[U-Boot] [PATCH v2] arm64: Add SMC and HVC commands

[Michalis Pappas]

On 04/09/2018 04:25 PM, Tom Rini wrote:
> On Mon, Apr 09, 2018 at 04:11:01PM +0300, Michalis Pappas wrote:
>> This patch adds smc and hvc commands, that allow issuing Secure Monitor
>> Calls and Hypervisor Calls conforming to the ARM SMC Calling Convention.
>>
>> Add Kconfig items to allow each command can be individually enabled.
>>
>> Signed-off-by: Michalis Pappas <mpappas at fastmail.fm>
>> ---
>>
>>   cmd/Kconfig  | 14 ++++++++++
>>   cmd/Makefile |  2 ++
>>   cmd/smccc.c  | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>>   3 files changed, 88 insertions(+)
>>   create mode 100644 cmd/smccc.c
>>
>> diff --git a/cmd/Kconfig b/cmd/Kconfig
>> index 136836d146..a2b09620f3 100644
>> --- a/cmd/Kconfig
>> +++ b/cmd/Kconfig
>> @@ -1348,6 +1348,20 @@ config CMD_HASH
>>   	  saved to memory or to an environment variable. It is also possible
>>   	  to verify a hash against data in memory.
>>
>> +config CMD_HVC
>> +	bool "Support the 'hvc' command"
>> +	depends on ARM64
>> +	help
>> +	  Allows issuing Hypervisor Calls (HVCs). Mostly useful for
>> +	  development and testing.
>> +
>> +config CMD_SMC
>> +	bool "Support the 'smc' command"
>> +	depends on ARM64
>> +	help
>> +	  Allows issuing Secure Monitor Calls (SMCs). Mostly useful for
>> +	  development and testing.
> Sorry for not catching this before, in both cases we should depend on
> ARM_SMCC as that's what provides the underlying functions and is
> available on both ARMv7 and ARMv8.
>

Ah, you're right, I should had spotted that too. Will replace the ARM64 
dependendy with ARM_SMCCC and issue another patch.

Thanks