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Aidan MacDonald 7eeb4e4302 firmware: refactor CACHEALIGN_BITS/SIZE defines
Mostly motivated by PP needing CACHEALIGN_SIZE in linker
scripts, which can't include system.h, so move these to
cpu.h instead. Also gets rid of the default 32 byte line
size that was used if the target didn't define alignment
itself. RK24xx, DM320, and JZ4740 were missing this but
have been confirmed (from datasheets) to use 32-byte cache
lines.

Add checks to make sure the macros are appropriately
(un)defined based on the HAVE_CPU_CACHE_ALIGN define,
and make sure their values are consistent when they
are defined.

Disable HAVE_CPU_CACHE_ALIGN for hosted targets since it
arguably doesn't matter if there's a cache, if we aren't
responsible for cache maintenance.

A few files in rbcodec use CACHEALIGN_SIZE, but these
can be converted to MEM_ALIGN_SIZE, which is identical
to CACHEALIGN_SIZE if the latter is defined. On other
targets, it aligns to at least sizeof(intptr_t).

Change-Id: If8cf8f6ec327dc3732f4cd5022a858546b9e63d6
2026-03-06 14:49:00 +00:00
android build: instead of 'ifdef NODEPS' use 'ifneq ($NODEPS,)' 2025-03-29 14:33:20 -04:00
apps firmware: refactor CACHEALIGN_BITS/SIZE defines 2026-03-06 14:49:00 +00:00
backdrops Rockbox for the HiBy R3 Pro II/R1 2025-12-27 15:44:54 -05:00
bootloader misc: get rid of unused LOADADDRESS define in makefiles 2026-03-05 20:11:07 +00:00
docs plugins: Remove audio_master_sampr_list from the plugin API 2026-03-03 21:31:58 -05:00
firmware firmware: refactor CACHEALIGN_BITS/SIZE defines 2026-03-06 14:49:00 +00:00
fonts FS#9060: Add the WinQangYi-Song BOLD fonts in 9, 10, 11, and 12pt. 2025-11-19 08:33:07 -05:00
icons
lib firmware: refactor CACHEALIGN_BITS/SIZE defines 2026-03-06 14:49:00 +00:00
manual added setting to retain file browser directory on reboots WIP 2026-03-01 15:05:09 -05:00
packaging rgnano: rbutil support and manual updates 2026-01-03 20:03:12 -05:00
tools make: have preprocess2file fail on error 2026-03-06 13:28:24 +00:00
uisimulator Remove Creative Zen Vision and Vision:M ports 2026-02-06 07:31:54 -05:00
utils misc: respect standard __ASSEMBLER__ define in CPU headers 2026-03-05 21:13:50 +00:00
wps Rockbox for the HiBy R3 Pro II/R1 2025-12-27 15:44:54 -05:00
.gitattributes
.gitignore tools: add RegGen utility 2025-12-29 18:51:56 -05:00
.gitreview misc: Add a .gitreview file for better gerrit integration 2021-06-24 07:22:19 -04:00

               __________               __   ___.
     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!