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On Sun, 2010-06-06 at 18:34 +0200, Marek Vasut wrote:
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<PRE>
Dne Ne 6. června 2010 10:17:00 Eric Miao napsal(a):
> On Sun, Jun 6, 2010 at 1:19 AM, Marek Vasut <<A HREF="mailto:marek.vasut@gmail.com">marek.vasut@gmail.com</A>> wrote:
> > Dne Út 1. června 2010 07:44:18 balakrishnan napsal(a):
> >> I am working on pxa300 based development board and using Linux 2.6.34.
> >> This Linux kernel already has support for following boards
> >> 1. zylonite_pxa300
> >> 2. cm-x300
> >> 3. colibri-pxa300
> >> 4. littleton
> >>
> >> My doubt is that pxa300 based boards are using "0xa0000000" as DDRAM
> >> base and PHYS_OFFSET is also defined in
> >> "arch/arm/mach-pxa/include/mach/memory.h" as 0xa0000000.
> >> But in our board DDR is mapped in 0x80000000. Does it make any
> >> problem?. Because after mmu is turned ON, my board is hanging.
> >>
> >> "zreladdr-y := 0x80008000" is defined in
> >> "arch/arm/mach-pxa/Makefile.boot" file .
> >> my machine_desc is as follows
> >> .phys_io = 0x40000000,
> >> .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
> >> .boot_params = 0x80000100,
> >
> > Try editing both arch/arm/mach-pxa/Makefile.boot and
> > arch/arm/mach/pxa/include/mach/memory.h
> >
> >> With Thanks
> >> J.Balakrishnan
> >
> > The 0x80000000 should be aliased to 0xa0000000, but looking into the PXA
> > docs, it is only on pxa320. Eric, any ideas on this ?
>
> Should be working on pxa300/310 as well. If it doesn't, check you
> bootloader to make sure the mapping is OK, and memory doesn't exceed
> (0xa000_0000 - 0x8000_0000).
It worked last time I used the pxa310 littleton board, but I can't check on the
pxa300 zylonite board just yet.
Could you give us your bootloader details ?
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hi, <BR>
Now, I can able to boot after editing following files arch/arm/mach-pxa/Makefile.boot and arch/arm/mach/pxa/include/mach/memory.h (0x80000000 changed to 0xa0000000). My doubt is <BR>
1.why 0x80000000 (DDR phy address) is aliased to 0xa0000000 in pxa architecture?<BR>
2.In my development board two DDRAMs mapped at 0x80000000-0x88000000 and 0xc0000000-0xc8000000, how can I inform to kernel about this different bank and size?.<BR>
<BR>
My Boot loader details,<BR>
------------------------------<BR>
=>bdi<BR>
arch_number = 0x00000B04<BR>
env_t = 0x00000000<BR>
boot_params = 0x80000100<BR>
DRAM bank = 0x00000000<BR>
-> start = 0x80000000<BR>
-> size = 0x08000000<BR>
DRAM bank = 0x00000001<BR>
-> start = 0xC0000000<BR>
-> size = 0x08000000<BR>
ethaddr = 08:00:3e:26:0a:5b<BR>
ip_addr = 192.168.0.21<BR>
baudrate = 115200 bps<BR>
=>ver<BR>
U-Boot 2010.03 (Jun 01 2010 - 14:27:43)<BR>
<BR>
<BR>
With Thanks<BR>
J.Balakrishnan
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