This changes a while the flash script, and updates the documentation
accordingly. It is a single commit because I couldn't test the script
until all changes were in place

Main changes:
  - fixed used interation: now it stops asking to remove the jumper
  - if "-b" is used and WRS_BASE_DIR is unset, defaults to current dir
  - all temporary files are in a specific directory, reported to the user
  - the script checks for the required files as first step, to err out soon
  - the 5-second sleep is removed, as there's an interactive step anyways
  - error messages are a little more verbose, to understand what was wrong
  - option parsing is more selective about flags for the flasher
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: Federico Vaga <federico.vaga@gmail.com>

This patch change the build of a package. Following the main change:
- wrs-build-all: it does not build cpio and jffs2 images, but only
  a .tar.gz archive which will be included into the package
- flash-wrs: it create the cpio and jffs2 images before flashing
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

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

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The wr_nic driver already configure MAC adresses for all the switch
ports
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The first step of the new flashing procedure is to write barebox,
Linux kernel and the file system into the DDR memory. In the next
steps the kernel will write itself into the NAND memory.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The script accepts two MAC address. The first MAC address (MAC1) will
be assigned to the ethernet port on board. The second MAC address
(MAC2) will be assigned to the first switch port; the following switch
ports are sequential MAC addresses from this one.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

The flasher script will write on the DDR memory the value
content in magicstr. When barebox start, it checks for this
string in the memory. If the string is there, barebox
automatically boot the kernel from the DDR memory.
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

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

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

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico@tornado.i.gnudd.com>
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Federico Vaga <federico@tornado.i.gnudd.com>