I've pushed the following patchset on top of the upstream:
The following changes since commit 5441f61a3d8b7034f19fc1361183e936198e6dbb: Detlev Zundel (1): Fix two typos.
are available in the git repository at:
git://www.denx.de/git/u-boot-mips.git testing
Shinya Kuribayashi (5): [MIPS] u-boot.lds: Remove duplicated .sdata section [MIPS] u-boot.lds: Fix __got_start and __got_end [MIPS] Fix $gp usage [MIPS] u-boot.lds: Define _gp in a standard manner [MIPS] Add PIC-related switches to PLATFORM_{CPP,LD}FLAGS and cleanup
board/dbau1x00/u-boot.lds | 14 +++++++------- board/gth2/u-boot.lds | 14 +++++++------- board/incaip/u-boot.lds | 14 +++++++------- board/pb1x00/u-boot.lds | 14 +++++++------- board/purple/u-boot.lds | 14 +++++++------- board/tb0229/u-boot.lds | 14 +++++++------- cpu/mips/config.mk | 4 +--- cpu/mips/start.S | 19 +++++++++++++------ examples/mips.lds | 14 +++++++------- mips_config.mk | 25 +++++++++++++++++++++++++ 10 files changed, 88 insertions(+), 58 deletions(-)
These patches mainly try to fix an outstanding mips bug:
http://article.gmane.org/gmane.comp.boot-loaders.u-boot/25533 http://article.gmane.org/gmane.comp.boot-loaders.u-boot/22160 http://article.gmane.org/gmane.comp.boot-loaders.u-boot/19550 http://article.gmane.org/gmane.comp.boot-loaders.u-boot/18887 http://article.gmane.org/gmane.comp.boot-loaders.u-boot/14935
As already discussed, the cause of this bug is a misalignment between __got_start and _GLOBAL_OFFSET_TABLE_. The __got_start misalignment makes num_got_entries larger than needed. As a result, we update GOT entries too many and corrupt top of the u_boot_cmd data. This will be fixed by __got_{start,end} cleanups in linker scripts.
In addition to fixing above, I've takan $gp usage fix suggested by Vlad, and cleaned up linker scripts, etc. Please review and give it a try.
thanks,
Shinya