* [Buildroot] Load Address and EntryPoint for Kernel
@ 2012-10-28 16:20 Carsten Schoenert
2012-10-28 16:43 ` Thomas Petazzoni
0 siblings, 1 reply; 5+ messages in thread
From: Carsten Schoenert @ 2012-10-28 16:20 UTC (permalink / raw)
To: buildroot
Hello,
I have successful created up my own config of buildroot to build a basic
filesystem for an ARM Target. Buildroot does everything without any
errors. To start with a low barrier I just selected support for U-Boot,
the kernel and a simple standard filesystem.
Now I have tried to start the builded kernel via U-Boot that's already
on the target. The tftpload works correct an I started the kernel.
> HDx> tftpboot 192.168.136.4:ubi/uImage
> TFTP from server 192.168.136.4; our IP address is 192.168.136.10
> Filename 'ubi/uImage'.
> Load address: 0xe000000
> Loading: #################################################################
> #################################################################
> #################################################################
> #################################################################
> #################################################################
> #################################################################
> #####################
> done
> T Bytes transferred = 2101868 (20126c hex)
> HDx> bootm 0xe000000
> ## Booting kernel from Legacy Image at 0e000000 ...
> Image Name: Linux-2.6.34.13-nevis
> Image Type: ARM Linux Kernel Image (uncompressed)
> Data Size: 2101804 Bytes = 2 MB
> Load Address: 00008000
> Entry Point: 00008000
> Verifying Checksum ... OK
> Loading Kernel Image ... OK
> OK
>
> Starting kernel ...
>
But more is not to see. The original kernel from the manufacture looks
like this.
> ## Booting kernel from Legacy Image at f0080000 ...
> Image Name: Coolstream HDx Kernel
> Image Type: ARM Linux Kernel Image (uncompressed)
> Data Size: 2116856 Bytes = 2 MB
> Load Address: 00048000
> Entry Point: 00048000
> Verifying Checksum ... OK
As I can see the Load Address and the Entry Point is a little bit, but
significant :) different.
I have search the point there I can change this while mkimage is called
to generate the uImage but haven't found the correct point for this.
Can someone give me a hint?
Thx
Carsten
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Buildroot] Load Address and EntryPoint for Kernel
2012-10-28 16:20 [Buildroot] Load Address and EntryPoint for Kernel Carsten Schoenert
@ 2012-10-28 16:43 ` Thomas Petazzoni
2012-10-28 17:16 ` Carsten Schoenert
0 siblings, 1 reply; 5+ messages in thread
From: Thomas Petazzoni @ 2012-10-28 16:43 UTC (permalink / raw)
To: buildroot
Dear Carsten Schoenert,
On Sun, 28 Oct 2012 17:20:37 +0100, Carsten Schoenert wrote:
> I have search the point there I can change this while mkimage is called
> to generate the uImage but haven't found the correct point for this.
>
> Can someone give me a hint?
Most likely your kernel configuration is wrong.
Please post your Buildroot .config and kernel .config file and more
details about what your hardware platform is.
Thanks,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Buildroot] Load Address and EntryPoint for Kernel
2012-10-28 16:43 ` Thomas Petazzoni
@ 2012-10-28 17:16 ` Carsten Schoenert
2012-10-28 20:21 ` Thomas Petazzoni
0 siblings, 1 reply; 5+ messages in thread
From: Carsten Schoenert @ 2012-10-28 17:16 UTC (permalink / raw)
To: buildroot
Hello Thomas,
Am 28.10.2012 17:43, schrieb Thomas Petazzoni:
> Most likely your kernel configuration is wrong.
Hopefully I have taken the complete one from the original ... :/
This complete git repo can be found here.
http://git.coolstreamtech.de/?p=cst-public-linux-kernel.git;a=shortlog;h=refs/heads/2.6.34.13-cnxt
The related kernel patches I placed under
board/coolstream/hdx/kernel-2.6.34-patches
The config right in board/coolstream/hdx/kernel2.6.34.13.config
> Please post your Buildroot .config and kernel .config file and more
> details about what your hardware platform is.
The platform is a ARMv6 based Settopbox with a SoC from Nexperia
(cx2450). There are closed kernel modules that have to be used, so most
parts of the kernel config depended on this, but some options are
configurable without to recompile this closed source parts.
I configured BR to build a GCC 4.7.1 with crosstool-ng, after some fine
tuning this works.
My BR config looks like this.
> carsten at wheezy:~/gitprojects/buildroot [arm] $ cat configs/cst_hdx_2.6.34.13_defconfig
> BR2_arm=y
> BR2_CCACHE=y
> BR2_TOOLCHAIN_CTNG=y
> BR2_TOOLCHAIN_CTNG_eglibc=y
> BR2_TOOLCHAIN_CTNG_CONFIG="board/coolstream/hdx/ct_ng_config"
> BR2_TOOLCHAIN_CTNG_CXX=y
> BR2_PACKAGE_BUSYBOX_CONFIG="board/coolstream/hdx/busybox-1.20.2.config"
> BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> BR2_PACKAGE_AUTOMAKE=y
> BR2_TARGET_UBOOT=y
> BR2_TARGET_UBOOT_BOARDNAME="coolstream_hdx"
> BR2_TARGET_UBOOT_CUSTOM_TARBALL=y
> BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="http://ftp.denx.de/pub/u-boot/u-boot-2009.03.tar.bz2"
> BR2_TARGET_UBOOT_CUSTOM_PATCH_DIR="board/coolstream/hdx/u-boot"
> BR2_LINUX_KERNEL=y
> BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
> BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="http://www.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.34/linux-2.6.34.13.tar.bz2"
> BR2_LINUX_KERNEL_PATCH="board/coolstream/hdx/linux-2.6.34-patches"
> BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
> BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/coolstream/hdx/kernel-2.6.34.13.config"
> BR2_LINUX_KERNEL_INSTALL_TARGET=y
The kernel config is appended.
If something is missing then just let me know.
Thanks in advice!
Carsten
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^ permalink raw reply [flat|nested] 5+ messages in thread
* [Buildroot] Load Address and EntryPoint for Kernel
2012-10-28 17:16 ` Carsten Schoenert
@ 2012-10-28 20:21 ` Thomas Petazzoni
2012-11-16 20:36 ` Carsten Schoenert
0 siblings, 1 reply; 5+ messages in thread
From: Thomas Petazzoni @ 2012-10-28 20:21 UTC (permalink / raw)
To: buildroot
Dear Carsten Schoenert,
On Sun, 28 Oct 2012 18:16:36 +0100, Carsten Schoenert wrote:
> Hopefully I have taken the complete one from the original ... :/
> This complete git repo can be found here.
> http://git.coolstreamtech.de/?p=cst-public-linux-kernel.git;a=shortlog;h=refs/heads/2.6.34.13-cnxt
>
> The related kernel patches I placed under
> board/coolstream/hdx/kernel-2.6.34-patches
> The config right in board/coolstream/hdx/kernel2.6.34.13.config
The kernel sources clearly indicate that the entry point should be
0x48000. So it seems like your patches haven't been applied, or your
kernel has been badly configured, or something like that.
> > Please post your Buildroot .config and kernel .config file and more
> > details about what your hardware platform is.
>
> The platform is a ARMv6 based Settopbox with a SoC from Nexperia
> (cx2450). There are closed kernel modules that have to be used, so most
> parts of the kernel config depended on this, but some options are
> configurable without to recompile this closed source parts.
>
> I configured BR to build a GCC 4.7.1 with crosstool-ng, after some fine
> tuning this works.
>
> My BR config looks like this.
> > carsten at wheezy:~/gitprojects/buildroot [arm] $ cat configs/cst_hdx_2.6.34.13_defconfig
> > BR2_arm=y
> > BR2_CCACHE=y
> > BR2_TOOLCHAIN_CTNG=y
> > BR2_TOOLCHAIN_CTNG_eglibc=y
> > BR2_TOOLCHAIN_CTNG_CONFIG="board/coolstream/hdx/ct_ng_config"
> > BR2_TOOLCHAIN_CTNG_CXX=y
> > BR2_PACKAGE_BUSYBOX_CONFIG="board/coolstream/hdx/busybox-1.20.2.config"
> > BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
> > BR2_PACKAGE_AUTOMAKE=y
> > BR2_TARGET_UBOOT=y
> > BR2_TARGET_UBOOT_BOARDNAME="coolstream_hdx"
> > BR2_TARGET_UBOOT_CUSTOM_TARBALL=y
> > BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="http://ftp.denx.de/pub/u-boot/u-boot-2009.03.tar.bz2"
> > BR2_TARGET_UBOOT_CUSTOM_PATCH_DIR="board/coolstream/hdx/u-boot"
> > BR2_LINUX_KERNEL=y
> > BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
> > BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="http://www.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.34/linux-2.6.34.13.tar.bz2"
> > BR2_LINUX_KERNEL_PATCH="board/coolstream/hdx/linux-2.6.34-patches"
> > BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
> > BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/coolstream/hdx/kernel-2.6.34.13.config"
> > BR2_LINUX_KERNEL_INSTALL_TARGET=y
>
> The kernel config is appended.
>
> If something is missing then just let me know.
Either pastebin the entire build log (from scratch), or post all the
patches and configuration files needed to produce the problem.
Best regards,
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Buildroot] Load Address and EntryPoint for Kernel
2012-10-28 20:21 ` Thomas Petazzoni
@ 2012-11-16 20:36 ` Carsten Schoenert
0 siblings, 0 replies; 5+ messages in thread
From: Carsten Schoenert @ 2012-11-16 20:36 UTC (permalink / raw)
To: buildroot
Hello Thomas,
Am 28.10.2012 21:21, schrieb Thomas Petazzoni:
> The kernel sources clearly indicate that the entry point should be
> 0x48000. So it seems like your patches haven't been applied, or your
> kernel has been badly configured, or something like that.
after some time I have found the issue. You are right, at a deeper look
I was able to see that I have made a misspelled naming of my patches.
The patches all missing the 'linux-' prefix. :)
After I have corrected this the correct address was shown while the
kernel build.
> OBJCOPY arch/arm/boot/zImage
> Kernel: arch/arm/boot/zImage is ready
> UIMAGE arch/arm/boot/uImage
> Image Name: Linux-2.6.34.13-nevis
> Created: Fri Nov 16 21:26:38 2012
> Image Type: ARM Linux Kernel Image (uncompressed)
> Data Size: 2131444 Bytes = 2081.49 kB = 2.03 MB
> Load Address: 00048000
> Entry Point: 00048000
> Image arch/arm/boot/uImage is ready
And after all the kernel is excellent booting on the STB.
> Hit any key to stop autoboot: 0
> HDx> tftpboot ubi/uImage
> TFTP from server 192.168.136.4; our IP address is 192.168.136.10
> Filename 'ubi/uImage'.
> Load address: 0xe000000
> Loading: #################################################################
> #################################################################
> ################
> done
> T Bytes transferred = 2131508 (208634 hex)
> HDx> bootm 0xe000000
> ## Booting kernel from Legacy Image at 0e000000 ...
> Image Name: Linux-2.6.34.13-nevis
> Image Type: ARM Linux Kernel Image (uncompressed)
> Data Size: 2131444 Bytes = 2 MB
> Load Address: 00048000
> Entry Point: 00048000
> Verifying Checksum ... OK
> Loading Kernel Image ... OK
> OK
>
> Starting kernel ...
>
> Uncompressing Linux... done, booting the kernel.
> [ 0.000000] Linux version 2.6.34.13-nevis (carsten at wheezy) (gcc version 4.7.1 (crosstool-NG 1.16.0 - buildroot 2012.08-00015-g0256ea5) ) #1 Fri Nov 16 21:26:33 CET 2012
> [ 0.000000] CPU: ARMv6-compatible processor [410fb764] revision 4 (ARMv7), cr=00c5387f
> [ 0.000000] CPU: VIPT aliasing data cache, VIPT aliasing instruction cache
> [ 0.000000] Machine: CoolStream HDx IRD
> [ 0.000000] Memory policy: ECC disabled, Data cache writeback
> [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 97536
> [ 0.000000] Kernel command line: console=ttyRI0 mtdparts=cx2450xflash:384k(U-Boot),128k(Splash),4096k(kernel),28160k(systemFS) root=mtd3 rootfstype=jffs2 rw mem=384M
> [ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
> [ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
> [ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
> [ 0.000000] Memory: 384MB = 384MB total
> [ 0.000000] Memory: 385404k/385404k available, 7812k reserved, 0K highmem
> [ 0.000000] Virtual kernel memory layout:
> [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
> [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
> [ 0.000000] DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
> [ 0.000000] vmalloc : 0x98800000 - 0xe0000000 (1144 MB)
> [ 0.000000] lowmem : 0x80000000 - 0x98000000 ( 384 MB)
> [ 0.000000] modules : 0x7e800000 - 0x80000000 ( 24 MB)
> [ 0.000000] .init : 0x80048000 - 0x80062000 ( 104 kB)
> [ 0.000000] .text : 0x80062000 - 0x80424000 (3848 kB)
> [ 0.000000] .data : 0x80424000 - 0x80441900 ( 119 kB)
> [ 0.000000] NR_IRQS:352
Thanks for your help!
Regards
Carsten
^ permalink raw reply [flat|nested] 5+ messages in thread
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2012-10-28 16:20 [Buildroot] Load Address and EntryPoint for Kernel Carsten Schoenert
2012-10-28 16:43 ` Thomas Petazzoni
2012-10-28 17:16 ` Carsten Schoenert
2012-10-28 20:21 ` Thomas Petazzoni
2012-11-16 20:36 ` Carsten Schoenert
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