On 4/19/05, Wolfgang Denk wd@denx.de wrote:
In message 528646bc0504190945638591fc@mail.gmail.com you wrote:
I'm having problems getting u-boot to boot linux from a uImage on my lite5200 eval board. I can load a zImage into ram (@ 0x200000) and use the go command to boot it with no problems. When I load a uImage
This means that your kernel is probably ok in general...
I get the bootup debug banners from the linux kernel and then the board resets before the "Linux version ..." banner (and then my
...and this means that most preobably it is not ported and/or configured for booting with U-Boot.
What specifically needs to be done to configure a kernel for use with u-boot? From the documentation I could only find references to using mkimage to prepare an image (which I've done).
The kernel I was using contains the mpc5200 patches from Sylvain, so it should be "u-boot ready". I've since moved up to stock linux kernel 2.6.12rc2 which includes the lastest patches for the mpc5200, but it made no difference. I could not find anything in the kernel config file related to u-boot for this port. The file Documentation/powerpc/mpc52xx.txt in the kernel tree states that a 'make uImage' should build an image bootable by u-boot. (The Makefile simply calls mkimage for the uImage target)
I've also updated to CVS u-boot, but again no change (but solved my FEC problems nicely)
BTW, I do get some output from the kernel. The pre-boot debug messages (from "id mach(): done" to "arch: exit") from arch/ppc/kernel/setup.c get displayed just like with the zImage. So the jump into inital setup code seems to be working.
Thanks in advance, g.