[PATCH] fpga: define dummy fpga_load function for debug build

[Eugen Hristev]

On 8/28/23 03:21, Chanho Park wrote:
> Hi,
> 
>> -----Original Message-----
>> From: Michal Simek <michal.simek at amd.com>
>> Sent: Friday, August 25, 2023 4:23 PM
>> To: Chanho Park <chanho61.park at samsung.com>; u-boot at lists.denx.de
>> Subject: Re: [PATCH] fpga: define dummy fpga_load function for debug build
>>
>> Hi,
>>
>> On 8/16/23 08:54, Chanho Park wrote:
>>> This fixes below build error when CC_OPTIMIZE_FOR_DEBUG is enabled and
>>> CONFIG_SPL_FPGA is not enabled.
>>>
>>> ../common/spl/spl_fit.c:591: undefined reference to `fpga_load'
>>> collect2: error: ld returned 1 exit status
>>>
>>> Signed-off-by: Chanho Park <chanho61.park at samsung.com>
>>> ---
>>>    include/fpga.h | 8 ++++++++
>>>    1 file changed, 8 insertions(+)
>>>
>>> diff --git a/include/fpga.h b/include/fpga.h index
>>> ed688cc0fa3b..44f2755a3f10 100644
>>> --- a/include/fpga.h
>>> +++ b/include/fpga.h
>>> @@ -60,8 +60,16 @@ int fpga_add(fpga_type devtype, void *desc);
>>>    int fpga_count(void);
>>>    const fpga_desc *const fpga_get_desc(int devnum);
>>>    int fpga_is_partial_data(int devnum, size_t img_len);
>>> +#if CONFIG_IS_ENABLED(FPGA)
>>>    int fpga_load(int devnum, const void *buf, size_t bsize,
>>>    	      bitstream_type bstype, int flags);
>>> +#else
>>> +static inline int fpga_load(int devnum, const void *buf, size_t bsize,
>>> +	      bitstream_type bstype, int flags) {
>>> +	return FPGA_FAIL;
>>> +}
>>> +#endif
>>>    int fpga_fsload(int devnum, const void *buf, size_t size,
>>>    		fpga_fs_info *fpga_fsinfo);
>>>    int fpga_loads(int devnum, const void *buf, size_t size,
>>
>> There is another patch targeting the same code.
>> Please take a look at
>> https://lore.kernel.org/r/20230808102227.34233-1-
>> eugen.hristev at collabora.com
> 
> I wasn't aware that there was an attempt to fix the issue. If I knew it, I would reply the patch...
> 
>>
>> and work together to come up with the patch which covers both cases.
> 
> Yes. I also tried to make the patch with CONFIG_CC_OPTIMIZE_FOR_DEBUG guard but I couldn't find any codes that uses the guard.
> And I was also worried about the CC_OPTIMIZE_FOR_DEBUG's behavior. It could be related with the optimization level of the compiler.
> That's why I put the guard with #if CONFIG_IS_ENABLED(FPGA).
> 
> Best Regards,
> Chanho Park
> 


Hi Chanho,

Simon suggested to use CONFIG_CC_OPTIMIZE_FOR_DEBUG in this case here:

https://patchwork.ozlabs.org/project/uboot/patch/20230619102839.277902-1-eugen.hristev@collabora.com/

As I told Michal, basically your patch and my patch do the same thing.
I suggested him to pick the one that he thinks it's best. (or even 
suggest another way)

Eugen