Remove the useless code from start.S
Signed-off-by: NJason Liu <r64343@freescale.com>
Tested-by: NAndreas Bießmann <andreas.devel@googlemail.com>

Make code build with older tool chains.
Signed-off-by: NWolfgang Denk <wd@denx.de>

r8 is used for global_data and should therefore be left alone!

For C code the compiler flag --fixed-r8 does the job, but in assembler
we need to be aware of that fact.
Signed-off-by: NAndreas Bießmann <andreas.devel@googlemail.com>

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>

The start.S file was only half-rewritten for ELF relocations.
This bugfix completes the rewrite.
Signed-off-by: NAlbert Aribaud <albert.aribaud@free.fr>

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>

Fix relocation code for arm1176, do it like other ARM
CPU's are doing.
Tested only with CONFIG_SKIP_RELOCATE_UBOOT defined
and using nand_spl (booting from nand). Test done on
s3c6410 based board (not yet supported in main line).
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>

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>

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>

Change the implementation for arm1176 to relocate the code to
an arbitrary address in RAM.

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

The ARM ABI requires that the stack be aligned to 8 bytes as it is noted
in Procedure Call Standard for the ARM Architecture:
http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042d/index.html

Unaligned SP also causes the problem with variable-length arrays
allocation when VLA address becomes less than stack pointer during
aligning of this address, so the next 'push' in the stack overwrites
first 4 bytes of VLA.
Signed-off-by: NVitaly Kuzmichev <vkuzmichev@mvista.com>

Tested on tx25(mx25), imx27lite(mx27), qong(mx31) and trab(s3c2400)
Tested-by: NWolfgang Denk <wd@denx.de>

The ARM ABI requires that the stack be aligned to 8 bytes as it is noted
in Procedure Call Standard for the ARM Architecture:
http://infocenter.arm.com/help/topic/com.arm.doc.ihi0042d/index.html

Unaligned SP also causes the problem with variable-length arrays
allocation when VLA address becomes less than stack pointer during
aligning of this address, so the next 'push' in the stack overwrites
first 4 bytes of VLA.
Signed-off-by: NVitaly Kuzmichev <vkuzmichev@mvista.com>

The current ARM1176 CPU specific code is too specific to the SMDK6400
architecture.  The following changes were necessary prerequisites for the
addition of other SoCs based on ARM1176.

Existing board's (SMDK6400) configuration has been modified to keep behavior
unchanged despite these changes.

1. Peripheral port remap configurability
The earlier code had hardcoded remap values specific to s3c64xx in start.S.
This change makes the peripheral port remap addresses and sizes configurable.

2. U-Boot code relocation support
Most architectures allow u-boot code to run initially at a different
address (possibly in NOR) and then get relocated to its final resting place
in RAM.  Added support for this capability in ARM1176 architecture.

3. Disable TCM if necessary
If a ROM based bootloader happened to have initialized TCM, we disable it here
to keep things sane.

4. Remove unnecessary SoC specific includes
ARM1176 code does not really need this SoC specific include.  The presence
of this include prevents builds on other ARM1176 archs.

5. Modified virt-to-phys conversion during MMU disable
The original MMU disable code masks out too many bits from the load address
when it tries to figure out the physical address of the jump target label.
Consequently, it ends up branching to the wrong address after disabling the
MMU.
Signed-off-by: NCyril Chemparathy <cyril@ti.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

The current ARM1176 CPU specific code is too specific to the SMDK6400
architecture.  The following changes were necessary prerequisites for the
addition of other SoCs based on ARM1176.

Existing board's (SMDK6400) configuration has been modified to keep behavior
unchanged despite these changes.

1. Peripheral port remap configurability
The earlier code had hardcoded remap values specific to s3c64xx in start.S.
This change makes the peripheral port remap addresses and sizes configurable.

2. U-Boot code relocation support
Most architectures allow u-boot code to run initially at a different
address (possibly in NOR) and then get relocated to its final resting place
in RAM.  Added support for this capability in ARM1176 architecture.

3. Disable TCM if necessary
If a ROM based bootloader happened to have initialized TCM, we disable it here
to keep things sane.

4. Remove unnecessary SoC specific includes
ARM1176 code does not really need this SoC specific include.  The presence
of this include prevents builds on other ARM1176 archs.

5. Modified virt-to-phys conversion during MMU disable
The original MMU disable code masks out too many bits from the load address
when it tries to figure out the physical address of the jump target label.
Consequently, it ends up branching to the wrong address after disabling the
MMU.
Signed-off-by: NCyril Chemparathy <cyril@ti.com>
Signed-off-by: NSandeep Paulraj <s-paulraj@ti.com>

Signed-off-by: NPeter Tyser <ptyser@xes-inc.com>

The s3c6400.h file is only for S3C64XX cpu and the pheripheral port
address(0x70000000 - 0x7fffffff) exists at only S3C64XX cpu, so they
should be included by only S3C64XX cpu.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

The s3c6400.h file is only for S3C64XX cpu and the pheripheral port
address(0x70000000 - 0x7fffffff) exists at only S3C64XX cpu, so they
should be included by only S3C64XX cpu.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

The s3c6400.h file is only for S3C64XX cpu and the pheripheral port
address(0x70000000 - 0x7fffffff) exists at only S3C64XX cpu, so they
should be included by only S3C64XX cpu.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

Fix stack_setup to place the stack on the correct address in DRAM
accroding to U-Boot standard and remove conditional compilation by
CONFIG_MEMORY_UPPER_CODE macro that is not necessry. This macro
was introduced and used only by this board for some unclear reason.

The definition of this macro is also removed because it's not
referenced elsewhere.
Signed-off-by: NSeunghyeon Rhee <seunghyeon@lpmtec.com>
Tested-by: NMinkyu Kang <mk7.kang@samsung.com>

This patch moves the s3c64xx header files from include/
to include/asm-arm/arch-s3c64xx
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

Fix stack_setup to place the stack on the correct address in DRAM
accroding to U-Boot standard and remove conditional compilation by
CONFIG_MEMORY_UPPER_CODE macro that is not necessry. This macro
was introduced and used only by this board for some unclear reason.

The definition of this macro is also removed because it's not
referenced elsewhere.
Signed-off-by: NSeunghyeon Rhee <seunghyeon@lpmtec.com>
Tested-by: NMinkyu Kang <mk7.kang@samsung.com>

This patch moves the s3c64xx header files from include/
to include/asm-arm/arch-s3c64xx
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

Signed-off-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

Based on the original S3C64XX port by Samsung for U-Boot 1.1.6.
Signed-off-by: NGuennadi Liakhovetski <lg@denx.de>