Hello Weqaar, I am still not able to load the ELF image on my board that run redboot. I am trying to load image that is combined bzImage + ramdisk produced by wraplinux script. (http://www.kernel.org/pub/linux/utils/boot/wraplinux/)
I have included output of readelf -h and 50 lines of system.map readelf -h vmlinux.initrd.wrap ELF Header: Magic: 7f 45 4c 46 01 01 01 ff 00 00 00 00 00 00 00 00 Class: ELF32 Data: 2's complement, little endian Version: 1 (current) OS/ABI: Standalone App ABI Version: 0 Type: EXEC (Executable file) Machine: Intel 80386 Version: 0x1 Entry point address: 0x12a18 Start of program headers: 52 (bytes into file) Start of section headers: 5309992 (bytes into file) Flags: 0x0 Size of this header: 52 (bytes) Size of program headers: 32 (bytes) Number of program headers: 3 Size of section headers: 40 (bytes) Number of section headers: 8 Section header string table index: 7 00000400 A __kernel_vsyscall 00000410 A SYSENTER_RETURN 00000420 A __kernel_sigreturn 00000440 A __kernel_rt_sigreturn 00100000 A phys_startup_32 c0100000 T _text c0100000 T startup_32 c01000b0 T _stext c01000b0 t run_init_process c01000b0 T stext c01000c4 t init_post c01001b0 t try_name c010037b T name_to_dev_t c01005f0 T calibrate_delay c01008a0 T thread_saved_pc c01008aa T disable_hlt c01008b2 T enable_hlt c01008ba t poll_idle c01008bd T dump_task_regs c01009a8 T select_idle_routine c01009e3 T arch_align_stack c0100a18 T mwait_idle_with_hints c0100a52 t mwait_idle c0100a5c T sys_vfork c0100a8c T sys_clone c0100ac7 T sys_fork c0100af7 T release_thread c0100b0a T kernel_thread c0100b9c T cpu_idle c0100c05 T dump_thread c0100d22 T sys_execve c0100da2 T get_wchan c0100e22 T sys_set_thread_area c0100fb6 T sys_get_thread_area c01010de T show_regs c01012a1 T default_idle c01012da T copy_thread c01014b3 t __switch_to_xtra c0101518 T __switch_to c0101640 T cpu_idle_wait c01016b2 T exit_thread c010175f T flush_thread c01017d8 T prepare_to_copy c0101840 t setup_sigcontext c01019c9 T sys_sigaltstack c01019db t restore_sigcontext c0101bb5 T sys_sigaction c0101c8a T sys_rt_sigreturn c0101d62 T do_notify_resume c0102428 T sys_sigsuspend On Sun, Jul 26, 2009 at 9:33 AM, Weqaar Janjua<weq...@yahoo.com> wrote: > Please post the first 50 lines of System.map and output from 'readelf -h > vmlinux' > > - Weqaar A. Janjua > > > > ----- Original Message ---- > From: Subodh Nijsure <nijsure.sub...@gmail.com> > To: Gary Thomas <g...@mlbassoc.com> > Cc: ecos-de...@sourceware.org > Sent: Friday, July 24, 2009 5:30:34 PM > Subject: Re: Booting ELF image using redboot > > See my attempts below (still no joy, I am stumped appreciate help!) > > On Fri, Jul 24, 2009 at 8:15 AM, Gary Thomas<g...@mlbassoc.com> wrote: >> Subodh Nijsure wrote: >>> I am new to using redboot and I need some help. >>> >>> This is x86 platform. >>> >>> On this platform I can boot the bzImage but not the ELF format linux image. >>> >>> Example if I have following boot script my board boots fine. >>> >>> load -v -r -m disk -b 0x200000 hda2:bzImage >>> exec -b 0x200000 -l 0x300000 -c "console=ttyS0,115200 ip=dhcp >>> root=/dev/nfs (some env specific stuff) " >>> >>> However I can not get redboot to load the ELF image I see message ( >>> Bootsector magic not found (0x8954 @ 0x002001fe) >>> >>> (Not this vmlinux was produced by build process that created bzImage >>> that works) >>> >>> load -v -r -m disk -b 0x200000 hda2:vmlinux >>> exec -b 0x200000 -l 0x300000 -c "console=ttyS0,115200 ip=dhcp >>> root=/dev/nfs (some env specific stuff) " >>> Bootsector magic not found (0x8954 @ 0x002001fe) >>> >>> Reason I am trying to boot ELF image is I am trying to use wraplinux >>> utility to wrap kernel and initrd, wraplinux produce >>> >>> Would appreciate any pointers as to what parameters I need to fix for >>> load/exec when loading ELF file. >> >> Try leaving out the '-r' and '-b' options - ELF loading >> should not need them. > > So I tried doing the following > > load -v -m disk hda2:vmlinux > exec -c "console=ttyS0,115200 root=/dev/sda2 ip=dhcp platformid=0x500300" > > I also tried to execute exec with that specified -l > > load -v -m disk hda2:vmlinux > exec -l 0x500000 -c "console=ttyS0,115200 root=/dev/sda2 ip=dhcp > platformid=0x500300" > > without any luck objdump for vmlinux shows the following: so I have > also tried executing > go 0x00100000 without any luck > > > vmlinux: file format elf32-i386 > vmlinux > architecture: i386, flags 0x00000112: > EXEC_P, HAS_SYMS, D_PAGED > start address 0x00100000 > > Program Header: > LOAD off 0x00001000 vaddr 0xc0100000 paddr 0x00100000 align 2**12 > filesz 0x0036032c memsz 0x0036032c flags r-x > LOAD off 0x00362000 vaddr 0xc0461000 paddr 0x00461000 align 2**12 > filesz 0x0007a086 memsz 0x000bc000 flags rwx > NOTE off 0x002b4cd8 vaddr 0xc03b3cd8 paddr 0x003b3cd8 align 2**2 > filesz 0x00000024 memsz 0x00000024 flags --- > > > > > /Subodh > > > > > >
