The script to load the elf file at startup need to be improved but it
was a quick hack to have things works on SCB v3.3 and SCB v3.4.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

I generated it with "mdev -s".

But then I removed /dev/mtd5 (we have /dev/mtd5ro and nothing more),
and most tty/pty files are removed as just overhead.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This removes some stuff from the developer's manual (was: "wrs-build")
and adds it to the user's manual.  The stuff is still far from being
perfect, but at least it makes sense and can be made better for release 5.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

We now have a developer's manual, even if the content needs a little
shuffling around. We also describe other manuals even though we still miss
a user's manual, as of this commit.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

All these files come from fpga-config-space/sdbfs: current top of master
(commit 2584f0053cda6db6390354711687c5cca5ea6aef)
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The directory hwinfo-sdb/ includes the "source", trivially written by
hand. The "hwinfo" file is just a bunch of 0xff bytes. The final
file will be a tagged format.

binaries/sdb-for-dataflash is the one that is going to be edited
at build/install time -- in theory only by the manufacturer.
I generated it running the command

   sdbfs/userspace/gensdbfs hwinfo-sdb binaries/sdb-for-dataflash

from within a checkout of fpga-config-space (another ohwr project, the
SDB home).

The default mac addresses match what we used so far: 02:34:56:78:9A:BC
and 02:34:56:78:9A:00 for the WR ports.  The file names ("eth0.ethaddr")
are there so to use a generic setting approach in barebox.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Inconsistent naming has always been a problem for me. Since other
developers agree, we chose to rename all stuff to be wrs_ or wr_
for switch-specific stuff and generic WR functionality.  Ok, the
split is not very clear-cut, I agree.

This commit only fixes the tools and their users:
     wrs_version
     wrs_vlan
     wrs_pstats

It doesn't touch wrsw_hal and wrsw_rtud (nor it adds any prefix to
non-prefixed tools like load-lm32 and so on).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The elf loader for lm32 is able to change integer parameters,
and this is enough, for now, for developers working on the pll code.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

We don't need to wait these extra 3 seconds because we now load UBIfied
which takes more time than these 3 seconds.
We also add the autoboot_select in config because it is a hidden feature
asked by diferent persons.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This bug exists since time 0 (e484c3eb, July 2011, at least).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This reverts commit 352d0d93.
There is no need to do that, things work with full memory.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

We need to reset the CPU outside of the whole loop. This moves stuff
around a lot to do that. Otherwise the variables are set after the CPU
already started, and it may be too late (it is too late in our
specific case).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This allos to write and read variable while loading rt_cpu.elf.
You can read a variable at run time, by not loading the elf file.
To do this use -n to "not" load the file:

   load-lm32 -n rt_cpu.elf pstate=

We still need the file to read the symbol table.  So, <var>= reads
the variable, and <write>=<value> changes it. You can pass several
such actions on the same command line. Please note that you can't
change variables in the BSS section, which is zeroed at run time.

All symbols are trated as 32-bit integer values, so this is not really
generic enough for everything:

  wrs-192.168.16.9# load-lm32 -n rt_cpu.elf memset=
  memset = 134253659 (0x08008c5b)
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This is used by the next commit, where I read the symbol table of an ELF
file the lazy way.

I built the two binaries by rebuilding buildroot with

    BR2_PACKAGE_BINUTILS=y
    BR2_PACKAGE_BINUTILS_TARGET=y

but I won't add the whole binutils binary-set to the WR switch, so the
configuration items are still unset in the default configuration for
WR switch.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This removes the hack of forking a child, because I'll need to do more
than just passing a file name. The other tool using the same hack
(load-virtex) is unchanged as I don't need to work on it.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>