Hi,
I'm porting u-boot on my PPC405EP board. I started from bubinga405ep board, and I have sucessfully loaded a linux kernel and made it run well. Now I try to create another folder for my own board in ../board folder and named it as sgw405ep, I modified makefile and some other places which related to bubinga45ep. The new u-boot can start up and can also download linux kernel (same kernel) via tftp. but when I try to make the kernel run by typing bootm, I get the following message: => bootm ## Booting image at 00400000 ... Image Name: Linux Kernel Image Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 603024 Bytes = 588.9 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Current stack ends at 0x01FAD598 => set upper limit to 0x00800000 ## cmdline at 0x007FFC00 ... 0x007FFC50 bd address = 0x01FADF8C memstart = 0x00000000 memsize = 0x02000000 flashstart = 0x10000000 flashsize = 0x00200000 flashoffset = 0x00000000 sramstart = 0x00000000 sramsize = 0x00000000 bootflags = 0x0000A000 procfreq = 266.666 MHz plb_busfreq = 133.333 MHz pci_busfreq = 33.333 MHz ethaddr = 00:E5:00:08:0F:E5 IP addr = 128.127.18.3 baudrate = 115200 bps No initrd ## Transferring control to Linux (at address 00000000) ...
and then, the processor seems halt.
I compared the data in sdram from 0x00000000 to 0x00020000 after the kernel was uncompressed into SDRAM for the two u-boot, I found the some data are not same in section 0x00000000 to 0x00002000.
Two u-boot all reports that Uncompressing Kernel Image ... OK, but why the data not same? Who can tell me What's possible problems?
Thanks very much!
yuwp