onion omega2+
Mori Hiroki
yamori813 at yahoo.co.jp
Tue May 9 00:18:08 UTC 2017
Hi.
I think if U-Boot work memory make broken then
Uncompressing Kernel Image is NG.
Some ARM U-Boot is use top address in work memory.
If this case your kernel start address to move to
after work memory. But I never see in MIPS.
And What is set FDT_DTS_FILE in your kernel configuration ?
----- Original Message -----
> From: Mike Wolman <mike at wolman.co.uk>
> To: freebsd-mips at freebsd.org
> Cc:
> Date: 2017/5/9, Tue 07:48
> Subject: Re: onion omega2+
>
>
> More info in case anyone can point me in the right direction.
>
> I have found:
>
> https://forum.openwrt.org/viewtopic.php?id=53865
>
> I have tried changing how lzma compresses the kernel by adding -d20 to
> the build scripts eg:
>
> /usr/local/bin/lzma e
> /home/mike/omega2/src/../root/mipsel_ap/boot/kernel.MT7628_FDT/kernel \
> /home/mike/omega2/src/../tftpboot/kernel.MT7628_FDT.lzma -d20
>
> This did not work.
>
>
> Looking at the onion omega conf I see that it uses mkuzip and not lzma
> with the following settings:
>
> X_FSIMAGE_CMD="mkuzip"
> X_FSIMAGE_ARGS="-L -d -s 65536 -v"
> X_FSIMAGE_SUFFIX=".ulzma"
>
> So tried the following:
>
> mkuzip -L -d -s 65536 -v -o kernel.MT7628_FDT.ulzma kernel.MT7628_FDT
>
> mkimage -A mips -O linux -T kernel -C lzma \
> -a 0x80001000 -e 0x80001100 \
> -n "FreeBSD" -d kernel.MT7628_FDT.lzma
> kernel.MT7628_FDT.ulzma.uImage
>
>
> But this did not work either.
>
>
>
> On 08/05/2017 19:41, Aleksandr Rybalko wrote:
>> Hi Mike!
>>
>> I see you have no "OK" after "Uncompressing Kernel Image
> ...", so
>> first point uboot decompressor fail.
>> Why fail? Because you have wrong base address in image:
>> Load Address: fffffff2
>> Entry Point: fffffff2
>> MIPS32 machines have RAM mapped to 0x80000000 address, so adding its
>> size, you will get max address (if 16MB, it will be 0x81000000), but
>> you uboot image was created with 0xfffffff2.
>>
>> Even more, unpacked kernel expects it will be called at 0x80001100. so
>> if you have ELF kernel (file with ELF header, like every executable)
>> that file have to be loaded at (0x80001100 - ELF_HEADER_SIZE).
>> In most cases it will be 0x80001100 - 0x100 = 0x80001000. But sometime
>> (I did not found why) it can be 0x20, you can find it by looking at
>> .text section in readelf -S.
>>
>> So if you have kernel with entry point 0x80001100 and .text segment
>> offset 0x100, you have to create uboot image with load address
>> 0x80001000 and entry point 0x80001100.
>>
>> If that step successful you will get:
>> /Uncompressing Kernel Image/ ... OK
>> Starting kernel ...
>>
>> Last line mean, uboot did jump into kernel code.
>>
>> Good luck.
>>
>> 2017-05-07 18:20 GMT+03:00 Mike Wolman <mike at wolman.co.uk
>> <mailto:mike at wolman.co.uk>>:
>>
>> Hi,
>>
>> I am trying to get FreeBSD working on this board - I think I am
>> almost there in getting it working but need some help please.
>>
>> I have followed instructions from the freebsd-wifi-build and
>> *think* I have got everything correct - I am trying to do this on
>> a CURRENT setup:
>>
>> FreeBSD f64-current.mw.office 12.0-CURRENT FreeBSD 12.0-CURRENT #0
>> r317887: Sun May 7 03:20:34 UTC 2017
>> mike at f64-current.mw.office:/usr/obj/usr/src/sys/GENERIC-NODEBUG amd64
>>
>>
>> $ cat ~/.freebsd-wifi-build-settings.cfg
>> X_SKIP_MORE_STUFF=YES
>> X_EXTRA_SRC_CONF=~/omega2/src.conf
>>
>> $ cat ~/omega2/src.conf
>> WITHOUT_CLANG=YES
>> WITHOUT_CLANG_FULL=YES
>>
>> get dts files from thread
>> http://community.onion.io/topic/1099/openwrt-on-the-omega-2/8
>> <http://community.onion.io/topic/1099/openwrt-on-the-omega-2/8>
>>
>>
>> cd ~/omega2/src/sys/gnu/dts/mips
>> fetch
>>
> https://raw.githubusercontent.com/WereCatf/source/image/target/linux/ramips/dts/OMEGA2.dtsi
>>
> <https://raw.githubusercontent.com/WereCatf/source/image/target/linux/ramips/dts/OMEGA2.dtsi>
>> fetch
>>
> https://raw.githubusercontent.com/WereCatf/source/image/target/linux/ramips/dts/OMEGA2.dts
>>
> <https://raw.githubusercontent.com/WereCatf/source/image/target/linux/ramips/dts/OMEGA2.dts>
>> fetch
>>
> https://raw.githubusercontent.com/WereCatf/source/image/target/linux/ramips/dts/OMEGA2P.dts
>>
> <https://raw.githubusercontent.com/WereCatf/source/image/target/linux/ramips/dts/OMEGA2P.dts>
>>
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink buildworld
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink buildkernel
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink installworld
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink installkernel
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink distribution
>>
>>
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink mfsroot
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink fsimage
>> X_DTS_FILE=OMEGA2P.dts KERNCONF=MT7628_FDT
>> ../freebsd-wifi-build/build/bin/build ralink uboot
>>
>>
>> Create flash:
>>
>> X_FLASH=kernel.MT7628_FDT.lzma.flash
>> dd if=/dev/zero bs=$(( 0x200000 )) count=1 of=${X_FLASH}
>> dd if=kernel.MT7628_FDT.lzma.uImage of=${X_FLASH} conv=notrunc
>> dd if= mfsroot-ralink.img.lzma >> ${X_FLASH}
>>
>>
>> $ readelf -h kernel.MT7628_FDT | grep Entry
>> Entry point address: 0x80001100
>>
>>
>>
>>
>> Now on the omega over serial - I didnt get the network expansion
>> doc thing so am doing stuff with usb rather than tftp
>>
>> I am not 100% sure about the 0x80001100 and the fatload and have
>> tried this
>>
>> Omega2 # fatload usb 0:1 0x80001100 /kernel.MT7628_FDT.lzma.flash
>> *
>> *
>> Reading file "/kernel.MT7628_FDT.lzma.flash"
>> *
>> **
>> **
>> **
>> ******
>>
> *********************************************************************************************************************************************
>> ******
>> *
>> FAT: 2108463 Bytes read
>> Omega2 # bootm 0x80001100
>> ## Booting image at 80001100 ...
>> Image Name: FreeBSD
>> Image Type: MIPS Linux Kernel Image (lzma compressed)
>> Data Size: 1365122 Bytes = 1.3 MB
>> Load Address: fffffff2
>> Entry Point: fffffff2
>> Verifying Checksum ... OK
>> Uncompressing Kernel Image ...
>>
>>
>> At this point nothing happens and console hangs - note in
>> OMEGA2.dtsithe console is set to ttyS0:
>>
>> bootargs = "console=ttyS0,115200";
>>
>>
>>
>>
>> I have also tried with just kernel.MT7628_FDT and
>> kernel.MT7628_FDT.lzma but both fail:
>>
>> Omega2 # fatload usb 0:1 0x80001100 /kernel.MT7628_FDT.lzma.uImage
>> *
>> *
>> Reading file "/kernel.MT7628_FDT.lzma.uImage"
>> *
>> **
>> **
>> ******
>>
> ******************************************************************************************************************************
>> **********
>> *
>> FAT: 1365186 Bytes read
>> Omega2 # bootm 0x80001100
>> ## Booting image at 80001100 ...
>> Image Name: FreeBSD
>> Image Type: MIPS Linux Kernel Image (lzma compressed)
>> Data Size: 1365122 Bytes = 1.3 MB
>> Load Address: fffffff2
>> Entry Point: fffffff2
>> Verifying Checksum ... OK
>> Uncompressing Kernel Image ...
>>
>>
>> A few comments on the hardware for anyone who wants to get one:
>>
>> Get the expansion dock with serial port access - the power dock
>> does not provide serial access - i think it is possible to use an
>> ftdi ttl serial chip/cable but have not tried.
>>
>> Stupidly I forgot this only has wifi access so you are not able to
>> tftp boot this without getting the ethernet network expansion but
>> loading stuff up from a usb memory stick is seem fine from u-boot.
>>
>> I do not think that it is possible to boot from the SD card on the
>> Omega2+ - which is a shame.
>>
>> Thanks for reading,
>>
>> Mike.
>>
>>
>>
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>>
>>
>>
>> --
>> WBW
>> -------
>> Rybalko Aleksandr <ray at ddteam.net <mailto:ray at ddteam.net>>
>>
>
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