Instead of assuming everything is a file or a path, allow
loading ELF files from u8 slices. This will enable us to create
images with `include_bytes!()`.
Signed-off-by: Sean Cross <sean@xobs.io>
Move the code used to sign images into its own library file. This will
enable us to use the image signing functions from other code.
Signed-off-by: Sean Cross <sean@xobs.io>
The rationale is that xous-rs should have only architecture
specific code, e.g.: riscv, arm, x86, etc. To make other
crates that depend on it not specify the features.
This could be useful when using xous-rs with `libstd`
for example.
Signed-off-by: Jean-Pierre De Jesus DIAZ <me@jeandudey.tech>
this tries to catch the cases that:
- user tried to run the backup without first running "prepare backup..."
- the USB connection is a little flakey and returning bum data
We can only inspect the plaintext portions of the header, which contains
things like protocol version numbers, time stamps, and language codes.
We use the timestamp validation heavily because it's the only field that
isn't almost always going to be a 0 or 1 when correct, which are highly
likely to be reported anyways if there's a problem with the USB link.
This does assume the user sets the time correctly on the device
doing the backup, and on the Precursor itself.
This adds the `--dump` command, which requires a file that is
a copy/paste of a generated virtual to physical table. An example
of this log would look like this:
```
INFO:shellchat::cmds::net_cmd: V|P 6000d000 40799000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 6000e000 4079a000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 6000f000 4079b000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 60010000 4079c000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 60011000 4079d000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 60012000 4079e000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 60013000 4079f000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 60014000 407a0000 (services\shellchat\src\cmds\net_cmd.rs:770)
INFO:shellchat::cmds::net_cmd: V|P 60015000 407a1000 (services\shellchat\src\cmds\net_cmd.rs:770)
```
and so forth. The script can parse this raw log to create the necessary
page table mappings to read a large region of virtual memory and save
it as a contiguous chunk in a file.
