arm: socfpga: spl: Add support for selecting boot device from BSEL

Rework spl_boot_device() such that it reads the BSEL settings from
system manager and decides from where to load U-Boot based on this
information.

Signed-off-by: Marek Vasut <marex@denx.de>

diff --git a/arch/arm/mach-socfpga/spl.c b/arch/arm/mach-socfpga/spl.c
index 7f0ebeb9fdc3e07b43cdf2cce7ac1afb6a259903..82570f86174fd8b003158102cea0a0196aa4fead 100644 (file)
--- a/arch/arm/mach-socfpga/spl.c
+++ b/arch/arm/mach-socfpga/spl.c
@@ -28,19 +28,32 @@ static struct scu_registers *scu_regs =
        (struct scu_registers *)SOCFPGA_MPUSCU_ADDRESS;
 static struct nic301_registers *nic301_regs =
        (struct nic301_registers *)SOCFPGA_L3REGS_ADDRESS;
+static struct socfpga_system_manager *sysmgr_regs =
+       (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
 
 u32 spl_boot_device(void)
 {
-#ifdef CONFIG_SPL_SPI_SUPPORT
-       socfpga_per_reset(SOCFPGA_RESET(QSPI), 0);
-       return BOOT_DEVICE_SPI;
-#elif CONFIG_SPL_MMC_SUPPORT
-       socfpga_per_reset(SOCFPGA_RESET(SDMMC), 0);
-       socfpga_per_reset(SOCFPGA_RESET(DMA), 0);
-       return BOOT_DEVICE_MMC1;
-#else
-       return BOOT_DEVICE_RAM;
-#endif
+       const u32 bsel = readl(&sysmgr_regs->bootinfo);
+
+       switch (bsel & 0x7) {
+       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) */
+               socfpga_per_reset(SOCFPGA_RESET(SDMMC), 0);
+               socfpga_per_reset(SOCFPGA_RESET(DMA), 0);
+               return BOOT_DEVICE_MMC1;
+       case 0x6:       /* QSPI Flash (1.8V) */
+       case 0x7:       /* QSPI Flash (3.0V) */
+               socfpga_per_reset(SOCFPGA_RESET(QSPI), 0);
+               return BOOT_DEVICE_SPI;
+       default:
+               printf("Invalid boot device (bsel=%08x)!\n", bsel);
+               hang();
+       }
 }
 
 #ifdef CONFIG_SPL_MMC_SUPPORT
@@ -69,8 +82,6 @@ void board_init_f(ulong dummy)
 #ifndef CONFIG_SOCFPGA_VIRTUAL_TARGET
        const struct cm_config *cm_default_cfg = cm_get_default_config();
 #endif
-       struct socfpga_system_manager *sysmgr_regs =
-               (struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
        unsigned long sdram_size;
        unsigned long reg;