Robert lazarski wrote: > On Nov 29, 2007 2:29 AM, vijay baskar <[EMAIL PROTECTED]> wrote: > > > > How to make the linux find the total 2GB memory? > > > > Hi Friend, > > > > I hope u had tracked the conversion that has been going on. The max mem > > that the kernel can show is only 768 MB because only that of memory is > > directly mapped with your ram.. No matter how much ram > 768 MB (in > > powerpc.. it varies in other architectures) u have, the kernel will show > > only 768 MB.. This is called low mem.. > > > > How t o use high mem?? > > > > scott can probably guide us on this.. I also have lot of confusions about > > high mem.. Also i would suggest you a bit of reading on virtual memory > > management on linux to get a grasp about how things are done > > Rest for scott > > > > regards, > > vijai > > I also have a requirement to use more than 768MB and 0x30000000. I > have other problems at the moment, so I haven't tested this completely > yet. My limited understanding, though, is that to use more than 768MB > you have to change your kernel configuration, including shifting the > kernel start address. This is what I plan on testing for 1GB when I > have time: > > CONFIG_ADVANCED_OPTIONS=y > CONFIG_LOWMEM_SIZE_BOOL=y > CONFIG_LOWMEM_SIZE=0x40000000 > CONFIG_KERNEL_START_BOOL=y > CONFIG_KERNEL_START=0xa0000000 > # CONFIG_CONSISTENT_START_BOOL is not set > # CONFIG_CONSISTENT_SIZE_BOOL is not set > # CONFIG_BOOT_LOAD_BOOL is not set > > If that works for current kernels, please respond to the list ;-) .
Can't answer that question, but before trying that, have you tried CONFIG_HIGHMEM=y ? -Dale _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded