Hi Mikhail, > I'm trying to load Linux from U-Boot. I'm pretty new at this so there > may be some obvious things wrong with what I'm doing. > I am using ELDK 4.2 and U-Boot 2009.03 on an EP88xC rev1.1 board (MPC885 > cpu) and the linux kernel sources obtained from instructions at > "http://www.denx.de/wiki/view/DULG/LinuxConfiguration#Section_6.1.";. > > Below is my output as it currently stands (with lots of debug output):
Please disable unneccessary debug output the next time - this makes it hard to see the salient things - thanks. > > > U-Boot 2009.03-svn8591 (Jun 24 2009 - 10:24:20) > > CPU: MPC885ZPnn at 100 MHz [40.0...133.0 MHz] [...] > => setenv ethaddr 00-e0-86-0c-84-fd > eth_set_enetaddr(num=0, addr=00-e0-86-0c-84-fd) Wow, our parser groks '-' as delimiters? Didn't know that ;) > Setting new HW address on FEC ETHERNET > New Address is 00:E0:86:0C:84:FD > eth_set_enetaddr(num=0, addr=00-e0-86-0c-84-fd) > Setting new HW address on FEC ETHERNET > New Address is 00:E0:86:0C:84:FD > => tftp 400000 ep88x_uimage > Trying FEC ETHERNET > Using FEC ETHERNET device > TFTP from server 10.0.54.129; our IP address is 10.0.54.150 > Filename 'ep88x_uimage'. > Load address: 0x400000 > Loading: ################################################################# > ######## > done > Bytes transferred = 1057401 (102279 hex) > => bootm 400000 > ## Current stack ends at 0x03f70d60 > * kernel: cmdline image address = 0x00400000 > ## Booting kernel from Legacy Image at 00400000 ... > Image Name: Linux-2.6.30-rc2-01402-gd4e2f68 > Image Type: PowerPC Linux Kernel Image (gzip compressed) > Data Size: 1057337 Bytes = 1 MB > Load Address: 00000000 > Entry Point: 00000000 > Verifying Checksum ... OK > kernel data at 0x00400040, len = 0x00102239 (1057337) Ok, 2.6.30 so you definitely need a fdt for the kernel. Either pass it through U-Boot or use a cuImage wrapper in the Linux kernel. > ## No init Ramdisk > ramdisk start = 0x00000000, ramdisk end = 0x00000000 > Uncompressing Kernel Image ... OK > kernel loaded at 0x00000000, end = 0x0022421c > ## cmdline at 0x007fff00 ... 0x007fff36 > ## kernel board info at 0x007ffec0 > bd address = 0x03F70FC4 > memstart = 0x00000000 > memsize = 0x00000000 > flashstart = 0xFC000000 > flashsize = 0x02000000 > flashoffset = 0x00029000 > sramstart = 0x00000000 > sramsize = 0x00000000 > immr_base = 0xF0000000 > bootflags = 0x00000001 > intfreq = 100 MHz > busfreq = 50 MHz > ethaddr = 00:E0:86:0C:84:FD > IP addr = 10.0.54.150 > baudrate = 9600 bps > ## initrd_high = 0xffffffff, copy_to_ram = 1 > ramdisk load start = 0x00000000, ramdisk load end = 0x00000000 > ## Transferring control to Linux (at address 00000000) ... > Booting using board info... > > > Nothing happens after this. I know I still have to make a ramdisk image > to use as the root filesystem. My questions for now are: > > 1. Should I be getting any more console output given what I have so far? > Or is something wrong? You should see more output indeed - the missing rootfilesystem stops the process only after all of the kernel is initialized. > 2. I am concerned that "memsize = 0x00000000", is this normal? Actually it looks suspicious - although I just checked on a tqm5200 and its zero there as well - so I'd postpone debugging this. > 3. I tried creating and using a FDT using instructions on > "http://www.denx.de/wiki/view/DULG/LinuxFDTBlob";, loading it at > 0x00650000 and using "bootm 400000 - 650000", but the resulting output > was pretty much identical. Is that normal? Judiging from include/configs/EP88x.h you do not have FDT support enabled in your U-Boot at all (-> CONFIG_OF_LIBFDT). That the output stays the same also hints in this direction, as otherwise you'll see something like this: ## Flattened Device Tree blob at 00600000 Booting using the fdt blob at 0x600000 Uncompressing Kernel Image ... OK So with your current U-Boot you would need to use the Linux wrappers. I would suggest that you update the configuration to include this. As I perceive it, your biggest task however will be to come up with a correct FDT for Linux. This is out of scope of this ML and better carried to the linuxppc ML. Cheers Detlev -- Q: What does FAQ stand for? A: We are Frequently Asked this Question, and we have no idea. -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: d...@denx.de _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
