spi: print accurate address where we looked for cookie

debian: Add rules to create a +dfsg tarball

Misc improvements

Signed-off-by: Jeff Epler <jepler@unpythonic.net>

At the next release, this will require
 * Creating a tag on github like "v3.2.0"
 * Using a Debian version number like "3.2.0+dsfg-1"
but it will get us what we want for a Debian package (a source tarball
that excludes the non-DFSG-free 'winio' packages) without breaking the
mesaflash git repository's ability to build for/on Windows.

Since there are no tags at the moment, I tested this by temporarily
naming jepler/mesaflash in debian/watch, and creating a tag there.
It seems to work.

Signed-off-by: Jeff Epler <jepler@unpythonic.net>

All these produced a diagnostic when -Wunused-variables was specified.

These functions always produced diagnostics with -Wreturn-type enabled.
Add an explicit 'return 0;' to indicate success.

Before this fix, enabling -Wpointer-sign would produce a diagnostic.
lbp_recv_packet doesn't care about the sign of its argument, but
strcmp and strncpy do.

These functions are reported as unused when -Wunused-function is enabled.

The compiler warns 'field precision specifier ‘.*’ expects argument of type ‘int’, but argument 3 has type ‘long unsigned int’
[-Wformat=].  Add an explicit cast to int.

This can be skipped with the new commandline flag --no-auto-verify.

Don't automatically try to rewrite the boot block.  Instead, require the
--fix-boot-block flag to be given in order to do so.

Closes #13

pci: Cannot use memcpy() for PCI accesses

On some platforms (such as Debian Jessie amd64), this leads to failures
like this:

    $ sudo mesaflash --device 5i24 --write 5i24_16_svst4_8.bit
    Checking file... OK
      File type: BIT file
    Erasing sector 0 for boot block
    BootBlock installed
    Failed to write valid boot sector

    You must power cycle board or use --reload command to load updated firmware.

I twigged to this fact upon seeing '__memcpy_sse2_unaligned' in the
debugger, which put me in mind of the fix we applied 3 years ago
in linuxcnc at commit 12ba77d3b.

Closes #4.

Fixed spelling in error messages

issues compiling under gcc 5.1.1 on fedora 22 x86_64

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

base addresses of modules are going to be changeable

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

factor out common board structure initialisations to function

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

don't check bitfile id on above cards while --write and --verify

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>

Signed-off-by: Michael Geszkiewicz <micges@wp.pl>