Hi,
did I miss this one?
On Tue Oct 04, 2011 at 00:37:47 -0000, Wesley@wesman.net wrote:
On Thu Sep 29, 2011 at 15:34:38 -0700, Wesley Miaw wrote:
I'm having some trouble understanding the acceptable values usable in a call to l4sigma0_map_iomem....
But what addresses should be allowed? My Verstaile Express board has 1GB RAM starting at physical address 0x60000000 but I can't use this address.
l4sigma0_map_iomem is used to map IO-mem, i.e. non-RAM. For RAM (0x60000000-0x9fffffff) use l4sigma0_map_anypage()/l4sigma0_map_mem().
I tried requesting physical memory 0x60000000 of size 0x40000000 mapped onto virtual 0x60000000 using l4sigma0_map_mem() and am still getting the error. I also tried a few other smaller sizes like 0x80000000 size 0x20000000 and 0x64000000 size 0x1c000000. But they are all failing as well.
I thought based on the RAM printout maybe I had to request a portion that was in restricted to one of the "contiguous blocks" printed out. I think owner '0' equals Sigma0 and owner '4' equals Root, so Sigma0 should be able to give me 0x64000000 size 0x1c000000.
Here's some log output:
SIGMA0: Hello! KIP @ 60002000 allocated 4KB for maintenance structures SIGMA0: Dump of all resource maps RAM:------------------------ [0:60000000;60000fff] [0:60066000;6008ffff] [0:60097000;60097fff] [0:6009f000;6013ffff] [4:60140000;60176fff] [0:60177000;60177fff] [4:60178000;6018efff] [0:6018f000;6100efff] [4:6100f000;6100ffff] [0:61010000;6209afff] [4:6209b000;6247dfff] [0:6247e000;9effffff] IOMEM:---------------------- [0:0;5fffffff] [0:a0000000;ffffffff] MOE: Hello world MOE: found 1027436 KByte free memory MOE: found RAM from 60000000 to 9f000000 MOE: allocated 1008 KByte for the page array @0x6018f000 MOE: virtual user address space [0-bfffffff] prog | l4sigma0_map_mem(64000000, 64000000, 1c000000) prog | l4sigma0_map_mem: size 1c000000; phys 64000000; virt 64000000 prog | [init] Error: Cannot map physical memory: (-2147451396) No fpage received.
Try mapping smaller chunks and/or try l4sigma0_map_anypage().
Adam