[boot-wrapper PATCH] Makefile: Change COUNTER_FREQ to 100 MHz

[Peter Hoyes]

On 15/02/2022 12:29, Mark Rutland wrote:
> On Tue, Feb 15, 2022 at 11:54:18AM +0000, Peter Hoyes wrote:
>> From: Peter Hoyes <Peter.Hoyes at arm.com>
>>
>> Older Arm Fast Models (AEM < RevC) had a base frequency of 24 MHz. but
>> the RevC base models use 100 MHz. There is not a robust method of
>> determining the configured base frequency at runtime, so update
>> COUNTER_FREQ to be 100 MHz.
> This looks right to me; if no-one shouts in the next day or two I'll apply
> this.
>
> In future, if we need this to be configurable, I reckon we can either add a
> specific option for this or a more general "platform" option which can also
> know about other things which aren't in the DTB.
>
> Thanks,
> Mark.

I don't think there have been any further comments - would it be 
possible to apply this?

Peter

>> Signed-off-by: Peter Hoyes <Peter.Hoyes at arm.com>
>> ---
>>   Makefile.am | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/Makefile.am b/Makefile.am
>> index 08e304a..6ebece2 100644
>> --- a/Makefile.am
>> +++ b/Makefile.am
>> @@ -13,7 +13,7 @@ SCRIPT_DIR	:= $(top_srcdir)/scripts
>>   PHYS_OFFSET	:= $(shell perl -I $(SCRIPT_DIR) $(SCRIPT_DIR)/findmem.pl $(KERNEL_DTB))
>>   UART_BASE	:= $(shell perl -I $(SCRIPT_DIR) $(SCRIPT_DIR)/findbase.pl $(KERNEL_DTB) 0 'arm,pl011')
>>   SYSREGS_BASE	:= $(shell perl -I $(SCRIPT_DIR) $(SCRIPT_DIR)/findbase.pl $(KERNEL_DTB) 0 'arm,vexpress-sysreg' 2> /dev/null)
>> -COUNTER_FREQ	:= 24000000
>> +COUNTER_FREQ	:= 100000000
>>   
>>   CPU_IDS		:= $(shell perl -I $(SCRIPT_DIR) $(SCRIPT_DIR)/findcpuids.pl $(KERNEL_DTB))
>>   NR_CPUS         := $(shell echo $(CPU_IDS) | tr ',' ' ' | wc -w)
>> -- 
>> 2.25.1
>>