7 files changed, 80 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-meson/axg.h b/arch/arm/include/asm/arch-meson/axg.h
index 28a38b7..d293f2a 100644
--- a/arch/arm/include/asm/arch-meson/axg.h
+++ b/arch/arm/include/asm/arch-meson/axg.h
@@ -20,6 +20,7 @@
 #define AXG_AO_SEC_GP_CFG4	AXG_AO_ADDR(0x94)
 #define AXG_AO_SEC_GP_CFG5	AXG_AO_ADDR(0x95)
 
+#define AXG_AO_BOOT_DEVICE	0xF
 #define AXG_AO_MEM_SIZE_MASK	0xFFFF0000
 #define AXG_AO_MEM_SIZE_SHIFT	16
 #define AXG_AO_BL31_RSVMEM_SIZE_MASK	0xFFFF0000
diff --git a/arch/arm/include/asm/arch-meson/boot.h b/arch/arm/include/asm/arch-meson/boot.h
new file mode 100644
index 0000000..a90fe55
--- /dev/null
+++ b/arch/arm/include/asm/arch-meson/boot.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2016 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#ifndef __MESON_BOOT_H__
+#define __MESON_BOOT_H__
+
+/* Boot device */
+#define BOOT_DEVICE_RESERVED    0
+#define BOOT_DEVICE_EMMC        1
+#define BOOT_DEVICE_NAND        2
+#define BOOT_DEVICE_SPI         3
+#define BOOT_DEVICE_SD          4
+#define BOOT_DEVICE_USB         5
+
+int meson_get_boot_device(void);
+
+#endif /* __MESON_BOOT_H__ */
diff --git a/arch/arm/include/asm/arch-meson/gx.h b/arch/arm/include/asm/arch-meson/gx.h
index 4bc9475..b781ba9 100644
--- a/arch/arm/include/asm/arch-meson/gx.h
+++ b/arch/arm/include/asm/arch-meson/gx.h
@@ -21,6 +21,7 @@
 #define GX_AO_SEC_GP_CFG4	GX_AO_ADDR(0x94)
 #define GX_AO_SEC_GP_CFG5	GX_AO_ADDR(0x95)
 
+#define GX_AO_BOOT_DEVICE	0xF
 #define GX_AO_MEM_SIZE_MASK	0xFFFF0000
 #define GX_AO_MEM_SIZE_SHIFT	16
 #define GX_AO_BL31_RSVMEM_SIZE_MASK	0xFFFF0000
diff --git a/arch/arm/mach-meson/Kconfig b/arch/arm/mach-meson/Kconfig
index deddcc5..11077bc 100644
--- a/arch/arm/mach-meson/Kconfig
+++ b/arch/arm/mach-meson/Kconfig
@@ -8,6 +8,7 @@ config MESON64_COMMON
 	select DM_SERIAL
 	select SYSCON
 	select REGMAP
+	select BOARD_LATE_INIT
 	imply CMD_DM
 
 config MESON_GX
diff --git a/arch/arm/mach-meson/board-axg.c b/arch/arm/mach-meson/board-axg.c
index 014b25d..173905e 100644
--- a/arch/arm/mach-meson/board-axg.c
+++ b/arch/arm/mach-meson/board-axg.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <asm/arch/boot.h>
 #include <asm/arch/eth.h>
 #include <asm/arch/axg.h>
 #include <asm/arch/mem.h>
@@ -15,6 +16,11 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+int meson_get_boot_device(void)
+{
+	return readl(AXG_AO_SEC_GP_CFG0) & AXG_AO_BOOT_DEVICE;
+}
+
 /* Configure the reserved memory zones exported by the secure registers
  * into EFI and DTB reserved memory entries.
  */
diff --git a/arch/arm/mach-meson/board-common.c b/arch/arm/mach-meson/board-common.c
index 8c4f307..8c41301 100644
--- a/arch/arm/mach-meson/board-common.c
+++ b/arch/arm/mach-meson/board-common.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <asm/arch/boot.h>
 #include <linux/libfdt.h>
 #include <linux/err.h>
 #include <asm/arch/mem.h>
@@ -66,6 +67,50 @@ void meson_board_add_reserved_memory(void *fdt, u64 start, u64 size)
 	}
 }
 
+static void meson_set_boot_source(void)
+{
+	const char *source;
+
+	switch (meson_get_boot_device()) {
+	case BOOT_DEVICE_EMMC:
+		source = "emmc";
+		break;
+
+	case BOOT_DEVICE_NAND:
+		source = "nand";
+		break;
+
+	case BOOT_DEVICE_SPI:
+		source = "spi";
+		break;
+
+	case BOOT_DEVICE_SD:
+		source = "sd";
+		break;
+
+	case BOOT_DEVICE_USB:
+		source = "usb";
+		break;
+
+	default:
+		source = "unknown";
+	}
+
+	env_set("boot_source", source);
+}
+
+__weak int meson_board_late_init(void)
+{
+	return 0;
+}
+
+int board_late_init(void)
+{
+	meson_set_boot_source();
+
+	return meson_board_late_init();
+}
+
 void reset_cpu(ulong addr)
 {
 	psci_system_reset();
diff --git a/arch/arm/mach-meson/board-gx.c b/arch/arm/mach-meson/board-gx.c
index f1397f8..e41552d 100644
--- a/arch/arm/mach-meson/board-gx.c
+++ b/arch/arm/mach-meson/board-gx.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <asm/arch/boot.h>
 #include <asm/arch/eth.h>
 #include <asm/arch/gx.h>
 #include <asm/arch/mem.h>
@@ -15,6 +16,11 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+int meson_get_boot_device(void)
+{
+	return readl(GX_AO_SEC_GP_CFG0) & GX_AO_BOOT_DEVICE;
+}
+
 /* Configure the reserved memory zones exported by the secure registers
  * into EFI and DTB reserved memory entries.
  */