Import a copy of the dt-bindings/interrupt-controller/mips-gic.h header
from Linux, such that we can use device trees which include it without
modification.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Thu, 8 Sep 2016 06:47:29 +0000 (07:47 +0100)]
serial: ns16550: Support clocks via phandle
Previously ns16550 compatible UARTs probed via device tree have needed
their device tree nodes to contain a clock-frequency property. An
alternative to this commonly used with Linux is to reference a clock via
a phandle. This patch allows U-Boot to support that, retrieving the
clock frequency by probing the appropriate clock device.
For example, a system might choose to provide the UART base clock as a
reference to a clock common to multiple devices:
This removes the need for the frequency information to be duplicated in
multiple nodes and allows the device tree to be more descriptive of the
system.
Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Paul Burton [Thu, 8 Sep 2016 06:47:28 +0000 (07:47 +0100)]
clk: Use dummy clk_get_by_* functions when CONFIG_CLK is disabled
The implementations of clk_get_by_index & clk_get_by_name are only
available when CONFIG_CLK is enabled. Provide the dummies when this is
not the case in order to avoid build failures.
Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Paul Burton [Wed, 21 Sep 2016 10:18:59 +0000 (11:18 +0100)]
MIPS: Ensure cache ops complete in mips_cache_reset
Ensure that cache operations complete before returning from
mips_cache_reset by placing a completion barrier (sync instruction)
before the return. Without this there is no guarantee that the cache ops
will complete before any subsequent memory accesses, since they are
indexed cache ops & thus not implicitly ordered with memory accesses.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:58 +0000 (11:18 +0100)]
MIPS: Clear hazard between TagLo writes & cache ops
Writing to the coprocessor 0 TagLo registers introduces an execution
hazard in that we need that write to complete before any cache
instructions execute. Ensure that hazard is cleared by inserting an ehb
instruction between the TagLo writes & cache op loop.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:57 +0000 (11:18 +0100)]
MIPS: Ensure Config.K0=2 applies before any memory accesses
During boot we set Config.K0=2 (uncached) such that any accesses to the
kseg0 memory region are performed uncached before the caches are
initialised. This write to the Config register introduces an execution
hazard between it & any following memory accesses (such as the load of
_gp), which we need to clear in order to ensure those memory accesses
are actually performed uncached. Clear this execution hazard with the
insertion of an ehb execution hazard barrier instruction.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:56 +0000 (11:18 +0100)]
MIPS: Malta: Enable CM & L2 support
Enable support for the MIPS Coherence Manager & L2 caches on the MIPS
Malta board, removing the need for us to attempt to bypass the L2 during
boot (which would fail with recent CPUs that expose L2 config via the CM
anyway).
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:55 +0000 (11:18 +0100)]
MIPS: Join the coherent domain when a CM is present
MIPS Linux expects the bootloader to leave the boot CPU a member of the
coherent domain when running on a system with a CM, and we will need to
do so if we wish to make use of IOCUs to have cache-coherent DMA in
U-Boot (and on some systems there is no choice in that matter). When a
CM is present, join the coherent domain after completing cache
initialisation.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:54 +0000 (11:18 +0100)]
MIPS: L2 cache support
This patch adds support for initialising & maintaining L2 caches on MIPS
systems. The L2 cache configuration may be advertised through either
coprocessor 0 or the MIPS Coherence Manager depending upon the system,
and support for both is included.
If the L2 can be bypassed then we bypass it early in boot & initialise
the L1 caches first, such that we can start making use of the L1
instruction cache as early as possible. Otherwise we initialise the L2
first such that the L1s have no opportunity to generate access to the
uninitialised L2.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:52 +0000 (11:18 +0100)]
MIPS: Define register names for cache init
Define names for registers holding cache sizes throughout
mips_cache_reset, in order to make the code easier to read & allow for
changing register assignments more easily.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:51 +0000 (11:18 +0100)]
MIPS: If we don't need DDR for cache init, init cache first
On systems where cache initialisation doesn't require zeroed memory (ie.
systems where CONFIG_SYS_MIPS_CACHE_INIT_RAM_LOAD is not defined)
perform cache initialisation prior to lowlevel_init & DDR
initialisation. This allows for DDR initialisation code to run cached &
thus significantly faster.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:50 +0000 (11:18 +0100)]
MIPS: Preserve Config implementation-defined bits
The coprocessor 0 Config register includes 9 implementation defined
bits, which in some processors do things like enable write combining or
other functionality. We ought not to wipe them to 0 during boot. Rather
than doing so, preserve their value & only clear the bits standardised
by the MIPS architecture.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:49 +0000 (11:18 +0100)]
MIPS: Enable use of the instruction cache earlier
Enable use of the instruction cache immediately after it has been
initialised. This will only take effect if U-Boot was linked to run from
kseg0 rather than kseg1, but when this is the case the data cache
initialisation code will run cached & thus significantly faster.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:48 +0000 (11:18 +0100)]
MIPS: Probe cache line sizes once during boot
Rather than probing the cache line sizes on every call of any cache
maintenance function, probe them once during boot & store the values in
the global data structure for later use. This will reduce the overhead
of the cache maintenance functions, which isn't a big deal yet but
becomes more important once L2 caches which may expose their properties
via coprocessor 2 or the CM are supported.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:47 +0000 (11:18 +0100)]
MIPS: ath79: Use mach_cpu_init instead of arch_cpu_init
In order to prepare for MIPS arch code making use of arch_cpu_init in a
later patch, stop using it from ath79 SoC code & instead use the new
mach_cpu_init which is provided for this purpose.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Paul Burton [Wed, 21 Sep 2016 10:18:46 +0000 (11:18 +0100)]
board_f: Add a mach_cpu_init callback
Currently we have a mismash of architectures which use arch_cpu_init
from architecture-wide code (arc, avr32, blackfin, mips, nios2, xtensa)
and architectures which use arch_cpu_init from machine/SoC level code
(arm, x86).
In order to clean this mess up & allow for both use cases, introduce a
new mach_cpu_init callback which is run immediately after arch_cpu_init.
This will allow for architectures to have arch-wide code without needing
individual machines to all implement their own arch_cpu_init with a call
to some common function.
Signed-off-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: Simon Glass <sjg@chromium.org>
Mostly the same as the Kernel upstream device tree file except for
- alias for the serial console node
- ethernet node as the ethernet stuff isn't upstream on kernel.org yet
- uart clock-frequency passed directly in the node
Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> Reviewed-by: Paul Burton <paul.burton@imgtec.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
I took a closer look at this after the commit was applied, and found
CONFIG_SYS_MALLOC_F_LEN=0x2000 was too much. 8KB memory for SPL is
actually too big for some boards. Perhaps 0x800 is enough, but the
situation varies board by board.
Let's postpone our decision until we come up with a better idea.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Simon Glass <sjg@chromium.org>
ARM: uniphier: collect clock/PLL init code into a single directory
Now PLLs for DRAM controller are initialized in SPL, and the others
in U-Boot proper. Setting up all of them in a single directory will
be helpful when we want to share code between SPL and U-Boot proper.
ARM: uniphier: move PLL init code to U-Boot proper where possible
The PLL for the DRAM interface must be initialized in SPL, but the
others can be delayed until U-Boot proper. Move them from SPL to
U-Boot proper to save the precious SPL memory footprint.
The NAND subsystem has not supported the Driver Model yet, but the
NAND pin-mux data are already in the pinctrl drivers. Use them by
calling pinctrl_generic_set_state() directly.
Hans de Goede [Sat, 17 Sep 2016 14:02:38 +0000 (16:02 +0200)]
sunxi: musb: Re-init musb controller on repeated probe calls
With sunxi-musb musb_lowlevel_init() can fail when a charger; or no cable
is plugged into the otg port.
To avoid leaking the struct musb allocated by musb_init_controller()
on repeated musb_usb_probe() calls, we were caching its result.
But musb_init_controller() does more, such as calling sunxi_musb_init()
which enables the clocks.
Not calling sunxi_musb_init() causes the musb controller to stop working
after a "usb reset" since that calls musb_usb_remove() which disables the
clocks.
This commit fixes this by removing the caching of the struct returned
from musb_init_controller(), it replaces this by free-ing the allocated
memory in musb_usb_remove() and calling musb_usb_remove() on
musb_usb_probe() errors to ensure proper cleanup.
While at it also make musb_usb_probe() and musb_usb_remove() static.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
sunxi: musb: Power off OTG port VBUS when disabled
The Linux kernel musb driver expects VBUS to be off while initializing
musb. Having it on results in a repeating string of warnings, followed
by an unusable peripheral. The peripheral is only usable after
physically removing the OTG adapter, letting musb reset its state.
This partially reverts commit c9f8947e6604 ("sunxi: usb-phy: Never
power off the usb ports")
Signed-off-by: Chen-Yu Tsai <wens@csie.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Hans de Goede [Mon, 12 Sep 2016 07:52:52 +0000 (09:52 +0200)]
sunxi: axp2xx: disable ldoio0/1 at boot
When cold-booting the ldoio0/1 regulators are always off / the
gpios are always at tristate. But when re-booting from android these
are sometimes on. Disable them at axp_init time (iow as early as possible)
to remove this difference between a cold boot and a reboot.
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
Simon Glass [Tue, 13 Sep 2016 05:18:30 +0000 (23:18 -0600)]
spear: Use upper case for CONFIG options
There are a few options which use lower case. We should use upper case for
all CONFIG options.
Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Add usbtty/nand hunk to include/configs/spear3xx_evb.h] Signed-off-by: Tom Rini <trini@konsulko.com>
Simon Glass [Tue, 13 Sep 2016 13:05:23 +0000 (07:05 -0600)]
Kconfig: spl: Add SPL support options to Kconfig
There are a lot of SPL options in U-Boot to enable various features and
drivers. Currently these do not use Kconfig. Add them to Kconfig along
with suitable help, and drop them from the README.
Simon Glass [Tue, 13 Sep 2016 05:18:25 +0000 (23:18 -0600)]
Use separate options for TPL support
At present TPL uses the same options as SPL support. In a few cases the board
config enables or disables the SPL options depending on whether
CONFIG_TPL_BUILD is defined.
With the move to Kconfig, options are determined for the whole build and
(without a hack like an #undef in a header file) cannot be controlled in this
way.
Create new TPL options for these and update users. This will allow Kconfig
conversion to proceed for these boards.
Simon Glass [Tue, 13 Sep 2016 05:18:23 +0000 (23:18 -0600)]
arm: fsl: Adjust ordering of #ifndef CONFIG_SPL_BUILD
The secure boot header files incorrectly define SPL options only if
CONFIG_SPL_BUILD is defined. This means that the options are only enabled
in an SPL build, and not with a normal 'make xxx_defconfig'. This means
that moveconfig.py cannot work, since it sees the options as disabled even
when they may be manually enabled in an SPL build.
Simon Glass [Tue, 13 Sep 2016 05:18:21 +0000 (23:18 -0600)]
moveconfig: Add an option to commit changes
The moveconfig tool is quite clever and generally produces results that
are suitable for sending as a patch without further work. The main required
step is to add the changes to a commit.
Add an option to do this automatically. This allows moveconfig to be used
from a script to convert multiple CONFIG options, once per commit.
Simon Glass [Tue, 13 Sep 2016 05:18:20 +0000 (23:18 -0600)]
moveconfig: Add an option to skip prompts
At present it is not easy to use moveconfig from a script since it asks
for user input a few times. Add a -y option to skip this and assume that
'y' was entered.
ARM: uniphier: introduce flags to adjust DRAM timing for LD20/LD21
Unfortunately, this SoC needs per-board adjustment between clock
and address/command lines. This flag will be passed to the DRAM
init function and used for compensating the difference of DRAM
timing parameters.
The serial console is not ready at the point of [2], so we want to
avoid using [2] from the view point of debuggability. Fortunately,
all of the initialization in [2] can be delayed until [3]. I see no
good reason to split into [3] and [4]. So, merge [2] through [4].
projects / u-boot / log