[PATCH 7/8] board: sl28: add ATF support (bl31)

[Michael Walle <michael@walle.cc>]

Am 2020-11-18 15:06, schrieb Michal Simek:
> On 16. 11. 20 22:47, Michael Walle wrote:
>> Add support to load the bl31 part of the ARM Trusted Firmware by the
>> SPL.
>> 
>> Signed-off-by: Michael Walle <michael@walle.cc>
>> ---
>>  .../dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi  | 41 +++++++++++++-
>>  board/kontron/sl28/Kconfig                    | 10 ++++
>>  board/kontron/sl28/Makefile                   |  6 ++-
>>  board/kontron/sl28/spl_atf.c                  | 54 
>> +++++++++++++++++++
>>  4 files changed, 109 insertions(+), 2 deletions(-)
>>  create mode 100644 board/kontron/sl28/spl_atf.c
>> 
>> diff --git a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi 
>> b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
>> index 2375549c6e..4b97e9d388 100644
>> --- a/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
>> +++ b/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi
>> @@ -16,7 +16,7 @@
>>  		ethernet3 = &enetc6;
>>  	};
>> 
>> -	binman {
>> +	binman: binman {
>>  		filename = "u-boot.rom";
>>  		pad-byte = <0xff>;
>> 
>> @@ -102,6 +102,45 @@
>>  	};
>>  };
>> 
>> +#ifdef CONFIG_SL28_SPL_LOADS_ATF_BL31
>> +&binman {
>> +	fit {
>> +		images {
>> +			bl31 {
>> +				description = "ARM Trusted Firmware (bl31)";
>> +				type = "firmware";
>> +				arch = "arm";
>> +				os = "arm-trusted-firmware";
>> +				compression = "none";
>> +				load = <CONFIG_SL28_BL31_ENTRY_ADDR>;
>> +				entry = <CONFIG_SL28_BL31_ENTRY_ADDR>;
>> +
>> +				blob-ext {
>> +					filename = "bl31.bin";
>> +				};
>> +			};
>> +		};
>> +
>> +		configurations {
>> +			conf-1 {
>> +				firmware = "bl31";
>> +				loadables = "uboot", "bl31";
>> +			};
>> +
>> +			conf-2 {
>> +				firmware = "bl31";
>> +				loadables = "uboot", "bl31";
>> +			};
>> +
>> +			conf-3 {
>> +				firmware = "bl31";
>> +				loadables = "uboot", "bl31";
>> +			};
> 
> Why do you need 3 the same configurations here?

Because they differ in the fdt, but I still need to change the loadable
property if BL31/BL32 is enabled. See:

https://elixir.bootlin.com/u-boot/v2021.01-rc2/source/arch/arm/dts/fsl-ls1028a-kontron-sl28-u-boot.dtsi#L77

-michael