In case we are still at relocation target address before relocation we
do not need to load the registers needed for relocation. We should
instead skip the whole relocation part and jump over to clear_bss
immediately.
Signed-off-by: NAndreas Bießmann <andreas.devel@googlemail.com>

This patch uses r1 as scratch register for copy_loop(). Therefore we do
not longer need r7 for the storage of relocate_code()'s 'addr_moni' (the
destination address of relocation).
Therefore r7 can be used later on for other purposes.
Signed-off-by: NAndreas Bießmann <andreas.devel@googlemail.com>

suggested from Daniel Hobi<daniel.hobi@schmid-telecom.ch>

Tested on following boards:
arm1136: qong
armv7: omap3_beagle
arm926ejs: magnesium, tx25
Signed-off-by: NHeiko Schocher <hs@denx.de>
cc: Daniel Hobi <daniel.hobi@schmid-telecom.ch>
cc: Albert ARIBAUD <albert.aribaud@free.fr>

This patch fixes build errors in the vexpress system:
  - Removed sys_proto.h requirement from syslib.c.
  - Switched vexpress to the default armv7 linker script.
  - Renamed TEXT_BASE to CONFIG_SYS_TEXT_BASE.
Signed-off-by: NMatt Waddel <matt.waddel@linaro.org>

Because of count_value is set to tcnb4 register,
should be get from this register when call udelay function.
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

With addition of "dram_init_banksize()" function from Heiko,Schocher
(commit ID: 561142af), the DRAM size
is getting configured wrongly to 512Mb (CS0 & CS1).
So fix it to 256Mb.
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

DECLARE_GLOBAL_DATA_PTR is currently defined within the scope
of function while it is a global pointer. Change the scope of
definition to replicate it's global scope. This seems to help
gcc 4.5 optimizations as well.
Signed-off-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NSandeep 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: NSebastien Carlier <sebastien.carlier@gmail.com>

older ld emitted all ELF relocations in input sections named
.rel.dyn, whereas newer ld uses names of the form .rel*. The
linker script only collected .rel.dyn input sections. Rewrite
to collect all .rel* input sections.
Signed-off-by: NAlbert Aribaud <albert.aribaud@free.fr>

since commit 3667cbee
on beagle board the second sdram bank didn;t longer
work. Since this patch sdram settings just get copied
from bank a, but CMD_NOP, CMD_PRECHARGE, CMD_AUTOREFRESH
are not executed and after that mr register is also
not updated. This patch adds this for the bank b.
Signed-off-by: NHeiko Schocher <hs@denx.de>
cc: Steve Sakoman <steve@sakoman.com>
cc: Sandeep Paulraj <s-paulraj@ti.com>
cc: Wolfgang Denk <wd@denx.de>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

For ARM systems, before ELF relocation was introduced,
CONFIG_SKIP_RELOCATE_UBOOT coul be used to prevent *COPYING* the
U-Boot image from whereever it was loaded to it's link address
(CONFIG_SYS_TEXT_BASE).  The name was badly chosen, as no relocation
was performed at all, it was just a memcpy().

With ELF relocation, this does not work like that any more, and
related boards need to be fixed anyway.  So don't keep this relict any
longer.
Signed-off-by: NWolfgang Denk <wd@denx.de>
Tested-by: NHeiko Schocher <hs@denx.de>
Tested-by: NReinhard Meyer <u-boot@emk-elektronik.de>

When this define was introduced, the idea was to provide a soft
migration path for ARM boards to get adapted to the new relocation
support.  However, other recent changes led to a different
implementation (ELF relocation), where this no longer works.  By now
CONFIG_SYS_ARM_WITHOUT_RELOC does not only not help any more, but it
actually hurts because it obfuscates the actual code by sprinkling it
with lots of dead and non-working debris.

So let's make a clean cut and drop CONFIG_SYS_ARM_WITHOUT_RELOC.
Signed-off-by: NWolfgang Denk <wd@denx.de>
Tested-by: NHeiko Schocher <hs@denx.de>
Tested-by: NReinhard Meyer <u-boot@emk-elektronik.de>

The patch removes the warning:

clock.c:291: warning: initialization from incompatible pointer type

after  constification of args[]
Signed-off-by: NStefano Babic <sbabic@denx.de>

Remove u-boot.lds from mx5 and use the common u-boot.lds
of cpu layer. This patch also fix the building errors:

arch/arm/cpu/armv7/start.o: In function `_rel_dyn_start_ofs':
arch/arm/cpu/armv7/start.S:283: undefined reference to `__rel_dyn_start'
arch/arm/cpu/armv7/start.o: In function `_rel_dyn_end_ofs':
arch/arm/cpu/armv7/start.S:283: undefined reference to `__rel_dyn_end'
arch/arm/cpu/armv7/start.o: In function `_dynsym_start_ofs':
arch/arm/cpu/armv7/start.S:283: undefined reference to `__dynsym_start'
Signed-off-by: NJason Liu <r64343@freescale.com>

Fix address setup bug for ARM.
This bug stops u-boot booting if
CONFIG_SKIP_RELOCATE_UBOOT is defined.
Signed-off-by: NDarius Augulis <augulis.darius@gmail.com>

CONFIG_SYS_GBL_DATA_SIZE has always been just a bad workarond for not
being able to use "sizeof(struct global_data)" in assembler files.
Recent experience has shown that manual synchronization is not
reliable enough.  This patch renames CONFIG_SYS_GBL_DATA_SIZE into
GENERATED_GBL_DATA_SIZE which gets automatically generated by the
asm-offsets tool.  In the result, all definitions of this value can be
deleted from the board config files.  We have to make sure that all
files that reference such data include the new <asm-offsets.h> file.

No other changes have been done yet, but it is obvious that similar
changes / simplifications can be done for other, related macro
definitions as well.
Signed-off-by: NWolfgang Denk <wd@denx.de>
Acked-by: NKumar Gala <galak@kernel.crashing.org>

Signed-off-by: NGray Remlin <g_remlin@rocketmail.com>
Acked-by: NHeiko Schocher <hs@denx.de>

This code section is dead due to we never define
ENABLE_IMPRECISE_ABORT for MX5
Signed-off-by: NJason Liu <r64343@freescale.com>

The change is currently needed to be able to remove the board
configuration scripting from the top level Makefile and replace it by
a simple, table driven script.

Moving this configuration setting into the "CONFIG_*" name space is
also desirable because it is needed if we ever should move forward to
a Kconfig driven configuration system.
Signed-off-by: NWolfgang Denk <wd@denx.de>

Rename mx51 to mx5 in order to support more mx51
like-style SOCs such as MX53 and the followings.
Signed-off-by: NJason Liu <r64343@freescale.com>

This patch fixes the build breakage introduced by the recent relocation
changes for ARMV7
Signed-off-by: NSteve Sakoman <steve@sakoman.com>

This patch fixes a typo in the routine to calculate the cs offset
based upon the contents of the SDRC cs_cfg register.  This function
mistakenly shifts the CS1STARTLOW field 17 bits right instead of
17 bits left.

This hasn't been an issue to date because all OMAP3 boards currently
are configured to have zeros in this field.
Reported-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NSteve Sakoman <steve.sakoman@linaro.org>

Signed-off-by: NHeiko Schocher <hs@denx.de>

Generalized misuse of ble within relocation and bss
initialization loops caused one iteration too many.
Instead of ble ('branch if lower or equal'), use
blo ('branch if lower').

While we're at it, fix all 'addreee' typos.
Signed-off-by: NAlbert Aribaud <albert.aribaud@free.fr>

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: NStefano Babic <sbabic@denx.de>

Calculate the SDRAM size from DMM configuration registers instead of using
hard-coded values. This gives correct values for all different boards.

It's assumed that DMM sections do not overlap memory areas.
Signed-off-by: NAneesh V <aneesh@ti.com>
Tested-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

Change the implementation for ARM V7 to relocate the code to an
arbitrary address in RAM.

Adapt the Beagle board (Cortex A8) to test the changes.

Portions of this work were supported by funding from
the CE Linux Forum.
Signed-off-by: NHeiko Schocher <hs@denx.de>

Add data cache support for ARM V7 systems. Used cache flush
functions from linux:arch/arm/mm/cache-v7.S developed from
Catalin Marinas.

Enable "cache" command on Beagle board and test performance.

    Test 1: Loading 127 MB of data from NAND flash into RAM:

    Instr. Cache	off	on	on
      Data Cache	off	off	on
    --------------------------------------------------
    Beagle (Cortex A8)	116s	106s	30.3s	= x 3.8

    Test 2: uncompressing a gzipped image from RAM to RAM
            (size compressed: 6.5 MiB, uncompressed: 35 MiB):

    Instr. Cache	off	on	on
      Data Cache	off	off	on
    --------------------------------------------------
    Beagle (Cortex A8)	1.84s	1.64s	0.12s	= x 15.3

Portions of this work were supported by funding from
the CE Linux Forum.
Signed-off-by: NHeiko Schocher <hs@denx.de>
Reviewed-by: Ben Gardiner<bengardiner@nanometrics.ca>

Coding style cleanup.
Signed-off-by: NWolfgang Denk <wd@denx.de>

Upcoming Beagle and Overo revisions use POP memory with 256MB or 512MB
per bank.  This patches uses the SDRC settings from x-load or the config
header to set up timing properly.
Signed-off-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

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: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

The workarounds for errata 621766 and 725233 should only be applied
on affected Cortex-A8 revisions.  Recent chips use r3px cores where
these have been fixed.
Signed-off-by: NMans Rullgard <mans@mansr.com>
Signed-off-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

This function consists entirely of inline asm statements, so writing
it directly in a .S file is simpler. Additionally, the inline asm is
not safe as is, since registers are not guaranteed to be preserved
between asm() statements.
Signed-off-by: NMans Rullgard <mans@mansr.com>
Signed-off-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

On OMAP34xx ES1.0, the L2 enable bit can only be set in secure mode,
so an SMC call to the ROM monitor is required.  On later versions,
and on newer devices, this bit is banked and we can set it directly.

The code checked only the ES revision of the chip, and hence incorrectly
used the ROM call on ES1.0 versions of other devices.

This patch adds a check for chip family as well as revision, and also
removes some code duplication between the enable and disable functions.
Signed-off-by: NMans Rullgard <mans@mansr.com>
Signed-off-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

This patch configures clocks properly when a 36XX/37XX
processor is detected.
Signed-off-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

TI has added new processors to the OMAP3 family.  This patch enhances
the code in sysinfo.c to detect which family member is present.
Signed-off-by: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep 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: NSteve Sakoman <steve@sakoman.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

Because of peripheral devices can select clock sources,
separate the peripheral clocks. (pwm, uart and so on)
It just return the pclk at s5pc1xx SoC,
but s5pc210 SoC must be calculated by own clock register setting.
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

Because of these are common files around s5p Socs, rename from s5pc1xx to s5p.
And getting cpu_id is SoC specific, so move to SoC's header file.
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

This patch adds basic support for s5pc210.
s5p-common will be used by all of s5p SoCs.
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>