ARM: at91: sama5: change the environment address to 0x6000

As sama5 board has 32k sram size, so the at91bootstrap and spl for sama5
boards is bigger than 16k (0x4000). That will overlap the U-Boot
environment. So I move environment to 0x6000. And reduce its size as
well.

Following shows the size of the spl binaries (v2015.04 vs v2015.07):

% ls v2015.04/*spi*spl.bin -l | awk '{print $5,$(NF)}'
15540 v2015.04/at91sam9n12ek_spiflash_defconfig_u-boot-spl.bin
15704 v2015.04/at91sam9x5ek_spiflash_defconfig_u-boot-spl.bin
16064 v2015.04/sama5d3xek_spiflash_defconfig_u-boot-spl.bin
16304 v2015.04/sama5d4ek_spiflash_defconfig_u-boot-spl.bin
16304 v2015.04/sama5d4_xplained_spiflash_defconfig_u-boot-spl.bin

% ls v2015.07/*spi*spl.bin -l | awk '{print $5,$(NF)}'
16136 v2015.07/at91sam9n12ek_spiflash_defconfig_u-boot-spl.bin
16300 v2015.07/at91sam9x5ek_spiflash_defconfig_u-boot-spl.bin
16664 v2015.07/sama5d3xek_spiflash_defconfig_u-boot-spl.bin
16904 v2015.07/sama5d4ek_spiflash_defconfig_u-boot-spl.bin
16904 v2015.07/sama5d4_xplained_spiflash_defconfig_u-boot-spl.bin

The gcc version is:  gcc 4.7.3 (Ubuntu/Linaro 4.7.3-12ubuntu1)

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Acked-by: Bo Shen <voice.shen@gmail.com>

diff --git a/include/configs/at91-sama5_common.h b/include/configs/at91-sama5_common.h
index f938534..9db4a4f 100644 (file)
--- a/include/configs/at91-sama5_common.h
+++ b/include/configs/at91-sama5_common.h
@@ -97,8 +97,8 @@
 #elif CONFIG_SYS_USE_SERIALFLASH
 /* u-boot env in serial flash, by default is bus 0 and cs 0 */
 #define CONFIG_ENV_IS_IN_SPI_FLASH
-#define CONFIG_ENV_OFFSET              0x4000
-#define CONFIG_ENV_SIZE                        0x4000
+#define CONFIG_ENV_OFFSET              0x6000
+#define CONFIG_ENV_SIZE                        0x2000
 #define CONFIG_ENV_SECT_SIZE           0x1000
 #define CONFIG_BOOTCOMMAND             "sf probe 0; "                          \
                                        "sf read 0x21000000 0x60000 0xc000; "   \