IdeaBoxx
™
Product Manual – © 2015
8
Bootloader
The bootloader source code is in
/opt/jade/bsp303/sources/u-boot
. To rebuild it, use the .
/build.sh
shell script
provided in the source code folder. The result will be multiple files in the top-level source code folder. The new binary
bootloader file will be named
/opt/jade/bsp303/sources/u-boot/u-boot.bin
.
To program the bootloader into the Jade board:
1.
Turn on power to the IdeaBoxx board.
2.
Press a button to stop the bootloader.
3.
Type
tftp 40000000 u-boot.bin
4.
Type
erase 10000000 1002FFFF
5.
Type
cp.b 40000000 10000000 $filesize
6.
Type
reset
and Jade will reset and execute the new bootloader.
Linux Kernel
The Linux kernel source tree is in
/opt/jade/bsp303/sources/xxsvideo/linux-3.0.3
.
Before reconfiguring or building the kernel for the first time, the user must execute
make
jade-ideaboxx_defconfig
.
To reconfigure the Linux kernel (e.g., to add or remove drivers), execute
make menuconfig
. To rebuild it, change to the top-
level directory of the kernel source tree and execute
./build.sh
. This will create a new kernel as
/opt/jade/bsp303/sources/xxsvideo/linux-3.0.3/arch/arm/boot/uImage
. The new kernel will also be
copied to
/tftpboot/uImage303-$YYYYMMDD-HHMM
where the date and time are given as a four-digit year and two-
digit month, day, hour (24-hour format) and minute. A symbolic link to that file is also created as
/tftpboot/uImage
.
To program the new kernel into the Jade board:
1.
Turn on power to the IdeaBoxx board.
2.
Press a button to stop the bootloader.
3.
Type
tftp 40000000 uImage
4.
Type
erase 10060000 102FFFFF
5.
Type
cp.b 40000000 10060000 $filesize
6.
Type
reset
and Jade will reset and execute the new Linux kernel.
Root Filesystem
The root filesystem is in
/opt/jade/bsp303/rootfs-final
. To build a new root filesystem image suitable to be
programmed into Flash, change to the root filesystem directory and execute
./build.sh
. This will create a new root
filesystem binary image as
/opt/jade/bsp303/sources/xxsvideo/linux-3.0.3/arch/arm/boot/uImage
. The image will also be copied
to
/tftpboot/rootfs303-$YYYYMMDD-HHMM
where the date and time are given as four-digit year and two-digit month,
day, hour (24-hour format) and minute. A symbolic link to that file is also created as
/tftpboot/rootfs.bin
.
To program the new image into the Jade board:
Turn on power to the IdeaBoxx board.
1.
Press a key in the serial terminal program to stop the bootloader.
2.
Type
tftp 40000000 rootfs.bin
3.
Type
erase 10300000 11dfffff
4.
Type
cp.b 40000000 10300000 $filesize
5.
Type
reset
to reset Jade and boot the new filesystem.
