[PATCH] bsps/sparc: Add grlib_malloc(), grlib_calloc()

Sebastian Huber sebastian.huber at embedded-brains.de
Fri Dec 21 14:20:34 UTC 2018

On 21/12/2018 15:18, Daniel Hellstrom wrote:
> On 2018-12-21 15:12, Sebastian Huber wrote:
>> On 21/12/2018 15:06, Daniel Hellstrom wrote:
>>> On 2018-12-21 15:02, Sebastian Huber wrote:
>>>> On 21/12/2018 14:59, Daniel Hellstrom wrote:
>>>>> On 2018-12-21 14:57, Sebastian Huber wrote:
>>>>>> Hello Daniel,
>>>>>> On 21/12/2018 14:42, Daniel Hellstrom wrote:
>>>>>>> Hi Sebastian,
>>>>>>> Sorry for my very late response! I have reviewed the code but 
>>>>>>> not executed it, it looks okay with me. I'm guessing it is also 
>>>>>>> a positive thing to remove malloc for another approach to 
>>>>>>> allocate memory when it comes to validation of the SW.
>>>>>> thanks for the review.
>>>>>> My next step is to move the grlib to bsps/shared/grlib so that it 
>>>>>> can be used for RISC-V BSPs.
>>>>> Great news! how will you do with the driver manager in this case, 
>>>>> will you add a connection between FDT and the driver manager via 
>>>>> FDT-bus driver? I think that would be of interest also for LEON, I 
>>>>> would be happy to review such a solution or similar one. 
>>>> Sorry, I don't have time to match the FDT with the driver manager. 
>>>> The libbsd has already this functionality. All I plan to do at the 
>>>> moment is to move the files and make them compile clean.
>>> Okay, in the long-term do you think it is better to move to the 
>>> libbsd way than using the driver manager? The driver manager is 
>>> around 10k, and the required stuff around 5k on sparc if I recall 
>>> correctly. Do you have an idea how large the device discovery, etc. 
>>> is in libbsd?
>> I don't have figures, but the libbsd is more for systems that provide 
>> RAM in quantities of 1MiBs and not 10KiBs.
> Thats my assumption too, then we will stick with the driver manager. 
> However at some point we would want to add a GRETH_GBIT network driver 
> for the libbsd stack, maybe it is required for that particular driver 
> then, I don't know. I will have to dig into that at some point.

The network stack interfaces are separate from the FreeBSD bus 
abstraction. You can use your driver manager and write a network 
interface driver for libbsd.

Sebastian Huber, embedded brains GmbH

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