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[U-Boot,v3,2/5] Exynos5: Config: Place environment at the end of SPI flash

Message ID 1401812251-4846-3-git-send-email-akshay.s@samsung.com
State Changes Requested
Delegated to: Minkyu Kang
Headers show

Commit Message

Akshay Saraswat June 3, 2014, 4:17 p.m. UTC 
Currently environment resides at the location where BL2 ends.
This may hold good in case there is an empty space at this
position. But what if this place already has a binary or is
expected to have one. To avoid such scenarios it is better
to save environment at the end of the flash.

Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
---
Changes since v2:
	- Added "Acked-by" & "Tested-by".
Changes since v1:
	- Added new config for SPI flash size.

 include/configs/exynos5-dt.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/include/configs/exynos5-dt.h b/include/configs/exynos5-dt.h
index 5a9b1b4..3bcec85 100644
--- a/include/configs/exynos5-dt.h
+++ b/include/configs/exynos5-dt.h
@@ -207,7 +207,10 @@ 
 
 #define CONFIG_BL1_OFFSET	(CONFIG_RES_BLOCK_SIZE + CONFIG_SEC_FW_SIZE)
 #define CONFIG_BL2_OFFSET	(CONFIG_BL1_OFFSET + CONFIG_BL1_SIZE)
-#define CONFIG_ENV_OFFSET	(CONFIG_BL2_OFFSET + CONFIG_BL2_SIZE)
+
+/* Store environment at the end of a 4 MB SPI flash */
+#define FLASH_SIZE		(0x4 << 20)
+#define CONFIG_ENV_OFFSET	(FLASH_SIZE - CONFIG_BL2_SIZE)
 
 /* U-boot copy size from boot Media to DRAM.*/
 #define BL2_START_OFFSET	(CONFIG_BL2_OFFSET/512)