Add standalone program related support for nds32 architecture.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>

Commit 44c6e659 "rename _end to __bss_end__ broke building of a large
number of systems (at least all PowerPC?):

libstubs.o: In function `app_startup':
examples/standalone/stubs.c:197: undefined reference to `__bss_end__'

The rename should not be done for the files in the
examples/standalone/ directory, as these are not using the code from
start.S, but do their own BSS clearing, and either use their own
linker scripts or the ones provided by the compilers.

Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>

Currently, _end is used for end of BSS section.  We want _end to mean
end of u-boot image, so we rename _end to __bss_end__ first.

Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>

The hush shell dynamically allocates (and re-allocates) memory for the
argument strings in the "char *argv[]" argument vector passed to
commands.  Any code that modifies these pointers will cause serious
corruption of the malloc data structures and crash U-Boot, so make
sure the compiler can check that no such modifications are being done
by changing the code into "char * const argv[]".

This modification is the result of debugging a strange crash caused
after adding a new command, which used the following argument
processing code which has been working perfectly fine in all Unix
systems since version 6 - but not so in U-Boot:

int main (int argc, char **argv)
{
	while (--argc > 0 && **++argv == '-') {
/* ====> */	while (*++*argv) {
			switch (**argv) {
			case 'd':
				debug++;
				break;
			...
			default:
				usage ();
			}
		}
	}
	...
}

The line marked "====>" will corrupt the malloc data structures and
usually cause U-Boot to crash when the next command gets executed by
the shell.  With the modification, the compiler will prevent this with
an
	error: increment of read-only location '*argv'

N.B.: The code above can be trivially rewritten like this:

	while (--argc > 0 && **++argv == '-') {
		char *arg = *argv;
		while (*++arg) {
			switch (*arg) {
			...

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>

The nios-32 arch is obsolete and broken. So it is removed.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>

The "-ffixed-r15" option doesn't work well for gcc4. Since we
don't use gp for small data with option "-G0", we can use gp
as global data pointer. This allows compiler to use r15. It
is necessary for gcc4 to work properly.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>

Signed-off-by: Sergey Mironov <ierton@gmail.com>
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>

Since the Blackfin ABI favors higher scratch registers by default, use the
last scratch register (P3) for global data rather than the first (P5).
This allows the compiler's register allocator to use higher number scratch
P registers, which in turn better matches the Blackfin instruction set,
which reduces the size of U-Boot by more than 1024 bytes...

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

Since the Blackfin ABI favors higher scratch registers by default, use the
last scratch register (P3) for global data rather than the first (P5).
This allows the compiler's register allocator to use higher number scratch
P registers, which in turn better matches the Blackfin instruction set,
which reduces the size of U-Boot by more than 1024 bytes...

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

The current files in examples are all standalone application examples,
so put them in their own subdirectory for organizational purposes

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

Address calculated in EXPORT_FUNC in SuperH was wrong, I revised it.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>

Fix alignment fault on ARM when running modules.  With out an explicit
linker file gcc4.2.1 will half word align __bss_start's value.  The word
dereference will crash hello_world.

signed-off-by Richard Woodruff <r-woodruff2@ti.com>

R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc
will refuse to use load/store multiple insns; instead, it issues a
list of simple load/store instructions upon function entry and exit,
resulting in bigger code size, which in turn makes the build for a
few boards fail.

Use r2 instead.

Signed-off-by: Wolfgang Denk <wd@denx.de>

Signed-off-by: Wolfgang Denk <wd@denx.de>

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

Patch by Haavard Skinnemoen, 6 Sep 2006 16:23:02 +0200

This patch adds common infrastructure code for the Atmel AVR32
architecture. See doc/README.AVR32 for details.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

  -Fix asm/io.h macros
  -Eliminate use of CACHE_BYPASS in cpu code
  -Eliminate assembler warnings
  -Fix mini-app stubs and force no small data
  Patch by Scott McNutt, 08 Jun 2006

Patch by Scott McNutt 11, Aug 2005
 -Fix asm/io.h macros
 -Eliminate use of CACHE_BYPASS in cpu code
 -Eliminate assembler warnings
 -Fix mini-app stubs and force no small data

- add support for Analog Devices Blackfin BF533 CPU
- add support for the ADI BF533 Stamp uClinux board
- add support for the ADI BF533 EZKit board
Patches by Richard Klingler, June 11th 2005:

- Add support for Altera Nios-II processors.
- Add support for Psyent PCI-5441 board.
- Add support for Psyent PK1C20 board.

- add empty include/asm-microblaze/processor.h
- add to CREDITS and MAINTAINERS
- add gd initialization
- add MicroBlaze and SUZAKU board to MAKEALL script
- add reset support for SUZAKU
- add flush_cache() for MicroBlaze
- add CFG_FLASH_SIZE to include/configs/suzaku.h since we have fixed
  size flash memory on SUZAKU

  - fix problems with examples/stubs.c for GCC >= 3.4
  - fix problems with gd initialization

* Enable FAT filesystem support for HMI10 board

  - add support for microblaze processors
  - add support for AtmarkTechno "suzaku" board

* Patch by Josef Baumgartner, 10 Feb 2004:
  Fixes for Coldfire port

* Patch by Brad Kemp, 11 Feb 2004:
  Fix CFI flash driver problems

  - add support for Altera Nios-32 CPU
  - add support for Nios Cyclone Development Kit (DK-1C20)

* Patch by Steven Scholz, 29 Sep 2003:
  - A second parameter for bootm overwrites the load address for
    "Standalone Application" images.
  - bootm sets environment variable "filesize" to the resulting
    (uncompressed) data length for "Standalone Application" images
    when autostart is set to "no". Now you can do something like
       if bootm $fpgadata $some_free_ram ; then
               fpga load 0 $some_free_ram $filesize
       fi

* Patch by Denis Peter, 25 Sept 2003:
  add support for the MIP405 Rev. C board

* Provide consistent interface to standalone applications to access
  the 'global_data' structure
  Provide a doc/README.standalone more useful to users/developers.

* Make IceCube MGT5100 FEC driver work

  applications: instead of using (PPC-specific) system calls we now
  use a jump table; please see doc/README.standalone for details

* Patch by Dave Westwood, 24 Jul 2003:
  added support for Unity OS (a proprietary OS)