Greetings Scott.
I've tried both of the procedures you've outlined on the Adder875 with
the patches supplied against the paulus git tree to no avail.
Pass #1 :
Doing it safe with cuImage.8xx
Build system : Debian lenny, ELDK 4.1 uClibc
Kernel : Linux-2.6.24-rc6-g4f43143f-dirty - about two days old
Bootloader : U-Boot 1.3.1-g5c740711-dirty (Jan 15 2008 - 21:50)
#define CONFIG_OF_LIBFDT 1
#undef CONFIG_OF_FLAT_TREE
- So that U-Boot will understand the three parameter bootm.
dtc : DTC 1.1.0-rc1
I do
1. source /opt/eldk/eldk_init ppc_8xx
2. export ARCH=powerpc
3. cd linux-2.6-paulus
4. git branch adder875-patchset master
5. git checkout adder875-patchset
6. cat ../adder875_patches/adder875.patch | patch -p1
The patch applies almost perfectly - except for a minor conflict in
arch/powerpc/boot/Makefile - where I add redboot-8xx.c right after
cuboot-rainer.c manually.
7. make distclean && mrproper && clean
8. make adder875-uboot_defconfig
9. make zImage
That runs just fine - and just to prove to you I haven't done anything
funny here the last few lines of output are
HOSTLD arch/powerpc/boot/dtc
WRAP arch/powerpc/boot/cuImage.8xx
DTC: dts->dtb on file
"/home/deckard/Development/linux/linux-2.6-paulus/arch/powerpc/boot/dts/adder875-uboot.dts"
Image Name: Linux-2.6.24-rc6-g4f43143f-dirty
Created: Tue Jan 15 23:02:52 2008
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 1032266 Bytes = 1008.07 kB = 0.98 MB
Load Address: 0x00400000
Entry Point: 0x00400554
WRAP arch/powerpc/boot/zImage.redboot-8xx
DTC: dts->dtb on file
"/home/deckard/Development/linux/linux-2.6-paulus/arch/powerpc/boot/dts/adder875-uboot.dts"
cp arch/powerpc/boot/ucImage.8xx /tftpboot
The U-Boot output is :
=> tftpboot 0x400000 cuImage.8xx
Using FEC ETHERNET device
TFTP from server 192.168.0.101; our IP address is 192.168.0.202
Filename 'cuImage.8xx'.
Load address: 0x400000
Loading:
#################################################################
#################################################################
#################################################################
#######
done
Bytes transferred = 1032330 (fc08a hex)
=> bootm 0x400000
## Booting image at 00400000 ...
Image Name: Linux-2.6.24-rc6-g4f43143f-dirty
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 1032266 Bytes = 1008.1 kB
Load Address: 00400000
Entry Point: 00400554
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
I haven't as yet tried to single step through the bootup process - but,
just to say that assuming the above procedure isn't _too_ far wrong -
the stuff posted to the list agains the tree you've recommended doesn't
seem to work..
If you can point out a flaw in my usage of it - that'd help alot. I have
some code I'd love to be able to use with the Adder875+powerpc layer -
which is why I'm interested in this patchset...
Pass #2 :
Replace step 9 with.
9. make uImage
10 dtc -o ../adder875-uboot.dtb -O dtb
arch/powerpc/boot/dts/adder875-uboot.dts
cp arch/powerpc/boot/uImage /tftpboot
cp ../adder875-uboot.dtb /tftpboot
Finally in u-boot
=> tftpboot 0x400000 uImage
Using FEC ETHERNET device
TFTP from server 192.168.0.101; our IP address is 192.168.0.202
Filename 'uImage'.
Load address: 0x400000
Loading:
#################################################################
#################################################################
#################################################################
###
done
Bytes transferred = 1009496 (f6758 hex)
=> tftpboot 0x500000 adder875-uboot.dtb
Using FEC ETHERNET device
TFTP from server 192.168.0.101; our IP address is 192.168.0.202
Filename 'adder875-uboot.dtb'.
Load address: 0x500000
Loading: #
done
Bytes transferred = 3147 (c4b hex)
=> bootm 0x400000 - 0x500000
## Booting image at 00400000 ...
Image Name: Linux-2.6.24-rc6-g4f43143f-dirty
Image Type: PowerPC Linux Kernel Image (gzip compressed)
Data Size: 1009432 Bytes = 985.8 kB
Load Address: 00000000
Entry Point: 00000000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
Booting using the fdt at 0x500000
Aside from the u-boot modification of including
#define CONFIG_OF_LIBFDT 1
The rest is a pristine version of Yuli Barchoen's original U-Boot Adder
stuff.
The uImage + dtb seems to get a good bit further in that it seems to get
stuck somewhere inside of some trampoline code in time.c
(gdb) bt
#0 0xc000ee30 in __div64_32 ()
#1 0xc01d71f4 in time_init () at arch/powerpc/kernel/time.c:940
I might have a go at some proper debugging tomorrow after work.
If you have any suggestions as to what's going wrong or what I've not
done right I'd appreciate the help.
Best Regards,
BOD
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