Belgacom Box 2 (Bbox2): compile a first kernel
Availability of the kernel sources
The website Livebox Opensource has released the sources of the kernel for the version 2.6.15. Note that there are 2 tar.bz2 files available, one for the platform vFAST3XXX_6813E2 and the other for the vFAST3XXX_6813E4.
I have requested Belgacom to provide the sources of the Linux kernel and uboot, without any answer so far.
Download the kernel sources
First download the sources of linux-2.6.15.tar.bz2:
$ wget -c http://www.livebox-opensource.com/Products/LiveBox/LiveBox2/vFAST3XXX_6813E4/linux-2.6.15.tar.bz2
--2010-10-24 16:01:31-- http://www.livebox-opensource.com/Products/LiveBox/LiveBox2/vFAST3XXX_6813E4/linux-2.6.15.tar.bz2
Resolving www.livebox-opensource.com... 161.106.104.24, 161.106.104.127
Connecting to www.livebox-opensource.com|161.106.104.24|:80... connected.
HTTP request sent, awaiting response... 206 Partial Content
Length: 33038873 (32M), 14452378 (14M) remaining [application/x-bzip2]
Saving to: `linux-2.6.15.tar.bz2'
100%[=====================================================>] 33,038,873 401K/s in 30s
2010-10-24 16:02:02 (466 KB/s) - `linux-2.6.15.tar.bz2' saved [33038873/33038873]
Check that the md5sum is equal to "071169d6fc193d6227da60c6fde84937":
$ md5sum linux-2.6.15.tar.bz2
071169d6fc193d6227da60c6fde84937 linux-2.6.15.tar.bz2
Decompress the archive:
$ tar -xvjf linux-2.6.15.tar.bz2
tar: Record size = 8 blocks
linux-2.6.15/
linux-2.6.15/fs/
linux-2.6.15/fs/affs/
linux-2.6.15/fs/affs/Changes
linux-2.6.15/fs/affs/namei.c
linux-2.6.15/fs/affs/affs.h
linux-2.6.15/fs/affs/dir.c
linux-2.6.15/fs/affs/Makefile
linux-2.6.15/fs/affs/amigaffs.c
linux-2.6.15/fs/affs/inode.c
[...]
Download the binary toolchain
You can download a prebuilt toolchain for Intel x86 32-bits processors:
$ wget -c http://www.livebox-opensource.com/Products/LiveBox/LiveBox2/vFAST3XXX_6813E4/toolchain-mips-linux-uclibc-prebuilt.tar.bz2
--2010-10-24 16:07:49-- http://www.livebox-opensource.com/Products/LiveBox/LiveBox2/vFAST3XXX_6813E4/toolchain-mips-linux-uclibc-prebuilt.tar.bz2
Resolving www.livebox-opensource.com... 161.106.104.127, 161.106.104.24
Connecting to www.livebox-opensource.com|161.106.104.127|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 24393650 (23M) [application/x-bzip2]
Saving to: `toolchain-mips-linux-uclibc-prebuilt.tar.bz2'
100%[===========================================================>] 24,393,650 508K/s in 51s
2010-10-24 16:08:40 (469 KB/s) - `toolchain-mips-linux-uclibc-prebuilt.tar.bz2' saved [24393650/24393650]
And verify that the md5dum matches "8a62f9e4451c20f905cf69383c025c92":
$ md5sum toolchain-mips-linux-uclibc-prebuilt.tar.bz2
8a62f9e4451c20f905cf69383c025c92 toolchain-mips-linux-uclibc-prebuilt.tar.bz2
Decompress the archive:
$ tar -xvjf toolchain-mips-linux-uclibc-prebuilt.tar.bz2
tar: Record size = 8 blocks
mips-linux-uclibc/
mips-linux-uclibc/mips-linux-uclibc/
mips-linux-uclibc/mips-linux-uclibc/sys-include
mips-linux-uclibc/mips-linux-uclibc/bin/
mips-linux-uclibc/mips-linux-uclibc/bin/g++
mips-linux-uclibc/mips-linux-uclibc/bin/as
mips-linux-uclibc/mips-linux-uclibc/bin/ld
mips-linux-uclibc/mips-linux-uclibc/bin/ranlib
mips-linux-uclibc/mips-linux-uclibc/bin/c++
mips-linux-uclibc/mips-linux-uclibc/bin/gcc
mips-linux-uclibc/mips-linux-uclibc/bin/strip
mips-linux-uclibc/mips-linux-uclibc/bin/ar
[...]
Or build the toolchain yourself from sources
The sources of the toolchain are also available here. You can compile the toolchain yourself, for example if you are using a 64bits system.
Change your PATH environment variable
You need to change your PATH variable in order to have the toolchain compilers in your available binaries:
$ pwd
/home/zoobab/soft/bbox2/soft
$ ls
linux-2.6.15 linux-2.6.15.tar.bz2 mips-linux-uclibc toolchain-mips-linux-uclibc-prebuilt.tar.bz2
$ export PATH="$PATH:$PWD/mips-linux-uclibc/bin"
If your PATH is correct, you should be able to use mips-linux-gcc:
$ mips-linux-gcc -v
Reading specs from /home/zoobab/soft/bbox2/soft/mips-linux-uclibc/bin/../lib/gcc/mips-linux-uclibc/3.4.3/specs
Configured with: /home/floss/FLOSS/orange-floss/Products/LiveBox/LiveBox2/Sagem/FAST3XXX_6813E2/.tmp.13602/toolchain-mips-linux-uclibc/toolchain_build_mips_nofpu/gcc-3.4.3/configure --prefix=/home/floss/FLOSS/orange-floss/Products/LiveBox/LiveBox2/Sagem/FAST3XXX_6813E2/.tmp.13602/toolchain-mips-linux-uclibc/build_mips_nofpu/staging_dir --build=i386-pc-linux-gnu --host=i386-pc-linux-gnu --target=mips-linux-uclibc --enable-languages=c,c++ --enable-shared --disable-__cxa_atexit --enable-target-optspace --with-gnu-ld --disable-nls --enable-multilib --with-float=soft --with-arch=lx4189
Thread model: posix
gcc version 3.4.3
Compile the kernel
Go to the kernel directory and launch the compilation with "make CROSS_COMPILE=mips-linux-":
$ cd linux-2.6.15
linux-2.6.15$ make CROSS_COMPILE=mips-linux-
It will then starts to compile the kernel:
$ make CROSS_COMPILE=mips-linux-
if test ! /home/zoobab/soft/bbox2/soft/linux-2.6.15 -ef /home/zoobab/soft/bbox2/soft/linux-2.6.15; then \
/bin/bash /home/zoobab/soft/bbox2/soft/linux-2.6.15/scripts/mkmakefile \
/home/zoobab/soft/bbox2/soft/linux-2.6.15 /home/zoobab/soft/bbox2/soft/linux-2.6.15 2 6 \
> /home/zoobab/soft/bbox2/soft/linux-2.6.15/Makefile; \
echo ' GEN /home/zoobab/soft/bbox2/soft/linux-2.6.15/Makefile'; \
fi
set -e; echo ' CHK include/linux/version.h'; mkdir -p include/linux/; if [ `echo -n "2.6.15" | wc -c ` -gt 64 ]; then echo '"2.6.15" exceeds 64 characters' >&2; exit 1; fi; (echo \#define UTS_RELEASE \"2.6.15\"; echo \#define LINUX_VERSION_CODE `expr 2 \\* 65536 + 6 \\* 256 + 15`; echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))'; ) < /home/zoobab/soft/bbox2/soft/linux-2.6.15/Makefile > include/linux/version.h.tmp; if [ -r include/linux/version.h ] && cmp -s include/linux/version.h include/linux/version.h.tmp; then rm -f include/linux/version.h.tmp; else echo ' UPD include/linux/version.h'; mv -f include/linux/version.h.tmp include/linux/version.h; fi
CHK include/linux/version.h
make -f scripts/Makefile.build obj=scripts/basic
make[1]: Entering directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
make[1]: Leaving directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
rm -rf .tmp_versions
mkdir -p .tmp_versions
make -f scripts/Makefile.build obj=.
make[1]: Entering directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
mkdir -p arch/mips/kernel/
make[1]: Leaving directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
make -f scripts/Makefile.build obj=scripts
make[1]: Entering directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
make -f scripts/Makefile.build obj=scripts/mod
make[2]: Entering directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
gcc -DCONFIG_HAS_MMU -Wp,-MD,scripts/mod/.modpost.o.d -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -c -o scripts/mod/modpost.o scripts/mod/modpost.c
gcc -DCONFIG_HAS_MMU -Wp,-MD,scripts/mod/.sumversion.o.d -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -c -o scripts/mod/sumversion.o scripts/mod/sumversion.c
gcc -DCONFIG_HAS_MMU -o scripts/mod/modpost scripts/mod/modpost.o scripts/mod/file2alias.o scripts/mod/sumversion.o
make[2]: Leaving directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
gcc -DCONFIG_HAS_MMU -Wp,-MD,scripts/.kallsyms.d -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -o scripts/kallsyms scripts/kallsyms.c
scripts/kallsyms.c: In function ‘read_symbol’:
scripts/kallsyms.c:83: warning: ignoring return value of ‘fgets’, declared with attribute warn_unused_result
gcc -DCONFIG_HAS_MMU -Wp,-MD,scripts/.bin2c.d -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -o scripts/bin2c scripts/bin2c.c
make[1]: Leaving directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
make -f scripts/Makefile.build obj=init
make[1]: Entering directory `/home/zoobab/soft/bbox2/soft/linux-2.6.15'
mips-linux-uclibc-gcc -Wp,-MD,init/.main.o.d -nostdinc -isystem /home/zoobab/soft/bbox2/soft/mips-linux-uclibc/bin/../lib/gcc/mips-linux-uclibc/3.4.3/include -D__KERNEL__ -Iinclude -include include/linux/autoconf.h -I../../pkg/include -I/home/zoobab/soft/bbox2/soft/linux-2.6.15/../../pkg/include -D__TARGET__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -ffreestanding -Os -fomit-frame-pointer -g -I /home/zoobab/soft/bbox2/soft/linux-2.6.15/include/asm/gcc -G 0 -mno-abicalls -fno-pic -pipe -mabi=32 -march=lx4189 -Wa,-32 -Wa,-march=lx4189 -Wa,-mips1 -Iinclude/asm-mips/mach-adi_fusiv -Iinclude/asm-mips/mach-generic -Wdeclaration-after-statement -DKBUILD_BASENAME=main -DKBUILD_MODNAME=main -c -o init/main.o init/main.c
init/main.c: In function `init':
init/main.c:775: warning: implicit declaration of function `rg_load_kernel_modules_initial'
init/main.c:776: warning: implicit declaration of function `rg_load_kernel_modules'
CHK include/linux/compile.h
/bin/bash /home/zoobab/soft/bbox2/soft/linux-2.6.15/scripts/mkcompile_h include/linux/compile.h \
"mips" "" "" "mips-linux-uclibc-gcc -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -ffreestanding -Os -fomit-frame-pointer -g -I /home/zoobab/soft/bbox2/soft/linux-2.6.15/include/asm/gcc -G 0 -mno-abicalls -fno-pic -pipe -mabi=32 -march=lx4189 -Wa,-32 -Wa,-march=lx4189 -Wa,-mips1 -Iinclude/asm-mips/mach-adi_fusiv -Iinclude/asm-mips/mach-generic -Wdeclaration-after-statement "
UPD include/linux/compile.h
[...]
The full log output is here.
And the end of the process, you should have a kernel of 24MB:
$ ls -lha vmlinux
-rwxr-xr-x 1 zoobab zoobab 24M 2010-10-24 16:50 vmlinux
Dotconfig
The .config file given with the tar.bz2 archive seems really modified compared to the vanilla kernel 2.6.15:
ARCH=mips
AR=mips-linux-uclibc-ar
AS=mips-linux-uclibc-as
BOARD=F@ST 3202
CC=mips-linux-uclibc-gcc
CONFIG_OPENRG=y
CONFIG_RG_KOS_FEATURE=y
CONFIG_RG_IGMP_PROXY=y
CONFIG_32BIT=y
CONFIG_ARCH_AD6834_FAST3202=y
CONFIG_ATM_BR2684=y
CONFIG_ATM_CLIP=m
CONFIG_ATM=y
CONFIG_BASE_SMALL=0
CONFIG_BINFMT_ELF=y
CONFIG_BLK_DEV_SD=y
CONFIG_BOOT_ELF32=y
CONFIG_BT_BNEP_MC_FILTER=y
CONFIG_BT_BNEP_PROTO_FILTER=y
CONFIG_BT_BNEP=y
CONFIG_BT_L2CAP=y
CONFIG_BT_RFCOMM=y
CONFIG_BT_SCO=y
CONFIG_BT=y
CONFIG_BUG=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_CMDLINE=console=ttyS0,57600 quiet
CONFIG_CPU_BIG_ENDIAN=y
CONFIG_CPU_LX4189=y
CONFIG_CRAMFS_DYN_BLOCKSIZE=y
CONFIG_CRAMFS=y
CONFIG_CRC32=y
CONFIG_CROSSCOMPILE=y
CONFIG_CRYPTO_AES=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO=y
CONFIG_DEBUG_INFO=y
CONFIG_DEFAULT_IOSCHED="anticipatory"
CONFIG_DMA_NONCOHERENT=y
CONFIG_ETH_SWITCH=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
CONFIG_FAT_FS=y
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_FORCE_RECOVERY=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_HOTPLUG=y
CONFIG_HW_BLUETOOTH=y
CONFIG_IKCONFIG_PROC=y
CONFIG_IKCONFIG=y
CONFIG_INET_AH=y
CONFIG_INET=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_INITRAMFS_ROOT_GID=$(shell id -g)
CONFIG_INITRAMFS_ROOT_UID=$(shell id -u)
CONFIG_INITRAMFS_SOURCE=$(RAMDISK_MOUNT_POINT)
CONFIG_INOTIFY=y
CONFIG_IOSCHED_NOOP=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_FIB_HASH=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_FWMARK=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_JBD=y
CONFIG_JFFS2_FS=y
CONFIG_KALLSYMS=y
CONFIG_KMOD=y
CONFIG_LEGACY_PTY_COUNT=256
CONFIG_LEGACY_PTYS=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_MACH_ADI_FUSIV=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_MIPS_L1_CACHE_SHIFT=5
CONFIG_MIPS_PATENTFREE=y
CONFIG_MIPS=y
CONFIG_MMU=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MSDOS_FS=y
CONFIG_MSDOS_PARTITION=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_CFI_I1=y
CONFIG_MTD_CFI_I2=y
CONFIG_MTD_CFI_UTIL=y
CONFIG_MTD_CFI=y
CONFIG_MTD_GEN_PROBE=y
CONFIG_MTD_MAP_BANK_WIDTH_1=y
CONFIG_MTD_MAP_BANK_WIDTH_2=y
CONFIG_MTD_MAP_BANK_WIDTH_4=y
CONFIG_MTD_PARTITIONS=y
CONFIG_MTD=y
CONFIG_NET_CLS_FW=y
CONFIG_NET_CLS_POLICE=y
CONFIG_NET_CLS_RSVP6=y
CONFIG_NET_CLS_RSVP=y
CONFIG_NET_CLS_TCINDEX=y
CONFIG_NET_CLS_U32=y
CONFIG_NET_CLS=y
CONFIG_NETDEVICES=y
CONFIG_NET_ESTIMATOR=y
CONFIG_NET_ETHERNET=y
CONFIG_NETFILTER=y
CONFIG_NET_RADIO=y
CONFIG_NET_SCH_ATM=y
CONFIG_NET_SCH_CLK_JIFFIES=y
CONFIG_NET_SCH_DSMARK=y
CONFIG_NET_SCHED=y
CONFIG_NET_SCH_HTB=y
CONFIG_NET_SCH_INGRESS=y
CONFIG_NET_SCH_PRIO=y
CONFIG_NET_SCH_RED=y
CONFIG_NET_SCH_SFQ=y
CONFIG_NET_SCH_TBF=y
CONFIG_NET_WIRELESS=y
CONFIG_NET=y
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_DEFAULT="437"
CONFIG_NLS_ISO8859_1=y
CONFIG_NLS_UTF8=y
CONFIG_NLS=y
CONFIG_NTFS_FS=y
CONFIG_OBSOLETE_MODPARM=y
CONFIG_OPENRG=y
CONFIG_PACKET=y
CONFIG_PAGE_SIZE_4KB=y
CONFIG_PCI=y
CONFIG_PRINTK=y
CONFIG_PROC_FS=y
CONFIG_RAMFS=y
CONFIG_RG_BLUETOOTH=y
CONFIG_RG_INITFS_RAMFS=y
CONFIG_RG_MAINFS=y
CONFIG_RG_MAINFS_CRAMFS=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_SAGEM_FTTHV2=y
CONFIG_SAGEM_GENERIC_CARD_SUPPORT=y
CONFIG_SAGEM_LBV2ULT=y
CONFIG_SAGEM_USB_HOST=y
CONFIG_SCSI=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_SERIAL_CORE=y
CONFIG_SOFTIRQ_THROTTLE=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_SYN_COOKIES=y
CONFIG_SYSCTL=y
CONFIG_SYSFS=y
CONFIG_SYSVIPC=y
CONFIG_TINY_SHMEM=y
CONFIG_TOS_DSCP_RFC2474=y
CONFIG_TRAD_SIGNALS=y
CONFIG_UNIX=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_DEVICEFS=y
CONFIG_USB_EHCI_HCD=m
CONFIG_USB_OHCI_HCD=m
CONFIG_USB_PRINTER=y
CONFIG_USB_SERIAL_CP2101=m
CONFIG_USB_SERIAL=m
CONFIG_USB_STORAGE=y
CONFIG_USB=y
CONFIG_VFAT_FS=y
CONFIG_VLAN_8021Q=y
CONFIG_XFRM=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_ZLIB_INFLATE=y
CROSS_COMPILE=mips-linux-uclibc-
GCC_VERSION=3.4.3
HOSTCC=gcc -DCONFIG_HAS_MMU
LD=mips-linux-uclibc-ld
NM=mips-linux-uclibc-nm
NUM_PHYS=2
OBJCOPY=mips-linux-uclibc-objcopy
OBJDUMP=mips-linux-uclibc-objdump
RANLIB=mips-linux-uclibc-ranlib
SIZE=mips-linux-uclibc-size
STRIP=mips-linux-uclibc-strip
Todo
- Make a diff between the released kernels and the vanilla kernels of kernel.org
- Compile the toolchains
- Find a way to reduce the kernel size (remove symbols, etc…)
- Try to just compile a simple kernel module and load it on the bbox2
Great! You have found kernel sources! So if loading this first kernel in bbox2 woks, what is next step? I remember that sources of vdsl chip for example are not available so with this kernel what possibilities have we? What do we need except kernel sources in order to have a complete free firmware for bbox2 and so use all functions hidden by nasty BGC!
Ciao Benjamin,
very useful information! I remember when you bring your modem at battlemesh the last year.
I found a similar device also here in italy distributed by telecom italia as model name agif, this modem was distributed by the first ISP in italy so it is wide available.
your kernel is based on 2.6.15 and CONFIG_ARCH_AD6834_FAST3202 is very attractive, unfortunately nothing similar is upstream so we can only rely on diffs.
Can you post a diff from released kernels and the vanilla kernels?
To reduce the kernel size, you just have to do
mips-linux-uclibc-objcopy -O binary vmlinux vmlinuz
from the kernel build dir: 23,1 MB -> 2,9 MB
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