Rockbox
027c035a4e
This was spotted while playing with qemu-jz: 1) rockbox reads TECR and TESR which are described as write-only registers. Datasheet doesn't mention what happens if they are readed. Apparently this doesn't have fatal side effects. It comes down to two defines from jz4740.h __tcu_stop_counter(n) and __tcu_start_counter(n) which use read-modify-write sequence. 2) rockbox accesses out of bound offset 0xd4 in DMA memspace. It comes from dis_irq() in system-jz4740.c. NUM_DMA is 6 but DMA channels are 0-5 so (irq <= IRQ_DMA_0 + NUM_DMA)) bound check is wrong. This are *NOT* tested on device. Change-Id: I29dff6a4f828030877b7d50fbcc98866478b9e3d Reviewed-on: http://gerrit.rockbox.org/338 Reviewed-by: Bertrik Sikken <bertrik@sikken.nl> Tested-by: Purling Nayuki <cyq.yzfl@gmail.com> Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com> |
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| apps | ||
| backdrops | ||
| bootloader | ||
| debian | ||
| docs | ||
| firmware | ||
| flash | ||
| fonts | ||
| gdb | ||
| icons | ||
| lib | ||
| manual | ||
| packaging | ||
| rbutil | ||
| tools | ||
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__________ __ ___.
Open \______ \ ____ ____ | | _\_ |__ _______ ___
Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
\/ \/ \/ \/ \/
Build Your Own Rockbox
1. Check out 'rockbox' from SVN (or extract a downloaded archive).
$ svn co svn://svn.rockbox.org/rockbox/trunk rockbox
or
$ tar xjf rockbox.tar.bz2
2. Create a build directory, preferably in the same directory as the firmware/
and apps/ directories. This is where all generated files will be written.
$ cd rockbox
$ mkdir build
$ cd build
3. Make sure you have sh/arm/m68k-elf-gcc and siblings in the PATH. Make sure
that you have 'perl' in your PATH too. Your gcc cross compiler needs to be
a particular version depending on what player you are compiling for. These
can be acquired with the rockboxdev.sh script in the /tools/ folder of the
source, or will have been included if you've installed one of the
toolchains or development environments provided at http://www.rockbox.org/
$ which sh-elf-gcc
$ which perl
4. In your build directory, run the 'tools/configure' script and enter what
target you want to build for and if you want a debug version or not (and a
few more questions). It'll prompt you. The debug version is for making a
gdb version out of it. It is only useful if you run gdb towards your target
Archos.
$ ../tools/configure
5. *ploink*. Now you have got a Makefile generated for you.
6. Run 'make' and soon the necessary pieces from the firmware and the apps
directories have been compiled, linked and scrambled for you.
$ make
$ make zip
7. unzip the rockbox.zip on your music player, reboot it and
*smile*.
If you want to build for more than one target, just create several build
directories and create a setup for each target:
$ mkdir build-fmrecorder
$ cd build-fmrecorder
$ ../tools/configure
$ mkdir build-player
$ cd build-player
$ ../tools/configure
Questions anyone? Ask on the mailing list. We'll be happy to help you!