xilinx: versal-net: 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-net platform as well.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Link: https://lore.kernel.org/r/20240312113421.7394-1-venkatesh.abbarapu@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
diff --git a/board/xilinx/versal-net/board.c b/board/xilinx/versal-net/board.c
index 990ca16..aecaeb6 100644
--- a/board/xilinx/versal-net/board.c
+++ b/board/xilinx/versal-net/board.c
@@ -371,3 +371,33 @@
 void reset_cpu(void)
 {
 }
+
+enum env_location env_get_location(enum env_operation op, int prio)
+{
+	u8 bootmode = versal_net_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_NOWHERE;
+	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_NOWHERE;
+	case JTAG_MODE:
+	case SELECTMAP_MODE:
+	default:
+		return ENVL_NOWHERE;
+	}
+}