As implemented now the timer used to implement __udelay counts
to 0xffffffff and then gets stuck there because the the programmed
reload value is 0xffffffff. This value is not only wrong but
illegal according to the reference manual.
One can reproduce the bug by leaving a board at the u-boot prompt
for sometime then issuing a sleep command. The sleep will hang
forever.
The timer is a count up timer that reloads as it rolls over
from 0xffffffff so the correct load value is 0.
Change TIMER_LOAD_VAL from 0xffffffff to 0 and introduce
a new constant called TIMER_OVERFLOW_VAL set to 0xffffffff.
Signed-off-by: John Rigby <john.rigby@linaro.org>
Tested-by: Igor Grinberg <grinberg@compulab.co.il>
Reuse the gd->tbl value for timestamp and add gd->lastinc for lastinc bss
values in the OMAP timer driver.
The usage of bss values in drivers before initialisation of bss is forbidden.
In that special case some data in .rel.dyn gets corrupted.
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Tested-by: Steve Sakoman <steve.sakoman@linaro.org>
Tested-by: John Rigby <john.rigby@linaro.org>
Tested-by: Nishanth Menon <nm@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Tested-by: Heiko Schocher <hs@denx.de>
Tested-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils. As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".
This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.
The name of each former library archive is preserved except for
extensions which change from ".a" to ".o". This commit updates
references accordingly where needed, in particular in some linker
scripts.
This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols. Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.
Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
The OMAP3 cpu directory contains a syslib file with some utilities
that can be shared by all targets using arm cortexa8 processors,
not only OMAP.
Signed-off-by: Stefano Babic <sbabic@denx.de>
Using the reset command on OMAP36XX/37XX and OMAP4 caused a hang. This
patch uses the reset bit appropriate for each CPU architecture.
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
The functions in syslib.c can be shared, so this patch moves it from
cpu/omap3 to cpu/omap-common
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
The OMAP4 x-load code sets gptimer1 clock source to 32Khz. This isn't
acceptable for udelay. This patch changes from gptimer1 to gptimer2,
which uses sys_clk at 38.4 Mhz.
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This patch adds minimum support for OMAP4. Code which can be shared
between OMAP3 and OMAP4 is placed in arch/arm/cpu/armv7/omap-common
Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
John Rigby
Dirk Behme
Sebastien Carlier
Stefano Babic
Steve Sakoman