powerpc/mpc8536ds: Save the env variables to SDcard and SPI flash

MPC8536DS offer booting from SDcard or SPI flash.  This patch defined that
u-boot can save the environment variables on SDcard or SPI flash when
booting from the related device.  The Env parameter region and linux
kernel region have overlap in SPI-Flash, So change the Env param saving
address.

Signed-off-by: Xie Xiaobo <r63061@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/include/configs/MPC8536DS.h b/include/configs/MPC8536DS.h
index 3c7e7351abe53d55726a6e0701bdf119d6ee74f0..4b8cba24b2535ea0b7a2dcdc1c2f9dedf9fda5ae 100644 (file)
--- a/include/configs/MPC8536DS.h
+++ b/include/configs/MPC8536DS.h
@@ -644,10 +644,24 @@
 
 #if defined(CONFIG_SYS_RAMBOOT)
 #if defined(CONFIG_RAMBOOT_NAND)
-       #define CONFIG_ENV_IS_IN_NAND   1
-       #define CONFIG_ENV_SIZE         CONFIG_SYS_NAND_BLOCK_SIZE
-       #define CONFIG_ENV_OFFSET ((512 * 1024) + CONFIG_SYS_NAND_BLOCK_SIZE)
-#elif defined(CONFIG_RAMBOOT_SDCARD) || defined(CONFIG_RAMBOOT_SPIFLASH)
+#define CONFIG_ENV_IS_IN_NAND  1
+#define CONFIG_ENV_SIZE                CONFIG_SYS_NAND_BLOCK_SIZE
+#define CONFIG_ENV_OFFSET ((512 * 1024) + CONFIG_SYS_NAND_BLOCK_SIZE)
+#define CONFIG_ENV_RANGE       (3 * CONFIG_ENV_SIZE)
+#elif defined(CONFIG_RAMBOOT_SPIFLASH)
+#define CONFIG_ENV_IS_IN_SPI_FLASH
+#define CONFIG_ENV_SPI_BUS     0
+#define CONFIG_ENV_SPI_CS      0
+#define CONFIG_ENV_SPI_MAX_HZ  10000000
+#define CONFIG_ENV_SPI_MODE    0
+#define CONFIG_ENV_SIZE                0x2000  /* 8KB */
+#define CONFIG_ENV_OFFSET      0xF0000
+#define CONFIG_ENV_SECT_SIZE   0x10000
+#elif defined(CONFIG_RAMBOOT_SDCARD)
+#define CONFIG_ENV_IS_IN_MMC
+#define CONFIG_ENV_SIZE                0x2000
+#define CONFIG_SYS_MMC_ENV_DEV  0
+#else
        #define CONFIG_ENV_IS_NOWHERE   1       /* Store ENV in memory only */
        #define CONFIG_ENV_ADDR         (CONFIG_SYS_MONITOR_BASE - 0x1000)
        #define CONFIG_ENV_SIZE         0x2000