mirror of
https://github.com/Rockbox/rockbox.git
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2ce1cdcd8e
Every SD write failed. The card took the write command and went to receive-data state, but never saw the block: CMD12 still found it there, and the controller reported a missing CRC status after each block, 20 retries over. Reads worked. Stress-tested over USB mass storage on a generic rk2705, with a SDHC card, in the normal firmware and in the bootloader alike. sd_init_card() switched the card to high-speed mode with CMD6. This host is an SD 1.01 controller with a card clock of at most 25 MHz, per the rk27xx datasheet; high speed and CMD6 came with SD 1.10, and a card switched to it evidently does not take the data this host drives. The original firmware never switches: after selecting the card it sets the block length and a 1-bit bus and stays at default speed. A slower card clock did not help; dropping the switch alone did. Leave the card at default speed. Tested on a generic rk2705: ums_stress.py over a 32 MiB window of the card - fill, verify, edge sizes, a mixed read/write soak - passes at 2.3 MB/s writing and reading, about 75% of what a 1-bit bus at 25 MHz carries. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Change-Id: Icfafab0bb460c8c0fda3dea455df9a36622bf764 |
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|---|---|---|
| android | ||
| apps | ||
| backdrops | ||
| bootloader | ||
| docs | ||
| firmware | ||
| fonts | ||
| icons | ||
| lib | ||
| manual | ||
| packaging | ||
| tools | ||
| uisimulator | ||
| utils | ||
| wps | ||
| .gitattributes | ||
| .gitignore | ||
| .gitreview | ||
__________ __ ___.
Open \______ \ ____ ____ | | _\_ |__ _______ ___
Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
\/ \/ \/ \/ \/
Build Your Own Rockbox
1. Clone 'rockbox' from git (or extract a downloaded archive).
$ git clone git://git.rockbox.org/rockbox
or
$ tar xJf rockbox.tar.xz
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 mips/m68k/arm-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 generated using the rockboxdev.sh script in the /tools/ folder of the
source.
$ which arm-elf-eabi-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-fuzeplus
$ cd build-fuzeplus
$ ../tools/configure
$ mkdir build-xduoox3
$ cd build-xduoox3
$ ../tools/configure
Questions anyone? Ask on the mailing list or on IRC. We'll be happy to help you!