tegra2: Enable SPI environment on Seaboard

This uses the SPI flash on Seaboard to store an 8KB environment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

include/configs/harmony.h

@@ -58,4 +58,7 @@
 #define CONFIG_EFI_PARTITION
 #define CONFIG_CMD_EXT2
 #define CONFIG_CMD_FAT
+
+/* Environment not stored */
+#define CONFIG_ENV_IS_NOWHERE
 #endif /* __CONFIG_H */

include/configs/seaboard.h

@@ -52,6 +52,7 @@
 #define CONFIG_SF_DEFAULT_MODE		SPI_MODE_0
 #define CONFIG_CMD_SPI
 #define CONFIG_CMD_SF
+#define CONFIG_SPI_FLASH_SIZE		(4 << 20)
 
 /* SD/MMC */
 #define CONFIG_MMC
@@ -63,4 +64,12 @@
 #define CONFIG_EFI_PARTITION
 #define CONFIG_CMD_EXT2
 #define CONFIG_CMD_FAT
+
+/* Environment in SPI */
+#define CONFIG_ENV_IS_IN_SPI_FLASH
+#define CONFIG_ENV_SPI_MAX_HZ		48000000
+#define CONFIG_ENV_SPI_MODE		SPI_MODE_0
+
+#define CONFIG_ENV_SECT_SIZE    CONFIG_ENV_SIZE
+#define CONFIG_ENV_OFFSET       (CONFIG_SPI_FLASH_SIZE - CONFIG_ENV_SECT_SIZE)
 #endif /* __CONFIG_H */

include/configs/tegra2-common.h

@@ -51,8 +51,7 @@
 #define CONFIG_OF_LIBFDT		/* enable passing of devicetree */
 
 /* Environment */
-#define CONFIG_ENV_IS_NOWHERE
-#define CONFIG_ENV_SIZE			0x20000	/* Total Size Environment */
+#define CONFIG_ENV_SIZE			0x2000	/* Total Size Environment */
 
 /*
  * Size of malloc() pool