# flash partitioning

- List: linuxppc-dev
- 2 messages, 2 authors
- Page: https://ratatoskr.run/linuxppc-dev/2008/08/9444942/t

## flash partitioning

- From: liran raz \<hidden\>
- Date: 2008-08-15 14:23:31 
- Message: https://ratatoskr.run/linuxppc-dev/2008/08/9444942.md

```text
hi,
Using the following configuration in the
dts file (mpc8272ads.dts):

 localbus@f0010100 {
  compatible = "fsl,mpc8272-localbus",
               "fsl,pq2-localbus";
  #address-cells = <2>;
  #size-cells = <1>;
  reg = <f0010100 40>;

  ranges = <0 0 fc000000 04000000>;
        };

flash@fc000000 {
                device_type = "rom";
                compatible = "direct-mapped";
                probe-type = "CFI";
  reg = <fc000000 04000000>;
  bank-width = <4>;
  device-width = <2>;
  #address-cells = <1>;
  #size-cells = <1>;
                partitions = <0 200000
                              2000000 a00000
                              c000000 a00000
                              16000000 600000
                              1c000000 e00000
                              2a000000 600000
                              30000000 e00000
                              3e000000 100000
                              3f000000 80000
                              3f800000 40000
                              3fc00000 40000>;
                partition-names =
"part01","part02","part03","part04","part05","part06","part07","part08","part09","part10","part11";
 };

I can't see the different partitions linked to the /dev/mtd<x>
devices in the startup messages. When testing the devices
I see that only /dev/mtd0 is actually linked to the beginning
of the flash. (other /dev/mtd1 etc.. can't be opened).
I included below also the relevant startup messages.
Does anyone have any idea what is wrong with my flash
configuration format?
Thanks, Liran.

Linux version: 2.6.24
Processor: mpc8272
Startup messages:
physmap platform flash device: 04000000 at fc000000
physmap-flash.0: Found 2 x16 devices at 0x0 in 32-bit bank
 Amd/Fujitsu Extended Query Table at 0x0040
physmap-flash.0: CFI does not contain boot bank location. Assuming top.
number of CFI chips: 1
cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
```

## Re: flash partitioning

- From: Scott Wood \<hidden\>
- Date: 2008-08-15 15:47:20 
- Message: https://ratatoskr.run/linuxppc-dev/2008/08/9444949.md

```text
On Fri, Aug 15, 2008 at 10:23:29AM -0400, liran raz wrote:
>  localbus@f0010100 {
>   compatible = "fsl,mpc8272-localbus",
>                "fsl,pq2-localbus";
>   #address-cells = <2>;
>   #size-cells = <1>;
>   reg = <f0010100 40>;
> 
>   ranges = <0 0 fc000000 04000000>;
>         };
> 
> flash@fc000000 {
>                 device_type = "rom";
>                 compatible = "direct-mapped";
>                 probe-type = "CFI";
>   reg = <fc000000 04000000>;
>   bank-width = <4>;
>   device-width = <2>;
>   #address-cells = <1>;
>   #size-cells = <1>;
>                 partitions = <0 200000
>                               2000000 a00000
>                               c000000 a00000
>                               16000000 600000
>                               1c000000 e00000
>                               2a000000 600000
>                               30000000 e00000
>                               3e000000 100000
>                               3f000000 80000
>                               3f800000 40000
>                               3fc00000 40000>;
>                 partition-names =
> "part01","part02","part03","part04","part05","part06","part07","part08","part09","part10","part11";
>  };

This is an obsolete binding; please use the current one described in
Documentation/powerpc/booting-without-of.txt, and demonstrated in the
current device tree files.

> I can't see the different partitions linked to the /dev/mtd<x>
> devices in the startup messages. When testing the devices
> I see that only /dev/mtd0 is actually linked to the beginning
> of the flash. (other /dev/mtd1 etc.. can't be opened).
> I included below also the relevant startup messages.
> Does anyone have any idea what is wrong with my flash
> configuration format?
> Thanks, Liran.
> 
> Linux version: 2.6.24
> Processor: mpc8272
> Startup messages:
> physmap platform flash device: 04000000 at fc000000
> physmap-flash.0: Found 2 x16 devices at 0x0 in 32-bit bank
>  Amd/Fujitsu Extended Query Table at 0x0040
> physmap-flash.0: CFI does not contain boot bank location. Assuming top.
> number of CFI chips: 1
> cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.

You're using physmap; you need to use physmap_of.  You may need to use a
newer kernel, as well.

-Scott
```