[PATCH v2] xilinx: zynqmp: Do not use 0 as spl bss start address

[Michal Simek]

Hi,

On 7/14/22 14:22, Stefan Herbrechtsmeier wrote:
> Hi Michal,
> 
> Am 07.06.2022 um 10:13 schrieb Michal Simek:
>> út 7. 6. 2022 v 9:44 odesílatel Stefan Herbrechtsmeier
>> <stefan.herbrechtsmeier-oss at weidmueller.com> napsal:
>>>
>>> From: Stefan Herbrechtsmeier <stefan.herbrechtsmeier at weidmueller.com>
>>>
>>> Do not use 0 as address for memory because of the special meaning for
>>> pointers (null pointer). Change the spl bss start address to the second
>>> page.
>>>
>>> Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier at weidmueller.com>
>>>
>>> ---
>>> The problem was discovered with a static array initialized with zero.
>>> The compiler placed the array at address 0 and thereby a pointer to the
>>> array was interpreted as null pointer.
>>>
>>> Changes in v2:
>>> - Rework commit message and replace address null by 0
>>>
>>>   include/configs/xilinx_zynqmp.h | 2 +-
>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
>>> index f25d796a1e..21a5cf1617 100644
>>> --- a/include/configs/xilinx_zynqmp.h
>>> +++ b/include/configs/xilinx_zynqmp.h
>>> @@ -209,7 +209,7 @@
>>>   #define CONFIG_SPL_MAX_SIZE            0x40000
>>>
>>>   /* Just random location in OCM */
>>> -#define CONFIG_SPL_BSS_START_ADDR      0x0
>>> +#define CONFIG_SPL_BSS_START_ADDR      0x1000
>>>   #define CONFIG_SPL_BSS_MAX_SIZE                0x80000
>>>
>>>   #if defined(CONFIG_SPL_SPI_FLASH_SUPPORT)
>>> -- 
>>> 2.30.2
>>>
>>
>> Applied.
>> M
>>
> 
> I think this patch get lost because of the "Convert CONFIG_SPL_BSS_START_ADDR to 
> Kconfig" change.

yes you are right. Can you please send one more to fix it in defconfig?

Thanks,
Michal