5 files changed, 66 insertions, 9 deletions
diff --git a/board/kontron/sl-mx6ul/Makefile b/board/kontron/sl-mx6ul/Makefile
index cae273c930..6af5f65450 100644
--- a/board/kontron/sl-mx6ul/Makefile
+++ b/board/kontron/sl-mx6ul/Makefile
@@ -6,3 +6,5 @@ obj-y := spl.o
 else
 obj-y := sl-mx6ul.o
 endif
+
+obj-y += sl-mx6ul-common.o
diff --git a/board/kontron/sl-mx6ul/sl-mx6ul-common.c b/board/kontron/sl-mx6ul/sl-mx6ul-common.c
new file mode 100644
index 0000000000..1f24acdfa3
--- /dev/null
+++ b/board/kontron/sl-mx6ul/sl-mx6ul-common.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2022 Kontron Electronics GmbH
+ */
+
+#include <asm/types.h>
+#include <asm/arch/sys_proto.h>
+
+#include <sl-mx6ul-common.h>
+
+bool sl_mx6ul_is_spi_nor_boot(void)
+{
+	u32 bmode = imx6_src_get_boot_mode();
+
+	/*
+	 * Check if "EEPROM Recovery" enabled and ECSPI2_CONREG not 0x0.
+	 * If this is the case and U-Boot didn't initialize the SPI bus
+	 * yet, we can safely assume that we are booting from SPI NOR.
+	 */
+	if ((bmode & 0x40000000) && readl(0x0200c008))
+		return true;
+
+	return false;
+}
diff --git a/board/kontron/sl-mx6ul/sl-mx6ul-common.h b/board/kontron/sl-mx6ul/sl-mx6ul-common.h
new file mode 100644
index 0000000000..58a0e77a8b
--- /dev/null
+++ b/board/kontron/sl-mx6ul/sl-mx6ul-common.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2022 Kontron Electronics GmbH
+ */
+
+#ifndef __SL_MX6UL_COMMON_H
+#define __SL_MX6UL_COMMON_H
+
+bool sl_mx6ul_is_spi_nor_boot(void);
+
+#endif // __SL_MX6UL_COMMON_H
diff --git a/board/kontron/sl-mx6ul/sl-mx6ul.c b/board/kontron/sl-mx6ul/sl-mx6ul.c
index 79d4d8753b..0f45ea84fc 100644
--- a/board/kontron/sl-mx6ul/sl-mx6ul.c
+++ b/board/kontron/sl-mx6ul/sl-mx6ul.c
@@ -6,8 +6,10 @@
 #include <asm/arch/clock.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/global_data.h>
+#include <env_internal.h>
 #include <fdt_support.h>
 #include <phy.h>
+#include <sl-mx6ul-common.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -83,3 +85,16 @@ int board_init(void)
 
 	return 0;
 }
+
+enum env_location env_get_location(enum env_operation op, int prio)
+{
+	if (prio)
+		return ENVL_UNKNOWN;
+
+	if (sl_mx6ul_is_spi_nor_boot() && CONFIG_IS_ENABLED(ENV_IS_IN_SPI_FLASH))
+		return ENVL_SPI_FLASH;
+	else if (CONFIG_IS_ENABLED(ENV_IS_IN_MMC))
+		return ENVL_MMC;
+
+	return ENVL_NOWHERE;
+}
diff --git a/board/kontron/sl-mx6ul/spl.c b/board/kontron/sl-mx6ul/spl.c
index 12b0352146..ba6915c898 100644
--- a/board/kontron/sl-mx6ul/spl.c
+++ b/board/kontron/sl-mx6ul/spl.c
@@ -17,6 +17,7 @@
 #include <linux/sizes.h>
 #include <linux/errno.h>
 #include <mmc.h>
+#include <sl-mx6ul-common.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -339,26 +340,30 @@ void board_boot_order(u32 *spl_boot_list)
 
 	/*
 	 * The default boot fuse settings use the SD card (MMC1) as primary
-	 * boot device, but allow SPI NOR as a fallback boot device.
-	 * We can't detect the fallback case and spl_boot_device() will return
-	 * BOOT_DEVICE_MMC1 despite the actual boot device being SPI NOR.
-	 * Therefore we try to load U-Boot proper vom SPI NOR after loading
-	 * from MMC has failed.
+	 * boot device, but allow SPI NOR as a fallback boot device. There
+	 * is no proper way to detect if the fallback was used. Therefore
+	 * we read the ECSPI2_CONREG register and see if it differs from the
+	 * reset value 0x0. If that's the case we can assume that the BootROM
+	 * has successfully probed the SPI NOR.
 	 */
-	spl_boot_list[0] = bootdev;
-
 	switch (bootdev) {
 	case BOOT_DEVICE_MMC1:
 	case BOOT_DEVICE_MMC2:
-		spl_boot_list[1] = BOOT_DEVICE_SPI;
+		if (sl_mx6ul_is_spi_nor_boot()) {
+			spl_boot_list[0] = BOOT_DEVICE_SPI;
+			return;
+		}
 		break;
 	}
+
+	spl_boot_list[0] = bootdev;
 }
 
 int board_early_init_f(void)
 {
 	setup_iomux_uart();
-	setup_spi();
+	if (sl_mx6ul_is_spi_nor_boot())
+		setup_spi();
 
 	return 0;
 }