I have done additional test with my u-boot and linux kernel. I have downloaded u-boot(.elf) and zImage.elf via jtag to SDRAM:
The SDRAM has 32 MB: Address Map for Processor ppc405_0 (0x00000000-0x01ffffff) DDR_SDRAM_1 plb The steps I have doe are as following: 1. XMD% dow -data zImage.elf 0xe00000 2. XMD% dow u-boot.elf section, .text: 0x00800000-0x0081513c section, .resetvec: 0x0081513c-0x00815140 section, .rodata: 0x00815140-0x00817ce0 section, .reloc: 0x00817d00-0x00818674 section, .data: 0x00818674-0x00818b08 section, .data.rel: 0x00818b08-0x00818b34 section, .data.rel.local: 0x00818b34-0x00818f6c section, .u_boot_cmd: 0x00818f6c-0x008191dc section, .bss: 0x00819200-0x0081dd04 Downloaded Program u-boot.elf Setting PC with program start addr = 0x00800100 PC reset to 0x00800100, Clearing MSR Register 3. XMD% run ------------------------------------------------------------------ output on the serial port ------------------------------------------------------------------ U-Boot 1.2.0 (Aug 28 2007 - 11:56:19) U-Boot: checkboard DRAM: U-Boot: initdram 32 MB Using default environment In: serial Out: serial Err: serial Hit any key to stop autoboot: 0 => U-Boot 1.2.0 (Aug 27 2007 - 14:23:15) U-Boot: checkboard DRAM: U-Boot: initdram 32 MB Using default environment In: serial Out: serial Err: serial Hit any key to stop autoboot: 0 => bootelf 0xe00000 Loading .text @ 0x00400000 (14028 bytes) Loading .data @ 0x00404000 (995328 bytes) Clearing .bss @ 0x004f7000 (8504 bytes) ## Starting application at 0x00400000 ... loaded at: 00400000 004F9138 board data at: 004F7120 004F7138 relocated to: 004040B4 004040CC zimage at: 00404E59 004F6EE8 avail ram: 004FA000 01FFFFFF Linux/PPC load: console=ttyUL0,9600 root=/dev/nfs rw nfsroot=129.117.144.113:/opt/eldk41/ppc_4xx,tcp ip=::::virtex4-mirek:eth0:dhcp panic=1 Uncompressing Linux... After that system just hangs. I do not understand why it is possible to run zImage.elf straight from jtag but it hangs when started from u-boot. Is it any fundamental problem with running Linux from u-boot on ML403 (Virtex-4) boards? Best Regards Mirek _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded