[PATCH 5/5] bsps/sparc: Simplify memory initialization

[Sebastian Huber]

On 08/06/2021 20:18, Jiri Gaisler wrote:
> 
> On 6/8/21 4:14 PM, Sebastian Huber wrote:
>> On 08/06/2021 16:03, Gedare Bloom wrote:
>>> I guess at
>>> some time, loading initialized data from the ROM was needed, but now
>>> it is not?
>>
>> I asked about this some time ago. I think these days the RTEMS 
>> application is always loaded by a boot loader (GRMON). If the data 
>> copy is really necessary, then an application can still add this step 
>> as a very early system initialization step, since boot_card() and the 
>> system initialization loop doesn't use global data (only read-only and 
>> BSS data). However, the SMP startup would still not work in this case. 
>> A boot loader is a better place to load the sections.
>>
> The code is an artifact from the old erc32 days, when we would boot and 
> execute from ROM and the .data had to be copied over to RAM. With 
> leon1/2/3, this is not used anymore as a boot loader is made from the 
> RAM image using a custom tool (mkprom).

Thanks for the background information. I added it to the commit message:

https://git.rtems.org/rtems/commit/?id=07f6a61d034d715e0340b6ffcffffa6dc6034662

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