[PATCH] arm64: zynqmp: Fix emmc boot mode boot_target sequennce

[Michal Simek]

From: T Karthik Reddy <t.karthik.reddy at xilinx.com>

Emmc boot devcie is mounted to mmc at ff160000 controller on zynqmp.
Detect mmc alias at run time for setting up proper boot_targets
sequence instead of setting boot_targets manually.
Removed setting "modeboot" variable as it not longer need as we
switched to distro boot.

Signed-off-by: T Karthik Reddy <t.karthik.reddy at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 board/xilinx/zynqmp/zynqmp.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index aac2eb7bc1a2..b72eade43eea 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -580,8 +580,17 @@ int board_late_init(void)
 		break;
 	case EMMC_MODE:
 		puts("EMMC_MODE\n");
-		mode = "mmc0";
-		env_set("modeboot", "emmcboot");
+		if (uclass_get_device_by_name(UCLASS_MMC,
+					      "mmc at ff160000", &dev) &&
+		    uclass_get_device_by_name(UCLASS_MMC,
+					      "sdhci at ff160000", &dev)) {
+			puts("Boot from EMMC but without SD0 enabled!\n");
+			return -1;
+		}
+		debug("mmc0 device found at %p, seq %d\n", dev, dev->seq);
+
+		mode = "mmc";
+		bootseq = dev->seq;
 		break;
 	case SD_MODE:
 		puts("SD_MODE\n");
-- 
2.24.0