linux-toradex.git/arch/mips/boot, branch v4.9.100

MIPS: dts: remove bogus bcm96358nb4ser.dtb from dtb-y entry

2017-11-30T08:39:03+00:00

commit 3cad14d56adbf7d621fc5a35db42f3acc0a2d6e8 upstream.

arch/mips/boot/dts/brcm/bcm96358nb4ser.dts does not exist, so
we cannot build bcm96358nb4ser.dtb .

Signed-off-by: Masahiro Yamada 
Fixes: 695835511f96 ("MIPS: BMIPS: rename bcm96358nb4ser to bcm6358-neufbox4-sercom")
Acked-by: James Hogan 
Signed-off-by: Rob Herring 
Signed-off-by: Greg Kroah-Hartman

MIPS: .its targets depend on vmlinux

2017-06-24T05:11:17+00:00

commit bcd7c45e0d5a82be9a64b90050f0e09d41a50758 upstream.

The .its targets require information about the kernel binary, such as
its entry point, which is extracted from the vmlinux ELF. We therefore
require that the ELF is built before the .its files are generated.
Declare this requirement in the Makefile such that make will ensure this
is always the case, otherwise in corner cases we can hit issues as the
.its is generated with an incorrect (either invalid or stale) entry
point.

Signed-off-by: Paul Burton 
Fixes: cf2a5e0bb4c6 ("MIPS: Support generating Flattened Image Trees (.itb)")
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16179/
Signed-off-by: Ralf Baechle 
Signed-off-by: Greg Kroah-Hartman

MIPS: Malta: Fixup reboot

2016-11-03T23:27:27+00:00

Commit 10b6ea0959de ("MIPS: Malta: Use syscon-reboot driver to reboot")
converted the Malta board to use the generic syscon-reboot driver to
handle reboots, but incorrectly used the value 0x4d rather than 0x42 as
the magic to write to the reboot register.

I also incorrectly believed that syscon/regmap would default to native
endianness, but this isn't the case. Force this by specifying with a
native-endian property in the devicetree.

Signed-off-by: Paul Burton 
Fixes: 10b6ea0959de ("MIPS: Malta: Use syscon-reboot driver to reboot")
Reported-by: Guenter Roeck 
Cc: linux-mips@linux-mips.org
Tested-by: Guenter Roeck 
Tested-by: Maciej W. Rozycki 
Patchwork: https://patchwork.linux-mips.org/patch/14396/
Signed-off-by: Ralf Baechle

MIPS: generic: Convert SEAD-3 to a generic board

2016-10-06T16:04:20+00:00

Convert the MIPS SEAD-3 board support to be a generic board, supported
by generic kernels.

Because the SEAD-3 boot protocol was defined long ago and we don't want
to force a switch to the UHI protocol, SEAD-3 is added as a legacy board
which is detected by reading the REVISION register. This may technically
not be a valid memory read & future work will include attempting to
handle that gracefully. In practice since SEAD-3 is the only legacy
board supported by the generic kernel so far the read will only happen
on SEAD-3 boards, and even once Malta is converted the same REVISION
register exists there too. Other boards such as Boston, Ci20 & Ci40 will
use the UHI boot protocol & thus not run any of the legacy board detect
functions.

Signed-off-by: Paul Burton 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14354/
Signed-off-by: Ralf Baechle

MIPS: generic: Introduce generic DT-based board support

2016-10-06T16:04:04+00:00

Introduce a "generic" platform, which aims to be board-agnostic by
making use of device trees passed by the boot protocol defined in the
MIPS UHI (Universal Hosting Interface) specification. Provision is made
for supporting boards which use a legacy boot protocol that can't be
changed, but adding support for such boards or any others is left to
followon patches.

Right now the built kernels expect to be loaded to 0x80100000, ie. in
kseg0. This is fine for the vast majority of MIPS platforms, but
nevertheless it would be good to remove this limitation in the future by
mapping the kernel via the TLB such that it can be loaded anywhere & map
itself appropriately.

Configuration is handled by dynamically generating configs using
scripts/kconfig/merge_config.sh, somewhat similar to the way powerpc
makes use of it. This allows for variations upon the configuration, eg.
differing architecture revisions or subsets of driver support for
differing boards, to be handled without having a large number of
defconfig files.

Signed-off-by: Paul Burton 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14353/
Signed-off-by: Ralf Baechle

MIPS: Support generating Flattened Image Trees (.itb)

2016-10-06T16:03:10+00:00

Add support for generating kernel images in the Flattened Image Tree
(.itb) format as supported by U-Boot. This format is essentially a
Flattened Device Tree binary containing images (kernels, DTBs, ramdisks)
and configurations which link those images together. The big advantages
of FIT images over the uImage format are:

  - We can include FDTs in the kernel image in a way that the bootloader
    can extract it & manipulate it before providing it to the kernel.
    Thus we can ship FDTs as part of the kernel giving us the advantages
    of being able to develop & maintain the DT within the kernel tree,
    but also have the benefits of the bootloader being able to
    manipulate the FDT. Example uses for this would be to inject the
    kernel command line into the chosen node, or to fill in the correct
    memory size.

  - We can include multiple configurations in a single kernel image.
    This means that a single FIT image can, given appropriate
    bootloaders, be booted on different boards with the bootloader
    selecting an appropriate configuration & providing the correct FDT
    to the kernel.

  - We can support a multitude of hashes over the data.

Signed-off-by: Paul Burton 
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14352/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: Use interrupt-controller node name

2016-10-06T15:31:02+00:00

Changes node names of the interrupt-controller device nodes to
interrupt-controller instead of label strings.

Signed-off-by: Jaedon Shin 
Cc: Florian Fainelli 
Cc: Jonas Gorski 
Cc: Kevin Cernekee 
Cc: Rob Herring 
Cc: MIPS Mailing List 
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14004/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: Add support NAND device nodes

2016-10-06T15:31:02+00:00

Adds NAND device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin 
Cc: Florian Fainelli 
Cc: Jonas Gorski 
Cc: Kevin Cernekee 
Cc: Rob Herring 
Cc: MIPS Mailing List 
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14003/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: Add support SDHCI device nodes

2016-10-06T15:31:02+00:00

Adds SDHCI device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin 
Reviewed-by: Florian Fainelli 
Cc: Jonas Gorski 
Cc: Kevin Cernekee 
Cc: Rob Herring 
Cc: MIPS Mailing List 
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14002/
Signed-off-by: Ralf Baechle

MIPS: BMIPS: Add support GPIO device nodes

2016-10-06T15:31:02+00:00

Adds GPIO device nodes to BCM7xxx MIPS based SoCs.

Signed-off-by: Jaedon Shin 
Cc: Florian Fainelli 
Cc: Jonas Gorski 
Cc: Kevin Cernekee 
Cc: Rob Herring 
Cc: MIPS Mailing List 
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/14001/
Signed-off-by: Ralf Baechle