Add possibility to print text

[tiopex]

Add the possibility to print any string text to the console from uboot level. For demonstration purposes, print information about the autodetected device version. After the first run, information is not visible anymore.

[nfriedly]

1. I'm glad this is here, it's absolutely better than what we had before. 100% ship it!
2. Isn't this somewhat going about it the wrong way? Like, how does the boot process normally print text to the screen?

[tiopex]

2. Isn't this somewhat going about it the wrong way? Like, how does the boot process normally print text to the screen?

not in wrong way, but in a shortcut way. Normally should set allwinner PLL, DEBE, porchs, clocks etc... then create 320x240 framebuffer, and point it to DEBE. Here all this stuff is bypassed and written directly to LCD panel memory

[Apaczer]

It could be usefull for debug because till now I dont know how to grab uboot log msgs.

Does it reload screen buffer if there is no space left, or simply how much text you can fit in = that much can be generated?

[tiopex]

It could be usefull for debug because till now I dont know how to grab uboot log msgs.

Does it reload screen buffer if there is no space left, or simply how much text you can fit in = that much can be generated?

if current x/y is bigger than display width/height it back x/y to 0, so basically start writing from the beginning of the panel

[Apaczer]

if current x/y is bigger than display width/height it back x/y to 0, so basically start writing from the beginning of the panel

Then I suggest to fill LCD panel with black before displaying any text and after "y" is filled - like normally you would have on tty

[Apaczer]

Yeah 8x12 looks much better also lcdFillBgColor() works as requested. Thanks, this will come in handy.