[U-Boot] [PATCH 1/5] arm: socfpga: Add checking function on searching boot device

[tien.fong.chee at intel.com]

From: Tien Fong Chee <tien.fong.chee at intel.com>

Function for checking boot device type, which is required for locating
flash where U-boot image, FPGA design are stored.

Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
---
 arch/arm/mach-socfpga/include/mach/misc.h |   19 +++++++++++++++++++
 arch/arm/mach-socfpga/misc_arria10.c      |   22 ++++++++++++++++++++++
 2 files changed, 41 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-socfpga/include/mach/misc.h b/arch/arm/mach-socfpga/include/mach/misc.h
index 0b65783..b219aac 100644
--- a/arch/arm/mach-socfpga/include/mach/misc.h
+++ b/arch/arm/mach-socfpga/include/mach/misc.h
@@ -14,6 +14,24 @@ struct bsel {
 	const char	*name;
 };
 
+enum {
+	BOOT_DEVICE_RAM,
+	BOOT_DEVICE_MMC1,
+	BOOT_DEVICE_MMC2,
+	BOOT_DEVICE_MMC2_2,
+	BOOT_DEVICE_NAND,
+	BOOT_DEVICE_ONENAND,
+	BOOT_DEVICE_NOR,
+	BOOT_DEVICE_UART,
+	BOOT_DEVICE_SPI,
+	BOOT_DEVICE_USB,
+	BOOT_DEVICE_SATA,
+	BOOT_DEVICE_I2C,
+	BOOT_DEVICE_BOARD,
+	BOOT_DEVICE_DFU,
+	BOOT_DEVICE_NONE
+};
+
 extern struct bsel bsel_str[];
 
 #ifdef CONFIG_FPGA
@@ -26,6 +44,7 @@ static inline void socfpga_fpga_add(void) {}
 unsigned int dedicated_uart_com_port(const void *blob);
 unsigned int shared_uart_com_port(const void *blob);
 unsigned int uart_com_port(const void *blob);
+u32 boot_device(void);
 #endif
 
 #endif /* _MISC_H_ */
diff --git a/arch/arm/mach-socfpga/misc_arria10.c b/arch/arm/mach-socfpga/misc_arria10.c
index 9d751f6..069a0a6 100644
--- a/arch/arm/mach-socfpga/misc_arria10.c
+++ b/arch/arm/mach-socfpga/misc_arria10.c
@@ -235,6 +235,28 @@ unsigned int uart_com_port(const void *blob)
 	return shared_uart_com_port(blob);
 }
 
+u32 boot_device(void)
+{
+	const u32 bsel = readl(&sysmgr_regs->bootinfo);
+
+	switch (SYSMGR_GET_BOOTINFO_BSEL(bsel)) {
+	case 0x1:	/* FPGA (HPS2FPGA Bridge) */
+		return BOOT_DEVICE_RAM;
+	case 0x2:	/* NAND Flash (1.8V) */
+	case 0x3:	/* NAND Flash (3.0V) */
+		return BOOT_DEVICE_NAND;
+	case 0x4:	/* SD/MMC External Transceiver (1.8V) */
+	case 0x5:	/* SD/MMC Internal Transceiver (3.0V) */
+		return BOOT_DEVICE_MMC1;
+	case 0x6:	/* QSPI Flash (1.8V) */
+	case 0x7:	/* QSPI Flash (3.0V) */
+		return BOOT_DEVICE_SPI;
+	default:
+		printf("Invalid boot device (bsel=%08x)!\n", bsel);
+		hang();
+	}
+}
+
 /*
  * Print CPU information
  */
-- 
1.7.7.4