Re: [U-Boot] [PATCH v3 08/14] fit: fdt overlays doc

[sjg]

On 4 September 2017 at 14:12, Pantelis Antoniou
 wrote:
> Signed-off-by: Pantelis Antoniou 
> ---
>  doc/uImage.FIT/command_syntax_extensions.txt |  12 +-
>  doc/uImage.FIT/overlay-fdt-boot.txt  | 221 
> +++
>  doc/uImage.FIT/source_file_format.txt|   6 +-
>  3 files changed, 236 insertions(+), 3 deletions(-)
>  create mode 100644 doc/uImage.FIT/overlay-fdt-boot.txt
>

Acked-by: Simon Glass 

Applied to u-boot-fdt thanks!
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Re: [U-Boot] [PATCH v3 08/14] fit: fdt overlays doc

[Simon Glass]

On 4 September 2017 at 14:12, Pantelis Antoniou
 wrote:
> Signed-off-by: Pantelis Antoniou 
> ---
>  doc/uImage.FIT/command_syntax_extensions.txt |  12 +-
>  doc/uImage.FIT/overlay-fdt-boot.txt  | 221 
> +++
>  doc/uImage.FIT/source_file_format.txt|   6 +-
>  3 files changed, 236 insertions(+), 3 deletions(-)
>  create mode 100644 doc/uImage.FIT/overlay-fdt-boot.txt
>

Acked-by: Simon Glass 
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Re: [U-Boot] [PATCH v3 08/14] fit: fdt overlays doc

[Pantelis Antoniou]

Hi Lukasz,

On Wed, 2017-09-06 at 21:06 +0200, Łukasz Majewski wrote:
> On 09/04/2017 10:12 PM, Pantelis Antoniou wrote:
> > Signed-off-by: Pantelis Antoniou 
> > ---
> >   doc/uImage.FIT/command_syntax_extensions.txt |  12 +-
> >   doc/uImage.FIT/overlay-fdt-boot.txt  | 221 
> > +++
> >   doc/uImage.FIT/source_file_format.txt|   6 +-
> >   3 files changed, 236 insertions(+), 3 deletions(-)
> >   create mode 100644 doc/uImage.FIT/overlay-fdt-boot.txt
> > 
> > diff --git a/doc/uImage.FIT/command_syntax_extensions.txt 
> > b/doc/uImage.FIT/command_syntax_extensions.txt
> > index 6c99b1c..676f992 100644
> > --- a/doc/uImage.FIT/command_syntax_extensions.txt
> > +++ b/doc/uImage.FIT/command_syntax_extensions.txt
> > @@ -36,7 +36,7 @@ Old uImage:
> >   New uImage:
> >   8.  bootm 
> >   9.  bootm []:
> > -10. bootm []#
> > +10. bootm []#[# >   11. bootm []: []:
> >   12. bootm []: []: []:
> >   13. bootm []: []: 
> > @@ -129,6 +129,12 @@ following syntax:
> >   - new uImage configuration specification
> >   #
> >   
> > +- new uImage configuration specification with extra configuration 
> > components
> > +#[#[#..]]
> > +
> > +The extra configuration currently is supported only for additional device 
> > tree
> > +overlays to apply on the base device tree supplied by the first 
> > configuration
> > +unit.
> >   
> >   Examples:
> >   
> > @@ -138,6 +144,10 @@ bootm 20:kernel@1
> >   - boot configuration "cfg@1" from a new uImage located at 20:
> >   bootm 20#cfg@1
> >   
> > +- boot configuration "cfg@1" with extra "cfg@2" from a new uImage located
> > +  at 20:
> > +bootm 20#cfg@1#cfg@2
> > +
> >   - boot "kernel@1" from a new uImage at 20 with initrd "ramdisk@2" 
> > found in
> > some other new uImage stored at address 80:
> >   bootm 20:kernel@1 80:ramdisk@2
> > diff --git a/doc/uImage.FIT/overlay-fdt-boot.txt 
> > b/doc/uImage.FIT/overlay-fdt-boot.txt
> > new file mode 100644
> > index 000..dbdf2a1
> > --- /dev/null
> > +++ b/doc/uImage.FIT/overlay-fdt-boot.txt
> > @@ -0,0 +1,221 @@
> > +U-Boot FDT Overlay usage
> > +
> > +
> > +Introduction
> > +
> > +In many cases it is desirable to have a single FIT image support a 
> > multitude
> > +of similar boards and their expansion options. The same kernel on DT 
> > enabled
> > +platforms can support this easily enough by providing a DT blob upon boot
> > +that matches the desired configuration.
> > +
> > +Configuration without overlays
> > +--
> > +
> > +Take a hypothetical board named 'foo' where there are different supported
> > +revisions, reva and revb. Assume that both board revisions can use add a 
> > bar
> > +add-on board, while only the revb board can use a baz add-on board.
> > +
> > +Without using overlays the configuration would be as follows for every 
> > case.
> > +
> > +   /dts-v1/;
> > +   / {
> > +   images {
> > +   kernel@1 {
> > +   data = /incbin/("./zImage");
> > +   type = "kernel";
> > +   arch = "arm";
> > +   os = "linux";
> > +   load = <0x8200>;
> > +   entry = <0x8200>;
> > +   };
> > +   fdt@1 {
> > +   data = /incbin/("./foo-reva.dtb");
> > +   type = "flat_dt";
> > +   arch = "arm";
> > +   };
> > +   fdt@2 {
> > +   data = /incbin/("./foo-revb.dtb");
> > +   type = "flat_dt";
> > +   arch = "arm";
> > +   };
> > +   fdt@3 {
> > +   data = /incbin/("./foo-reva-bar.dtb");
> > +   type = "flat_dt";
> > +   arch = "arm";
> > +   };
> > +   fdt@4 {
> > +   data = /incbin/("./foo-revb-bar.dtb");
> > +   type = "flat_dt";
> > +   arch = "arm";
> > +   };
> > +   fdt@5 {
> > +   data = /incbin/("./foo-revb-baz.dtb");
> > +   type = "flat_dt";
> > +   arch = "arm";
> > +   };
> > +   fdt@6 {
> > +   data = /incbin/("./foo-revb-bar-baz.dtb");
> > +   type = "flat_dt";
> > +   arch = "arm";
> > +   };
> > +   };
> > +
> > +   configurations {
> > +   default = "foo-reva.dtb;
> > +   foo-reva.dtb {
> > +   kernel = "kernel@1";
> > +   fdt = 

Re: [U-Boot] [PATCH v3 08/14] fit: fdt overlays doc

[Łukasz Majewski]

On 09/04/2017 10:12 PM, Pantelis Antoniou wrote:

Signed-off-by: Pantelis Antoniou 
---
  doc/uImage.FIT/command_syntax_extensions.txt |  12 +-
  doc/uImage.FIT/overlay-fdt-boot.txt  | 221 +++
  doc/uImage.FIT/source_file_format.txt|   6 +-
  3 files changed, 236 insertions(+), 3 deletions(-)
  create mode 100644 doc/uImage.FIT/overlay-fdt-boot.txt

diff --git a/doc/uImage.FIT/command_syntax_extensions.txt 
b/doc/uImage.FIT/command_syntax_extensions.txt
index 6c99b1c..676f992 100644
--- a/doc/uImage.FIT/command_syntax_extensions.txt
+++ b/doc/uImage.FIT/command_syntax_extensions.txt
@@ -36,7 +36,7 @@ Old uImage:
  New uImage:
  8.  bootm 
  9.  bootm []:
-10. bootm []#
+10. bootm []#[#;
+   entry = <0x8200>;
+   };
+   fdt@1 {
+   data = /incbin/("./foo-reva.dtb");
+   type = "flat_dt";
+   arch = "arm";
+   };
+   fdt@2 {
+   data = /incbin/("./foo-revb.dtb");
+   type = "flat_dt";
+   arch = "arm";
+   };
+   fdt@3 {
+   data = /incbin/("./foo-reva-bar.dtb");
+   type = "flat_dt";
+   arch = "arm";
+   };
+   fdt@4 {
+   data = /incbin/("./foo-revb-bar.dtb");
+   type = "flat_dt";
+   arch = "arm";
+   };
+   fdt@5 {
+   data = /incbin/("./foo-revb-baz.dtb");
+   type = "flat_dt";
+   arch = "arm";
+   };
+   fdt@6 {
+   data = /incbin/("./foo-revb-bar-baz.dtb");
+   type = "flat_dt";
+   arch = "arm";
+   };
+   };
+
+   configurations {
+   default = "foo-reva.dtb;
+   foo-reva.dtb {
+   kernel = "kernel@1";
+   fdt = "fdt@1";
+   };
+   foo-revb.dtb {
+   kernel = "kernel@1";
+   fdt = "fdt@2";
+   };
+   foo-reva-bar.dtb {
+   kernel = "kernel@1";
+   fdt = "fdt@3";
+   };
+