hab/caam: Fix compilation of caam driver when hab is disabled ...

The caam driver needs the variable habv4_need_rng_software_self_test,
but this is only declared when HABV4 is enabled. Instead of exporting
a variable rather provide a function to test if a software selftest
of the random number generator is needed.

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

hab: habv4_need_rng_software_self_test is needed without hab support ...

habv4_need_rng_software_self_test

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

Merge branch 'for-next/warnings'

Merge branch 'for-next/usb-storage'

Merge branch 'for-next/stm32'

Merge branch 'for-next/pstore'

Merge branch 'for-next/net'

Merge branch 'for-next/misc'

Merge branch 'for-next/layerscape'

linux/kernel.h: split *_MAX and *_MIN macros into <linux/limits.h> ...

Copy include/linux/limits.h from Linux 5.1-rc1
(removing #include <uapi/linux/limits.h>).

While we are here, add SPDX License tag to <linux/kernel.h>.

Based on the following Linux commits:

 - 54d50897d544 ("linux/kernel.h: split *_MAX and *_MIN macros
   into <linux/limits.h>")

 - 2dc0e68d5ada ("linux/kernel.h: use 'short' to define USHRT_MAX,
   SHRT_MAX, SHRT_MIN")

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: twl-core: Add missing prototype for twlcore_get() ...

twlcore_get() has no prototype provided in header file. Add it.

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

pstore: Replace arguments for write() API ...

Similar to the pstore_info read() callback, there were too many arguments.
This switches to the new struct pstore_record pointer instead. This adds
"reason" and "part" to the record structure as well.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pstore: Replace arguments for read() API ...

The argument list for the pstore_read() interface is unwieldy. This changes
passes the new struct pstore_record instead. The erst backend was already
doing something similar internally.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pstore: Extract common arguments into structure ...

The read/mkfile pair pass the same arguments and should be cleared
between calls. Move to a structure and wipe it after every loop.

Signed-off-by: Kees Cook <keescook@chromium.org>
[p.zabel@pengutronix.de: ported to Barebox from Linux commit 9abdcccc3d5f]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pstore/ram: Clarify resource reservation labels ...

When ramoops reserved a memory region in the kernel, it had an unhelpful
label of "persistent ram". When reading iomem, it would be repeated many
times, did not hint that it was ramoops in particular, and didn't
clarify very much about what each was used for:

    0x4fdd4000 - 0x4fdf3fff (size 0x00020000) persistent ram
    0x4fdf4000 - 0x4fe13fff (size 0x00020000) persistent ram
    ...
    0x4ff74000 - 0x4ff93fff (size 0x00020000) persistent ram
    0x4ff94000 - 0x4ffb3fff (size 0x00020000) persistent ram
    0x4ffb4000 - 0x4ffd3fff (size 0x00020000) persistent ram

Instead, this adds meaningful labels for how the various regions are
being used:

    0x4fdd4000 - 0x4fdf3fff (size 0x00020000) ramoops:dump(0/12)
    0x4fdf4000 - 0x4fe13fff (size 0x00020000) ramoops:dump(1/12)
    ...
    0x4ff74000 - 0x4ff93fff (size 0x00020000) ramoops:console
    0x4ff94000 - 0x4ffb3fff (size 0x00020000) ramoops:ftrace
    0x4ffb4000 - 0x4ffd3fff (size 0x00020000) ramoops:pmsg

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
[p.zabel@pengutronix.de: ported to Barebox from Linux commit 1227daa43bce]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

pstore/ram: Do not use stack VLA for parity workspace ...

Instead of using a stack VLA for the parity workspace, preallocate a
memory region. The preallocation is done to keep from needing to perform
allocations during crash dump writing, etc. This also fixes a missed
release of librs on free.

Signed-off-by: Kees Cook <keescook@chromium.org>
[p.zabel@pengutronix.de: ported to Barebox from Linux commit f2531f1976d9]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: zii-common: add support for switch reset on RDU1 ...

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM: Add basic Layerscape support ...

This adds basic Layerscape support:

- Makefile/Kconfig
- Register maps
- errata workarounds

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

ddr: fsl: Add Freescale ddr driver ...

This adds the Freescale ddr driver used on various PowerPC and
Layerscape SoCs. This is based on U-Boot-2019.01 but with many
adjustments:

- PowerPC support has been removed
- CPP #ifdeffery replaced with C
- No more global variables/functions expected from the driver,
  configuration is passed by the board code which calls the driver

We already have the driver in the tree in an older version forked from
U-Boot-2013.04. This version lacks Layerscape support and many quirks
in the driver are PowerPC specific. Since the existing driver should
work on all known PowerPC and PowerPC is a dead end I decided not to
improve the existing driver and instead add a new Layerscape specific
driver.

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

net: Add Freescale FMan ethernet support ...

This adds ethernet support for the Freecale Layerscape SoCs. The
architecture in these SoCs is called "Data Path Acceleration
Architecture" (DPAA). It is comprised of:

- The Queue Manager (QMan)
- Buffer Manager (BMan)
- Frame Manager (FMan)
- Multirate Ethernet Media Access Controller (mEMAC)

The code is based on the corresponding U-Boot driver enriched with
device tree parsing and proper device driver support.

Tested on LS1046a, should work on other SoCs aswell with some minor
quirks. SerDes support has been removed for now.

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

Add Freescale QUICC Engine firmware support ...

The Freescale QUICC Engine found on Layerscape SoCs needs firmware
loaded. This adds support for loading such a firmware.

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

net: phy: Add register access helper functions for phys ...

Linux has phy helpers to access paged registers and to modify phy
registers. Add them to barebox for upcoming realtek phy support.

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

net: phy: Add PHY_ID_MATCH_* macros ...

Linux has some macros to describe matching phy ids to vendors and
models. Add them to barebox for upcoming realtek phy driver.

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

clk: mux: Support CLK_SET_RATE_NO_REPARENT flag ...

Since barebox doesn't do reparenting on rate changes we only have
to define the flag.

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

clk: mux: Support CLK_MUX_READ_ONLY flag ...

Support readonly dividers using the CLK_MUX_READ_ONLY flag.

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

clk: mux: Support mux specific flags ...

We'll need mux specific flags in the future, so add a parameter to
the mux initialization functions.

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

clk: divider: Support CLK_DIVIDER_READ_ONLY flag ...

To support a readonly divider add the CLK_DIVIDER_READ_ONLY flag.

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

clk: divider: pass divider flags ...

The generic clk divider needs clock flags and divider flags. Fix
prototypes to take both as separate arguments.

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

clk: Support CLK_IS_CRITICAL flag ...

Support CLK_IS_CRITICAL flag. Simply do not disable the clock even when
the enable count is zero.

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

clk: Make CLK_IGNORE_UNUSED generic ...

barebox will never disable unused clocks, so add CLK_IGNORE_UNUSED as a
no-op flag. With this we can keep the changes to the imported kernel
code smaller.

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