Problems with the gdb debugger and coreboot

[René Reuter]

Hi,

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. 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?

Regards,

René

[Joseph Smith]

On Thu, 28 May 2009 16:28:43 +0200, René Reuter
 wrote:
> Hi,
>
> 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. 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?

Hello,
This happens with me also (on IP1000), when you connect gdb via serial it
still is able to read the error but it isn't always able to do the
backtrace correctly.

[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

[René Reuter]

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

[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 http://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 <[e-mail]
> >
> 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 <http://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/

[René Reuter]

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

[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 <[e-mail]
> >
> 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 <http://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
> > <[e-mail]
> > <mailto:[e-mail]>>
> >
> >     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 <http://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.: [phone] • Fax: [phone]
> Email: [e-mail] <mailto:[e-mail]>  • http://www.coresystems.de/
> Registergericht: Amtsgericht Freiburg • HRB 7656
> Geschäftsführer: Stefan Reinauer • Ust-IdNr.: DE245674866

[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

[Stefan Reinauer]

On 30.05.2009 14:20 Uhr, René Reuter wrote:
> 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

you should use fallback/coreboot_ram, not coreboot.rom.

Stefan
> René

[René Reuter]

I've no fallback dir. The coreboot_ram is located at
./targets/emulation/qemu-x86/qemu-x86/normal/coreboot_ram

But gdb can't find any debugging symbols in it.

René

2009/5/30 Stefan Reinauer
> On 30.05.2009 14:20 Uhr, René Reuter wrote:
> > 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
>
> you should use fallback/coreboot_ram, not coreboot.rom.
>
> Stefan
> > René

[Stefan Reinauer]

On 30.05.2009 14:48 Uhr, René Reuter wrote:
> I've no fallback dir. The coreboot_ram is located at
> ./targets/emulation/qemu-x86/qemu-x86/normal/coreboot_ram
>
> But gdb can't find any debugging symbols in it.

Did you recompile with  the patch to src/config/Config.lb mentioned on
http://www.coreboot.org/Debugging

you need to add -O2 -g instead of -Os to CFLAGS