of/fdt: add dt_phys arg to early_init_dt_scan and early_init_dt_verify

__pa() is only intended to be used for linear map addresses and using
it for initial_boot_params which is in fixmap for arm64

of/fdt: add dt_phys arg to early_init_dt_scan and early_init_dt_verify

__pa() is only intended to be used for linear map addresses and using
it for initial_boot_params which is in fixmap for arm64 will give an
incorrect value. Hence save the physical address when it is known at
boot time when calling early_init_dt_scan for arm64 and use it at kexec
time instead of converting the virtual address using __pa().

Note that arm64 doesn't need the FDT region reserved in the DT as the
kernel explicitly reserves the passed in FDT. Therefore, only a debug
warning is fixed with this change.

Reported-by: Breno Leitao <[email protected]>
Suggested-by: Mark Rutland <[email protected]>
Signed-off-by: Usama Arif <[email protected]>
Fixes: ac10be5cdbfa ("arm64: Use common of_kexec_alloc_and_setup_fdt()")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Rob Herring (Arm) <[email protected]>

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ARC: -Wmissing-prototype warning fixes

Anrd reported [1] new compiler warnings due to -Wmissing-protype.
These are for non static functions mostly used in asm code hence not
exported already. Fix th

ARC: -Wmissing-prototype warning fixes

Anrd reported [1] new compiler warnings due to -Wmissing-protype.
These are for non static functions mostly used in asm code hence not
exported already. Fix this by adding the prototypes.

[1] https://lore.kernel.org/lkml/[email protected]

Reviewed-by: Arnd Bergmann <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: [plat-eznps]: Drop support for EZChip NPS platform

NPS customers are no longer doing active development, as evident from
rand config build failures reported in recent times, so drop support
for

ARC: [plat-eznps]: Drop support for EZChip NPS platform

NPS customers are no longer doing active development, as evident from
rand config build failures reported in recent times, so drop support
for NPS platform.

Tested-by: kernel test robot <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Enrico Weigelt <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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ARC: [plat-hsdk] initial port for HSDK board

This initial port adds support of ARC HS Development Kit board with some
basic features such serial port, USB, SD/MMC and Ethernet.

Essentially we run L

ARC: [plat-hsdk] initial port for HSDK board

This initial port adds support of ARC HS Development Kit board with some
basic features such serial port, USB, SD/MMC and Ethernet.

Essentially we run Linux kernel on all 4 cores (i.e. utilize SMP) and
heavily use IO Coherency for speeding-up DMA-aware peripherals.

Note as opposed to other ARC boards we link Linux kernel to
0x9000_0000 intentionally because cores 1 and 3 configured with DCCM
situated at our more usual link base 0x8000_0000. We still can use
memory region starting at 0x8000_0000 as we reallocate DCCM in our
platform code.

Note that PAE remapping for DMA clients does not work due to an RTL bug,
so CREG_PAE register must be programmed to all zeroes, otherwise it will
cause problems with DMA to/from peripherals even if PAE40 is not used.

Acked-by: Rob Herring <[email protected]>
Signed-off-by: Alexey Brodkin <[email protected]>
Signed-off-by: Eugeniy Paltsev <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: [plat-eznps] set default baud for early console

For CONFIG_SERIAL_EARLYCON we need 800MHz for NPS SoC
The early console driver uses BASE_BAUD and not using dtb.

The default of 50MHz is NOT goo

ARC: [plat-eznps] set default baud for early console

For CONFIG_SERIAL_EARLYCON we need 800MHz for NPS SoC
The early console driver uses BASE_BAUD and not using dtb.

The default of 50MHz is NOT good for NPS SoC.

Signed-off-by: Noam Camus <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: RIP arc_{get|set}_core_freq() clk API

There are no more users of this - so RIP!

Signed-off-by: Alexey Brodkin <[email protected]>
[vgupta: update changelog]
Signed-off-by: Vineet Gupta <vg

ARC: RIP arc_{get|set}_core_freq() clk API

There are no more users of this - so RIP!

Signed-off-by: Alexey Brodkin <[email protected]>
[vgupta: update changelog]
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: use fixed frequencies in arc_set_early_base_baud()

UARTs usually have fixed clock so we're switching to use of
constant values instead of something derived from core clock
frequency.

Among oth

ARC: use fixed frequencies in arc_set_early_base_baud()

UARTs usually have fixed clock so we're switching to use of
constant values instead of something derived from core clock
frequency.

Among other things this will allow us to get rid of
arc_{get|set}_core_freq() and switch to generic clock
framework later on.

Acked-by: Christian Ruppert <[email protected]>
Signed-off-by: Alexey Brodkin <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARCv2: [axs103] Support ARC SDP FPGA platform for HS38x cores

Cc: Grant Likely <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: [email protected]
Signed-off-by: Vineet Gup

ARCv2: [axs103] Support ARC SDP FPGA platform for HS38x cores

Cc: Grant Likely <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: [email protected]
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: [axs101] support early 8250 uart

Earlycon calculates UART clock as "BASE_BAUD * 16". In case of ARC
"BASE_BAUD" is calculated dynamically in runtime, basically it is an
alias to arc_early_base_

ARC: [axs101] support early 8250 uart

Earlycon calculates UART clock as "BASE_BAUD * 16". In case of ARC
"BASE_BAUD" is calculated dynamically in runtime, basically it is an
alias to arc_early_base_baud(), which in turn just does
"arc_base_baud/16".

8250 UART on AXS/SDP board uses 33.3MHz clock source which is set in
"arc_base_baud" with this change.

Additional compatibility string "snps,arc-sdp" is introduced as well
because there're different flavours of AXS boards but they all share the
same motherboard and so it's possible to re-use the same code for
motherbord even if CPU daughterboard changes.

Signed-off-by: Vineet Gupta <[email protected]>

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ARC: Fix earlycon build breakage

Commit ffb7fcd66f14 ("ARC: Dynamically determine BASE_BAUD from DeviceTree")
breaks arc:defconfig build:

drivers/built-in.o: In function `of_setup_earlycon':

ARC: Fix earlycon build breakage

Commit ffb7fcd66f14 ("ARC: Dynamically determine BASE_BAUD from DeviceTree")
breaks arc:defconfig build:

drivers/built-in.o: In function `of_setup_earlycon':
(.init.text+0xb3e): undefined reference to `arc_early_base_baud'
drivers/built-in.o: In function `setup_earlycon':
(.init.text+0xcd0): undefined reference to `arc_early_base_baud'
make: *** [vmlinux] Error 1

BASE_BAUD is only required for earlycon, which should depend on
CONFIG_SERIAL_EARLYCON.

Reported-by: Guenter Roeck <[email protected]>
Tested-by: Guenter Roeck <[email protected]>
Signed-off-by: Peter Hurley <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: Dynamically determine BASE_BAUD from DeviceTree

8250 earlycon is broken on multi-platform ARC because the UART clk
value (BASE_BAUD) is fixed at build time.

Instead, determine the appropriate

ARC: Dynamically determine BASE_BAUD from DeviceTree

8250 earlycon is broken on multi-platform ARC because the UART clk
value (BASE_BAUD) is fixed at build time.

Instead, determine the appropriate UART clk at runtime; parse the
devicetree early for platforms requiring alternate UART clk values
(currently only the TB10X platform).

Cc: Jiri Slaby <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Rob Herring <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Reviewed-by: Peter Hurley <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: fix build warning in devtree

Signed-off-by: Vineet Gupta <[email protected]>

of/fdt: update of_get_flat_dt_prop in prep for libfdt

Make of_get_flat_dt_prop arguments compatible with libfdt fdt_getprop
call in preparation to convert FDT code to use libfdt. Make the return
val

of/fdt: update of_get_flat_dt_prop in prep for libfdt

Make of_get_flat_dt_prop arguments compatible with libfdt fdt_getprop
call in preparation to convert FDT code to use libfdt. Make the return
value const and the property length ptr type an int.

Signed-off-by: Rob Herring <[email protected]>
Tested-by: Michal Simek <[email protected]>
Tested-by: Grant Likely <[email protected]>
Tested-by: Stephen Chivers <[email protected]>

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arc: remove unnecessary prom.h includes

Remove unnecessary prom.h includes in preparation to remove prom.h.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Vineet Gupta <vgupta@synop

arc: remove unnecessary prom.h includes

Remove unnecessary prom.h includes in preparation to remove prom.h.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Vineet Gupta <[email protected]>
Acked-by: Grant Likely <[email protected]>

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arc: use common of_flat_dt_match_machine

Convert arc to use the common of_flat_dt_match_machine function.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Vineet Gupta <vgupta@synopsy

arc: use common of_flat_dt_match_machine

Convert arc to use the common of_flat_dt_match_machine function.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Vineet Gupta <[email protected]>

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arc: use early_init_dt_scan

Convert arc to use new early_init_dt_scan function.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Vineet Gupta <[email protected]>

arc: use unflatten_and_copy_device_tree

Use the common unflatten_and_copy_device_tree to copy the built-in FDT
out of init section.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Vi

arc: use unflatten_and_copy_device_tree

Use the common unflatten_and_copy_device_tree to copy the built-in FDT
out of init section.

Signed-off-by: Rob Herring <[email protected]>
Acked-by: Vineet Gupta <[email protected]>
Acked-by: Grant Likely <[email protected]>

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of: consolidate definition of early_init_dt_alloc_memory_arch()

Most architectures use the same implementation. Collapse the common ones
into a single weak function that can be overridden.

Signed-o

of: consolidate definition of early_init_dt_alloc_memory_arch()

Most architectures use the same implementation. Collapse the common ones
into a single weak function that can be overridden.

Signed-off-by: Grant Likely <[email protected]>

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ARC: make a copy of flat DT

The flat DT (currently embedded in vmlinux) is in .init section.
The unflattened/binary tree doesn't copy strings through and references
them from orig flat DT - which co

ARC: make a copy of flat DT

The flat DT (currently embedded in vmlinux) is in .init section.
The unflattened/binary tree doesn't copy strings through and references
them from orig flat DT - which could cause catestrohpy if of_* APIs are
called post init, say from a driver which is a loadable module.

Reported-by: James Hogan <[email protected]>
Signed-off-by: Vineet Gupta <[email protected]>

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ARC: [Review] Multi-platform image #2: Board callback Infrastructure

The orig platform code orgnaization was singleton design pattern - only
one platform (and board thereof) would build at a time.

ARC: [Review] Multi-platform image #2: Board callback Infrastructure

The orig platform code orgnaization was singleton design pattern - only
one platform (and board thereof) would build at a time.

Thus any platform/board specific code (e.g. irq init, early init ...)
expected by ARC common code was exported as well defined set of APIs,
with only ONE instance building ever.

Now with multiple-platform build requirement, that design of code no
longer holds - multiple board specific calls need to build at the same
time - so ARC common code can't use the API approach, it needs a
callback based design where each board registers it's specific set of
functions, and at runtime, depending on board detection, the callbacks
are used from the registry.

This commit adds all the infrastructure, where board specific callbacks
are specified as a "maThine description".

All the hooks are placed in right spots, no board callbacks registered
yet (with MACHINE_STARt/END constructs) so the hooks will not run.

Next commit will actually convert the platform to this infrastructure.

Signed-off-by: Vineet Gupta <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>

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ARC: [DeviceTree] Convert some Kconfig items to runtime values

* mem size now runtime configured (prev CONFIG_ARC_PLAT_SDRAM_SIZE)
* core cpu clk runtime configured (prev CONFIG_ARC_PLAT_CLK)

Signe

ARC: [DeviceTree] Convert some Kconfig items to runtime values

* mem size now runtime configured (prev CONFIG_ARC_PLAT_SDRAM_SIZE)
* core cpu clk runtime configured (prev CONFIG_ARC_PLAT_CLK)

Signed-off-by: Vineet Gupta <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Grant Likely <[email protected]>

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ARC: [DeviceTree] Basic support

This is minimal infrastructure needed for devicetree work.
It uses an a sample "skeleton" devicetree - embedded in kernel image -
to print the board, manufacturer by

ARC: [DeviceTree] Basic support

This is minimal infrastructure needed for devicetree work.
It uses an a sample "skeleton" devicetree - embedded in kernel image -
to print the board, manufacturer by parsing the top-level "compatible"
string.

As of now we don't need any additional "board" specific "machine_desc".

TODO: support interpreting the command line as boot-loader passed dtb

Signed-off-by: Vineet Gupta <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: [email protected]
Cc: Rob Herring <[email protected]>
Cc: James Hogan <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Reviewed-by: James Hogan <[email protected]>

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