u-boot.git/arch/arm/lib, branch v2016.07

ARM: move #ifdef to match the error handling code

2016-06-24T21:23:13+00:00

Match the #ifdef ... #endif and the code,

   ret = do_something();
   if (ret)
           return ret;

This will make it easier to add more #ifdef'ed code.

Signed-off-by: Masahiro Yamada

arm/arm64: implement a boot header capability

2016-06-06T17:39:19+00:00

Some SPL loaders (like Allwinner's boot0, and Broadcom's boot0)
require a header before the actual U-Boot binary to both check its
validity and to find other data to load. Sometimes this header may
only be a few bytes of information, and sometimes this might simply
be space that needs to be reserved for a post-processing tool.

Introduce a config option to allow assembler preprocessor commands
to be inserted into the code at the appropriate location; typical
assembler preprocessor commands might be:
  .space 1000
  .word 0x12345678

Signed-off-by: Andre Przywara 
Signed-off-by: Steve Rae 
Commit Notes:
Please note that the current code:
  start.S (arm64) and
  vectors.S (arm)
already jumps over some portion of data already, so this option basically
just increases the size of this region (and the resulting binary).

For use with Allwinner's boot0 blob there is a tool called boot0img[1],
which fills the header to allow booting A64 based boards.
For the Pine64 we need a 1536 byte header (including the branch
instruction) at the moment, so we add this to the defconfig.

[1] https://github.com/apritzel/pine64/tree/master/tools
END
Reviewed-by: Tom Rini

arm: lib: Fix fix push/pop-section directives

2016-06-04T23:25:14+00:00

Repair typos in the previous "arm: lib: fix push/pop-section directives"
patch, which prevented VCMA9 board from building.

Signed-off-by: Marek Vasut 
Fixes: b2f1858455e9 ("arm: lib: fix push/pop-section directives")
Cc: Tom Warren 
Cc: Simon Glass 
Cc: Masahiro Yamada 
Cc: Stephen Warren

arm: lib: fix push/pop-section directives

2016-06-03T19:14:11+00:00

With the existing code, function symbols are defined in .text, and the
body is defined in .text.xxx. This causes (at least some version of) the
linker not to emit the function body into the final binary, since it's
part of a different section to the symbols being referenced. This of
course causes a wide variety of failures.

This change moves the push/pop-section directives before the function
symbols, and after any relate ENDPROC macro invocations, so that symbols
and bodies are all in the "pushed" sections, and thus the function bodies
are emitted into the binary.

This solves (at least) the boot problems currently seen on Tegra systems
that use SPL (i.e. all ARMv7 Tegras).

Fixes: 13b0a91a6d48 ("arm: lib: Split asm symbols into different .text subsections")
Cc: Marek Vasut 
Cc: Tom Warren 
Cc: Simon Glass 
Cc: Masahiro Yamada 
Signed-off-by: Stephen Warren

arm: lib: Split asm symbols into different .text subsections

2016-06-03T01:21:47+00:00

Split each symbol in lib1funcs into different .text.foo section instead
of placing all of them into plain .text . This allows the linker to collect
and discard unused assembler symbols.

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini

arm: lib: Import Thumb1 functions

2016-06-03T01:21:47+00:00

Import functions into lib1funcs.S which are required for Thumb1
build. These functions come from gcc 5.3.1 release.

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini

arm: lib: import muldi3.S from Linux

2016-06-03T01:21:46+00:00

Import muldi3.S from Linux 4.4.6 , commit 0d1912303e54ed1b2a371be0bba51c384dd57326
on arm32. This file implements __aeabi_lmul and it's alias __muldi3, which
is needed when doing Thumb1 builds.

This patch also defines CONFIG_THUMB2_KERNEL and CONFIG_ARM_ASM_UNIFIED
which is necessary for correct build of these files both in ARM and
Thumb mode, just like Linux does.

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini

arm: lib: Repair Warning: conditional infixes are deprecated in unified syntax

2016-06-03T01:21:46+00:00

Fix the following warning when building for thumb2 target by tweaking the
instruction syntax:

Warning: conditional infixes are deprecated in unified syntax

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini

arm: lib: Import __do_div64 from Linux

2016-06-03T01:21:45+00:00

Import __do_div64 from Linux 4.4.6 , commit 0d1912303e54ed1b2a371be0bba51c384dd57326
on arm32. This function is for some toolchains, which generate _udivmoddi4()
for 64 bit division.

Since we do not support stack unwinding, instead of importing the whole
asm/unwind.h and all the baggage, this patch defines empty UNWIND() macro.

This patch also defines CONFIG_THUMB2_KERNEL and CONFIG_ARM_ASM_UNIFIED
which is necessary for correct build of these files both in ARM and
Thumb mode, just like Linux does.

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini

arm: lib: Fix uldivmod.S build on Thumb2

2016-06-03T01:21:45+00:00

This assembler source won't build in Thumb2 mode, so fix it adding
the necessary Thumb2 conditional macros from unified.h .

This patch also defines CONFIG_THUMB2_KERNEL and CONFIG_ARM_ASM_UNIFIED
which is necessary for correct build of these files both in ARM and
Thumb mode, just like Linux does.

Signed-off-by: Marek Vasut 
Cc: Albert Aribaud 
Cc: Masahiro Yamada 
Cc: Simon Glass 
Cc: Tom Rini 
Reviewed-by: Tom Rini