This variable, if not empty, allows to rebuild buildroot
in the previous build place, thus avoiding most build time.
This is useful for me when I just add packages and don't need
to recreate the compiler from scratch.

Well, so it is documented in the commit message.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

During the rebase of branch "http-management" I dealt with some conflicts,
and CONFIG_RSYSLOG was lost in the buildroot config. This adds it back.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Running "ifup eth0" if eth0 is configured for dhcp would make the
client try a little while and then give up. Thus, if the dhcp server
is currently down we end up without IP address. This happens after a
power failure, if the switch reboots faster than the dhcp server.

Also, avoid ifplugd, that won't help in this case (the link is up,
so no "link up" will happen later.

This new configuration works in all cases:
     - eth0 is configured with a static address in /etc/network/interfaces
     - dhcp-driven, and link goes down and then up
     - dhcp-driven, and server not ready at boot time
     - dhcp-driven and all fine since boot time
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The original ifplugd.action used "exec" improperly. Also,
we should not force "ifconfig eth0 down" when link down is detected,
or it will bever come up again.

Fix both items, even if we are not going to use ifplugd any more in
the next commit.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

it really looks like ifplugd is not reading this file, so overwrite
the default one with an empty file, to avoid our users the effort to
track its use. The file is not empty, actually, but include this
message.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

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

By now, code here and in wrpc-sw is the same. The binary
built there is working, so let's pick that one. It
can be rebuilt in wrpc-sw by running

  make wr_switch_defconfig

The exact commit used to build what you have in binaries/ (or
in /wr/lib/firmware/rt_cpu.bin in the target system) can be
easily retrieved by extracting the commit name. For this binary:

   morgana% strings binaries/rt_cpu.bin | grep wrpc
   wrpc-v2.1-for-wrnic-19-g566aa53
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This copies over pp_printf from wrpc-sw, builds it, and changes
trace.h to explicitly call pp_printf. Actually, it also
define mprintf to pp_printf.

The excplicit call is needed, or the --gc-functions will discard the
pp_printf code if no object file refers to it.  Later,
arch/lm32/ram.ld redirects mprintf to pp_printf, but that would be too
late.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

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

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

While we have no gpio.h in wrpc-sw, it's better to clarify this
header is for wr-switch.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

use irq.h from wrpc-sw; it only differs in white space.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

The uart module in wrpc-sw is a superset of this one (it has vuart), but
all the registers are compatible.

The files were slightly different, but nothing substantial, mainly
because wrpc-sw evolved a little from its original form. By copying
those uart.[ch] we shorten the difference with no techinical change, even
if the binary file differs from the previous commit.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

While we have no gpio.h in wrpc-sw, it's better to clarify this
header is for wr-switch.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This removes defs.h by copying the only two inlines into the only file
that uses them.

It also replaces uart.h with vuart.h, which is a compatible superset
(so now uart.c here and wrpc-sw are almost the same).
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

The commit replaces the linker script with the one in wrpc-sw, with
the only addition of the "mbox" section, which is still missing from
that script.

The only remaining differences are the configurable ram and stack sizes.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

This applies the effect of the following wrpc-sw commits, limited
to arch/lm32.

   583ab27 build: move libs from ldscript to LDFLAGS
   a502f9d arch/lm32/ram.ld: provide mprintf if missing
   394d140 general: add copyright notes

Additionally, it copies over crt0.S and debug.S from wrpc-sw;
but the only change is white space.

Now the only remaining difference in arch/ is the linker script.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

This matches commit "5d3fc51 compilation fixes" in wrpc-sw. At this
point the two arch/lm32 only differ in the linker script, that has an
mbox section in wr-switch-sw, missing in wrpc-sw.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This has no effect on rt_cpu.bin.  The commit unifies the directory
softpll/ between wr-switch and wr-node. No differences are left.

This is an ugly ifdef, but I prefer merging the code base (removing
duplicates) before addressing the configuration problem.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

Besides, the very short pps width was something we had to fix anyways.
Now it's 10ms as agreed (same as wrpc-sw).  This changes the generated
binary.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

The addition of missing prototypes (now zeroing the diff for
softpll_ng.h between here and wrpc-sw) changes the binary being built,
but I assume we can feel safe about it.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

This introduces a fake wrc.h and renames timer.h to syscon.h.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.

Here I copy includes/std/ from wrpc-sw, and change hw includes
to be the same as in wrpc-sw.  I'm aware rt/include/stdint.h is
better than the new rt/include/std/stdint.h but that's it for now.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The commit is part of the effort in unifying softpll with wrpc-sw,
and later remove the duplicated code here in wr-switch-sw.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Adding new features to the Local Management Tool
- SFP calibration
- Endpoint Tx/Rx Calibration
- Terminal improved
- New advance menu

Fixes: Reboot after new configurations.

Local Management Tool new features:

- New functions in functions.php to parse wrsw_hal.conf file.
- Change switch mode GrandMaster/Master
- Change master/slave for each endpoint from wrsw_hal.conf file

New features for the local management tool:

- Login
- Logout
- Included session check in .php files
- Menu and topmenu modificaded for logged users
- Slave.png improved.

var/www/endpoint.php minor text fix

var/www/functions.php
	- help minor fixes

/var/www/functions.php fix:
	master/slave issue.

Fixing PTP bugs.
Adding info button
Adding info texts and php files
Adding comments to the code

New CSS for the tool.
PHP files update.
New Dashboard

Adding features:
	- PTP Configuration
	- Endpoint Configuration
	- Halt System
	- Reboot System
	- File Transfer
	- Load LM32 & FPGA binaries.
	- Terminal emulator
	- Contact us

Issues:
VLAN is not yet available

New options added to the local management tool menu:
	- Loading binaries to LM32
	- Loading binaries to FPGA
	- Terminal Simulator

New files:
- /var/www/load.php: It is used to load binary files into the lm32 or
the FPGA
- /var/www/terminal.php: It runs a terminal simulator, similar to a
accessing a SSH terminal.

Adding new features to the management parts:
	- Halting system
	- Rebooting system
	- Remounting filesystem as rw
	- Remounting filesystem as ro

Modification of lighttpd.config file in order to make possible uploading
files to the switch. (flashing and loading tools)

Function wrs_check_writeable() added:
	It checks whether the switch filesystem is writable or not.

Local Management Tool adition of new features to exe_program.php
	- Rebooting switch
	- Halting system
	- Remounting filesystem as RW
	- Remounting filesystem as RO