Hi guys,
I am working with the board T2080RDB. I am using the operative system which is provide by freescale using Yocto Proyect and the sdk 1.9. When I turn the board on and I type cat /proc/iomem , I can see the following:
root@t2080rdb:~# cat /proc/iomem
00000000-ffffffff : System RAM
c20000000-c2fffffff : /pcie@ffe250000
c20000000-c2fffffff : PCI Bus 0001:01
c20000000-c200fffff : 0001:01:00.0
c20100000-c201fffff : 0001:01:00.0
c40000000-c4fffffff : /pcie@ffe270000
c40000000-c4fffffff : PCI Bus 0002:01
fe8000000-fefffffff : fe8000000.nor
ffe008000-ffe008fff : mpc85xx_mc_err
ffe100100-ffe10017f : dma
ffe100180-ffe1001ff : dma
ffe100200-ffe10027f : dma
ffe100280-ffe1002ff : dma
ffe100400-ffe10047f : dma
ffe100480-ffe1004ff : dma
ffe100500-ffe10057f : dma
ffe100580-ffe1005ff : dma
ffe101100-ffe10117f : dma
ffe101180-ffe1011ff : dma
ffe101200-ffe10127f : dma
ffe101280-ffe1012ff : dma
ffe101400-ffe10147f : dma
ffe101480-ffe1014ff : dma
ffe101500-ffe10157f : dma
ffe101580-ffe1015ff : dma
ffe102100-ffe10217f : dma
ffe102180-ffe1021ff : dma
ffe102200-ffe10227f : dma
ffe102280-ffe1022ff : dma
ffe102400-ffe10247f : dma
ffe102480-ffe1024ff : dma
ffe102500-ffe10257f : dma
ffe102580-ffe1025ff : dma
ffe114000-ffe114fff : mmc0
ffe11c500-ffe11c507 : serial
ffe11c600-ffe11c607 : serial
ffe11d500-ffe11d507 : serial
ffe11d600-ffe11d607 : serial
ffe1e0000-ffe1e07ff : rman-inbound-block0
ffe1e0b00-ffe1e0fff : rman-uio
ffe1e1000-ffe1e17ff : rman-inbound-block1
ffe1e2000-ffe1e27ff : rman-inbound-block2
ffe1e3000-ffe1e37ff : rman-inbound-block3
ffe210000-ffe210fff : /soc@ffe000000/usb@210000
ffe210000-ffe210fff : ehci_hcd
ffe211000-ffe211fff : /soc@ffe000000/usb@211000
ffe211000-ffe211fff : ehci_hcd
ffe250e00-ffe25ffff : mpc85xx_pci_err
ffe270e00-ffe27ffff : mpc85xx_pci_err
ffe400000-ffe4fffff : fman
ffe400000-ffe45ffff : fman-muram
ffe482000-ffe482fff : fman-port-hc
ffe483000-ffe483fff : fman-port-hc
ffe484000-ffe484fff : fman-port-hc
ffe485000-ffe485fff : fman-port-hc
ffe486000-ffe486fff : fman-port-hc
ffe487000-ffe487fff : fman-port-hc
ffe488000-ffe488fff : fman-port-hc
ffe489000-ffe489fff : fman-port-hc
ffe48a000-ffe48afff : fman-port-hc
ffe48b000-ffe48bfff : fman-port-hc
ffe48c000-ffe48cfff : fman-port-hc
ffe48d000-ffe48dfff : fman-port-hc
ffe490000-ffe490fff : fman-port-hc
ffe491000-ffe491fff : fman-port-hc
ffe4a8000-ffe4a8fff : fman-port-hc
ffe4a9000-ffe4a9fff : fman-port-hc
ffe4aa000-ffe4aafff : fman-port-hc
ffe4ab000-ffe4abfff : fman-port-hc
ffe4ac000-ffe4acfff : fman-port-hc
ffe4ad000-ffe4adfff : fman-port-hc
ffe4b0000-ffe4b0fff : fman-port-hc
ffe4b1000-ffe4b1fff : fman-port-hc
ffe4dc000-ffe4dcfff : fman-vsp
ffe4e0000-ffe4e0fff : mac
ffe4e2000-ffe4e2fff : mac
ffe4e4000-ffe4e4fff : mac
ffe4e6000-ffe4e6fff : mac
ffe4f0000-ffe4f0fff : mac
ffe4f2000-ffe4f2fff : mac
ffe4fe000-ffe4fefff : fman-rtc
I asked myself, why does the RAM memory start in 0x000000000? Are there any reason? Could I map in another address? what about the rest of the devices? are there any restriction?
BR
