ARM v7: Fix register corruption in v7_mmu_cache_off ...

v7_mmu_cache_flush stores registers on the stack and restores
them afterwards. Additionally v7_mmu_cache_flush is called
from v7_mmu_cache_off *after* disabling the MMU. With this
the following can happen:

- v7_mmu_cache_off disables the MMU. From now on no new values
  go to the data cache.
- v7_mmu_cache_off calls v7_mmu_cache_flush which in turn puts
  registers on the stack. Due to the MMU being disabled they
  do not go into the data cache.
- In v7_mmu_cache_flush the memory the stack is pointing to is
  overwritten with the values currently being in the cache.
- v7_mmu_cache_flush restores the registers from the stack with
  values from the cache and not the memory where the values have
  previously been written to.

Fix this by storing the registers on the stack *before* we disable
the MMU and restore them after we have called v7_mmu_cache_flush.
This way v7_mmu_cache_flush still restores corrupt register values
for the case when the MMU has been disabled, but we will restore
correct values afterwards.

This has been first observed when switching to gcc-4.7.2 when compiling
in Thumb2 mode, but could explain earlier problems also. The result
here was that the register holding the kernel address in start_linux()
was corrupted so that the kernel could not be started.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ohci: only enable drivers if ohci is enabled ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ohci: make it depends on !MMU ...

the current mmu support is broken

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Makefile: move cmd_check_file_size to Makefile.lib ...

so we can use to check pbl

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM Ka-Ro TX25: fix compilation with external NAND boot enabled ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM Ka-Ro TX25: fix running in SDRAM test ...

The end of SDRAM is at 0x9fffffff, not at 0x8fffffff. This fixes starting
barebox when it is located in the second SDRAM bank.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM i.MX25: Add missing device registration for the iomux ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd-core: fix compiler warning ...

Got this compile warning if MTD_WRITE support isn't set.

drivers/mtd/core.c: In function 'mtd_ioctl':
drivers/mtd/core.c:117:26: warning: unused variable 'ei' [-Wunused-variable]

Add a #ifdef to declaration of variable 'ei' to solve it.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

graphic_utils/fb_open: fix fbsize ...

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'delivery/at91_fixes' of git://git.jcrosoft.org/barebox

qt1070: init default key code first ...

So the key code provided by platform_data are not overwrited

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

atmel_spi: fix spi cs gpio request loop ...

it's 0 to num_cs - 1

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

at91sam9g45: fix i2c typos ...

arch/arm/mach-at91/at91sam9g45_devices.c: In function 'at91_add_device_i2c':
arch/arm/mach-at91/at91sam9g45_devices.c:158:42: error: 'pdata_i2c' undeclared (first use in this function)
arch/arm/mach-at91/at91sam9g45_devices.c:158:42: note: each undeclared identifier is reported only once for each function it appears in
arch/arm/mach-at91/at91sam9g45_devices.c:163:8: error: expected ':' or '...' before ';' token
arch/arm/mach-at91/at91sam9g45_devices.c:166:8: error: expected ':' or '...' before ';' token

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

at91: sam9x5ek: use -EINVAL for invalid gpio on 1-wire ...

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

ARM panda: do not set gpio direction of heartbeat LED ...

We now have gpio_request. When we call gpio_direction_output before
registering a led_gpio the gpio will be implicitely requested by the
gpio core. gpio_request in the led core will then fail resulting in
an unregistered LED.
Fix this by removing the call to gpio_direction_output. The LED core
will do this anyway.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: test for led->set callback before calling it ...

Registering a LED can fail. If someone calls led_set for such
a LED no set function will be there. Fail gracefully in this
case.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm-mmu: remove semicolon in arm mmu.c ...

Remove semicolon in PAGE_ALIGN macro.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

meminfo: fix display of allocated addresses ...

Fix display to stdout of allocated addresses.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

memory: fix size address calculation ...

Fix size address calculation.

Global variables from <asm/sections.h> which are defined
in linker script *.lds files for end addresses has already
a +1 calculation.

For example:
stext = 0x100 with a size about 0x50 will result a etext = 0x150.
In this case a correct size calculation is (etext - stext) = 0x50.

In function 'request_sdram_region' the end address will be
calculated with (start + size - 1) which result a correct
end address of 0x149 in this example.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

meminfo: fix missing include ...

Fix include for linkerscript variables like _etext.
Otherwise build with #define DEBUG will fail.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

w1: gpio: use int for gpio ...

so we can use negative value for invalid gpio

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

ARM am33xx: the hsmmc is a omap4 type mmc controller ...

The am33xx hsmmc controller is actually a omap4 type controller which
means that it has a 0x100 offset in the registers.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fixup! commands: add ubiformat ...

This adds the missing ubiformat.c file missing from:

commit 5a29d4a
Author: Wolfram Sang <w.sang@pengutronix.de>
Date:   Mon Dec 17 16:48:33 2012 +0100

    commands: add ubiformat

    Imported from mtd-utils and stripped down to needed functionality.
    Based on an older version (1.4.5.) since the newer do use MEMWRITE
    interfaces which we don't have in barebox (yet).

    Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
    Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/ubi'

Merge branch 'for-next/omap'

Merge branch 'for-next/mxs'

Merge branch 'for-next/misc'

Merge branch 'for-next/mips'

Merge branch 'for-next/imx'

Merge branch 'for-next/gpio-request'