[PATCH 1/2] spl: socfpga: Getting SPL boot device from DT

[Jit Loon Lim]

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

Current SPL boot device is harcoded with MMC1, this implementation
would inhibit the support of other boot device. So, this patch is
created to get the boot device from DT, user should define the boot
device in property "u-boot,boot0". Default MMC1 would be boot device if
no boot device is defined in DT.

Signed-off-by: Tien Fong Chee <tien.fong.chee at intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim at intel.com>
---
 arch/arm/dts/socfpga_stratix10_socdk.dts |  1 +
 arch/arm/mach-socfpga/spl_s10.c          | 65 ++++++++++++++++++++++++
 2 files changed, 66 insertions(+)

diff --git a/arch/arm/dts/socfpga_stratix10_socdk.dts b/arch/arm/dts/socfpga_stratix10_socdk.dts
index 8aa55a60ab..c8e9261f48 100755
--- a/arch/arm/dts/socfpga_stratix10_socdk.dts
+++ b/arch/arm/dts/socfpga_stratix10_socdk.dts
@@ -16,6 +16,7 @@
 
 	chosen {
 		stdout-path = "serial0:115200n8";
+		u-boot,boot0 = <&mmc>;
 	};
 
 	leds {
diff --git a/arch/arm/mach-socfpga/spl_s10.c b/arch/arm/mach-socfpga/spl_s10.c
index dad2ac5d0d..c4b82ebf14 100644
--- a/arch/arm/mach-socfpga/spl_s10.c
+++ b/arch/arm/mach-socfpga/spl_s10.c
@@ -13,6 +13,8 @@
 #include <asm/utils.h>
 #include <common.h>
 #include <debug_uart.h>
+#include <dm.h>
+#include <dm/ofnode.h>
 #include <image.h>
 #include <spl.h>
 #include <asm/arch/clock_manager.h>
@@ -27,6 +29,69 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
+u32 spl_boot_device(void)
+{
+	int ret, size;
+	ofnode node;
+	const fdt32_t *phandle_p;
+	u32 phandle;
+	struct udevice *dev;
+
+	node = ofnode_path("/chosen");
+	if (!ofnode_valid(node)) {
+		debug("%s: /chosen node was not found.\n", __func__);
+		goto fallback;
+	}
+
+	phandle_p = ofnode_get_property(node, "u-boot,boot0", &size);
+	if (!phandle_p) {
+		debug("%s: u-boot,boot0 property was not found.\n",
+		     __func__);
+		goto fallback;
+	}
+
+	phandle = fdt32_to_cpu(*phandle_p);
+
+	node = ofnode_get_by_phandle(phandle);
+
+	ret = device_get_global_by_ofnode(node, &dev);
+	if (ret) {
+		debug("%s: Boot device at not found, error: %d\n", __func__,
+		      ret);
+		goto fallback;
+	}
+
+	debug("%s: Found boot device %s\n", __func__, dev->name);
+
+	switch (device_get_uclass_id(dev)) {
+	case UCLASS_SPI_FLASH:
+		return BOOT_DEVICE_SPI;
+	case UCLASS_MISC:
+		return BOOT_DEVICE_NAND;
+	case UCLASS_MMC:
+		return BOOT_DEVICE_MMC1;
+	default:
+		debug("%s: Booting from device uclass '%s' is not "
+		      "supported\n", __func__,
+		      dev_get_uclass_name(dev));
+	}
+
+fallback:
+	/* Return default boot device */
+	return BOOT_DEVICE_MMC1;
+}
+
+#ifdef CONFIG_SPL_MMC_SUPPORT
+u32 spl_mmc_boot_mode(const u32 boot_device)
+{
+#if defined(CONFIG_SPL_FS_FAT) || defined(CONFIG_SPL_FS_EXT4)
+	return MMCSD_MODE_FS;
+#else
+	return MMCSD_MODE_RAW;
+#endif
+}
+#endif
+
 void board_init_f(ulong dummy)
 {
 	const struct cm_config *cm_default_cfg = cm_get_default_config();
-- 
2.26.2