[+cc linux-pci (please keep the list copied so others can contribute/benefit and it's searchable via list archives)] On Mon, Nov 04, 2019 at 04:25:02PM +0100, Carlo Pisani wrote: > > I think the first step is to fix the problem that prevents current > > kernels from booting. It's not really practical to debug v4.4. > > does anyone have a modern kernel working for rb532? > because I suspect Linux is in regressing regarding this point. I have no idea what rb532 is or whether Linux is regressing on it. Any platform that isn't tested occasionally does tend to regress over time. > > It sounds like the firmware fails to even load v4.11? If that's the > > case, it's probably not a problem with the kernel itself, since it > > hasn't even started executing. Possibly a kernel size problem? Maybe > > the v4.11 kernel is larger than v4.4, v4.9, etc? Does v4.11 boot if > > you strip out non-essential drivers? > > I do not know, and I don't understand. The rb532 manual doesn't say a > word regarding the maximal size of the kernel, which in our case is > less than 8Mbyte Is the v4.11 kernel image bigger than the v4.4 kernel that boots? > We tried to strip extra functions out of the kernel v5.*, but no dice > > hence, first we need to fix kernel 4.4 which boots and work, then we > can try to understand what is wrong with kernel v5.* > > our time is limited, and we have to complete a project rather than > play with the kernel Sorry, I should have been more clear. I don't think it's practical *for me* to debug something on v4.4. It may well be practical for you because you have different constraints than I do. Bjorn
