Merge branch 'for-next/rsa'

MIPS: net: ag71xx/ar9331: partially sync network support with upstream ...

Ethernet support for ar9331 is upstream now. So, drop every thing what
is provided by upstream devicetree and rename compatible in the driver.

barebox network driver will need more work to be upstream compliant. For
example we should not request or touch the gmac register directly. Since
currently it is not clear how this should be implemented, patch the
upstream dts with reg-names = "ge0", "gmac".

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lds: Add and use RO_DATA_SECTION macro ...

We have many different pointer arrays which we put into linker sections
and each time there's one added we have to adjust all linker scripts.
This adds a common RO_DATA_SECTION define and uses it for all
architectures. This makes it easier to add a new linker array.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lds: create and use BAREBOX_PCI_FIXUP macro ...

No need to repeat the pci fixup sections in each linker script. Add a
define for it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

lds: Move start/end address variables into defines ...

For the older section defines we specify the start and end addresses
outside the macro which means we have to repeat them in each linker
script. Make the start/end addresses part of the define to simplify
things. While at it, add a BAREBOX_ prefix to the INITCALLS and EXITCALLS
macros for consistency to the other defines.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>

barebox.lds: Remove unnecessary braces ...

The BAREBOX_CLK_TABLE and BAREBOX_DTB macros are defines that do not
take a parameter, so we can remove the braces.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

Merge branch 'for-next/mips'

mips: bootm: Cast elf entry into unsigned long ...

Since elf entry type is now a u64 to accomodate both type of elf files
(64 and 32 bits), we need to cast it to the pointer length before
casting it to the pointer type.

Signed-off-by: Clement Leger <cleger@kalray.eu>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Kconfig: retire empty <asm/barebox.h> ...

With the latest changes, this file is empty on all archs. Drop it.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Kconfig: create Kconfig symbol for ARCH_HAS_DATA_ABORT_MASK ...

Other arch-specific features are exposed in Kconfig too, so do here
likewise.

Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: ath79: enable gpio key support. ...

Most of ath79 devices have at least one gpio key.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: dts: dpt-module: fix gpio button ...

GPIO11 is set to 0 by default and there is no internal pull ups
to set a different configuration. To fix the system with gpio-key
activated we need to fix devicetree first.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: ath79: enable watchdog support ...

all ath79 based SoCs have watchdog. Make sure, it can be used.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mips: use generic bitsperlong.h ...

Linux highly depends on the fact that the 'long' and the pointer
have the same width, and so does barebox.

So, we can always use include/asm-generic/bitsperlong.h, which
determines BITS_PER_LONG depending on CONFIG_64BIT.

This is what Linux does (at least in the kernel-space), and barebox
can follow it.

It is true that MIPS Linux references _MIPS_SZLONG
(arch/mips/include/uaspi/asm/bitsperlong.h), but this is bacause
the user-space cannot reference CONFIG options. For the kernel-space,
it uses the generic definition from include/asm-generic/bitsperlong.h.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

mips: reloc: remove outdated comment ...

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Regenerate defconfig files ...

Update defconfig files with the following script.

for a in arch/*; do
	arch=$(basename $a)
	for c in $a/configs/*; do
		config=$(basename $c)

	export ARCH=$arch
	make $config && make savedefconfig && mv defconfig $c
	done
done

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: dts: tplink-mr3020: add missing stdout-path property ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: Kconfig: move ARCH_TEXT_BASE to top mips Kconfig file ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: relocate_code: fix barebox image memcpy() size ...

In this relocate_code() piece 'length' is greater than 'barebox_image_size':

    #define MAX_BSS_SIZE SZ_1M
    ...
    length = barebox_image_size + MAX_BSS_SIZE;
    relocaddr = ALIGN_DOWN(ram_size - barebox_image_size, SZ_64K);
    ...
    memcpy((void *)relocaddr, __image_start, length);

so 'ram_size' overflow occurs during memcpy().

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Tested-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: lib/Makefile: fix whitespaces ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: fix 'assignment makes integer from pointer without a cast' warning ...

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: use anonymous labels in ENTRY_FUNCTION_END and STOP_WITH_DEBUG_EVENT macros ...

Use of global labels of the same name inside ENTRY_FUNCTION_END and
STOP_WITH_DEBUG_EVENT prevents simultaneous use of both macros. It also
prevents multiple use of one of them.

Signed-off-by: Peter Mamonov <pmamonov@gmail.com>
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: replace '---help---' with 'help' in Kconfig files ...

In Linux, '---help---' was deprecated in favor of 'help', and
this is checked by the recent checkpatch.pl

See Linux commit 84af7a6

The number of '---help---' is gradually decreasing in Linux, but there
are still lots. However, '---help---' will be completely killed when
the time comes.

Fortunately, there are only some in Barebox. Replacing them is not hard.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch: add KBUILD_DEFCONFIG to allow "make defconfig" ...

Currently, "make defconfig" is only supported for sandbox and x86.

I set KBUILD_DEFCONFIG to support "make defconfig" where I was able
to find a suitable one.

nios2 and openrisc have a single generic_defconfig, so it is definitely
good for KBUILD_DEFCONFIG.

For arm, mips, I assume qemu is a preferred choice over a real board.

blackfin has only one defconfig. Since it is inactive (it is gone in
Linux), so no more defconfig will come in.

I am not sure about ppc and riscv, so I did not touch them.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: remove request_sdram_region "fdt" ...

It is actually not needed at barebox runtime

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: relocation: do not use configurable memory layout ...

The relocator is not able to patch properly new location of
the stack. To make it work properly it is better to disable
HAVE_CONFIGURABLE_MEMORY_LAYOUT.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: relocation: add relocation support ...

this patch i a port of following patch from u-boot with some additional
integration changes and fixes of original code:
| Subject: [PATCH] MIPS: Stop building position independent code
|
| U-Boot has up until now built with -fpic for the MIPS architecture,
| producing position independent code which uses indirection through a
| global offset table, making relocation fairly straightforward as it
| simply involves patching up GOT entries.
|
| Using -fpic does however have some downsides. The biggest of these is
| that generated code is bloated in various ways. For example, function
| calls are indirected through the GOT & the t9 register:
|
|   8f998064   lw     t9,-32668(gp)
|   0320f809   jalr   t9
|
| Without -fpic the call is simply:
|
|   0f803f01   jal    be00fc04 <puts>
|
| This is more compact & faster (due to the lack of the load & the
| dependency the jump has on its result). It is also easier to read &
| debug because the disassembly shows what function is being called,
| rather than just an offset from gp which would then have to be looked up
| in the ELF to discover the target function.
|
| Another disadvantage of -fpic is that each function begins with a
| sequence to calculate the value of the gp register, for example:
|
|   3c1c0004   lui    gp,0x4
|   279c3384   addiu  gp,gp,13188
|   0399e021   addu   gp,gp,t9
|
| Without using -fpic this sequence no longer appears at the start of each
| function, reducing code size considerably.
|
| This patch switches U-Boot from building with -fpic to building with
| -fno-pic, in order to gain the benefits described above. The cost of
| this is an extra step during the build process to extract relocation
| data from the ELF & write it into a new .rel section in a compact
| format, plus the added complexity of dealing with multiple types of
| relocation rather than the single type that applied to the GOT. The
| benefit is smaller, cleaner, more debuggable code. The relocate_code()
| function is reimplemented in C to handle the new relocation scheme,
| which also makes it easier to read & debug.
|
| Taking maltael_defconfig as an example the size of u-boot.bin built
| using the Codescape MIPS 2016.05-06 toolchain (gcc 4.9.2, binutils
| 2.24.90) shrinks from 254KiB to 224KiB.
|
| Signed-off-by: Paul Burton <paul.burton@imgtec.com>

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MIPS: relocation: pass ram size to pbl_main_entry ...

To make barebox dynamically relocatable it should know
the RAM size to be able to calculate proper new location.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>