I am having great difficulty trying to get memory allocation from DRAM1 on the Sigma SMP8634. It seems that some hybrid between SPARSEMEM and HIGHMEM would be needed. I have read all the previous threads on this topic, but it appears no one has been successful yet. I am working with the 2.6.22.19 kernel (latest release from Sigma). At this point, I have it kinda recognizing the memory: On node 0 totalpages: 31712 DMA zone: 1024 pages used for memmap DMA zone: 0 pages reserved DMA zone: 22496 pages, LIFO batch:3 Normal zone: 0 pages used for memmap HighMem zone: 256 pages used for memmap HighMem zone: 7936 pages, LIFO batch:0 Built 1 zonelists. Total pages: 30432 But the memory output from the end of mem_init() does not show it: Memory: 82432k/94080k available (2856k kernel code, 11604k reserved, 468k data, 5932k init, 0k highmem) On the kernel command line I am passing: mem=92M mem=32M@0x26000000 Which, as I understand it, should give me 32M out of the bottom of the 128M on bank DRAM1. The output of 'free' also does not indicate any more memory than if I just pass 'mem=92M' to the kernel. So what needs to be done to get the high memory added to usable memory? I think I have gone beyond my understanding of memory management. If the memory is in fact available, how can I tell, and how can it be allocated for user space programs? Ed Okerson
