On Wed, Jul 18, 2001 at 09:09:42PM -0700, Chris Vandomelen wrote: > Since I can't seem to find any information about this anywhere else, I > figured this would be the appropriate place to ask. > > I'm using a moderately hacked 2.4.0-test9 kernel from the linux-vr > repository (the only complete kernel, excluding NetBSD, that I've found > which runs on CE devices at the moment), and it doesn't want to recognize > all 48M of RAM in the device, only the 1st 16. The memory is mapped as > such: > > 0M - 16M: On-board memory > 16M - 32M: Unmapped region > 32M - 64M: Memory expansion card > > When the first 16M is checked, the memory immediately after that is found > to be non-existant. > > Does anyone have a patch (other than the hack I tossed together to turn > the 32M-64M chunk into an MTD device) Now that hack took longer to implement than a proper solution ... > that would be useful to work past the memory hole? Put something like the following into your systems prom_meminit: add_memory_region(0UL , 16UL << 20, BOOT_MEM_RAM); add_memory_region(16UL , 16UL << 20, BOOT_MEM_RESERVED); add_memory_region(32UL << 20, 32UL << 20, BOOT_MEM_RAM); You may want to account for additional memory areas and do a proper detection etc., exclude area which are used by the firmware etc. Ralf
