The current code assumed that READ/WRITE would produce atomic read/writes for
8/16/32-bit words, which in turned put assumption on the memcpy function.
Since some memcpy implementation do not always guarantee such strong assumption,
introduce two new operation READ/WRITE_ATOMIC which provide the necessary
tools to do correct read and write to register in a single memory access.
Change-Id: I37451bd5057bb0dcaf5a800d8aef8791c792a090
- drop support for PP500x: it's very different from other PP and although
it would be possible to support them, I don't have one to test the code
- make sure only the CPU is started
- add PP descriptor to report chip ID and revision
- add code in shell and lua to support pp (no register description yet)
- compile for ARMv4 because PP502x is an ARM7TDMI
Change-Id: I36c4e465dfc2cfdfe7433b2f65cc8f6f0720fe62
It is very similar to how e200tool from MrH works but uses the framework
of hwstub which is makes it completely trivial since we already have the
USB driver written.
Change-Id: I61cdc245d3f828c2682bcd6ecfed5a1cc0094139
A SoC descriptor is not a small object: it can be as large as ~100KiB so
it's better to avoid copying things over.
Change-Id: I1ef862e1260299cdaa0c4d2822ac45968713498a
In might be useful to load hwstub in an environment with the MMU active,
in which case care must be taken on the order in which things are done.
Mostly, one should not disable the MMU before moving stuff around. The code
assumes the linking address (0 currently) is identity mapped.
Change-Id: I8d54ce9e8cadcde2e08990353ca7a46803731ca7
The protocol has evolved a lot during the 2.x.y lifetime, bringing more
features which later got unused. This commit removes all the unused stuff
and simplifies everything:
- drop the feature mask: everything is mandatory or stalled on error
- remove the info request and put all static information in standard USB
descriptors which are part of the configuration descriptor (and can be
retrieved using the standard GetDescriptor request).
- remove the USB interface, we had only one anyway
- remove all endpoint descriptors
- remove the exit/atexit stuff, it never worked as intended anyway
- update the hwstub library and make it able to handle any device
- update the tools (mostly renaming and removing of code)
Change-Id: I1872bba7f4177fc3891180e8f944aab88f5bde31
Some targets like Sony NWZ use a watchdog, so we must disable it to prevent
spurious reboot when we take over
Change-Id: I138a8d7f9a1b089acb2d08d7f6c4a58e8b088b3a
Conditional no longer needed since ctr0.S is private to target, also setup
stack just before jumping to C code only
Change-Id: I74116239be9e87bbe53e8fa814c45f04f242f1c1
The old code would set CPU to 64MHz and HCLK to 9MHz but that's too low for
many things like usb and gpmi. So change HCLK to ~32MHZ.
Change-Id: I6459f25900e42603333cebccb7b0ed26c59640ad
Some older versions of the ROM (TA3 for example), use a 64 byte report size
instead of 1024, so hardcoding 1024 is just a bad idea.
Change-Id: I720c4465cfe2f519bffa307175614bba58766dce
Rename STOP command to EXIT, introduce ATEXIT, this gives better
control over the exit of the stub. Add stmp implementation.
Change-Id: I45442c8b88b9330d12ef439417ca5ffa1520477a
Completely rewrite the Mafile, properly put the usb driver in its
own file and the target specific files in a subdirectory.
Change-Id: Iaeee0128e021d5dad76b4d6035a63e33e2d946c1
Fix the stub in many way to correctly detect the STMP family and
act upon that. Drop some unused commands and bump version.
Rewrite the tool to allows scripting in lua and load the register
description from an XML file using the regtools. Introduce a new
tool to load and run code using the hwstub (either binary format
or Rockbox additive scramble format). Also switch to an optimise
version of the memcpy/move/set functions to correctly handle
alignement issue (like writing a full word/half-word when
possible for registers which is crucial)
Change-Id: Id1d5cfe0b1b47e8b43900d32c5cd6eafae6414f6
The hwemul is only partly imx specific: the stub is stmp specific
but could be ported to other targets, the computer side and the
protocol are mostly stmp independent (or should be).
Change-Id: If88febffe591b0de86ea11cb740455ba20ddc401
