[PATCH u-boot] powerpc/mpc85xx: socrates: Re-enable building u-boot-socrates.bin

[Heiko Schocher]

Hello Pali,

On 28.12.22 19:18, Pali Rohár wrote:
> U-Boot build system builds final U-Boot binary for socrates board in custom
> file u-boot-socrates.bin (instead of standard u-boot.bin). Output target
> file u-boot-socrates.bin is generated by binman as defined in board binman
> config file arch/powerpc/dts/socrates-u-boot.dtsi.
> 
> But binman was disabled in commit 5af42eafd7e1 ("Makefile: Reduce usage of
> custom mpc85xx u-boot.bin target") for all mpc85xx boards which do not use
> standard powerpc binman config file arch/powerpc/dts/u-boot.dtsi and boards
> which do not require binman at all.
> 
> The only such mpc85xx board is socrates. So since that commit, U-Boot does
> not final binary for socrates board anymore.
> 
> Fix this issue by re-enabling binman for socrates board. And build process
> starts again producing u-boot-socrates.bin binary.
> 
> Note that build process for this socrates board always produce u-boot.bin
> binary which is broken and not usable for socrates board. Long term
> solution should be to disable building broken binary u-boot.bin and then
> renaming u-boot-socrates.bin to u-boot.bin, or switching to use common
> powerpc binman config file arch/powerpc/dts/socrates-u-boot.dtsi (if it is
> possible).
> 
> Fixes: 5af42eafd7e1 ("Makefile: Reduce usage of custom mpc85xx u-boot.bin target")
> Signed-off-by: Pali Rohár <pali at kernel.org>
> ---
> Heiko Schocher: Could you test if u-boot is still working on this board?
> 
> Tom Rini: Cannot be this issue handled by CI? For example that CI check
> build process produce required output binaries?
> ---
>  arch/powerpc/cpu/mpc85xx/Kconfig | 1 +
>  1 file changed, 1 insertion(+)

With this patch, u-boot-socrates.bin is build again, so yes...

Tested-by: Heiko Schocher <hs at denx.de>

... but current u-boot does not boot anymore on this board ... I have to
dig into, obvious difference I see in hexdump is:

old (2022.01) u-boot:
"""
00001930  74 65 00 6f 66 66 73 65  74 00 73 74 64 6f 75 74  |te.offset.stdout|
00001940  2d 70 61 74 68 00 ff ff  ff ff ff ff ff ff ff ff  |-path...........|
00001950  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00020000  27 05 19 56 3c 60 e4 01  60 63 3f 10 38 63 fb f0  |'..V<`..`c?.8c..|
00020010  3c 80 e4 01 60 84 40 00  38 00 00 00 38 84 ff fc  |<...`. at .8...8...|
00020020  90 04 00 00 7c 04 18 40  40 82 ff f4 3c 80 e4 01  |....|..@@...<...|

"""

New
"""
00001930  74 65 00 6f 66 66 73 65  74 00 73 74 64 6f 75 74  |te.offset.stdout|
00001940  2d 70 61 74 68 00 ff ff  ff ff ff ff ff ff ff ff  |-path...........|
00001950  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
*
00020000  3c 60 e4 01 60 63 3f 10  38 63 fb f0 3c 80 e4 01  |<`..`c?.8c..<...|
00020010  60 84 40 00 38 00 00 00  38 84 ff fc 90 04 00 00  |`. at .8...8.......|
00020020  7c 04 18 40 40 82 ff f4  3c 80 e4 01 60 84 3f 20  ||..@@...<...`.? |

"""

So "U-Boot magic" is misssing ... reset vector at end of image is for both
the same:

000bfff0  ff ff ff ff ff ff ff ff  ff ff ff ff 4b ff f0 04  |............K...|
000c0000

I have to dig deeper into it, to find out what have changed in the meantime,
(Think I start a "git bisect") just find some more time for it...

Nevertheless, I think, this patch can go in...

bye,
Heiko

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