Re: [PATCH v2 18/22] ARM: beagleplay: add binary files

[Sascha Hauer <s.hauer@pengutronix.de>]

On Mon, Jan 06, 2025 at 03:33:16PM +0100, Ahmad Fatoum wrote:
> Hello Sascha,
> 
> On 06.01.25 14:47, Sascha Hauer wrote:
> > These files are generated from yaml files in U-Boot. Ideally we would
> > use these yaml files and convert them ourselves, but for now just use
> > the binary files and leave the conversion for later patches.
> > 
> 
> What do these blobs do?

They contain various configuration options evaluated by the ROM.
There are four yaml files: board-cfg.yaml, pm-cfg.yaml, rm-cfg.yaml and
sec-cfg.yaml. An example board-cfg.yaml looks like this:

board-cfg:
    rev:
        boardcfg_abi_maj: 0x0
        boardcfg_abi_min: 0x1
    control:
        subhdr:
            magic: 0xC1D3
            size: 7
        main_isolation_enable: 0x5A
        main_isolation_hostid: 0x2
    secproxy:
        subhdr:
            magic: 0x1207
            size: 7
        scaling_factor: 0x1
        scaling_profile: 0x1
        disable_main_nav_secure_proxy: 0
    msmc:
        subhdr:
            magic: 0xA5C3
            size: 5
        msmc_cache_size: 0x0
    debug_cfg:
        subhdr:
            magic: 0x020C
            size: 8
        trace_dst_enables: 0x00
        trace_src_enables: 0x00

These files are loaded and evaluated against a schema and then
serialized. The yaml files are added for each board in U-Boot, many of
them are identical and hardly ever touched once added to the U-Boot
tree.

I haven't yet found any TI documentation about the binaries.

> 
> > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> > ---
> >  arch/arm/boards/beagleplay/combined-dm-cfg.bin    | Bin 0 -> 1346 bytes
> >  arch/arm/boards/beagleplay/combined-sysfw-cfg.bin | Bin 0 -> 1740 bytes
> >  2 files changed, 0 insertions(+), 0 deletions(-)
> > 
> > diff --git a/arch/arm/boards/beagleplay/combined-dm-cfg.bin b/arch/arm/boards/beagleplay/combined-dm-cfg.bin
> > new file mode 100644
> > index 0000000000..83fb5ee925
> > Binary files /dev/null and b/arch/arm/boards/beagleplay/combined-dm-cfg.bin differ
> > diff --git a/arch/arm/boards/beagleplay/combined-sysfw-cfg.bin b/arch/arm/boards/beagleplay/combined-sysfw-cfg.bin
> > new file mode 100644
> > index 0000000000..25f35d46ce
> > Binary files /dev/null and b/arch/arm/boards/beagleplay/combined-sysfw-cfg.bin differ
> 
> We haven't had any binary files in barebox' git so far. Do we want to start now?
> 
> Can we make these firmware/ blobs, until the YAML tooling is imported?

By that you mean just move them from the board directory to firmware/ or
something else?

Sascha

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