Re: [PATCH v4 16/39] board: dragonboard410c: add chainloaded config fragment

[Caleb Connolly <caleb.connolly@linaro.org>]

On 20/02/2024 14:19, Peter Robinson wrote:
> On Thu, 15 Feb 2024 at 21:03, Caleb Connolly <caleb.connolly@linaro.org> wrote:
>>
>> Add a config fragment for building U-Boot such that it can be
>> chainloaded by aboot/LK rather than being flashed directly to the aboot
>> partition.
> 
> How does this work in practice? I think a lot of devices, one example
> I see is signed vs unsigned, or emmc vs other storage, have to
> configs, how would a user choose with LK vs the other option here?

I'm not sure I understand, maybe the commit message wording was a bit
vague... There is only the default mode where U-Boot is flashed to the
aboot partition, and then the chainloaded usecase where it's wrapped in
an Android boot image and flashed to the boot partition.
> 
>> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
>> Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
>> ---
>>  board/qualcomm/dragonboard410c/configs/chainloaded.config | 7 +++++++
>>  1 file changed, 7 insertions(+)
>>
>> diff --git a/board/qualcomm/dragonboard410c/configs/chainloaded.config b/board/qualcomm/dragonboard410c/configs/chainloaded.config
>> new file mode 100644
>> index 000000000000..3fd064924a1f
>> --- /dev/null
>> +++ b/board/qualcomm/dragonboard410c/configs/chainloaded.config
>> @@ -0,0 +1,7 @@
>> +# CONFIG_ENABLE_ARM_SOC_BOOT0_HOOK is not set
>> +CONFIG_TEXT_BASE=0x0
>> +# CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR is not set
>> +# CONFIG_REMAKE_ELF is not set
>> +CONFIG_POSITION_INDEPENDENT=y
>> +CONFIG_INIT_SP_RELATIVE=y
>> +CONFIG_SYS_INIT_SP_BSS_OFFSET=524288
>>
>> --
>> 2.43.1
>>

-- 
// Caleb (they/them)