[U-Boot-Users] How can I reserve memory for LCD framebuffer on ARM-based board?
wd at denx.de
Sat May 6 14:10:56 CEST 2006
In message <loom.20060506T115123-50 at post.gmane.org> you wrote:
> I'm working on support for LCD framebuffer on S3C240 ARM-based SoCs in
> u-boot. I faced the problem that existing code in lib_arm/board.c uses memory
> just behind .bss for framebuffer and don't even tries to ensure that there are
> enough memory (yes, my hardware uses system memory for framebuffer).
Why do you think that reserving memory above the BSS segmet was a
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.
What exactly is your problem?
> What can I do to reserve enough memory? Should I somehow relocate .bss (and
> code)? or should I reserve memory under u-boot code? (that is what lcd_setmem()
> expects as far as I can understand)
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?
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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