i.MX: implement a more correct version of EPIT timer.

This patch is providing a complete version of the EPIT timer.

Note, however that the GPT timer in the same file is still not
complete.

Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net>
Message-id: 1365624982-15647-1-git-send-email-jcd@tribudubois.net
Reviewed-by: Peter Chubb <peter.chubb@nicta.com.au>
[PMM: wrapped an overly long line]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
prep: Fix NIP reset value

The value was changed by commit 09d9828ace37ead29d510a7e24e63c2f15cd4b1c
"PPC: fix hreset_vector for 60x, ...".

Change it back for prep machine to unbreak OpenHack'Ware.

Signed-off-by: Fabien Chouteau <chouteau@adacore.com>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
prep: Add ELF support for -bios

This prepares for switching from OpenHack'Ware to OpenBIOS.

While touching the error handling code, switch from aborting hw_error()
to fprintf()+exit() and suppress failing without -bios for qtest.

Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
prep: Make System I/O port 0092 read/write

Port 0x0092 is documented as read/write, so for now return the
endianness state instead of hardcoded 0x00.

Signed-off-by: Julio Guerra <guerr@julio.in>
[AF: Extracted from larger port 0092 patch]
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
Merge remote-tracking branch 'pmaydell/arm-devs.next' into staging

# By Jean-Christophe DUBOIS
# Via Peter Maydell
* pmaydell/arm-devs.next:
  i.MX: implement a more correct version of EPIT timer.

Message-id: 1367603215-5120-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Merge remote-tracking branch 'afaerber-or/prep-up' into staging

# By Andreas Färber (1) and others
# Via Andreas Färber
* afaerber-or/prep-up:
  prep: Make System I/O port 0092 read/write
  prep: Add ELF support for -bios
  prep: Fix NIP reset value
configure: Check that "libtool" is not the MacOSX one

The "libtool" binary on MacOSX is not GNU libtool, and doesn't support
anything like the same set of command line options. Test whether we
have accidentally picked this up (by looking for whether it handles
the GNU --version switch), and discard it if so. The fallback machinery
for the "we don't have a libtool" case will work fine. This fixes a
failure in "make install" on MacOSX.

Reported-by: Peter Cheung <mcheung63@hotmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1367701071-6630-1-git-send-email-peter.maydell@linaro.org
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>