xilinx: versal: Add support for saving env based on bootmode

Enable saving variables to MMC(FAT) and SPI based on primary
bootmode. If bootmode is JTAG, dont save env anywhere(NOWHERE).

Enable ENV_FAT_DEVICE_AND_PART="0:auto" for Versal platforms as well.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/versal/board.c b/board/xilinx/versal/board.c
index e2f9d13..b175064 100644
--- a/board/xilinx/versal/board.c
+++ b/board/xilinx/versal/board.c
@@ -9,6 +9,7 @@
 #include <env.h>
 #include <fdtdec.h>
 #include <init.h>
+#include <env_internal.h>
 #include <log.h>
 #include <malloc.h>
 #include <time.h>
@@ -245,3 +246,32 @@
 void reset_cpu(void)
 {
 }
+
+enum env_location env_get_location(enum env_operation op, int prio)
+{
+	u32 bootmode = versal_get_bootmode();
+
+	if (prio)
+		return ENVL_UNKNOWN;
+
+	switch (bootmode) {
+	case EMMC_MODE:
+	case SD_MODE:
+	case SD1_LSHFT_MODE:
+	case SD_MODE1:
+		if (IS_ENABLED(CONFIG_ENV_IS_IN_FAT))
+			return ENVL_FAT;
+		if (IS_ENABLED(CONFIG_ENV_IS_IN_EXT4))
+			return ENVL_EXT4;
+		return ENVL_UNKNOWN;
+	case OSPI_MODE:
+	case QSPI_MODE_24BIT:
+	case QSPI_MODE_32BIT:
+		if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH))
+			return ENVL_SPI_FLASH;
+		return ENVL_UNKNOWN;
+	case JTAG_MODE:
+	default:
+		return ENVL_NOWHERE;
+	}
+}