[coreboot] Problems with the gdb debugger and coreboot

René Reuter reuter.rene at googlemail.com
Sat May 30 14:20:14 CEST 2009


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 <stepan at coresystems.de>

>
> 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 <stepan at coresystems.de>
>
>>  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 <c-d.hailfinger.devel.2006 at gmx.net>
>>
>>> 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
>>>
>>> --
>>> http://www.hailfinger.org/
>>>
>>>
>>
>>
>>  --
>> coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br.
>>       Tel.: +49 761 7668825 • Fax: +49 761 7664613
>> Email: info at coresystems.dehttp://www.coresystems.de/
>> Registergericht: Amtsgericht Freiburg • HRB 7656
>> Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866
>>
>>
>>
>
>
> --
> coresystems GmbH • Brahmsstr. 16 • D-79104 Freiburg i. Br.
>       Tel.: +49 761 7668825 • Fax: +49 761 7664613
> Email: info at coresystems.dehttp://www.coresystems.de/
> Registergericht: Amtsgericht Freiburg • HRB 7656
> Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866
>
>
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