[OpenWrt-Devel] lantiq vr9 and fxs

[thomas.langer at lantiq.com]

Hello Eddi,

Eddi De Pieri wrote on 2014-10-14:
> Hi to all,
> 
> I've applied to kernel patch for vpe committed for falcon, fixed for
> vr9 ltq-vmmc, modified VGV7519 dts for passing new parameters
> 
> console=ttyLTQ0,115200 init=/etc/preinit maxvpes=1 maxtcs=1 phym=64M
> mem=62M panic=1 vpe1_load_addr=0x83e00000 vpe1_mem=2M
> vpe1_wired_tlb_entries=1

Why do you reserve 2M? The voice FW only needs 1M

> 
> Now I get:
> 
> [  175.672000] Here I am: #1
> [  175.672000] Here I am: #2
> [  175.676000] Here I am: #3
> [  175.680000] Here I am: #4
> [  175.680000] Here I am: #5
> [  175.684000] Here I am: cpu1_base_addr: 83e00000 #6
> [  175.688000] Here I am: #7
> [  175.692000] Here I am: #8
> [  175.700000] Unhandled kernel unaligned access[#1]:
> [  175.700000] CPU: 0 PID: 1516 Comm: tapidemo Not tainted 3.14.18 #40
> [  175.700000] task: 829819b0 ti: 82b54000 task.ti: 82b54000
> [  175.700000] $ 0   : 00000000 77d95290 bf001f38 cc123456
> [  175.700000] $ 4   : a3e00000 00082280 ffff0000 80000000
> [  175.700000] $ 8   : a6e5d6ef 00080080 ffff00ff 91008110
> [  175.700000] $12   : 807f807f 293f1500 00000000 00fe00fe
> [  175.700000] $16   : 82b55da0 82960000 82960000 00000000
> [  175.700000] $20   : 00000001 82b55e88 00000000 00000000
> [  175.700000] $24   : 00000000 00000000
> [  175.700000] $28   : 82b54000 82b55d60 7fd3aec8 8295ee84
> [  175.700000] Hi    : 00001b08
> [  175.700000] Lo    : 00006c20
> [  175.700000] epc   : bf001f44 0xbf001f44

This looks like a crash in the decrypt-routine, located in the bootrom.

> 
> Any suggestion?
> 

Please check the vmmc driver sources (I don't know which version is available in OpenWrt),
if it already contains something like this:

const void *ifx_mps_get_decrypt_entrypoint(void)
{
#if   defined(SYSTEM_AR9)
   return (const void *)0xbf0017c4;
#elif defined(SYSTEM_VR9)
   u32 part_number;

   part_number = IFX_MPS_CHIPID_PARTNUM_GET(*IFX_MPS_CHIPID);
   if ((part_number & 0xFFF0) == 0x01C0)
      return (const void *)0xbf001ea4;
   else
      return (const void *)0xbf001f38;
#elif defined(SYSTEM_...)
...
#endif /* SYSTEM_... */
}

I don't know, why the people from the bootrom team did not manage to provide a 
constant entry point across all chips/chip-version, but this is another story.

> On Sat, Oct 11, 2014 at 5:35 PM, Eddi De Pieri <eddi at depieri.net> wrote:
> > Hi to all,
> >
> > I've started to figure out how much work is needed to support fxs on vr9
> > board like mine.
> >
> > On  latest trunk :
> > - owsip is missing (i know is bugged with >32mbram)
> > - ltq-tapidemo is m issing
> > - lantiq falcon fxs support seems broken

Falcon and vr9 are different SoCs!

> >
> > It seems to me that by rebasing some patch for falcon should be possible to
> > make vmmc for vr9 working (or at least to build for now...).
> >
> > You agree?
> >
> > Eddi

Best Regards,
Thomas
---
There are two hard things in computer science: cache invalidation, naming things, and off-by-one errors.
---
_______________________________________________
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-devel