On Tuesday 12 January 2010 08:02:51 anupbehare@gmail.com wrote:
I begin use U-Boot at my custom board based on ppc440x5.
What kind of PPC4xx ist this? PPC440EPx?
Here is Mem Info that we are using on board:
16MB Nor flash with base address 0xfc000000 512MB DDR with base addr 0x00000000 256kb ISRAM with base addr 0xc0000000
TEXT_BASE 0xfffc0000
Tlb entries for board is: tlbentry( 0xff000000, SZ_16M, 0xff000000, 0, AC_R|AC_X|AC_W) ------Flash tlbentry( 0xc0000000, SZ_256K, 0xc0000000, 0, AC_R|AC_W|AC_X|SA_I) ------ISRAM tlbentry( 0x00000000, SZ_256M, 0x00000000, 0, AC_R|AC_W|AC_X|SA_I|SA_G) ------DDR tlbentry( 0x10000000, SZ_256M, 0x10000000, 0, AC_R|AC_W|AC_X|SA_I|SA_G) ------DDR
I am trying to get a clean build of U-Boot to run on the PPC440x5 based customized board. I have the latest versions U-Boot. The system executes through board_init_f( ) without any problems, and gets into board_init_r( ). The console output is as follows:
512 MB (ECC is ON, 400 MHz, CL 7) Top of RAM usable for U-Boot at: 20000000 Reserving 170k for U-Boot at: 1ffd5000 Reserving 1040k for malloc() at: 1fed1000 Reserving 128 Bytes for Board Info at: 1fed0f80 Reserving 64 Bytes for Global Data at: 1fed0f40 Stack Pointer at: 1fed0f28 New Stack Pointer is: 1fed0f28 relocate addr_sp = 1fed0f28, id = 1fed0f40, addr = 1ffd5000
Now running in RAM - U-Boot at: 1ffd5000
NIP: 1FFD7764 XER: 00000000 LR: 1FFD7764 REGS: 1fed0e20 TRAP: 0200 DEAR: FFED0F18 MSR: 00021000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
GPR00: 1FFD7338 1FED0F10 1FED0F40 1FFD5000 1FFD88E0 00000000 00000000 1FFD7764 GPR08: 00000600 00002098 00000030 2FAF07FE FFFFFFFF C000B330 20002A00 20015000 GPR16: 00000000 00000000 00000000 00000000 48FF2422 00000610 00002C20 00000000 GPR24: 00000000 1FED0F40 1FFD5000 1FED5000 1FED0F80 1FFD5000 20002B10 1FED1000 Call backtrace: 1FFD88D8 1FFD76D8 00000000 machine check
When U-Boot crashes/hangs upon relocation to SDRAM, you most likely have a problem with your SDRAM configuration. Again, which CPU are you using? How is the SDRAM connected (DIMM or onboard). I suggest you check your SDRAM controller setup again.
Here I am trying to use backtrace to debug but system is waiting at folloing console o/p.
[root@u-boot]$ cp ../../11dec_rec/u-boot/backtrace . [root@u-boot]$backtrace System.map 0xdffeb000 Reading symbols from System.map Using Address Offset 0xdffeb000
This link might help:
http://www.denx.de/wiki/DULG/DebuggingUBoot
Especially chapter 10.1.2. Debugging of U-Boot After Relocation.
Cheers, Stefan
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