On Fri, 2 Dec 2011, Scott Wood wrote:
On 12/02/2011 05:19 PM, Robert P. J. Day wrote:
and, at this point, i would think that all i need to do is:
=> bootm 400000 ## Booting image at 00400000 ... Image Name: Linux-2.6.37 Created: 2011-12-02 23:08:06 UTC Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1301506 Bytes = 1.2 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK
You need to use a cuImage, just as you did with lite5200.
i believe i've solved this issue, at least. i downloaded ELDK 4.2 and installed the ppc_8xx- toolchain. with that, i managed to compile u-boot 2010.12 and flashed it to my TQM860, reset and, lo and behold, i have a 2010.12 u-boot. so my u-boot issue seems to be resolved.
Or update U-Boot and pass a device tree.
and that's where it hangs.
i have no idea if it's still booting properly but i've simply screwed up the serial port setting.
does this set of steps look reasonable? the configuration, the building, the TFTP, the verification steps, the "bootm" command? this is what's printed when the board resets:
U-Boot 0.4.0 (Apr 13 2004 - 15:01:22)
CPU: XPC860xxZPnnD4 at 80 MHz: 16 kB I-Cache 8 kB D-Cache FEC present Board: TQM860LDB0A3-P80.208 DRAM: 16 MB FLASH: 8 MB In: serial Out: serial Err: serial Net: SCC ETHERNET [PRIME], FEC ETHERNET PCMCIA: No Card found
am i just missing something obvious? what should i use for the kernel console setting? i'm open to suggestions.
console=ttyCPM0
ok, i'm still having trouble getting a bootable kernel so here's what i did. using 2.6.37 version of kernel source, i followed your advice and first just configured for the 860 with:
$ make ARCH=powerpc tqm8xx_defconfig
then
$ make ARCH=powerpc uImage
which generated a uImage file. but as i understand it, i want a cuImage-format file as i used with my lite5200, so i edited the file arch/powerpc/boot/wrapper (as you suggested) and made the following change:
case "$platform" in *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc|*-tqm8xx) ^^^^^^^^^ added
which now allows me to do the following:
$ make ARCH=powerpc cuImage.tqm8xx
and it's my understanding that this is the file i'll TFTP down to the TQM860 board and boot, correct?
here's a look at that file:
$ mkimage -l /var/lib/tftpboot/cuImage.tqm8xx Image Name: Linux-2.6.37 Created: Sun Dec 4 20:51:56 2011 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1258640 Bytes = 1229.14 kB = 1.20 MB Load Address: 0x00400000 Entry Point: 0x0040055C $
look reasonable? so i download to the board to address 200000, check it:
=> imi 200000
## Checking Image at 00200000 ... Legacy image found Image Name: Linux-2.6.37 Created: 2011-12-05 1:51:56 UTC Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1258640 Bytes = 1.2 MiB Load Address: 00400000 Entry Point: 0040055c Verifying Checksum ... OK =>
but at this point, any attempt to "bootm 200000" gives me (as before):
## Booting kernel from Legacy Image at 00200000 ... Image Name: Linux-2.6.37 Created: 2011-12-05 1:51:56 UTC Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1258640 Bytes = 1.2 MiB Load Address: 00400000 Entry Point: 0040055c Verifying Checksum ... OK Uncompressing Kernel Image ... OK
immediately followed by a long line of diamonds with question marks inside them. i would assume i've just screwed up the console setting, but i've tried various combinations of tty0, ttyS0 and ttyCPM0, with different baud rates. any hint as to what i should be looking at?
i suspect i'm close, i just have this last issue to deal with. thanks.
rday