diff --git a/board/toradex/apalis_imx6/do_fuse.c b/board/toradex/apalis_imx6/do_fuse.c
new file mode 100644
index 0000000000..cff07e9e69
--- /dev/null
+++ b/board/toradex/apalis_imx6/do_fuse.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2014-2016, Toradex AG
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Helpers for i.MX OTP fusing during module production
+*/
+
+#include <common.h>
+#ifndef CONFIG_SPL_BUILD
+#include <console.h>
+#include <fuse.h>
+
+static int mfgr_fuse(void)
+{
+	unsigned val, val6;
+
+	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 CMD_RET_FAILURE;
+	}
+	/* boot cfg */
+	fuse_prog(0, 5, 0x00005072);
+	/* BT_FUSE_SEL */
+	fuse_prog(0, 6, 0x00000010);
+	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;
+}
+
+int do_updt_fuse(cmd_tbl_t *cmdtp, int flag, int argc,
+		char * const argv[])
+{
+	unsigned val;
+	int ret;
+	int confirmed = argc >= 1 && !strcmp(argv[1], "-y");
+
+	/* can be used in scripts for command availability check */
+	if (argc >= 1 && !strcmp(argv[1], "-n"))
+		return CMD_RET_SUCCESS;
+
+	/* boot cfg */
+	fuse_sense(0, 5, &val);
+	printf("Fuse 0, 5: %8x\n", val);
+	if (val & 0x10) {
+		puts("Fast boot mode already fused, no need to fuse\n");
+		return CMD_RET_SUCCESS;
+	}
+	if (!confirmed) {
+		puts("Warning: Programming fuses is an irreversible operation!\n"
+				"         Updating to fast boot mode prevents easy\n"
+				"         downgrading to previous BSP versions.\n"
+				"\nReally perform this fuse programming? <y/N>\n");
+		if (!confirm_yesno())
+			return CMD_RET_FAILURE;
+	}
+	puts("Fusing fast boot mode...\n");
+	ret = fuse_prog(0, 5, 0x00005072);
+	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",
+	""
+);
+
+U_BOOT_CMD(
+	updt_fuse, 2, 0, do_updt_fuse,
+	"OTP fusing during module update",
+	"updt_fuse [-n] [-y] - boot cfg fast boot mode fusing"
+);
+#endif /* CONFIG_SPL_BUILD */