Re: [U-Boot] [PATCH 1/1] rockchip: rk3288: provide ${fdtfile}

[Heinrich Schuchardt]

On 04/13/2018 10:01 AM, Kever Yang wrote:

Hi Heinrich,

     Does this fdtfile will used for kernel? There should be a fdt config
for kernel dtb in boot config file,

and we should not use U-Boot dtb for kernel, they are different.


Thanks,
- Kever
On 04/13/2018 03:54 PM, Kever Yang wrote:

Hi Heinrich,

     What kind of issue do you met without this patch?

I think distro boot always work fine in my side without this patch.


Run make tinker-rk3288_defconfig

In the environment you get:
  soc=rockchip
  board=tinker_rk3288

According to doc/README.pxe:

  If the fdtfile environment variable is set, / is
  retrieved. Otherwise, the filename is generated from the soc and
  board environment, i.e. /-.dtb is retrieved.

The logic is implemented in file cmd/pxe.c.

So instead of retrieving tinker_rk3288.dtb we will try to read 
rockchip-tinker_rk3288.dtb which is incorrect.


If you want to look downstream, Debian package flash-kernel uses 
${fdtfile} as the preferred way to identify the dtb file. The variable 
is prerequisite for images that shall run on different SOCs.

See /etc/flash-kernel/bootscript/bootscr.uboot-generic.

Best regards

Heinrich



Thanks,
- Kever
On 04/13/2018 06:45 AM, Heinrich Schuchardt wrote:

All rk3288 default configs define CONFIG_DEFAULT_DEVICE_TREE.
So we can use it to define ${fdtfile} in rk3288_common.h.

This variable is needed by the distro boot command.

Signed-off-by: Heinrich Schuchardt 
---
  include/configs/rk3288_common.h | 1 +
  1 file changed, 1 insertion(+)

diff --git a/include/configs/rk3288_common.h b/include/configs/rk3288_common.h
index 78595b86ec..762a206143 100644
--- a/include/configs/rk3288_common.h
+++ b/include/configs/rk3288_common.h
@@ -73,6 +73,7 @@
  #define CONFIG_EXTRA_ENV_SETTINGS \
"fdt_high=0x0fff\0" \
"initrd_high=0x0fff\0" \
+   "fdtfile=" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
"partitions=" PARTS_DEFAULT \
ENV_MEM_LAYOUT_SETTINGS \
ROCKCHIP_DEVICE_SETTINGS \


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Re: [U-Boot] [PATCH 1/1] rockchip: rk3288: provide ${fdtfile}

[Mark Kettenis]

> From: Kever Yang 
> Date: Fri, 13 Apr 2018 15:54:07 +0800
> 
> Hi Heinrich,
> 
>     What kind of issue do you met without this patch?
> 
> I think distro boot always work fine in my side without this patch.

Without this, U-Boot won't load a new device tree from disk before
starting the EFI application.  This means the device tree provided by
U-Boot will be used which doesn't work very well with newer kernels.

> Thanks,
> - Kever
> On 04/13/2018 06:45 AM, Heinrich Schuchardt wrote:
> > All rk3288 default configs define CONFIG_DEFAULT_DEVICE_TREE.
> > So we can use it to define ${fdtfile} in rk3288_common.h.
> >
> > This variable is needed by the distro boot command.
> >
> > Signed-off-by: Heinrich Schuchardt 
> > ---
> >  include/configs/rk3288_common.h | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/include/configs/rk3288_common.h 
> > b/include/configs/rk3288_common.h
> > index 78595b86ec..762a206143 100644
> > --- a/include/configs/rk3288_common.h
> > +++ b/include/configs/rk3288_common.h
> > @@ -73,6 +73,7 @@
> >  #define CONFIG_EXTRA_ENV_SETTINGS \
> > "fdt_high=0x0fff\0" \
> > "initrd_high=0x0fff\0" \
> > +   "fdtfile=" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
> > "partitions=" PARTS_DEFAULT \
> > ENV_MEM_LAYOUT_SETTINGS \
> > ROCKCHIP_DEVICE_SETTINGS \
> 
> 
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Re: [U-Boot] [PATCH 1/1] rockchip: rk3288: provide ${fdtfile}

[Kever Yang]

Hi Heinrich,

    Does this fdtfile will used for kernel? There should be a fdt config
for kernel dtb in boot config file,

and we should not use U-Boot dtb for kernel, they are different.


Thanks,
- Kever
On 04/13/2018 03:54 PM, Kever Yang wrote:
> Hi Heinrich,
>
>     What kind of issue do you met without this patch?
>
> I think distro boot always work fine in my side without this patch.
>
> Thanks,
> - Kever
> On 04/13/2018 06:45 AM, Heinrich Schuchardt wrote:
>> All rk3288 default configs define CONFIG_DEFAULT_DEVICE_TREE.
>> So we can use it to define ${fdtfile} in rk3288_common.h.
>>
>> This variable is needed by the distro boot command.
>>
>> Signed-off-by: Heinrich Schuchardt 
>> ---
>>  include/configs/rk3288_common.h | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/include/configs/rk3288_common.h 
>> b/include/configs/rk3288_common.h
>> index 78595b86ec..762a206143 100644
>> --- a/include/configs/rk3288_common.h
>> +++ b/include/configs/rk3288_common.h
>> @@ -73,6 +73,7 @@
>>  #define CONFIG_EXTRA_ENV_SETTINGS \
>>  "fdt_high=0x0fff\0" \
>>  "initrd_high=0x0fff\0" \
>> +"fdtfile=" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
>>  "partitions=" PARTS_DEFAULT \
>>  ENV_MEM_LAYOUT_SETTINGS \
>>  ROCKCHIP_DEVICE_SETTINGS \
>
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Re: [U-Boot] [PATCH 1/1] rockchip: rk3288: provide ${fdtfile}

[Kever Yang]

Hi Heinrich,

    What kind of issue do you met without this patch?

I think distro boot always work fine in my side without this patch.

Thanks,
- Kever
On 04/13/2018 06:45 AM, Heinrich Schuchardt wrote:
> All rk3288 default configs define CONFIG_DEFAULT_DEVICE_TREE.
> So we can use it to define ${fdtfile} in rk3288_common.h.
>
> This variable is needed by the distro boot command.
>
> Signed-off-by: Heinrich Schuchardt 
> ---
>  include/configs/rk3288_common.h | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/include/configs/rk3288_common.h b/include/configs/rk3288_common.h
> index 78595b86ec..762a206143 100644
> --- a/include/configs/rk3288_common.h
> +++ b/include/configs/rk3288_common.h
> @@ -73,6 +73,7 @@
>  #define CONFIG_EXTRA_ENV_SETTINGS \
>   "fdt_high=0x0fff\0" \
>   "initrd_high=0x0fff\0" \
> + "fdtfile=" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
>   "partitions=" PARTS_DEFAULT \
>   ENV_MEM_LAYOUT_SETTINGS \
>   ROCKCHIP_DEVICE_SETTINGS \


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