[U-Boot] [PATCH] cmd: reset: add parameters to specify reboot_mode

[Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>]

On 03.05.19 22:27, Marek Vasut wrote:
> On 5/3/19 10:25 PM, Simon Goldschmidt wrote:
>> This patch adds parameter support for the 'reset' command to specify
>> the reboot mode (cold vs. warm).
>>
>> Checking these parameters is implemented in the DM implementation.
>>
>> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
>> ---
>>
>>   cmd/boot.c                         |  4 ++--
>>   drivers/sysreset/sysreset-uclass.c | 17 ++++++++++++++++-
>>   2 files changed, 18 insertions(+), 3 deletions(-)
>>
>> diff --git a/cmd/boot.c b/cmd/boot.c
>> index 9150fce80b..c3f33a9ca3 100644
>> --- a/cmd/boot.c
>> +++ b/cmd/boot.c
>> @@ -56,9 +56,9 @@ U_BOOT_CMD(
>>   #endif
>>   
>>   U_BOOT_CMD(
>> -	reset, 1, 0,	do_reset,
>> +	reset, 2, 0,	do_reset,
>>   	"Perform RESET of the CPU",
>> -	""
>> +	"[<cold|warm>] - type of reboot"
>>   );
>>   
>>   #ifdef CONFIG_CMD_POWEROFF
>> diff --git a/drivers/sysreset/sysreset-uclass.c b/drivers/sysreset/sysreset-uclass.c
>> index ad831c703a..fbda3f44f2 100644
>> --- a/drivers/sysreset/sysreset-uclass.c
>> +++ b/drivers/sysreset/sysreset-uclass.c
>> @@ -111,9 +111,24 @@ void reset_cpu(ulong addr)
>>   
>>   int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
>>   {
>> +	enum sysreset_t reboot_mode = SYSRESET_COLD;
>> +
>> +	if (argc > 1 && argv[1]) {
>> +		switch (*argv[1]) {
>> +		case 'w':
>> +			reboot_mode = SYSRESET_WARM;
>> +			printf("warm ");
>> +			break;
>> +		case 'c':
>> +			reboot_mode = SYSRESET_COLD;
>> +			printf("cold ");
>> +			break;
> 
> This looks like a platform or driver specific stuff ?

Ouch, I just saw the extra printf might have to be removed in a v2...

Anyway, except for that, I don't think it's platform or driver specific. 
It's just a way to make the cmd 'reset' take arguments that map to enum 
sysreset_t.

There is a problem in that other platforms without UCLASS_SYSRESET don't 
handle these arguments, but I thought UCLASS_SYSRESET would be the 
future, and the rest would be "legacy"?

Regards,
SImon