Is here way to have 9600+ serial console and see boot0 message?

[Lev Serebryakov]

On 06.09.2018 20:11, Gary Jennejohn wrote:

>> On 05.09.2018 21:12, Jung-uk Kim wrote:
>>
>>> Put this line in /etc/make.conf.
>>>
>>> BOOT_BOOT0_COMCONSOLE_SPEED=0
>>>
>>> Then, boot0sio will not change serial port configuration.  
>>
>>  I've tried this, and it doesn't help. Maybe, BIOS reset settings before
>> calling boot code.
>>
> 
> The answer is in the Makefile.  All possible supported baud rates
> are checked there.  If the value set in
> BOOT_BOOT0_COMCONSOLE_SPEED does not match one of the
> pre-defined values, it defaults to 9600 baud.  Since 0 is not a
> valid baudrate, 9600 is used.
  Nope. If BOOT_BOOT0_COMCONSOLE_SPEED defined, it is used as-is. If it
is not defined it is derived from BOOT_COMCONSOLE_SPEED. So, defining it
to "0" should work. And disassembling boot0sio confirms it.

.if !defined(BOOT_BOOT0_COMCONSOLE_SPEED)
BOOT_COMCONSOLE_SPEED?=	9600
.if ${BOOT_COMCONSOLE_SPEED} == 9600
BOOT_BOOT0_COMCONSOLE_SPEED=	"7 << 5 + 3"
.elif ${BOOT_COMCONSOLE_SPEED} == 4800
BOOT_BOOT0_COMCONSOLE_SPEED=	"6 << 5 + 3"
.elif ${BOOT_COMCONSOLE_SPEED} == 2400
BOOT_BOOT0_COMCONSOLE_SPEED=	"5 << 5 + 3"
.elif ${BOOT_COMCONSOLE_SPEED} == 1200
BOOT_BOOT0_COMCONSOLE_SPEED=	"4 << 5 + 3"
.elif ${BOOT_COMCONSOLE_SPEED} == 600
BOOT_BOOT0_COMCONSOLE_SPEED=	"3 << 5 + 3"
.elif ${BOOT_COMCONSOLE_SPEED} == 300
BOOT_BOOT0_COMCONSOLE_SPEED=	"2 << 5 + 3"
.elif ${BOOT_COMCONSOLE_SPEED} == 150
BOOT_BOOT0_COMCONSOLE_SPEED=	"1 << 5 + 3"
.elif ${BOOT_COMCONSOLE_SPEED} == 110
BOOT_BOOT0_COMCONSOLE_SPEED=	"0 << 5 + 3"
.else
BOOT_BOOT0_COMCONSOLE_SPEED=	"7 << 5 + 3"
.endif
.endif



-- 
// Lev Serebryakov