Pull request: u-boot-arm/master

Hello Tom,

The following changes since commit 9c6b05cb724e18d1db3f9e1a75b2272572f06fbd:

Prepare v2015.07-rc3 (2015-06-29 17:22:01 -0400)

are available in the git repository at:

git://git.denx.de/u-boot-arm master

for you to fetch changes up to d6f9f69632754f03d064cc9b302c9e1552249258:

arm: dcc: Add uart dcc support for armv8 (2015-07-02 23:24:24 +0200)

----------------------------------------------------------------
Albert ARIBAUD (1):
Merge branch 'u-boot/master' into 'u-boot-arm/master'

Axel Lin (1):
gpio: lpc32xx: Use priv_data instead of platdata

Pavel Machek (1):
armv7: better comment in start.S

Simon Glass (2):
arm: Add ENTRY/ENDPROC to private libgcc functions Revert "break build if it would produce broken binary"

Siva Durga Prasad Paladugu (1):
arm: dcc: Add uart dcc support for armv8

Tom Rini (1):
arm: Enable CONFIG_USE_ARCH_MEMSET/MEMCPY globally

 arch/arm/cpu/armv7/start.S    |  7 +++----
 arch/arm/include/asm/u-boot.h |  4 ----
 arch/arm/lib/Makefile         |  4 ++--
 arch/arm/lib/_ashldi3.S       |  6 ++++--
 arch/arm/lib/_ashrdi3.S       |  6 ++++--
 arch/arm/lib/_divsi3.S        |  6 ++++--
 arch/arm/lib/_lshrdi3.S       |  6 ++++--
 arch/arm/lib/_modsi3.S        |  7 ++++---
 arch/arm/lib/_udivsi3.S       | 10 ++++++----
 arch/arm/lib/_umodsi3.S       |  6 ++++--
 arch/arm/lib/memcpy.S         |  2 +-
 arch/arm/lib/memset.S         |  2 +-
 drivers/gpio/lpc32xx_gpio.c   | 39 +++++++++++++++++++--------------------
 drivers/serial/arm_dcc.c      | 16 ++++++++++++++++
 examples/api/Makefile         |  3 ++-
 include/config_fallbacks.h    |  5 +++++
 16 files changed, 79 insertions(+), 50 deletions(-)

Amicalement,

Albert.

I see thumb related breakage on axm, taurus, and stm32f429-discovery now. We probably need the patch you posted that forces the right thumb mode on arch/arm/lib/mem{set,cpy}.S ?

Tom
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Hello Tom,

Sorry for missing that.

Commit ecaf902 ('arm: Enable CONFIG_USE_ARCH_MEMSET/MEMCPY globally') actually broke these boards, and I did not notice it from the buildman summary. The breaking occurs because of the following:

- taurus and its derivative axm are the only two Thumb-1-only targets which enable CONFIG_SYS_THUMB_BUILD (for their) SPL; but memset.S and memcpy.S can only assemble for ARM or Thumb-2, not Thumb-1.

- stm32f429-discovery is the only armV7-m / CPU_V7M (Thumb1 and Thumb2 only) target in U-boot... yet does not define CONFIG_SYS_THUMB_BUILD, which makes memset.S / memcpy.S assume that they should build for ARM, not Thumb2; the assembler correctly refuses that.

My thumb patch fixes taurus and axm as it prevents memset.S and memcpy.S from trying to assemble for Thumb-1, but does not fix stm32f429-discovery, for which the fix is to properly announce CONFIG_SYS_THUMB_BUILD in the config header file.

Sending v4 of my Thumb-1 patch ASAP.

Amicalement,

Albert.