[U-Boot] [PATCH 2/2] ARM: at91: sama5d3: mmc: save enviroment as a fat file (uboot.env)

[Josh Wu <josh.wu@atmel.com>]

On 11/22/2013 6:08 PM, Bo Shen wrote:
> Hi Josh,
>
> On 11/22/2013 02:58 PM, Josh Wu wrote:
>> This patch will save U-Boot environment as a file: uboot.env, in FAT 
>> partition
>> instead of saving it in raw sector of SD card.
>>
>> Since saving environment in raw sector has risk of corrupting the SD 
>> card and
>> only can use very small size. Save as a FAT file has no above 
>> limitation.
>>
>> Signed-off-by: Josh Wu <josh.wu@atmel.com>
>> ---
>>   include/configs/sama5d3xek.h |   10 +++++++---
>>   1 file changed, 7 insertions(+), 3 deletions(-)
>
> Tested on sama5d31ek board. It doesn't work. Please check it, and also 
> check on at91sam9x5ek board.
>
> Please take the following information as a reference.
> --->8---
> U-Boot 2013.10-00389-gf37e980 (Nov 22 2013 - 17:56:53)
>
> CPU: SAMA5D31
> Crystal frequency:       12 MHz
> CPU clock        :      528 MHz
> Master clock     :      132 MHz
> DRAM:  512 MiB
> NAND:  256 MiB
> MMC:   mci: 0
> mci: setting clock 257812 Hz, block size 512
> mci: setting clock 257812 Hz, block size 512
> mci: setting clock 257812 Hz, block size 512
> mci: setting clock 257812 Hz, block size 512
> mci: setting clock 22000000 Hz, block size 512
> reading uboot.env
>
> ** Unable to read "uboot.env" from mmc0:1 **
> Using default environment
>
> In:    serial
> Out:   serial
> Err:   serial
> Net:   macb0
> Warning: failed to set MAC address
> , usb_ether
> Hit any key to stop autoboot:  0
> U-Boot> fat
>   fatinfo fatload fatls fatwrite
> U-Boot> fatls mmc 0
>     20737   boot.bin
>    332916   u-boot.bin
>
> 2 file(s), 0 dir(s)
>
> U-Boot> saveenv
> Saving Environment to FAT...
> mci: setting clock 257812 Hz, block size 512
> mci: setting clock 22000000 Hz, block size 512
> mci: setting clock 257812 Hz, block size 512
> mci: setting clock 257812 Hz, block size 512
> mci: setting clock 22000000 Hz, block size 512
> writing uboot.env
> done
> U-Boot> fatls mmc 0
>     20737   boot.bin
>    332916   u-boot.bin
>
> 2 file(s), 0 dir(s)
> ---8<---

Oops, this indeed happened in my side too. I will follow on this issue. 
Thanks for the testing.

>
>> diff --git a/include/configs/sama5d3xek.h b/include/configs/sama5d3xek.h
>> index 5a6f0fc..a77ab5f 100644
>> --- a/include/configs/sama5d3xek.h
>> +++ b/include/configs/sama5d3xek.h
>> @@ -196,9 +196,13 @@
>>                   "bootm 0x22000000 - 0x21000000"
>>   #elif CONFIG_SYS_USE_MMC
>>   /* bootstrap + u-boot + env in sd card */
>> -#define CONFIG_ENV_IS_IN_MMC
>> -#define CONFIG_ENV_OFFSET    0x2000
>> -#define CONFIG_ENV_SIZE        0x1000
>> +#define CONFIG_ENV_IS_IN_FAT
>> +#define CONFIG_FAT_WRITE
>> +#define FAT_ENV_INTERFACE    "mmc"
>> +#define FAT_ENV_FILE        "uboot.env"
>> +#define FAT_ENV_DEVICE        0
>> +#define FAT_ENV_PART        1
>> +#define CONFIG_ENV_SIZE        0x4000
>>   #define CONFIG_BOOTCOMMAND    "fatload mmc 0:1 0x21000000 dtb; " \
>>                   "fatload mmc 0:1 0x22000000 uImage; " \
>>                   "bootm 0x22000000 - 0x21000000"
>>
>
> Best Regards,
> Bo Shen

Best Regards,
Josh Wu