This outer cache allows to control active ways independently for
each CPU, so this function will be useful to set up active ways
for a specific CPU.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Move this option to Kconfig, renaming it into CONFIG_CACHE_UNIPHIER.
The new option name makes sense enough, and the same as Linux has.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Now, all of these macros are only used in cache-uniphier.c, so
there is no need to export them in a header file.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The DRAM is available at this point, so setup the temporary stack
and call the C function to reduce the code duplication a bit.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The System Cache (outer cache) is used not only as L2 cache,
but also as locked SRAM. The functions for turning on/off it
is necessary whether the L2 cache is enabled or not.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
As the sLD3 Boot ROM has a complex page table, it is difficult to
set up the debug UART with enabling it. It will be much easier to
initialize the UART port after switching over to the straight-mapped
page table.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Commit 4b50369fb5 ("ARM: uniphier: create early page table at
run-time") broke the ROM boot mode for PH1-sLD3 SoC, because the
run-time page table creation requires the outer cache register
access but the page table in the sLD3 Boot ROM does not straight-map
virtual/physical addresses.
The idea here is to check the current page table to determine if
it is a straight map table. If not, adjust the outer cache register
base.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Here, the ldr pseudo-instruction falls into the ldr + data set.
The register access by [r1, #offset] produces shorter code.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
If CONFIG_UNIPHIER_L2CACHE_ON is undefined, the L2 cache is never
enabled, so there is no need for v7_outer_cache_disable(). The weak
stub avoids the compile error anyway.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The UniPhier outer cache (L2 cache on ARMv7 SoCs) can be used as
SRAM by locking ways.
These functions will be used to transfer the trampoline code for SMP
into the locked SRAM.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Unify the range/all operation routines into the common function,
uniphier_cache_maint_common(), and sync code with Linux a bit more.
This reduces the code duplication.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Deassert resets and enable clock signals of xHCI blocks if the
corresponding CONFIG is enabled.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
I need to add more board attributes, so the "flags" member will be
handier than separate boolean ones.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Sync register macros with Linux code. This will be helpful to
develop the counterpart of Linux.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This does not have much impact on behavior, but makes code look more
more like Linux. The use of devm_ioremap() often helps to delete
.remove callbacks entirely.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Introduce virtual and physical addresses in the mapping table. This change
have no impact on existing boards because they all use idential mapping.
Signed-off-by: York Sun <york.sun@nxp.com>
I will carry this work-around until it is cared in the kernel.
This looks up the AIDET node and sets up a register to handle
active low interrupt signals.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The SPL code already knows which boot device it calls the spl_boot_mode()
on, so pass that information into the function. This allows the code of
spl_boot_mode() avoid invoking spl_boot_device() again, but it also lets
board_boot_order() correctly alter the behavior of the boot process.
The later one is important, since in certain cases, it is desired that
spl_boot_device() return value be overriden using board_boot_order().
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Tom Rini <trini@konsulko.com>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
[add newly introduced zynq variant]
Signed-aff-by: Andreas Bießmann <andreas@biessmann.org>
The DRAM PHY layer on PH1-LD20 is able to calibrate PHY parameters
periodically. This compensates for the voltage and temperature
deviation and improves the PHY parameter adjustment. Instead, it
requires 64 byte scratch memory in each DRAM channel for the dynamic
training. The memory regions must be reserved in DT before jumping
to the kernel.
The scratch area can be anywhere in each DRAM channel, but the DRAM
init code in SPL currently assigns it at the end of each channel.
So, it makes sense to reserve the regions on run-time by U-Boot
instead of statically embedding it in the DT in Linux. Anyway,
a boot-loader should know much more about memory initialization
than the kernel.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This will make it easier to select config options specific to
particular ARM processor generation.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
I noticed secondary CPUs sometimes fail to wake up, and the root
cause is that the sev instruction wakes up slave CPUs before the
preceding the register write is observed by them.
The read-back of the accessed register does not guarantee the order.
In order to ensure the order between the register write and the sev
instruction, a dsb instruction should be executed prior to the sev.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This code auto-detects the best-match FDT file name, but it should
respect the user's choice if "fdt_file" environment is found in a
saved set of environments.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This function is shared between PH1-LD11 and PH1-LD20. The difference
is the boot-mode latch for the USB boot mode.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The Boot ROM on PH1-LD11/LD20 exports built-in APIs to load images
from an eMMC device. They are useful to reduce the memory footprint
of SPL, rather than compiling the whole MMC framework.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This header will be shared between PH1-LD11 and PH1-LD20
(and hopefully new ARMv8 SoCs developed in the future),
so umc64-regs.h would be a better fit.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The Boot ROM has enabled D-cache and MMU setting DDR memory area
as Normal Memory in its page table. Disable D-cache and MMU
before jumping to U-Boot proper.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The code in uniphier_sld3_sbc_init() is pin-muxing, so it would
be a better fit in uniphier_sld3_early_pin_init().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The System Bus is not available by default on the ROM boot mode of
PH1-LD20. To use devices connected to the System Bus, such as the
Micro Support Card, it is necessary to set up pin-muxing and some
System Bus Controller register.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
PH1-LD20 does not have the dedicated boot swap select latch.
Instead, it is controlled from the boot mode select.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The current table look-up for the DTB file name turned out bothersome
in terms of maintainability; I ended up adding a new entry every time
a new board is supported.
There is a common pattern between the DT compatible string and the
corresponding file name; drop the vendor prefix "socionext," and
prefix it with "uniphier-" and suffix it with ".dtb".
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
No need to stop booting U-Boot even if boot mode is unknown.
Setting the "bootmode" environment is only useful for booting
Linux Kernel. Anyway, U-Boot has already booted by this point.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
For PH1-LD20 or later, per-pin input-enable control is supported,
that is, we need to set-up IECTRL registers for a group of pins.
This helper function will be useful for a bunch of register settings.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Because DT properties are 4-byte aligned, the pointer access
*(fdt64_t *) in this code causes unaligned access.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
v7_maint_dcache_all() does not work reliable when build with gcc6,
see: https://bugzilla.redhat.com/show_bug.cgi?id=1318788
While debugging this I learned that v7_maint_dcache_all() is unreliable
when build with gcc5 too when it is marked as noinline.
This commit fixes the reliability issues by replacing the C-code with
the ready to use asm implementation from the kernel.
Given that this code when written as C-code clearly is quite fragile
(also see the existing comments about the C-code being the way it is
to get optimal assembly) and that we have a proven asm alternative,
I believe that this is the best solution.
Note that we actually already had a copy of the kernel's
v7_flush_dcache_all() before this commit in
arch/arm/mach-uniphier/arm32/lowlevel_init.S.
This commit moves that code arch/arm/cpu/armv7/cache_v7_asm.S, renames
it to __v7_flush_dcache_all(), and adds a v7_flush_dcache_all() wrapper
which saves / restores the clobbered registers for use from C-code.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Eliminate the "ph1"_ prefixes from function names because "uniphier_"
describes the SoC familiy better.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
