This patch adds support for comments in the input to mkenvimage, i.e. in
the environment source: All lines starting with a # in the firs column
will be ignored.

Additionally empty lines will also be ignored.

Signed-off-by: Dominik Muth <dominik.muth@bkvibro.com>

On architectures where 'long' is 64 bit, the u-boot environment
as seen by the fw_env tools was missing 4 bytes.
This patch fixes getenvsize(), and thus also ensures that the
environment's CRC32 checksum is calculated correctly.

Signed-off-by: Dominic Sacré <dominic.sacre@gmx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Tom Rini <trini@ti.com>

Since Linux 3.15, relative path feature and related fixes,
cleanups have been merged to the top Makefile.

The relative path feature looks stable enough, so let's import it
to U-Boot along with various cleanups.

Commits imported from Linux (some need adjustment) are:

[1] commit 7e1c04779efd by Michal Marek
  kbuild: Use relative path for $(objtree)

[2] commit 890676c65d69 by Michal Marek
  kbuild: Use relative path when building in the source tree

[3] commit 9da0763bdd82 by Michal Marek
  kbuild: Use relative path when building in a subdir of the source tree

[4] commit c2e28dc975ea by Michal Marek
  kbuild: Print the name of the build directory

[5] commit 066b7ed95580 by Michal Marek
  kbuild: Do not print the build directory with make -s

[6] commit 3f1d9a6cec01 by Michal Marek
  kbuild: make -s should be used with kernelrelease/kernelversion/image_name

[7] commit 7ff525712acf by Masahiro Yamada
  kbuild: fake the "Entering directory ..." message more simply

[8] commit 745a254322c8 by Masahiro Yamada
  kbuild: use $(Q) for sub-make target

[9] commit aa55c8e2f7a3 by Masahiro Yamada
  kbuild: handle C=... and M=... after entering into build directory

[10] commit ab7474ea5361 by Borislav Petkov
  Kbuild: Ignore GREP_OPTIONS env variable

To use relative path feature, tools/Makefile and scripts/Makefile.autoconf
must be tweaked.

Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

This patch fix the kwimage tools for version 0 fileformat used for kirkwood
Tested on sheevaplug

Signed-off-by: Gerald Kerma <drEagle@doukki.net>
Tested-by: Stefan Roese <sr@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
Acked-By: Prafulla Wadaskar <prafulla@marvell.com>

In system boot chapter of i.MX6 reference manual, the "Image Vector Table"
figure shows the bootdata.start points to the beginning of the destination
memory. It means the bootdata.size should contain the IVT offset part,
but the calculation in imximage tool does not have.

We found this issue when booting from QuadSPI NOR on i.MX6SX. The u-boot
runs into abnormal (crash or stop) after booting. After checked the destination
memory where the image is loaded to, there are hundreds of bytes at
the image end are not loaded into memory. Since there is a 4096 bytes
round in the calculation, for the booting devices using smaller IVT offset,
such as SD and SPI booting, they are not easy to reproduce.

Signed-off-by: Ye.Li <B37916@freescale.com>

This patch fixes a compilation warning of kwbimage.c:

tools/kwbimage.c: In function ‘kwbimage_set_header’:
tools/kwbimage.c:784:8: warning: ‘headersz’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  memcpy(ptr, image, headersz);
        ^
Instead of using multiple if statements, use a switch statement with
a default entry. And return with error if an unsupported version
is configured in the cfg file.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-By: Wolfgang Denk <wd@denx.de>

kwbimage uses get_current_dir_name(3) which is a gnu extension and not
available on darwin host. Fix this by converting to portable getcwd(3)
function.

This patch fixes the following error:
---8<---
  HOSTCC  tools/kwbimage.o
tools/kwbimage.c:399:16: warning: implicit declaration of function 'get_current_dir_name' is invalid in C99 [-Wimplicit-function-declaration]
                        char *cwd = get_current_dir_name();
                                    ^
tools/kwbimage.c:399:10: warning: incompatible integer to pointer conversion initializing 'char *' with an expression of type 'int' [-Wint-conversion]
                        char *cwd = get_current_dir_name();
                              ^     ~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.
...
Undefined symbols for architecture x86_64:
  "_get_current_dir_name", referenced from:
      _image_headersz_v1 in kwbimage.o
ld: symbol(s) not found for architecture x86_64
--->8---

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Stefan Roese <sr@denx.de>
Acked-by: Stefan Roese <sr@denx.de>
[agust: fixed getcwd() return warning]
Signed-off-by: Anatolij Gustschin <agust@denx.de>

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>