On 02/24/2010 11:48 AM, Scott Wood wrote:
Gary Thomas wrote:
Does anyone have experience setting up the PCI controller on
the MPC8349? I have it running fine when my system has 128MB
or less of main memory, but when I have 256MB or more, it all
falls apart :-(
Any indication of the pertinent settings would be appreciated.
Check the inbound PCI translation registers, especially PIWARn.
Yes, I set it to 256MB (the size of RAM).
I also set PCI_AR0 to a 512MB window (when it's set to 256, I
get address [segmentation violation] errors when accessing my
devices that end up at the high end of the logical address space)
Finally, I set POCMR0 to a 512MB window (corresponding to PCI_AR0)
In this configuration, my device doesn't seem to be able to
access RAM. If PIWAR1 is too small, the device just hangs.
=============================== 128MB setup =========================
PIWAR1 = 0xA0055000 | (27-1)
POCMR0 = 0x800F0000
PCIAR0 = 0x80000000 | (28-1)
00:00.0 Power PC: Unknown device 1957:0082 (rev 30)
Flags: bus master, 66MHz, fast devsel, latency 0
Memory at cc000000 (32-bit, non-prefetchable) [size=1M]
Memory at c0000000 (64-bit, prefetchable) [size=128M]
Memory at <unassigned> (64-bit, non-prefetchable)
Capabilities: [48] #06 [0000]
00:0b.0 Mass storage controller: Silicon Image, Inc. SiI 3512
[SATALink/SATARaid] Serial ATA Controller (rev 01)
Subsystem: Silicon Image, Inc. SiI 3512 SATALink Controller
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 22
I/O ports at 1000 [size=8]
I/O ports at 1008 [size=4]
I/O ports at 1010 [size=8]
I/O ports at 1018 [size=4]
I/O ports at 1020 [size=16]
Memory at cc180000 (32-bit, non-prefetchable) [size=512]
[virtual] Expansion ROM at cc100000 [disabled] [size=512K]
Capabilities: [60] Power Management version 2
00:0c.0 Display controller: Fujitsu Limited. Unknown device 2019 (rev 01)
Flags: bus master, medium devsel, latency 0, IRQ 19
Memory at c8000000 (32-bit, non-prefetchable) [size=64M]
=====================================================================
=============================== 256MB setup =========================
PIWAR1 = 0xA0055000 | (28-1)
POCMR0 = 0x800E0000
PCIAR0 = 0x80000000 | (29-1)
00:00.0 Power PC: Unknown device 1957:0082 (rev 30)
Flags: bus master, 66MHz, fast devsel, latency 0
Memory at d4000000 (32-bit, non-prefetchable) [size=1M]
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at <unassigned> (64-bit, non-prefetchable)
Capabilities: [48] #06 [0000]
00:0b.0 Mass storage controller: Silicon Image, Inc. SiI 3512
[SATALink/SATARaid] Serial ATA Controller (rev 01)
Subsystem: Silicon Image, Inc. SiI 3512 SATALink Controller
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 22
I/O ports at 1000 [size=8]
I/O ports at 1008 [size=4]
I/O ports at 1010 [size=8]
I/O ports at 1018 [size=4]
I/O ports at 1020 [size=16]
Memory at d4180000 (32-bit, non-prefetchable) [size=512]
[virtual] Expansion ROM at d4100000 [disabled] [size=512K]
Capabilities: [60] Power Management version 2
00:0c.0 Display controller: Fujitsu Limited. Unknown device 2019 (rev 01)
Flags: bus master, medium devsel, latency 0, IRQ 19
[virtual] Memory at d0000000 (32-bit, non-prefetchable) [size=64M]
=====================================================================
Any ideas what I might be missing?
Thanks
--
------------------------------------------------------------
Gary Thomas | Consulting for the
MLB Associates | Embedded world
------------------------------------------------------------
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