Re: [coreboot] Problems with the gdb debugger and coreboot

[René Reuter]

OK now it should work, but I'm getting this now in gdb when I'm trying to
load the file:

(gdb) file
/home/sphinx/coreboot/coreboot-v2/targets/emulation/qemu-x86/qemu-x86/coreboot.rom
"/home/sphinx/coreboot/coreboot-v2/targets/emulation/qemu-x86/qemu-x86/coreboot.rom":
not in executable format: File format not recognized

René

2009/5/29 Stefan Reinauer
> Argh! My fault... It belongs into Options.lb, not Config.lb. I corrected
> the Wiki page.
>
> On 29.05.2009 20:08 Uhr, René Reuter wrote:
>
> There are no other "uses" statements in that config file. I'm using
> coreboot-v2 if that helps. I'm posting the first lines of my config file:
>
> debian:/home/sphinx/coreboot/coreboot-v2# vim
> src/mainboard/emulation/qemu-x86/Config.lb
>
> ##
> ## Compute the location and size of where this firmware image
> ## (coreboot plus bootloader) will live in the boot rom chip.
> ##
> default ROM_SIZE = 2048 * 1024
> default ROM_SECTION_SIZE   = ROM_SIZE
> default ROM_SECTION_OFFSET = 0
>
> uses CONFIG_GDB_STUB
> default CONFIG_GDB_STUB=1
>
> ##
> ## Compute the start location and size size of
> ## The coreboot bootloader.
> ##
> default PAYLOAD_SIZE            = ( ROM_SECTION_SIZE - ROM_IMAGE_SIZE )
> default CONFIG_ROM_PAYLOAD_START = (0xffffffff - ROM_SIZE +
> ROM_SECTION_OFFSET + 1)
>
> René
>
> 2009/5/29 Stefan Reinauer
> > You need to put the "uses" in the top half of the file (to the other uses
> > statements) and the "default" into the lower half (where the other default
> > statements are)
> >
> > On 29.05.2009 19:05 Uhr, René Reuter wrote:
> >
> > Here is the build fail when I put the strings into the mainboard
> > config.lb (src/mainboard/emulation/qemu-x86)
> >
> > Configuring DIR /boot/Config.lb
> > add object src/boot/elfboot.o source $(TOP)//src/boot/elfboot.c
> > add object src/boot/hardwaremain.o source $(TOP)//src/boot/hardwaremain.c
> > partobj dir
> > /home/sphinx/coreboot/coreboot-v2/src/mainboard/emulation/qemu-x86 parent 0
> > part mainboard
> > INSTANCE 0
> > curpart.uses_options is {'ROM_IMAGE_SIZE': <__main__.option instance at
> > 0xb787ec6c>, 'CROSS_COMPILE': <__main__.option instance at 0xb7850fcc>,
> > 'MAINBOARD': <__main__.option instance at 0xb7ba528c>, '_ROMBASE':
> > <__main__.option instance at 0xb788244c>, 'ROM_SECTION_SIZE':
> > <__main__.option instance at 0xb787ee6c>, 'ROM_SIZE': <__main__.option
> > instance at 0xb787ea8c>, 'USE_OPTION_TABLE': <__main__.option instance at
> > 0xb7b98c2c>, 'CONFIG_PCI_OPTION_ROM_RUN_VM86': <__main__.option instance at
> > 0xb7bcc64c>, 'HAVE_MP_TABLE': <__main__.option instance at 0xb7baa62c>,
> > 'HAVE_HARD_RESET': <__main__.option instance at 0xb7bb9aac>, 'ARCH':
> > <__main__.option instance at 0xb7850c4c>, 'CONFIG_CONSOLE_SERIAL8250':
> > <__main__.option instance at 0xb7b9ef6c>, 'ROM_SECTION_OFFSET':
> > <__main__.option instance at 0xb788206c>, 'XIP_ROM_BASE': <__main__.option
> > instance at 0xb7b981cc>, 'MAINBOARD_PART_NUMBER': <__main__.option instance
> > at 0xb7ba53ec>, 'FALLBACK_SIZE': <__main__.option instance at 0xb787e68c>,
> > 'MAINBOARD_VENDOR': <__main__.option instance at 0xb7ba55cc>,
> > 'CONFIG_PCI_ROM_RUN': <__main__.option instance at 0xb7bcc04c>,
> > 'CONFIG_PRECOMPRESSED_PAYLOAD': <__main__.option instance at 0xb7bae5ec>,
> > 'PAYLOAD_SIZE': <__main__.option instance at 0xb788224c>, 'CONFIG_COMPRESS':
> > <__main__.option instance at 0xb7b9858c>, 'USE_FALLBACK_IMAGE':
> > <__main__.option instance at 0xb787e2cc>, 'HOSTCC': <__main__.option
> > instance at 0xb78762ec>, 'CC': <__main__.option instance at 0xb787616c>,
> > 'MAXIMUM_CONSOLE_LOGLEVEL': <__main__.option instance at 0xb7ba13ac>,
> > 'XIP_ROM_SIZE': <__main__.option instance at 0xb7b983ac>, 'HAVE_PIRQ_TABLE':
> > <__main__.option instance at 0xb7bb2b2c>, 'HEAP_SIZE': <__main__.option
> > instance at 0xb7882e2c>, 'HAVE_FALLBACK_BOOT': <__main__.option instance at
> > 0xb787beec>, 'IRQ_SLOT_COUNT': <__main__.option instance at 0xb7bb2dec>,
> > 'STACK_SIZE': <__main__.option instance at 0xb7882bec>,
> > 'CONFIG_ROM_PAYLOAD_START': <__main__.option instance at 0xb7bae14c>,
> > 'DEFAULT_CONSOLE_LOGLEVEL': <__main__.option instance at 0xb7ba124c>,
> > 'USE_DCACHE_RAM': <__main__.option instance at 0xb7b9346c>,
> > 'COREBOOT_EXTRA_VERSION': <__main__.option instance at 0xb78769ac>,
> > 'CONFIG_COMPRESSED_PAYLOAD_LZMA': <__main__.option instance at 0xb7bae48c>,
> > 'CONFIG_CBFS': <__main__.option instance at 0xb7baee2c>,
> > 'CONFIG_COMPRESSED_PAYLOAD_NRV2B': <__main__.option instance at 0xb7bae32c>,
> > '_RAMBASE': <__main__.option instance at 0xb7b930ac>, 'CONFIG_ROM_PAYLOAD':
> > <__main__.option instance at 0xb7baafcc>, 'OBJCOPY': <__main__.option
> > instance at 0xb787662c>, 'HAVE_OPTION_TABLE': <__main__.option instance at
> > 0xb7b98acc>}
> >
> > ===> ERROR: Option uses undefined (missing use command?)
> > emulation/qemu-x86/Config.lb:0
> > mainboard/emulation/qemu-x86/Config.lb:0
> >
> > And here are the CFLAGS in src/config/Config.lb
> >
> > makedefine CPPFLAGS := -I$(TOP)/src/include
> > -I$(TOP)/src/arch/$(ARCH)/include -I$(GCC_INC_DIR) $(CPUFLAGS)
> > makedefine CFLAGS := $(CPU_OPT) $(DISTRO_CFLAGS) $(CPPFLAGS) -Os -g
> > -nostdinc -nostdlib -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs
> > -Werror-implicit-function-declaration -Wstrict-aliasing -Wshadow -fno-common
> > -ffreestanding -fno-builtin -fomit-frame-pointer
> >
> > if ASSEMBLER_DEBUG
> > makedefine DEBUG_CFLAGS := -g -dA -fverbose-asm
> > end
> >
> > Hope that will help.
> >
> > Regards,
> >
> > René
> >
> > 2009/5/29 Carl-Daniel Hailfinger
> > > Hi René,
> > >
> > > On 28.05.2009 16:28, René Reuter wrote:
> > > > I'm trying to set up the gdb debugger with coreboot and qemu. I've
> > >
> > > followed
> > > > the instructions on that page: http://www.coreboot.org/Debugging
> > > >
> > > > If I put
> > > >
> > > > uses CONFIG_GDB_STUB
> > > > default CONFIG_GDB_STUB=1
> > > >
> > > > into the mainboards config.lb how it's written in the instructions the
> > > > ./buildtarget will fail.
> > >
> > > How does it fail? Please paste the last few lines of the log so we can
> > > investigate.
> > > > That's why I put it into src/config/Config.lb, then
> > > > the build is successful but gdb can't find any debugging symbols in the
> > > > coreboot.ram.
> > > >
> > > > The CFLAGS are all set correct.
> > > >
> > > > Does anybody know an idea what I'm doing wrong?
> > >
> > > With more info, we can probably figure it out.
> > >
> > > Regards,
> > > Carl-Daniel