U-Boot on this board grew a long time ago past the 384 KiB that it reserves for the U-Boot image, before the environment. Thus, saveenv overwrites the U-Boot image and bricks the board.
I tried to find out when U-Boot grew beyond this point, but there is a long stretch in the history where this board did not build -- and AFAICT when it did fit in 384 KiB, it was missing vital features such as fdt support. Turning off CONFIG_VIDEO was not enough to make it fit. Thus, I don't think we have any choice other than to move the environment.
Signed-off-by: Scott Wood scottwood@freescale.com --- include/configs/MPC8641HPCN.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/configs/MPC8641HPCN.h b/include/configs/MPC8641HPCN.h index a0d7d52..9f755e5 100644 --- a/include/configs/MPC8641HPCN.h +++ b/include/configs/MPC8641HPCN.h @@ -255,7 +255,7 @@ extern unsigned long get_board_sys_clk(unsigned long dummy); #define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE) #define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
-#define CONFIG_SYS_MONITOR_LEN (256 * 1024) /* Reserve 256 kB for Mon */ +#define CONFIG_SYS_MONITOR_LEN (512 * 1024) /* Reserve 512 kB for Mon */ #define CONFIG_SYS_MALLOC_LEN (1024 * 1024) /* Reserved for malloc */
/* Serial Port */ @@ -602,7 +602,8 @@ extern unsigned long get_board_sys_clk(unsigned long dummy); */ #ifndef CONFIG_SYS_RAMBOOT #define CONFIG_ENV_IS_IN_FLASH 1 - #define CONFIG_ENV_ADDR (CONFIG_SYS_MONITOR_BASE + 0x60000) + #define CONFIG_ENV_ADDR \ + (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN) #define CONFIG_ENV_SECT_SIZE 0x10000 /* 64K(one sector) for env */ #else #define CONFIG_ENV_IS_NOWHERE 1 /* Store ENV in memory only */