Dear Graeme Russ,
In message CALButCKtUBx1+prpcLC-YRFc7GV6Dgq_TFx-QwH4WXCvnST=Ow@mail.gmail.com you wrote:
I've mentioned this before - I think gd is being abused. To me, gd should contain only data members that are explicitly required prior to SDRAM being initialised and BSS being available. It has become a bit of a 'well I need this variable everywhere, I'll dump it in gd'.
All too true!!
To be honest, I think gd should only be a temporary structure used to carry specific data through the initialisation process up to the point BSS becomes available. With the 'early malloc' patches in the pipeline, it might even be possible to malloc the gd structure early and then when BSS is available, copy the data into the final global data structure in BSS. I think that would be complicated by functions that need to use gd both before and after BSS becomes available.
If we could drop gd after relocation, I'd be all too happy.
Best regards,
Wolfgang Denk