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authorFabio Estevam <festevam@gmail.com>2019-12-19 13:52:39 -0300
committerStefano Babic <sbabic@denx.de>2019-12-27 12:14:02 +0100
commit89c832cfe7b63c074583cbd6a582ccede6f437b2 (patch)
treee62a3dcd5a94eb5d52e17c07dac4d2855f4a2b84 /include/configs/mx51evk.h
parentd7cd860c22c1403a554012fd2bf7983ade0acc26 (diff)
mx51evk: Fix U-Boot corruption after saving the environment
U-Boot binary has grown in such a way that it goes beyond the reserved area for the environment variables. Running "saveenv" followed by a "reset" causes U-Boot to hang because of this overlap. Fix this problem by increasing the CONFIG_ENV_OFFSET size. Also, in order to prevent this same problem to happen in the future, use CONFIG_BOARD_SIZE_LIMIT, which will detect the overlap in build-time. CONFIG_BOARD_SIZE_LIMIT does not accept math expressions, so declare CONFIG_ENV_OFFSET with its direct value instead. Signed-off-by: Fabio Estevam <festevam@gmail.com>
Diffstat (limited to 'include/configs/mx51evk.h')
-rw-r--r--include/configs/mx51evk.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/configs/mx51evk.h b/include/configs/mx51evk.h
index 71ff789381..10aa1bcd87 100644
--- a/include/configs/mx51evk.h
+++ b/include/configs/mx51evk.h
@@ -182,6 +182,19 @@
/*-----------------------------------------------------------------------
* environment organization
*/
+
+/*
+ * Environment starts at CONFIG_ENV_OFFSET=0xC0000 = 768k = 768 * 1024 = 786432
+ *
+ * Detect overlap between U-Boot image and environment area in build-time
+ *
+ * CONFIG_BOARD_SIZE_LIMIT = CONFIG_ENV_OFFSET - u-boot.imx offset
+ * CONFIG_BOARD_SIZE_LIMIT = 768k - 1k = 767k = 785408
+ *
+ * Currently CONFIG_BOARD_SIZE_LIMIT does not handle expressions, so
+ * write the direct value here
+ */
+#define CONFIG_BOARD_SIZE_LIMIT 785408
#define CONFIG_SYS_MMC_ENV_DEV 0
#endif