Wolfgang Denk <wd <at> denx.de> writes:
Why do you think that reserving memory above the BSS segmet was a problem?
And "don't even tries to ensure that there are enough memory" - well, it is obviously the responsibility of the person porting U-Boot to a specific board to come up with a valid memory map.
To be more precise I just try to ask where exactly I should make changes to reserve memory for framebuffer?
Oops? I don't understand. The existing code works fine on a couple of boards. What's your specific problem? What exactly makes you think you cannot to the same?
Existing code works fine, but writers of lib_arm/board.c and common/lcd.c for sure were thinking about different things... Code from lib_arm/board.c: size = lcd_setmem (addr); gd->fb_base = addr;
But lcd_setmem(addr) returns not size of framebuffer but addr - size and reports of reserving framebuffer at addr - size. This don't make things broken but obviously is some kind of misunderstanding...
This makes me think that somewhere (obviously not on ARM boards) we reserve framebuffer below u-boot code, so second question is why not to do this everywhere?
With best regards, Ilya.