problem backporting talitos for MPC8272

[Alexandru Ionut Grama]

You're right Scott, there's no section in arch/powerpc/boot/Makefile
involving dts file for mpc8272ads.

Well some time ago I've already write an email explaining that I've try to
port a custom board patch from 2.6.21 to 2.6.35. I can't make the changes
properly in 2.6.35, so that's why I've decided to backport cryptoAPI and
talitos to 2.6.21.

 Because it's custom, the CPM_MAP_ADDR it's change from 0xF0000000 to
0xFF000000. ¿Changing this in mpc8272ads.dts

soc8272 at f0000000 {
               #address-cells = <1>;
               #size-cells = <1>;
               #interrupt-cells = <2>;
               device_type = "soc";
               ranges = <00000000 f0000000 00053000>;
               reg = <f0000000 10000>;

 cpm at f0000000 {
                       linux,phandle = <f0000000>;
                       #address-cells = <1>;
                       #size-cells = <1>;
                       #interrupt-cells = <2>;
                       device_type = "cpm";
                       model = "CPM2";
                       ranges = <00000000 00000000 20000>;
                       reg = <0 20000>;
                       command-proc = <119c0>;
                       brg-frequency = <17D7840>;
                       cpm_clk = <BEBC200>;



to this

soc8272 at ff000000 {
               #address-cells = <1>;
               #size-cells = <1>;
               #interrupt-cells = <2>;
               device_type = "soc";
               ranges = <00000000 ff000000 00053000>;
               reg = <ff000000 10000>;

cpm at ff000000 {
                       linux,phandle = <ff000000>;
                       #address-cells = <1>;
                       #size-cells = <1>;
                       #interrupt-cells = <2>;
                       device_type = "cpm";
                       model = "CPM2";
                       ranges = <00000000 00000000 20000>;
                       reg = <0 20000>;
                       command-proc = <119c0>;
                       brg-frequency = <17D7840>;
                       cpm_clk = <BEBC200>;


should solve this issue?

Also there is change in arch/powerpc/platforms/82xx/mpc82xx_ads.c


+ static void __init m82xx_map_io(void)   /* gonza */
+ {
+     io_block_mapping(CPM_MAP_ADDR, CPM_MAP_ADDR, ((uint)(4 * 64 * 1024)),
_PAGE_IO);
+ }
+
+

define_machine(mpc82xx_ads)
  {
    .name = "MPC82xx ADS",

***************
*** 642,645 ****
--- 648,652 ----
    .get_irq =    cpm2_get_irq,
    .calibrate_decr =    m82xx_calibrate_decr,
    .restart = m82xx_restart,.halt = m82xx_halt,
+   .setup_io_mappings =    m82xx_map_io, /* gonza */

  };


Redefining the address of CPM in the dts file, the kernel "io_block_map"
properly that address without no more code?

Thank you very much.
Alexandru.


2011/1/3 Scott Wood <scottwood at freescale.com>

> On Wed, 29 Dec 2010 02:10:55 +0100
> Alexandru Ionut Grama <gramaalexandruionut at gmail.com> wrote:
>
> > My final question it's about of-tree. I have the mpc8272ads.dts file with
> a
> > tree that involves talitos, but I've changed the properties acording the
> new
> > version of it on 2.6.35. ¿This file (mpc8272ads.dts) when it's used?I
> think
> > I don't use this file for nothing (it doesn't appears on make V=1)
> because I
> > don't have a normal bootloader and I have to load the kernel like a
> > flat-binary gz, so there's no more step after building System.map.
>
> IIRC, in 2.6.21, it wasn't used on 82xx (I think there was only
> arch/ppc support for 82xx, or at best 82xx arch/powerpc support was
> just getting started).  2.6.21 is very old, and doing new development on
> it is not recommended.
>
> Why not work with the current kernel?
>
> -Scott
>
>


-- 
*---------------------------------------------------------------
Alexandru Ionut Grama
**email: gramaalexandruionut at gmail.com**
*
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