Hi Wolfgang,
On Wed, Mar 21, 2012 at 4:07 PM, Wolfgang Denk wd@denx.de wrote:
Dear Simon Glass,
In message CAPnjgZ0jtSioCq+u2yiaDL6cwV711duWW5uT88mE3oHB-nNmjQ@mail.gmail.com you wrote:
No. I do not want to see any PRE_CONSOLE_UART or pre_console_putc() stuff, because this is bogus. If you do output to a serial UART port, this _is_ your console. Just use it in the standard war.
I made my mind up: I want to get rid of all this "pre_console" UART stuff.
OK, so revert that commit?
It hasn't hit mainline yet, or has it?
Yes, it is there, sorry.
In that case I have a question. How can we get console output in the event of a panic before console_ready() is called?
You cannot, by definition. You cannot output anything to the console without initializing it before.
This is why initializing the serial console has always been one of the very, very first initialization steps in U-Boot.
So if actually you want a pre-console panic() to be silent then that's fine.
It's a little unfriendly though - so would you be interested in keeping board_pre_console_putc() around if we could solve this entirely with code in there? It turns out that Tegra has a setting for console UART in the hardware parameters that we can access.( I won't ask you about how to handle a panic() in SPL yet).
Regards, Simon
Best regards,
Wolfgang Denk
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