mirror of
git://projects.qi-hardware.com/xburst-tools.git
synced 2024-11-01 12:38:27 +02:00
update README
This commit is contained in:
Xiangfu Liu
parent
278b15c365
commit
6ba5757cd5
102
README
102
README
@ -1,62 +1,55 @@
|
||||
Prepare for Reflash Device
|
||||
--------------------
|
||||
=serial console=
|
||||
take off the cover of PCB, then you will send the "GND" and "TXD"
|
||||
and th TP74 is the "RXD", you can get serial output from those pins
|
||||
you need a TTL <-> RS232 converter. here[1] is the serial PIN in the board.
|
||||
at the back of Ben Nanonote, there is "GND", "TXD" and "RXD",
|
||||
you can get serial output from those pins
|
||||
you need a TTL <-> RS232 converter. because the Ben Nanonote serial
|
||||
console is TTL. here[1] is the serial PIN in the board.
|
||||
|
||||
=toolchain=
|
||||
$ git clone git://github.com/lindnermarek/openwrt-x-burst.git[2]
|
||||
$ git checkout --track -b x-burst origin/x-burst
|
||||
$ make menuconfig
|
||||
(select 'XBurst JZ47x0 [2.6]' in Target System
|
||||
for configure the u-boot in setp: 4)
|
||||
(select 'XBurst JZ47x0 [2.6]' in 'Target System')
|
||||
$ make
|
||||
we will get toolchain under /PATH/TO/openwrt-x-burst/staging_dir/
|
||||
then you will get toolchain under /PATH/TO/openwrt-x-burst/staging_dir/
|
||||
toolchain-mipsel_gcc-4.1.2_uClibc-0.9.30.1/usr/bin
|
||||
|
||||
=xburst-tools (reflash tools)=
|
||||
you can get source in git://github.com/xiangfu/xburst-tools.git[3]
|
||||
=xburst-tools (usbboot tools)=
|
||||
you can get source code at git://github.com/xiangfu/xburst-tools.git[3]
|
||||
$ cd /PATH/TO/xburst-tools/usbboot
|
||||
$ ./autogen.sh && ./configure && make && sudo make install
|
||||
then you got the 'usbboot' command. that is for the reflash.
|
||||
|
||||
=u-boot=
|
||||
in openWRT menuconfig-->Target Images-->Build U-Boot bootloader -->
|
||||
U-Boot target board (NEW) --> input 'qi_lb60'
|
||||
U-Boot target board (NEW) --> input 'qi_lb60
|
||||
|
||||
here[4] is the u-boot github URL
|
||||
$ make qi_lb60_config
|
||||
$ make
|
||||
there is 'u-boot-nand.bin' is for Ben
|
||||
|
||||
=kernel(2.6.24)=
|
||||
here[5] is the kernel GIT URL.
|
||||
here[5] is the kernel GIT URL. this kernel is work in Ben Nanonote.
|
||||
yes. there is another kernel in openWRT(2.6.28), it's will work later :-)
|
||||
$ make qi_lb60_defconfig
|
||||
$ make uImage
|
||||
there is 'arch/mips/boot/uImage' for Ben.
|
||||
|
||||
=CPU Jz4740=
|
||||
Jz4740 is a multimedia application processor targeted at mobile devices
|
||||
PMP. Incorporates the XBurst CPU core based on leading
|
||||
micro-architecture technology, this processor provides high integration,
|
||||
high performance and a low power consumption solution for embedded devices.
|
||||
|
||||
Boot up
|
||||
The Jz4740 can be set to boot from NOR or NAND.
|
||||
If booted from NAND, the CPU fetches the first page from NAND and uses the
|
||||
first 4 bytes on it to know how the NAND chip should be treated (16/8-bit
|
||||
bus, 2/3 row cycles). After that it copies the first 8kB from NAND and
|
||||
copies it to the I-Cache for execution.
|
||||
|
||||
Ingenic Media Extension Instruction Set
|
||||
According to the MXU User Guide, the XBurst processor supports additional
|
||||
instructions called the Ingenic Media Extension Instruction Set (they
|
||||
call it an SIMD instruction set).
|
||||
|
||||
Excerpt from the PDF:
|
||||
Processors (such as the Jz4740) have 60 extra SIMD commands used for the
|
||||
optimization of multimedia codecs such as MPEG4, H264, VC-1, RMVB, ...
|
||||
and other multimedia decoder algorithms that can be optimized using the MXU.
|
||||
|
||||
Image Processing Unit
|
||||
The Jz4740 also has an IPU which has the following features:
|
||||
* Video frame resize
|
||||
* Color space conversion: 420/444/422 YUV to RGB convert
|
||||
|
||||
=debian package=
|
||||
1. run 'dh_make'
|
||||
2. edit the file under 'debian' folder (create by 'dh_make')
|
||||
3. run 'dpkg-buildpackage -rfakeroot' to create the deb package and source
|
||||
package
|
||||
How To Reflash
|
||||
--------------------
|
||||
1. plug the Ben to your computer. direct connect. no usb hub.
|
||||
2. short the two pin ('boot from usb' show in [1])
|
||||
3. press 'RESET' at the back of Ben
|
||||
4. in you computer run [6] and [7]. then you flashed the bootloader and kernel
|
||||
to nand flash.
|
||||
5. rootfs: format your SD card.
|
||||
the first partition must VFAT and others is EXT2.
|
||||
we can put the kernel(uImage) in the first partition. put the rootfs in second partition.
|
||||
download the rootfs [8], uncompress it to second partition of SD card
|
||||
6. now you can boot your Ben.
|
||||
|
||||
----
|
||||
[1] http://www.openmobilefree.net/?p=61
|
||||
@ -67,9 +60,26 @@ http://github.com/lindnermarek/openwrt-x-burst/commits/x-burst
|
||||
http://cloud.github.com/downloads/xiangfu/xburst-tools/xburst-tools_0.0_200906.tar.gz
|
||||
http://cloud.github.com/downloads/xiangfu/xburst-tools/xburst-tools_0.0_200906-1_i386.deb
|
||||
[4] http://github.com/xiangfu/qi-u-boot/tree
|
||||
this git repos have two branch [master] [pi]
|
||||
[master] is the v2009.06
|
||||
[pi] is 1.1.6 old version.(will detele laster)
|
||||
[master] is the last u-boot.
|
||||
command: "mmc init;fatload mmc 0 0x80600000 uImage;bootm" is for boot the kernel in sd card.
|
||||
[5] git://github.com/xiangfu/qi-kernel.git
|
||||
only one master branch in kernel git. so you can just
|
||||
'git clone' and 'make uImage' to get the kernel image
|
||||
[6] flash.u-boot.sh
|
||||
--------
|
||||
#!/bin/bash
|
||||
U_BOOT=/PATH/TO/u-boot-nand.bin
|
||||
sudo ../usbboot/src/usbboot -c "\
|
||||
boot;\
|
||||
nprog 0 $U_BOOT 0 0 -n"
|
||||
|
||||
[7] flash.kernel.sh
|
||||
----------
|
||||
#!/bin/bash
|
||||
START_PAGE=2048
|
||||
KERNEL=/PATH/TO/KERNEL_FOLDER/arch/mips/boot/uImage
|
||||
sudo usbboot -c "boot"
|
||||
sudo usbboot -c "nprog $START_PAGE $KERNEL 0 0 -n"
|
||||
|
||||
[8] http://www.openmobilefree.net/other/file/root26.tar.bz2
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user